Initial Move from Azure DevOps to GitHub

2025-12-20 09:20:16 +00:00 · 2020-05-25 21:30:55 -05:00
commit 36581fb6d9
986 changed files with 195242 additions and 0 deletions
--- a/src/Common/ArrayHashMap.ts
+++ b/src/Common/ArrayHashMap.ts
@@ -0,0 +1,87 @@
+import { HashMap } from "./HashMap";
+
+/**
+ * Hash map of arrays which allows to:
+ * - push an item by key: add to array and create array if needed
+ * - remove item by key: remove from array and delete array if needed
+ */
+
+export class ArrayHashMap<T> {
+  private store: HashMap<T[]>;
+
+  constructor() {
+    this.store = new HashMap();
+  }
+
+  public has(key: string): boolean {
+    return this.store.has(key);
+  }
+
+  public get(key: string): T[] {
+    return this.store.get(key);
+  }
+
+  public size(): number {
+    return this.store.size();
+  }
+
+  public clear(): void {
+    this.store.clear();
+  }
+
+  public keys(): string[] {
+    return this.store.keys();
+  }
+
+  public delete(key: string): boolean {
+    return this.store.delete(key);
+  }
+
+  public forEach(key: string, iteratorFct: (value: T) => void) {
+    const values = this.store.get(key);
+    if (values) {
+      values.forEach(value => iteratorFct(value));
+    }
+  }
+
+  /**
+   * Insert item into array.
+   * If no array, create one.
+   * If item already in array, return.
+   * @param key
+   * @param item
+   */
+  public push(key: string, item: T): void {
+    let itemsArray: T[] = this.store.get(key);
+    if (!itemsArray) {
+      itemsArray = [item];
+      this.store.set(key, itemsArray);
+      return;
+    }
+
+    if (itemsArray.indexOf(item) === -1) {
+      itemsArray.push(item);
+    }
+  }
+
+  /**
+   * Remove item from array.
+   * If array is empty, remove array.
+   * @param key
+   * @param itemToRemove
+   */
+  public remove(key: string, itemToRemove: T) {
+    if (!this.store.has(key)) {
+      return;
+    }
+
+    const itemsArray = this.store.get(key);
+    const index = itemsArray.indexOf(itemToRemove);
+    if (index >= 0) {
+      itemsArray.splice(index, 1);
+      if (itemsArray.length === 0) {
+        this.store.delete(key);
+      }
+    }
+  }
+}
--- a/src/Common/Constants.ts
+++ b/src/Common/Constants.ts
@@ -0,0 +1,541 @@
+import { AutopilotTier } from "../Contracts/DataModels";
+import { config } from "../Config";
+import { HashMap } from "./HashMap";
+
+export class AuthorizationEndpoints {
+  public static arm: string = "https://management.core.windows.net/";
+  public static common: string = "https://login.windows.net/";
+}
+
+export class BackendEndpoints {
+  public static localhost: string = "https://localhost:12900";
+  public static dev: string = "https://ext.documents-dev.windows-int.net";
+  public static productionPortal: string = config.BACKEND_ENDPOINT || "https://main.documentdb.ext.azure.com";
+}
+
+export class EndpointsRegex {
+  public static readonly cassandra = "AccountEndpoint=(.*).cassandra.cosmosdb.azure.com";
+  public static readonly mongo = "mongodb://.*:(.*)@(.*).documents.azure.com";
+  public static readonly mongoCompute = "mongodb://.*:(.*)@(.*).mongo.cosmos.azure.com";
+  public static readonly sql = "AccountEndpoint=https://(.*).documents.azure.com";
+  public static readonly table = "TableEndpoint=https://(.*).table.cosmosdb.azure.com";
+}
+
+export class ApiEndpoints {
+  public static runtimeProxy: string = "/api/RuntimeProxy";
+  public static guestRuntimeProxy: string = "/api/guest/RuntimeProxy";
+}
+
+export class ServerIds {
+  public static localhost: string = "localhost";
+  public static blackforest: string = "blackforest";
+  public static fairfax: string = "fairfax";
+  public static mooncake: string = "mooncake";
+  public static productionPortal: string = "prod";
+  public static dev: string = "dev";
+}
+
+export class ArmApiVersions {
+  public static readonly documentDB: string = "2015-11-06";
+  public static readonly arcadia: string = "2019-06-01-preview";
+  public static readonly arcadiaLivy: string = "2019-11-01-preview";
+  public static readonly arm: string = "2015-11-01";
+  public static readonly armFeatures: string = "2014-08-01-preview";
+  public static readonly publicVersion = "2020-03-01";
+}
+
+export class ArmResourceTypes {
+  public static readonly notebookWorkspaces = "Microsoft.DocumentDB/databaseAccounts/notebookWorkspaces";
+  public static readonly synapseWorkspaces = "Microsoft.Synapse/workspaces";
+}
+
+export class BackendDefaults {
+  public static partitionKeyKind: string = "Hash";
+  public static singlePartitionStorageInGb: string = "10";
+  public static multiPartitionStorageInGb: string = "100";
+  public static maxChangeFeedRetentionDuration: number = 10;
+  public static partitionKeyVersion = 2;
+}
+
+export class ClientDefaults {
+  public static requestTimeoutMs: number = 60000;
+  public static portalCacheTimeoutMs: number = 10000;
+  public static errorNotificationTimeoutMs: number = 5000;
+  public static copyHelperTimeoutMs: number = 2000;
+  public static waitForDOMElementMs: number = 500;
+  public static cacheBustingTimeoutMs: number =
+    10 /** minutes **/ * 60 /** to seconds **/ * 1000 /** to milliseconds **/;
+  public static databaseThroughputIncreaseFactor: number = 100;
+  public static readonly arcadiaTokenRefreshInterval: number =
+    20 /** minutes **/ * 60 /** to seconds **/ * 1000 /** to milliseconds **/;
+  public static readonly arcadiaTokenRefreshIntervalPaddingMs: number = 2000;
+}
+
+export class AccountKind {
+  public static DocumentDB: string = "DocumentDB";
+  public static MongoDB: string = "MongoDB";
+  public static Parse: string = "Parse";
+  public static GlobalDocumentDB: string = "GlobalDocumentDB";
+  public static Default: string = AccountKind.DocumentDB;
+}
+
+export class CorrelationBackend {
+  public static Url: string = "https://aka.ms/cosmosdbanalytics";
+}
+
+export class DefaultAccountExperience {
+  public static DocumentDB: string = "DocumentDB";
+  public static Graph: string = "Graph";
+  public static MongoDB: string = "MongoDB";
+  public static ApiForMongoDB: string = "Azure Cosmos DB for MongoDB API";
+  public static Table: string = "Table";
+  public static Cassandra: string = "Cassandra";
+  public static Default: string = DefaultAccountExperience.DocumentDB;
+}
+
+export class CapabilityNames {
+  public static EnableTable: string = "EnableTable";
+  public static EnableGremlin: string = "EnableGremlin";
+  public static EnableCassandra: string = "EnableCassandra";
+  public static EnableAutoScale: string = "EnableAutoScale";
+  public static readonly EnableNotebooks: string = "EnableNotebooks";
+  public static readonly EnableStorageAnalytics: string = "EnableStorageAnalytics";
+  public static readonly EnableMongo: string = "EnableMongo";
+}
+
+export class Features {
+  public static readonly graphs = "graphs";
+  public static readonly cosmosdb = "cosmosdb";
+  public static readonly enableChangeFeedPolicy = "enablechangefeedpolicy";
+  public static readonly enableRupm = "enablerupm";
+  public static readonly cacheOptimizations = "dataexplorercacheoptimizations";
+  public static readonly executeSproc = "dataexplorerexecutesproc";
+  public static readonly hostedDataExplorer = "hosteddataexplorerenabled";
+  public static readonly enableTtl = "enablettl";
+  public static readonly enableNotebooks = "enablenotebooks";
+  public static readonly enableGallery = "enablegallery";
+  public static readonly enableSpark = "enablespark";
+  public static readonly livyEndpoint = "livyendpoint";
+  public static readonly settingsPane = "dataexplorersettingspane";
+  public static readonly throughputOverview = "throughputOverview";
+  public static readonly enableNteract = "enablenteract";
+  public static readonly notebookServerUrl = "notebookserverurl";
+  public static readonly notebookServerToken = "notebookservertoken";
+  public static readonly notebookBasePath = "notebookbasepath";
+  public static readonly enableLegacyResourceTree = "enablelegacyresourcetree";
+  public static readonly canExceedMaximumValue = "canexceedmaximumvalue";
+  public static readonly enableFixedCollectionWithSharedThroughput = "enablefixedcollectionwithsharedthroughput";
+  public static readonly enableAutoPilotV2 = "enableautopilotv2";
+  public static readonly ttl90Days = "ttl90days";
+}
+
+export class AfecFeatures {
+  public static readonly Spark = "spark-public-preview";
+  public static readonly Notebooks = "sparknotebooks-public-preview";
+  public static readonly StorageAnalytics = "storageanalytics-public-preview";
+}
+
+export class Spark {
+  public static readonly MaxWorkerCount = 10;
+  public static readonly SKUs: HashMap<string> = new HashMap({
+    "Cosmos.Spark.D1s": "D1s / 1 core / 4GB RAM",
+    "Cosmos.Spark.D2s": "D2s / 2 cores / 8GB RAM",
+    "Cosmos.Spark.D4s": "D4s / 4 cores / 16GB RAM",
+    "Cosmos.Spark.D8s": "D8s / 8 cores / 32GB RAM",
+    "Cosmos.Spark.D16s": "D16s / 16 cores / 64GB RAM",
+    "Cosmos.Spark.D32s": "D32s / 32 cores / 128GB RAM",
+    "Cosmos.Spark.D64s": "D64s / 64 cores / 256GB RAM"
+  });
+}
+
+export class TagNames {
+  public static defaultExperience: string = "defaultExperience";
+}
+
+export class MongoDBAccounts {
+  public static protocol: string = "https";
+  public static defaultPort: string = "10255";
+}
+
+export enum MongoBackendEndpointType {
+  local,
+  remote
+}
+
+export class MongoBackend {
+  public static localhostEndpoint: string = "/api/mongo/explorer";
+  public static centralUsEndpoint: string = "https://main.documentdb.ext.azure.com/api/mongo/explorer";
+  public static northEuropeEndpoint: string = "https://main.documentdb.ext.azure.com/api/mongo/explorer";
+  public static southEastAsiaEndpoint: string = "https://main.documentdb.ext.azure.com/api/mongo/explorer";
+
+  public static endpointsByRegion: any = {
+    default: MongoBackend.centralUsEndpoint,
+    northeurope: MongoBackend.northEuropeEndpoint,
+    ukwest: MongoBackend.northEuropeEndpoint,
+    uksouth: MongoBackend.northEuropeEndpoint,
+    westeurope: MongoBackend.northEuropeEndpoint,
+    australiaeast: MongoBackend.southEastAsiaEndpoint,
+    australiasoutheast: MongoBackend.southEastAsiaEndpoint,
+    centralindia: MongoBackend.southEastAsiaEndpoint,
+    eastasia: MongoBackend.southEastAsiaEndpoint,
+    japaneast: MongoBackend.southEastAsiaEndpoint,
+    japanwest: MongoBackend.southEastAsiaEndpoint,
+    koreacentral: MongoBackend.southEastAsiaEndpoint,
+    koreasouth: MongoBackend.southEastAsiaEndpoint,
+    southeastasia: MongoBackend.southEastAsiaEndpoint,
+    southindia: MongoBackend.southEastAsiaEndpoint,
+    westindia: MongoBackend.southEastAsiaEndpoint
+  };
+
+  public static endpointsByEnvironment: any = {
+    default: MongoBackendEndpointType.local,
+    localhost: MongoBackendEndpointType.local,
+    prod1: MongoBackendEndpointType.remote,
+    prod2: MongoBackendEndpointType.remote
+  };
+}
+
+// TODO: 435619 Add default endpoints per cloud and use regional only when available
+export class CassandraBackend {
+  public static readonly localhostEndpoint: string = "https://localhost:12901/";
+  public static readonly devEndpoint: string = "https://platformproxycassandradev.azurewebsites.net/";
+
+  public static readonly centralUsEndpoint: string = "https://main.documentdb.ext.azure.com/";
+  public static readonly northEuropeEndpoint: string = "https://main.documentdb.ext.azure.com/";
+  public static readonly southEastAsiaEndpoint: string = "https://main.documentdb.ext.azure.com/";
+
+  public static readonly bf_default: string = "https://main.documentdb.ext.microsoftazure.de/";
+  public static readonly mc_default: string = "https://main.documentdb.ext.azure.cn/";
+  public static readonly ff_default: string = "https://main.documentdb.ext.azure.us/";
+
+  public static readonly endpointsByRegion: any = {
+    default: CassandraBackend.centralUsEndpoint,
+    northeurope: CassandraBackend.northEuropeEndpoint,
+    ukwest: CassandraBackend.northEuropeEndpoint,
+    uksouth: CassandraBackend.northEuropeEndpoint,
+    westeurope: CassandraBackend.northEuropeEndpoint,
+    australiaeast: CassandraBackend.southEastAsiaEndpoint,
+    australiasoutheast: CassandraBackend.southEastAsiaEndpoint,
+    centralindia: CassandraBackend.southEastAsiaEndpoint,
+    eastasia: CassandraBackend.southEastAsiaEndpoint,
+    japaneast: CassandraBackend.southEastAsiaEndpoint,
+    japanwest: CassandraBackend.southEastAsiaEndpoint,
+    koreacentral: CassandraBackend.southEastAsiaEndpoint,
+    koreasouth: CassandraBackend.southEastAsiaEndpoint,
+    southeastasia: CassandraBackend.southEastAsiaEndpoint,
+    southindia: CassandraBackend.southEastAsiaEndpoint,
+    westindia: CassandraBackend.southEastAsiaEndpoint,
+
+    // Black Forest
+    germanycentral: CassandraBackend.bf_default,
+    germanynortheast: CassandraBackend.bf_default,
+
+    // Fairfax
+    usdodeast: CassandraBackend.ff_default,
+    usdodcentral: CassandraBackend.ff_default,
+    usgovarizona: CassandraBackend.ff_default,
+    usgoviowa: CassandraBackend.ff_default,
+    usgovtexas: CassandraBackend.ff_default,
+    usgovvirginia: CassandraBackend.ff_default,
+
+    // Mooncake
+    chinaeast: CassandraBackend.mc_default,
+    chinaeast2: CassandraBackend.mc_default,
+    chinanorth: CassandraBackend.mc_default,
+    chinanorth2: CassandraBackend.mc_default
+  };
+
+  public static readonly createOrDeleteApi: string = "api/cassandra/createordelete";
+  public static readonly guestCreateOrDeleteApi: string = "api/guest/cassandra/createordelete";
+  public static readonly queryApi: string = "api/cassandra";
+  public static readonly guestQueryApi: string = "api/guest/cassandra";
+  public static readonly keysApi: string = "api/cassandra/keys";
+  public static readonly guestKeysApi: string = "api/guest/cassandra/keys";
+  public static readonly schemaApi: string = "api/cassandra/schema";
+  public static readonly guestSchemaApi: string = "api/guest/cassandra/schema";
+}
+
+export class RUPMStates {
+  public static on: string = "on";
+  public static off: string = "off";
+}
+
+export class Queries {
+  public static CustomPageOption: string = "custom";
+  public static UnlimitedPageOption: string = "unlimited";
+  public static itemsPerPage: number = 100;
+  public static unlimitedItemsPerPage: number = 100; // TODO: Figure out appropriate value so it works for accounts with a large number of partitions
+
+  public static QueryEditorMinHeightRatio: number = 0.1;
+  public static QueryEditorMaxHeightRatio: number = 0.4;
+  public static readonly DefaultMaxDegreeOfParallelism = 6;
+}
+
+export class SavedQueries {
+  public static readonly CollectionName: string = "___Query";
+  public static readonly DatabaseName: string = "___Cosmos";
+  public static readonly OfferThroughput: number = 400;
+  public static readonly PartitionKeyProperty: string = "id";
+}
+
+export class DocumentsGridMetrics {
+  public static DocumentsPerPage: number = 100;
+  public static IndividualRowHeight: number = 34;
+  public static BufferHeight: number = 28;
+  public static SplitterMinWidth: number = 200;
+  public static SplitterMaxWidth: number = 360;
+
+  public static DocumentEditorMinWidthRatio: number = 0.2;
+  public static DocumentEditorMaxWidthRatio: number = 0.4;
+}
+
+export class ExplorerMetrics {
+  public static SplitterMinWidth: number = 240;
+  public static SplitterMaxWidth: number = 400;
+  public static CollapsedResourceTreeWidth: number = 36;
+}
+
+export class SplitterMetrics {
+  public static CollapsedPositionLeft: number = ExplorerMetrics.CollapsedResourceTreeWidth;
+}
+
+export class Areas {
+  public static ResourceTree: string = "Resource Tree";
+  public static ContextualPane: string = "Contextual Pane";
+  public static Tab: string = "Tab";
+  public static ShareDialog: string = "Share Access Dialog";
+  public static Notebook: string = "Notebook";
+}
+
+export class HttpHeaders {
+  public static activityId: string = "x-ms-activity-id";
+  public static apiType: string = "x-ms-cosmos-apitype";
+  public static authorization: string = "authorization";
+  public static collectionIndexTransformationProgress: string =
+    "x-ms-documentdb-collection-index-transformation-progress";
+  public static continuation: string = "x-ms-continuation";
+  public static correlationRequestId: string = "x-ms-correlation-request-id";
+  public static enableScriptLogging: string = "x-ms-documentdb-script-enable-logging";
+  public static guestAccessToken: string = "x-ms-encrypted-auth-token";
+  public static getReadOnlyKey: string = "x-ms-get-read-only-key";
+  public static connectionString: string = "x-ms-connection-string";
+  public static msDate: string = "x-ms-date";
+  public static location: string = "Location";
+  public static contentType: string = "Content-Type";
+  public static offerReplacePending: string = "x-ms-offer-replace-pending";
+  public static user: string = "x-ms-user";
+  public static populatePartitionStatistics: string = "x-ms-documentdb-populatepartitionstatistics";
+  public static queryMetrics: string = "x-ms-documentdb-query-metrics";
+  public static requestCharge: string = "x-ms-request-charge";
+  public static resourceQuota: string = "x-ms-resource-quota";
+  public static resourceUsage: string = "x-ms-resource-usage";
+  public static retryAfterMs: string = "x-ms-retry-after-ms";
+  public static scriptLogResults: string = "x-ms-documentdb-script-log-results";
+  public static populateCollectionThroughputInfo = "x-ms-documentdb-populatecollectionthroughputinfo";
+  public static supportSpatialLegacyCoordinates = "x-ms-documentdb-supportspatiallegacycoordinates";
+  public static usePolygonsSmallerThanAHemisphere = "x-ms-documentdb-usepolygonssmallerthanahemisphere";
+  public static autoPilotThroughput = "ProvisionedThroughputSettings";
+  public static autoPilotTier = "x-ms-cosmos-offer-autopilot-tier";
+  public static partitionKey: string = "x-ms-documentdb-partitionkey";
+  public static migrateOfferToManualThroughput: string = "x-ms-cosmos-migrate-offer-to-manual-throughput";
+  public static migrateOfferToAutopilot: string = "x-ms-cosmos-migrate-offer-to-autopilot";
+}
+
+export class ApiType {
+  // Mapped to hexadecimal values in the backend
+  public static readonly MongoDB: number = 1;
+  public static readonly Gremlin: number = 2;
+  public static readonly Cassandra: number = 4;
+  public static readonly Table: number = 8;
+  public static readonly SQL: number = 16;
+}
+
+export class HttpStatusCodes {
+  public static readonly OK: number = 200;
+  public static readonly Created: number = 201;
+  public static readonly Accepted: number = 202;
+  public static readonly NoContent: number = 204;
+  public static readonly Unauthorized: number = 401;
+  public static readonly Forbidden: number = 403;
+  public static readonly NotFound: number = 404;
+  public static readonly TooManyRequests: number = 429;
+  public static readonly Conflict: number = 409;
+
+  public static readonly InternalServerError: number = 500;
+  public static readonly BadGateway: number = 502;
+  public static readonly ServiceUnavailable: number = 503;
+  public static readonly GatewayTimeout: number = 504;
+
+  public static readonly RetryableStatusCodes: number[] = [
+    HttpStatusCodes.TooManyRequests,
+    HttpStatusCodes.InternalServerError, // TODO: Handle all 500s on Portal backend and remove from retries list
+    HttpStatusCodes.BadGateway,
+    HttpStatusCodes.ServiceUnavailable,
+    HttpStatusCodes.GatewayTimeout
+  ];
+}
+
+export class Urls {
+  public static feedbackEmail = "https://aka.ms/cosmosdbfeedback?subject=Cosmos%20DB%20Data%20Explorer%20Feedback";
+  public static autoscaleMigration = "https://aka.ms/cosmos-autoscale-migration";
+}
+
+export class HashRoutePrefixes {
+  public static databases: string = "/dbs/{db_id}";
+  public static collections: string = "/dbs/{db_id}/colls/{coll_id}";
+  public static sprocHash: string = "/sprocs/";
+  public static sprocs: string = HashRoutePrefixes.collections + HashRoutePrefixes.sprocHash + "{sproc_id}";
+  public static docs: string = HashRoutePrefixes.collections + "/docs/{doc_id}/";
+  public static conflicts: string = HashRoutePrefixes.collections + "/conflicts";
+
+  public static databasesWithId(databaseId: string): string {
+    return this.databases.replace("{db_id}", databaseId).replace("/", ""); // strip the first slash since hasher adds it
+  }
+
+  public static collectionsWithIds(databaseId: string, collectionId: string): string {
+    const transformedDatabasePrefix: string = this.collections.replace("{db_id}", databaseId);
+
+    return transformedDatabasePrefix.replace("{coll_id}", collectionId).replace("/", ""); // strip the first slash since hasher adds it
+  }
+
+  public static sprocWithIds(
+    databaseId: string,
+    collectionId: string,
+    sprocId: string,
+    stripFirstSlash: boolean = true
+  ): string {
+    const transformedDatabasePrefix: string = this.sprocs.replace("{db_id}", databaseId);
+
+    const transformedSprocRoute: string = transformedDatabasePrefix
+      .replace("{coll_id}", collectionId)
+      .replace("{sproc_id}", sprocId);
+    if (!!stripFirstSlash) {
+      return transformedSprocRoute.replace("/", ""); // strip the first slash since hasher adds it
+    }
+
+    return transformedSprocRoute;
+  }
+
+  public static conflictsWithIds(databaseId: string, collectionId: string) {
+    const transformedDatabasePrefix: string = this.conflicts.replace("{db_id}", databaseId);
+
+    return transformedDatabasePrefix.replace("{coll_id}", collectionId).replace("/", ""); // strip the first slash since hasher adds it;
+  }
+
+  public static docsWithIds(databaseId: string, collectionId: string, docId: string) {
+    const transformedDatabasePrefix: string = this.docs.replace("{db_id}", databaseId);
+
+    return transformedDatabasePrefix
+      .replace("{coll_id}", collectionId)
+      .replace("{doc_id}", docId)
+      .replace("/", ""); // strip the first slash since hasher adds it
+  }
+}
+
+export class ConfigurationOverridesValues {
+  public static IsBsonSchemaV2: string = "true";
+}
+
+export class KeyCodes {
+  public static Space: number = 32;
+  public static Enter: number = 13;
+  public static Escape: number = 27;
+  public static UpArrow: number = 38;
+  public static DownArrow: number = 40;
+  public static LeftArrow: number = 37;
+  public static RightArrow: number = 39;
+  public static Tab: number = 9;
+}
+
+export class TryCosmosExperience {
+  public static extendUrl: string = "https://trycosmosdb.azure.com/api/resource/extendportal?userId={0}";
+  public static deleteUrl: string = "https://trycosmosdb.azure.com/api/resource/deleteportal?userId={0}";
+  public static collectionsPerAccount: number = 3;
+  public static maxRU: number = 5000;
+  public static defaultRU: number = 3000;
+}
+
+export class OfferVersions {
+  public static V1: string = "V1";
+  public static V2: string = "V2";
+}
+
+export enum ConflictOperationType {
+  Replace = "replace",
+  Create = "create",
+  Delete = "delete"
+}
+
+export class AutoPilot {
+  public static tier1Text: string = "4,000 RU/s";
+  public static tier2Text: string = "20,000 RU/s";
+  public static tier3Text: string = "100,000 RU/s";
+  public static tier4Text: string = "500,000 RU/s";
+
+  public static tierText = {
+    [AutopilotTier.Tier1]: "Tier 1",
+    [AutopilotTier.Tier2]: "Tier 2",
+    [AutopilotTier.Tier3]: "Tier 3",
+    [AutopilotTier.Tier4]: "Tier 4"
+  };
+
+  public static tierMaxRus = {
+    [AutopilotTier.Tier1]: 2000,
+    [AutopilotTier.Tier2]: 20000,
+    [AutopilotTier.Tier3]: 100000,
+    [AutopilotTier.Tier4]: 500000
+  };
+
+  public static tierMinRus = {
+    [AutopilotTier.Tier1]: 0,
+    [AutopilotTier.Tier2]: 0,
+    [AutopilotTier.Tier3]: 0,
+    [AutopilotTier.Tier4]: 0
+  };
+
+  public static tierStorageInGB = {
+    [AutopilotTier.Tier1]: 50,
+    [AutopilotTier.Tier2]: 200,
+    [AutopilotTier.Tier3]: 1000,
+    [AutopilotTier.Tier4]: 5000
+  };
+}
+
+export class DataExplorerVersions {
+  public static readonly v_1_0_0: string = "1.0.0";
+  public static readonly v_1_0_1: string = "1.0.1";
+}
+
+export class DataExplorerFeatures {
+  public static offerCache: string = "OfferCache";
+}
+
+export const DataExplorerFeaturesVersions: any = {
+  OfferCache: DataExplorerVersions.v_1_0_1
+};
+
+export const EmulatorMasterKey =
+  //[SuppressMessage("Microsoft.Security", "CS002:SecretInNextLine", Justification="Well known public masterKey for emulator")]
+  "C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==";
+
+// A variable @MyVariable defined in Constants.less is accessible as StyleConstants.MyVariable
+export const StyleConstants = require("less-vars-loader!../../less/Common/Constants.less");
+
+export class Notebook {
+  public static readonly defaultBasePath = "./notebooks";
+  public static readonly heartbeatDelayMs = 5000;
+  public static readonly kernelRestartInitialDelayMs = 1000;
+  public static readonly kernelRestartMaxDelayMs = 20000;
+  public static readonly autoSaveIntervalMs = 120000;
+}
+
+export class SparkLibrary {
+  public static readonly nameMinLength = 3;
+  public static readonly nameMaxLength = 63;
+}
+
+export class AnalyticalStorageTtl {
+  public static readonly Days90: number = 7776000;
+  public static readonly Infinite: number = -1;
+  public static readonly Disabled: number = 0;
+}
--- a/src/Common/CosmosClient.test.ts
+++ b/src/Common/CosmosClient.test.ts
@@ -0,0 +1,134 @@
+import { CosmosClient, tokenProvider, endpoint, requestPlugin, getTokenFromAuthService } from "./CosmosClient";
+import { ResourceType } from "@azure/cosmos/dist-esm/common/constants";
+import { config, Platform } from "../Config";
+
+describe("tokenProvider", () => {
+  const options = {
+    verb: "GET" as any,
+    path: "/",
+    resourceId: "",
+    resourceType: "dbs" as ResourceType,
+    headers: {},
+    getAuthorizationTokenUsingMasterKey: () => ""
+  };
+
+  beforeEach(() => {
+    window.dataExplorer = { extensionEndpoint: () => "https://main.documentdb.ext.azure.com" } as any;
+    window.fetch = jest.fn().mockImplementation(() => {
+      return {
+        json: () => "{}",
+        headers: new Map()
+      };
+    });
+  });
+
+  afterEach(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("calls the auth token service if no master key is set", async () => {
+    await tokenProvider(options);
+    expect((window.fetch as any).mock.calls.length).toBe(1);
+  });
+
+  it("does not call the auth service if a master key is set", async () => {
+    CosmosClient.masterKey("foo");
+    await tokenProvider(options);
+    expect((window.fetch as any).mock.calls.length).toBe(0);
+  });
+});
+
+describe("getTokenFromAuthService", () => {
+  beforeEach(() => {
+    delete window.dataExplorer;
+    delete config.BACKEND_ENDPOINT;
+    window.fetch = jest.fn().mockImplementation(() => {
+      return {
+        json: () => "{}",
+        headers: new Map()
+      };
+    });
+  });
+
+  afterEach(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("builds the correct URL in production", () => {
+    window.dataExplorer = { extensionEndpoint: () => "https://main.documentdb.ext.azure.com" } as any;
+    getTokenFromAuthService("GET", "dbs", "foo");
+    expect(window.fetch).toHaveBeenCalledWith(
+      "https://main.documentdb.ext.azure.com/api/guest/runtimeproxy/authorizationTokens",
+      expect.any(Object)
+    );
+  });
+
+  it("builds the correct URL in dev", () => {
+    config.BACKEND_ENDPOINT = "https://localhost:1234";
+    getTokenFromAuthService("GET", "dbs", "foo");
+    expect(window.fetch).toHaveBeenCalledWith(
+      "https://localhost:1234/api/guest/runtimeproxy/authorizationTokens",
+      expect.any(Object)
+    );
+  });
+});
+
+describe("endpoint", () => {
+  it("falls back to _databaseAccount", () => {
+    CosmosClient.databaseAccount({
+      id: "foo",
+      name: "foo",
+      location: "foo",
+      type: "foo",
+      kind: "foo",
+      tags: [],
+      properties: {
+        documentEndpoint: "bar",
+        gremlinEndpoint: "foo",
+        tableEndpoint: "foo",
+        cassandraEndpoint: "foo"
+      }
+    });
+    expect(endpoint()).toEqual("bar");
+  });
+  it("uses _endpoint if set", () => {
+    CosmosClient.endpoint("baz");
+    expect(endpoint()).toEqual("baz");
+  });
+});
+
+describe("requestPlugin", () => {
+  beforeEach(() => {
+    delete window.dataExplorerPlatform;
+    delete config.PROXY_PATH;
+    delete config.BACKEND_ENDPOINT;
+    delete config.PROXY_PATH;
+  });
+
+  describe("Hosted", () => {
+    it("builds a proxy URL in development", () => {
+      const next = jest.fn();
+      config.platform = Platform.Hosted;
+      config.BACKEND_ENDPOINT = "https://localhost:1234";
+      config.PROXY_PATH = "/proxy";
+      const headers = {};
+      const endpoint = "https://docs.azure.com";
+      const path = "/dbs/foo";
+      requestPlugin({ endpoint, headers, path } as any, next as any);
+      expect(next.mock.calls[0][0]).toMatchSnapshot();
+    });
+  });
+
+  describe("Emulator", () => {
+    it("builds a url for emulator proxy via webpack", () => {
+      const next = jest.fn();
+      config.platform = Platform.Emulator;
+      config.PROXY_PATH = "/proxy";
+      const headers = {};
+      const endpoint = "";
+      const path = "/dbs/foo";
+      requestPlugin({ endpoint, headers, path } as any, next as any);
+      expect(next.mock.calls[0][0]).toMatchSnapshot();
+    });
+  });
+});
--- a/src/Common/CosmosClient.ts
+++ b/src/Common/CosmosClient.ts
@@ -0,0 +1,176 @@
+import * as Cosmos from "@azure/cosmos";
+import { RequestInfo, setAuthorizationTokenHeaderUsingMasterKey } from "@azure/cosmos";
+import { DatabaseAccount } from "../Contracts/DataModels";
+import { HttpHeaders, EmulatorMasterKey } from "./Constants";
+import { NotificationConsoleUtils } from "../Utils/NotificationConsoleUtils";
+import { ConsoleDataType } from "../Explorer/Menus/NotificationConsole/NotificationConsoleComponent";
+import { config, Platform } from "../Config";
+
+let _client: Cosmos.CosmosClient;
+let _masterKey: string;
+let _endpoint: string;
+let _authorizationToken: string;
+let _accessToken: string;
+let _databaseAccount: DatabaseAccount;
+let _subscriptionId: string;
+let _resourceGroup: string;
+let _resourceToken: string;
+
+const _global = typeof self === "undefined" ? window : self;
+
+export const tokenProvider = async (requestInfo: RequestInfo) => {
+  const { verb, resourceId, resourceType, headers } = requestInfo;
+  if (config.platform === Platform.Emulator) {
+    // TODO Remove any. SDK expects a return value for tokenProvider, but we are mutating the header object instead.
+    return setAuthorizationTokenHeaderUsingMasterKey(verb, resourceId, resourceType, headers, EmulatorMasterKey) as any;
+  }
+
+  if (_masterKey) {
+    // TODO Remove any. SDK expects a return value for tokenProvider, but we are mutating the header object instead.
+    return setAuthorizationTokenHeaderUsingMasterKey(verb, resourceId, resourceType, headers, _masterKey) as any;
+  }
+
+  if (_resourceToken) {
+    return _resourceToken;
+  }
+
+  const result = await getTokenFromAuthService(verb, resourceType, resourceId);
+  headers[HttpHeaders.msDate] = result.XDate;
+  return decodeURIComponent(result.PrimaryReadWriteToken);
+};
+
+export const requestPlugin: Cosmos.Plugin<any> = async (requestContext, next) => {
+  requestContext.endpoint = config.PROXY_PATH;
+  requestContext.headers["x-ms-proxy-target"] = endpoint();
+  return next(requestContext);
+};
+
+export const endpoint = () => {
+  if (config.platform === Platform.Emulator) {
+    return config.EMULATOR_ENDPOINT || window.parent.location.origin;
+  }
+  return _endpoint || (_databaseAccount && _databaseAccount.properties && _databaseAccount.properties.documentEndpoint);
+};
+
+export async function getTokenFromAuthService(verb: string, resourceType: string, resourceId?: string): Promise<any> {
+  try {
+    const host = config.BACKEND_ENDPOINT || _global.dataExplorer.extensionEndpoint();
+    const response = await _global.fetch(host + "/api/guest/runtimeproxy/authorizationTokens", {
+      method: "POST",
+      headers: {
+        "content-type": "application/json",
+        "x-ms-encrypted-auth-token": _accessToken
+      },
+      body: JSON.stringify({
+        verb,
+        resourceType,
+        resourceId
+      })
+    });
+    //TODO I am not sure why we have to parse the JSON again here. fetch should do it for us when we call .json()
+    const result = JSON.parse(await response.json());
+    return result;
+  } catch (error) {
+    NotificationConsoleUtils.logConsoleMessage(
+      ConsoleDataType.Error,
+      `Failed to get authorization headers for ${resourceType}: ${JSON.stringify(error)}`
+    );
+    return Promise.reject(error);
+  }
+}
+
+export const CosmosClient = {
+  client(): Cosmos.CosmosClient {
+    if (_client) {
+      return _client;
+    }
+    const options: Cosmos.CosmosClientOptions = {
+      endpoint: endpoint() || " ", // CosmosClient gets upset if we pass a falsy value here
+      key: _masterKey,
+      tokenProvider,
+      connectionPolicy: {
+        enableEndpointDiscovery: false
+      },
+      userAgentSuffix: "Azure Portal"
+    };
+
+    // In development we proxy requests to the backend via webpack. This is removed in production bundles.
+    if (process.env.NODE_ENV === "development") {
+      (options as any).plugins = [{ on: "request", plugin: requestPlugin }];
+    }
+    _client = new Cosmos.CosmosClient(options);
+    return _client;
+  },
+
+  authorizationToken(value?: string): string {
+    if (typeof value === "undefined") {
+      return _authorizationToken;
+    }
+    _authorizationToken = value;
+    _client = null;
+    return value;
+  },
+
+  accessToken(value?: string): string {
+    if (typeof value === "undefined") {
+      return _accessToken;
+    }
+    _accessToken = value;
+    _client = null;
+    return value;
+  },
+
+  masterKey(value?: string): string {
+    if (typeof value === "undefined") {
+      return _masterKey;
+    }
+    _client = null;
+    _masterKey = value;
+    return value;
+  },
+
+  endpoint(value?: string): string {
+    if (typeof value === "undefined") {
+      return _endpoint;
+    }
+    _client = null;
+    _endpoint = value;
+    return value;
+  },
+
+  databaseAccount(value?: DatabaseAccount): DatabaseAccount {
+    if (typeof value === "undefined") {
+      return _databaseAccount || ({} as any);
+    }
+    _client = null;
+    _databaseAccount = value;
+    return value;
+  },
+
+  subscriptionId(value?: string): string {
+    if (typeof value === "undefined") {
+      return _subscriptionId;
+    }
+    _client = null;
+    _subscriptionId = value;
+    return value;
+  },
+
+  resourceGroup(value?: string): string {
+    if (typeof value === "undefined") {
+      return _resourceGroup;
+    }
+    _client = null;
+    _resourceGroup = value;
+    return value;
+  },
+
+  resourceToken(value?: string): string {
+    if (typeof value === "undefined") {
+      return _resourceToken;
+    }
+    _client = null;
+    _resourceToken = value;
+    return value;
+  }
+};
--- a/src/Common/DataAccessUtilityBase.test.ts
+++ b/src/Common/DataAccessUtilityBase.test.ts
@@ -0,0 +1,13 @@
+import { getCommonQueryOptions } from "./DataAccessUtilityBase";
+import { LocalStorageUtility, StorageKey } from "../Shared/StorageUtility";
+
+describe("getCommonQueryOptions", () => {
+  it("builds the correct default options objects", () => {
+    expect(getCommonQueryOptions({})).toMatchSnapshot();
+  });
+  it("reads from localStorage", () => {
+    LocalStorageUtility.setEntryNumber(StorageKey.ActualItemPerPage, 37);
+    LocalStorageUtility.setEntryNumber(StorageKey.MaxDegreeOfParellism, 17);
+    expect(getCommonQueryOptions({})).toMatchSnapshot();
+  });
+});
--- a/src/Common/DataAccessUtilityBase.ts
+++ b/src/Common/DataAccessUtilityBase.ts
@@ -0,0 +1,678 @@
+import * as _ from "underscore";
+import * as Constants from "./Constants";
+import * as DataModels from "../Contracts/DataModels";
+import * as HeadersUtility from "./HeadersUtility";
+import * as ViewModels from "../Contracts/ViewModels";
+import Q from "q";
+import {
+  ConflictDefinition,
+  ContainerDefinition,
+  ContainerResponse,
+  DatabaseResponse,
+  FeedOptions,
+  ItemDefinition,
+  PartitionKeyDefinition,
+  QueryIterator,
+  Resource,
+  TriggerDefinition
+} from "@azure/cosmos";
+import { ContainerRequest } from "@azure/cosmos/dist-esm/client/Container/ContainerRequest";
+import { CosmosClient } from "./CosmosClient";
+import { DatabaseRequest } from "@azure/cosmos/dist-esm/client/Database/DatabaseRequest";
+import { LocalStorageUtility, StorageKey } from "../Shared/StorageUtility";
+import { MessageHandler } from "./MessageHandler";
+import { MessageTypes } from "../Contracts/ExplorerContracts";
+import { OfferUtils } from "../Utils/OfferUtils";
+import { RequestOptions } from "@azure/cosmos/dist-esm";
+
+export function getCommonQueryOptions(options: FeedOptions): any {
+  const storedItemPerPageSetting: number = LocalStorageUtility.getEntryNumber(StorageKey.ActualItemPerPage);
+  options = options || {};
+  options.populateQueryMetrics = true;
+  options.enableScanInQuery = options.enableScanInQuery || true;
+  if (!options.partitionKey) {
+    options.forceQueryPlan = true;
+  }
+  options.maxItemCount =
+    options.maxItemCount ||
+    (storedItemPerPageSetting !== undefined && storedItemPerPageSetting) ||
+    Constants.Queries.itemsPerPage;
+  options.maxDegreeOfParallelism = LocalStorageUtility.getEntryNumber(StorageKey.MaxDegreeOfParellism);
+
+  return options;
+}
+
+// TODO: Add timeout for all promises
+export abstract class DataAccessUtilityBase {
+  public queryDocuments(
+    databaseId: string,
+    containerId: string,
+    query: string,
+    options: any
+  ): Q.Promise<QueryIterator<ItemDefinition & Resource>> {
+    options = getCommonQueryOptions(options);
+    const documentsIterator = CosmosClient.client()
+      .database(databaseId)
+      .container(containerId)
+      .items.query(query, options);
+    return Q(documentsIterator);
+  }
+
+  public readStoredProcedures(
+    collection: ViewModels.Collection,
+    options?: any
+  ): Q.Promise<DataModels.StoredProcedure[]> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.storedProcedures.readAll(options)
+        .fetchAll()
+        .then(response => response.resources as DataModels.StoredProcedure[])
+    );
+  }
+
+  public readStoredProcedure(
+    collection: ViewModels.Collection,
+    requestedResource: DataModels.Resource,
+    options?: any
+  ): Q.Promise<DataModels.StoredProcedure> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.storedProcedure(requestedResource.id)
+        .read(options)
+        .then(response => response.resource as DataModels.StoredProcedure)
+    );
+  }
+  public readUserDefinedFunctions(
+    collection: ViewModels.Collection,
+    options: any
+  ): Q.Promise<DataModels.UserDefinedFunction[]> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.userDefinedFunctions.readAll(options)
+        .fetchAll()
+        .then(response => response.resources as DataModels.UserDefinedFunction[])
+    );
+  }
+  public readUserDefinedFunction(
+    collection: ViewModels.Collection,
+    requestedResource: DataModels.Resource,
+    options?: any
+  ): Q.Promise<DataModels.UserDefinedFunction> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.userDefinedFunction(requestedResource.id)
+        .read(options)
+        .then(response => response.resource as DataModels.UserDefinedFunction)
+    );
+  }
+
+  public readTriggers(collection: ViewModels.Collection, options: any): Q.Promise<DataModels.Trigger[]> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.triggers.readAll(options)
+        .fetchAll()
+        .then(response => response.resources as DataModels.Trigger[])
+    );
+  }
+
+  public readTrigger(
+    collection: ViewModels.Collection,
+    requestedResource: DataModels.Resource,
+    options?: any
+  ): Q.Promise<DataModels.Trigger> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.trigger(requestedResource.id)
+        .read(options)
+        .then(response => response.resource as DataModels.Trigger)
+    );
+  }
+
+  public executeStoredProcedure(
+    collection: ViewModels.Collection,
+    storedProcedure: ViewModels.StoredProcedure,
+    partitionKeyValue: any,
+    params: any[]
+  ): Q.Promise<any> {
+    // TODO remove this deferred. Kept it because of timeout code at bottom of function
+    const deferred = Q.defer<any>();
+
+    CosmosClient.client()
+      .database(collection.databaseId)
+      .container(collection.id())
+      .scripts.storedProcedure(storedProcedure.id())
+      .execute(partitionKeyValue, params, { enableScriptLogging: true })
+      .then(response =>
+        deferred.resolve({
+          result: response.resource,
+          scriptLogs: response.headers[Constants.HttpHeaders.scriptLogResults]
+        })
+      )
+      .catch(error => deferred.reject(error));
+
+    return deferred.promise.timeout(
+      Constants.ClientDefaults.requestTimeoutMs,
+      `Request timed out while executing stored procedure ${storedProcedure.id()}`
+    );
+  }
+
+  public readDocument(collection: ViewModels.CollectionBase, documentId: ViewModels.DocumentId): Q.Promise<any> {
+    const partitionKey = documentId.partitionKeyValue;
+
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .item(documentId.id(), partitionKey)
+        .read()
+        .then(response => response.resource)
+    );
+  }
+
+  public getPartitionKeyHeaderForConflict(conflictId: ViewModels.ConflictId): Object {
+    const partitionKeyDefinition: DataModels.PartitionKey = conflictId.partitionKey;
+    const partitionKeyValue: any = conflictId.partitionKeyValue;
+
+    return this.getPartitionKeyHeader(partitionKeyDefinition, partitionKeyValue);
+  }
+
+  public getPartitionKeyHeader(partitionKeyDefinition: DataModels.PartitionKey, partitionKeyValue: any): Object {
+    if (!partitionKeyDefinition) {
+      return undefined;
+    }
+
+    if (partitionKeyValue === undefined) {
+      return [{}];
+    }
+
+    return [partitionKeyValue];
+  }
+
+  public updateCollection(
+    databaseId: string,
+    collectionId: string,
+    newCollection: DataModels.Collection,
+    options: any = {}
+  ): Q.Promise<DataModels.Collection> {
+    return Q(
+      CosmosClient.client()
+        .database(databaseId)
+        .container(collectionId)
+        .replace(newCollection as ContainerDefinition, options)
+        .then(async (response: ContainerResponse) => {
+          return this.refreshCachedResources().then(() => response.resource as DataModels.Collection);
+        })
+    );
+  }
+
+  public updateDocument(
+    collection: ViewModels.CollectionBase,
+    documentId: ViewModels.DocumentId,
+    newDocument: any
+  ): Q.Promise<any> {
+    const partitionKey = documentId.partitionKeyValue;
+
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .item(documentId.id(), partitionKey)
+        .replace(newDocument)
+        .then(response => response.resource)
+    );
+  }
+
+  public updateOffer(
+    offer: DataModels.Offer,
+    newOffer: DataModels.Offer,
+    options?: RequestOptions
+  ): Q.Promise<DataModels.Offer> {
+    return Q(
+      CosmosClient.client()
+        .offer(offer.id)
+        .replace(newOffer, options)
+        .then(response => {
+          return Promise.all([this.refreshCachedOffers(), this.refreshCachedResources()]).then(() => response.resource);
+        })
+    );
+  }
+
+  public updateStoredProcedure(
+    collection: ViewModels.Collection,
+    storedProcedure: DataModels.StoredProcedure,
+    options: any
+  ): Q.Promise<DataModels.StoredProcedure> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.storedProcedure(storedProcedure.id)
+        .replace(storedProcedure, options)
+        .then(response => response.resource as DataModels.StoredProcedure)
+    );
+  }
+
+  public updateUserDefinedFunction(
+    collection: ViewModels.Collection,
+    userDefinedFunction: DataModels.UserDefinedFunction,
+    options?: any
+  ): Q.Promise<DataModels.UserDefinedFunction> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.userDefinedFunction(userDefinedFunction.id)
+        .replace(userDefinedFunction, options)
+        .then(response => response.resource as DataModels.StoredProcedure)
+    );
+  }
+
+  public updateTrigger(
+    collection: ViewModels.Collection,
+    trigger: DataModels.Trigger,
+    options?: any
+  ): Q.Promise<DataModels.Trigger> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.trigger(trigger.id)
+        .replace(trigger as TriggerDefinition, options)
+        .then(response => response.resource as DataModels.Trigger)
+    );
+  }
+
+  public createDocument(collection: ViewModels.CollectionBase, newDocument: any): Q.Promise<any> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .items.create(newDocument)
+        .then(response => response.resource as DataModels.StoredProcedure)
+    );
+  }
+
+  public createStoredProcedure(
+    collection: ViewModels.Collection,
+    newStoredProcedure: DataModels.StoredProcedure,
+    options?: any
+  ): Q.Promise<DataModels.StoredProcedure> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.storedProcedures.create(newStoredProcedure, options)
+        .then(response => response.resource as DataModels.StoredProcedure)
+    );
+  }
+
+  public createUserDefinedFunction(
+    collection: ViewModels.Collection,
+    newUserDefinedFunction: DataModels.UserDefinedFunction,
+    options: any
+  ): Q.Promise<DataModels.UserDefinedFunction> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.userDefinedFunctions.create(newUserDefinedFunction, options)
+        .then(response => response.resource as DataModels.UserDefinedFunction)
+    );
+  }
+
+  public createTrigger(
+    collection: ViewModels.Collection,
+    newTrigger: DataModels.Trigger,
+    options?: any
+  ): Q.Promise<DataModels.Trigger> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.triggers.create(newTrigger as TriggerDefinition, options)
+        .then(response => response.resource as DataModels.Trigger)
+    );
+  }
+
+  public deleteDocument(collection: ViewModels.CollectionBase, documentId: ViewModels.DocumentId): Q.Promise<any> {
+    const partitionKey = documentId.partitionKeyValue;
+
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .item(documentId.id(), partitionKey)
+        .delete()
+    );
+  }
+
+  public deleteConflict(
+    collection: ViewModels.CollectionBase,
+    conflictId: ViewModels.ConflictId,
+    options: any = {}
+  ): Q.Promise<any> {
+    options.partitionKey = options.partitionKey || this.getPartitionKeyHeaderForConflict(conflictId);
+
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .conflict(conflictId.id())
+        .delete(options)
+    );
+  }
+
+  public deleteCollection(collection: ViewModels.Collection, options: any): Q.Promise<any> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .delete()
+        .then(() => this.refreshCachedResources())
+    );
+  }
+
+  public deleteDatabase(database: ViewModels.Database, options: any): Q.Promise<any> {
+    return Q(
+      CosmosClient.client()
+        .database(database.id())
+        .delete()
+        .then(() => this.refreshCachedResources())
+    );
+  }
+
+  public deleteStoredProcedure(
+    collection: ViewModels.Collection,
+    storedProcedure: DataModels.StoredProcedure,
+    options: any
+  ): Q.Promise<any> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.storedProcedure(storedProcedure.id)
+        .delete()
+    );
+  }
+
+  public deleteUserDefinedFunction(
+    collection: ViewModels.Collection,
+    userDefinedFunction: DataModels.UserDefinedFunction,
+    options: any
+  ): Q.Promise<any> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.userDefinedFunction(userDefinedFunction.id)
+        .delete()
+    );
+  }
+
+  public deleteTrigger(collection: ViewModels.Collection, trigger: DataModels.Trigger, options: any): Q.Promise<any> {
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .scripts.trigger(trigger.id)
+        .delete()
+    );
+  }
+
+  public readCollections(database: ViewModels.Database, options: any): Q.Promise<DataModels.Collection[]> {
+    return Q(
+      CosmosClient.client()
+        .database(database.id())
+        .containers.readAll()
+        .fetchAll()
+        .then(response => response.resources as DataModels.Collection[])
+    );
+  }
+
+  public readCollection(databaseId: string, collectionId: string): Q.Promise<DataModels.Collection> {
+    return Q(
+      CosmosClient.client()
+        .database(databaseId)
+        .container(collectionId)
+        .read()
+        .then(response => response.resource)
+    );
+  }
+
+  public readCollectionQuotaInfo(
+    collection: ViewModels.Collection,
+    options: any
+  ): Q.Promise<DataModels.CollectionQuotaInfo> {
+    options = options || {};
+    options.populateQuotaInfo = true;
+    options.initialHeaders = options.initialHeaders || {};
+    options.initialHeaders[Constants.HttpHeaders.populatePartitionStatistics] = true;
+
+    return Q(
+      CosmosClient.client()
+        .database(collection.databaseId)
+        .container(collection.id())
+        .read(options)
+        // TODO any needed because SDK does not properly type response.resource.statistics
+        .then((response: any) => {
+          let quota: DataModels.CollectionQuotaInfo = HeadersUtility.getQuota(response.headers);
+          quota["usageSizeInKB"] = response.resource.statistics.reduce(
+            (
+              previousValue: number,
+              currentValue: DataModels.Statistic,
+              currentIndex: number,
+              array: DataModels.Statistic[]
+            ) => {
+              return previousValue + currentValue.sizeInKB;
+            },
+            0
+          );
+          quota["numPartitions"] = response.resource.statistics.length;
+          quota["uniqueKeyPolicy"] = collection.uniqueKeyPolicy; // TODO: Remove after refactoring (#119617)
+          return quota;
+        })
+    );
+  }
+
+  public readOffers(options: any): Q.Promise<DataModels.Offer[]> {
+    return Q(
+      CosmosClient.client()
+        .offers.readAll()
+        .fetchAll()
+        .then(response => response.resources)
+    );
+  }
+
+  public readOffer(requestedResource: DataModels.Offer, options: any): Q.Promise<DataModels.OfferWithHeaders> {
+    options = options || {};
+    options.initialHeaders = options.initialHeaders || {};
+    if (!OfferUtils.isOfferV1(requestedResource)) {
+      options.initialHeaders[Constants.HttpHeaders.populateCollectionThroughputInfo] = true;
+    }
+
+    return Q(
+      CosmosClient.client()
+        .offer(requestedResource.id)
+        .read(options)
+        .then(response => ({ ...response.resource, headers: response.headers }))
+    );
+  }
+
+  public readDatabases(options: any): Q.Promise<DataModels.Database[]> {
+    return Q(
+      CosmosClient.client()
+        .databases.readAll()
+        .fetchAll()
+        .then(response => response.resources as DataModels.Database[])
+    );
+  }
+
+  public getOrCreateDatabaseAndCollection(
+    request: DataModels.CreateDatabaseAndCollectionRequest,
+    options: any
+  ): Q.Promise<DataModels.Collection> {
+    const databaseOptions: any = options && _.omit(options, "sharedOfferThroughput");
+    const {
+      databaseId,
+      databaseLevelThroughput,
+      collectionId,
+      partitionKey,
+      indexingPolicy,
+      uniqueKeyPolicy,
+      offerThroughput,
+      analyticalStorageTtl,
+      hasAutoPilotV2FeatureFlag
+    } = request;
+
+    const createBody: DatabaseRequest = {
+      id: databaseId
+    };
+
+    // TODO: replace when SDK support autopilot
+    const initialHeaders = request.autoPilot
+      ? !hasAutoPilotV2FeatureFlag
+        ? {
+            [Constants.HttpHeaders.autoPilotThroughput]: JSON.stringify({
+              maxThroughput: request.autoPilot.maxThroughput
+            })
+          }
+        : {
+            [Constants.HttpHeaders.autoPilotTier]: request.autoPilot.autopilotTier
+          }
+      : undefined;
+    if (databaseLevelThroughput) {
+      if (request.autoPilot) {
+        databaseOptions.initialHeaders = initialHeaders;
+      }
+      createBody.throughput = offerThroughput;
+    }
+
+    return Q(
+      CosmosClient.client()
+        .databases.createIfNotExists(createBody, databaseOptions)
+        .then(response => {
+          return response.database.containers.create(
+            {
+              id: collectionId,
+              partitionKey: (partitionKey || undefined) as PartitionKeyDefinition,
+              indexingPolicy: indexingPolicy ? indexingPolicy : undefined,
+              uniqueKeyPolicy: uniqueKeyPolicy ? uniqueKeyPolicy : undefined,
+              analyticalStorageTtl: analyticalStorageTtl,
+              throughput: databaseLevelThroughput || request.autoPilot ? undefined : offerThroughput
+            } as ContainerRequest, // TODO: remove cast when https://github.com/Azure/azure-cosmos-js/issues/423 is fixed
+            {
+              initialHeaders: databaseLevelThroughput ? undefined : initialHeaders
+            }
+          );
+        })
+        .then(containerResponse => containerResponse.resource)
+        .finally(() => this.refreshCachedResources(options))
+    );
+  }
+
+  public createDatabase(request: DataModels.CreateDatabaseRequest, options: any): Q.Promise<DataModels.Database> {
+    var deferred = Q.defer<DataModels.Database>();
+
+    this._createDatabase(request, options).then(
+      (createdDatabase: DataModels.Database) => {
+        this.refreshCachedOffers().then(() => {
+          deferred.resolve(createdDatabase);
+        });
+      },
+      _createDatabaseError => {
+        deferred.reject(_createDatabaseError);
+      }
+    );
+
+    return deferred.promise;
+  }
+
+  public refreshCachedOffers(): Q.Promise<void> {
+    if (MessageHandler.canSendMessage()) {
+      return MessageHandler.sendCachedDataMessage(MessageTypes.RefreshOffers, []);
+    } else {
+      return Q();
+    }
+  }
+
+  public refreshCachedResources(options?: any): Q.Promise<void> {
+    if (MessageHandler.canSendMessage()) {
+      return MessageHandler.sendCachedDataMessage(MessageTypes.RefreshResources, []);
+    } else {
+      return Q();
+    }
+  }
+
+  public readSubscription(subscriptionId: string, options: any): Q.Promise<DataModels.Subscription> {
+    throw new Error("Read subscription not supported on this platform");
+  }
+
+  public readSubscriptionDefaults(subscriptionId: string, quotaId: string, options: any): Q.Promise<string> {
+    throw new Error("Read subscription defaults not supported on this platform");
+  }
+
+  public queryConflicts(
+    databaseId: string,
+    containerId: string,
+    query: string,
+    options: any
+  ): Q.Promise<QueryIterator<ConflictDefinition & Resource>> {
+    const documentsIterator = CosmosClient.client()
+      .database(databaseId)
+      .container(containerId)
+      .conflicts.query(query, options);
+    return Q(documentsIterator);
+  }
+
+  public updateOfferThroughputBeyondLimit(
+    request: DataModels.UpdateOfferThroughputRequest,
+    options: any
+  ): Q.Promise<void> {
+    throw new Error("Updating throughput beyond specified limit is not supported on this platform");
+  }
+
+  private _createDatabase(
+    request: DataModels.CreateDatabaseRequest,
+    options: any = {}
+  ): Q.Promise<DataModels.Database> {
+    const { databaseId, databaseLevelThroughput, offerThroughput, autoPilot, hasAutoPilotV2FeatureFlag } = request;
+    const createBody: DatabaseRequest = { id: databaseId };
+    const databaseOptions: any = options && _.omit(options, "sharedOfferThroughput");
+    // TODO: replace when SDK support autopilot
+    const initialHeaders = autoPilot
+      ? !hasAutoPilotV2FeatureFlag
+        ? {
+            [Constants.HttpHeaders.autoPilotThroughput]: JSON.stringify({ maxThroughput: autoPilot.maxThroughput })
+          }
+        : {
+            [Constants.HttpHeaders.autoPilotTier]: autoPilot.autopilotTier
+          }
+      : undefined;
+    if (!!databaseLevelThroughput) {
+      if (autoPilot) {
+        databaseOptions.initialHeaders = initialHeaders;
+      }
+      createBody.throughput = offerThroughput;
+    }
+
+    return Q(
+      CosmosClient.client()
+        .databases.create(createBody, databaseOptions)
+        .then((response: DatabaseResponse) => {
+          return this.refreshCachedResources(databaseOptions).then(() => response.resource);
+        })
+    );
+  }
+}
--- a/src/Common/DeleteFeedback.ts
+++ b/src/Common/DeleteFeedback.ts
@@ -0,0 +1,15 @@
+import * as DataModels from "../Contracts/DataModels";
+
+export default class DeleteFeedback {
+  subscriptionId: string;
+  accountName: string;
+  apiType: DataModels.ApiKind;
+  feedback: string;
+
+  constructor(subscriptionId: string, accountName: string, apiType: DataModels.ApiKind, feedback: string) {
+    this.subscriptionId = subscriptionId;
+    this.accountName = accountName;
+    this.apiType = apiType;
+    this.feedback = feedback;
+  }
+}
--- a/src/Common/DocumentClientUtilityBase.ts
+++ b/src/Common/DocumentClientUtilityBase.ts
--- a/src/Common/EditableUtility.ts
+++ b/src/Common/EditableUtility.ts
@@ -0,0 +1,94 @@
+import * as ko from "knockout";
+import * as ViewModels from "../Contracts/ViewModels";
+
+export default class EditableUtility {
+  public static observable<T>(initialValue?: T): ViewModels.Editable<T> {
+    var observable: ViewModels.Editable<T> = <ViewModels.Editable<T>>ko.observable<T>(initialValue);
+
+    observable.edits = ko.observableArray<T>([initialValue]);
+    observable.validations = ko.observableArray<(value: T) => boolean>([]);
+
+    observable.setBaseline = (baseline: T) => {
+      observable(baseline);
+      observable.edits([baseline]);
+    };
+
+    observable.getEditableCurrentValue = ko.computed<T>(() => {
+      const edits = (observable.edits && observable.edits()) || [];
+      if (edits.length === 0) {
+        return undefined;
+      }
+
+      return edits[edits.length - 1];
+    });
+
+    observable.getEditableOriginalValue = ko.computed<T>(() => {
+      const edits = (observable.edits && observable.edits()) || [];
+      if (edits.length === 0) {
+        return undefined;
+      }
+
+      return edits[0];
+    });
+
+    observable.editableIsDirty = ko.computed<boolean>(() => {
+      const edits = (observable.edits && observable.edits()) || [];
+      if (edits.length <= 1) {
+        return false;
+      }
+
+      let current: any = observable.getEditableCurrentValue();
+      let original: any = observable.getEditableOriginalValue();
+
+      switch (typeof current) {
+        case "string":
+        case "undefined":
+        case "number":
+        case "boolean":
+          current = current && current.toString();
+          break;
+
+        default:
+          current = JSON.stringify(current);
+          break;
+      }
+
+      switch (typeof original) {
+        case "string":
+        case "undefined":
+        case "number":
+        case "boolean":
+          original = original && original.toString();
+          break;
+
+        default:
+          original = JSON.stringify(original);
+          break;
+      }
+
+      if (current !== original) {
+        return true;
+      }
+
+      return false;
+    });
+
+    observable.subscribe(edit => {
+      var edits = observable.edits && observable.edits();
+      if (!edits) {
+        return;
+      }
+      edits.push(edit);
+      observable.edits(edits);
+    });
+
+    observable.editableIsValid = ko.observable<boolean>(true);
+    observable.subscribe(value => {
+      const validations: ((value: T) => boolean)[] = (observable.validations && observable.validations()) || [];
+      const isValid = validations.every(validate => validate(value));
+      observable.editableIsValid(isValid);
+    });
+
+    return observable;
+  }
+}
--- a/src/Common/EnvironmentUtility.ts
+++ b/src/Common/EnvironmentUtility.ts
@@ -0,0 +1,48 @@
+import * as Constants from "../Common/Constants";
+import * as ViewModels from "../Contracts/ViewModels";
+import { AuthType } from "../AuthType";
+import { StringUtils } from "../Utils/StringUtils";
+
+export default class EnvironmentUtility {
+  public static getMongoBackendEndpoint(serverId: string, location: string, extensionEndpoint: string = ""): string {
+    const defaultEnvironment: string = "default";
+    const defaultLocation: string = "default";
+    let environment: string = serverId;
+    const endpointType: Constants.MongoBackendEndpointType =
+      Constants.MongoBackend.endpointsByEnvironment[environment] ||
+      Constants.MongoBackend.endpointsByEnvironment[defaultEnvironment];
+    if (endpointType === Constants.MongoBackendEndpointType.local) {
+      return `${extensionEndpoint}${Constants.MongoBackend.localhostEndpoint}`;
+    }
+
+    const normalizedLocation = EnvironmentUtility.normalizeRegionName(location);
+    return (
+      Constants.MongoBackend.endpointsByRegion[normalizedLocation] ||
+      Constants.MongoBackend.endpointsByRegion[defaultLocation]
+    );
+  }
+
+  public static isAadUser(): boolean {
+    return window.authType === AuthType.AAD;
+  }
+
+  public static getCassandraBackendEndpoint(explorer: ViewModels.Explorer): string {
+    const defaultLocation: string = "default";
+    const location: string = EnvironmentUtility.normalizeRegionName(explorer.databaseAccount().location);
+    return (
+      Constants.CassandraBackend.endpointsByRegion[location] ||
+      Constants.CassandraBackend.endpointsByRegion[defaultLocation]
+    );
+  }
+
+  public static normalizeArmEndpointUri(uri: string): string {
+    if (uri && uri.slice(-1) !== "/") {
+      return `${uri}/`;
+    }
+    return uri;
+  }
+
+  private static normalizeRegionName(region: string): string {
+    return region && StringUtils.stripSpacesFromString(region.toLocaleLowerCase());
+  }
+}
--- a/src/Common/ErrorParserUtility.test.ts
+++ b/src/Common/ErrorParserUtility.test.ts
@@ -0,0 +1,24 @@
+import * as ErrorParserUtility from "./ErrorParserUtility";
+
+describe("Error Parser Utility", () => {
+  describe("shouldEnableCrossPartitionKeyForResourceWithPartitionKey()", () => {
+    it("should parse a backend error correctly", () => {
+      // A fake error matching what is thrown by the SDK on a bad collection create request
+      const innerMessage =
+        "The partition key component definition path '/asdwqr31 @#$#$WRadf' could not be accepted, failed near position '10'. Partition key paths must contain only valid characters and not contain a trailing slash or wildcard character.";
+      const message = `Message: {\"Errors\":[\"${innerMessage}\"]}\r\nActivityId: 97b2e684-7505-4921-85f6-2513b9b28220, Request URI: /apps/89fdcf25-2a0b-4d2a-aab6-e161e565b26f/services/54911149-7bb1-4e7d-a1fa-22c8b36a4bb9/partitions/cc2a7a04-5f5a-4709-bcf7-8509b264963f/replicas/132304018743619218p, RequestStats: , SDK: Microsoft.Azure.Documents.Common/2.10.0`;
+      const err = new Error(message) as any;
+      err.code = 400;
+      err.body = {
+        code: "BadRequest",
+        message
+      };
+      err.headers = {};
+      err.activityId = "97b2e684-7505-4921-85f6-2513b9b28220";
+
+      const parsedError = ErrorParserUtility.parse(err);
+      expect(parsedError.length).toBe(1);
+      expect(parsedError[0].message).toBe(innerMessage);
+    });
+  });
+});
--- a/src/Common/ErrorParserUtility.ts
+++ b/src/Common/ErrorParserUtility.ts
@@ -0,0 +1,67 @@
+import * as DataModels from "../Contracts/DataModels";
+import * as ViewModels from "../Contracts/ViewModels";
+
+export function replaceKnownError(err: string): string {
+  if (
+    window.dataExplorer.subscriptionType() === ViewModels.SubscriptionType.Internal &&
+    err.indexOf("SharedOffer is Disabled for your account") >= 0
+  ) {
+    return "Database throughput is not supported for internal subscriptions.";
+  }
+
+  return err;
+}
+
+export function parse(err: any): DataModels.ErrorDataModel[] {
+  try {
+    return _parse(err);
+  } catch (e) {
+    return [<DataModels.ErrorDataModel>{ message: JSON.stringify(err) }];
+  }
+}
+
+function _parse(err: any): DataModels.ErrorDataModel[] {
+  var normalizedErrors: DataModels.ErrorDataModel[] = [];
+  if (err.message && !err.code) {
+    normalizedErrors.push(err);
+  } else {
+    const innerErrors: any[] = _getInnerErrors(err.message);
+    normalizedErrors = innerErrors.map(innerError =>
+      typeof innerError === "string" ? { message: innerError } : innerError
+    );
+  }
+
+  return normalizedErrors;
+}
+
+function _getInnerErrors(message: string): any[] {
+  /*
+            The backend error message has an inner-message which is a stringified object. 
+
+            For SQL errors, the "errors" property is an array of SqlErrorDataModel.
+            Example:
+                "Message: {"Errors":["Resource with specified id or name already exists"]}\r\nActivityId: 80005000008d40b6a, Request URI: /apps/19000c000c0a0005/services/mctestdocdbprod-MasterService-0-00066ab9937/partitions/900005f9000e676fb8/replicas/13000000000955p"
+            For non-SQL errors the "Errors" propery is an array of string.
+            Example:
+                "Message: {"errors":[{"severity":"Error","location":{"start":7,"end":8},"code":"SC1001","message":"Syntax error, incorrect syntax near '.'."}]}\r\nActivityId: d3300016d4084e310a, Request URI: /apps/12401f9e1df77/services/dc100232b1f44545/partitions/f86f3bc0001a2f78/replicas/13085003638s"
+        */
+
+  let innerMessage: any = null;
+
+  const singleLineMessage = message.replace(/[\r\n]|\r|\n/g, "");
+  try {
+    // Multi-Partition error flavor
+    const regExp = /^(.*)ActivityId: (.*)/g;
+    const regString = regExp.exec(singleLineMessage);
+    const innerMessageString = regString[1];
+    innerMessage = JSON.parse(innerMessageString);
+  } catch (e) {
+    // Single-partition error flavor
+    const regExp = /^Message: (.*)ActivityId: (.*), Request URI: (.*)/g;
+    const regString = regExp.exec(singleLineMessage);
+    const innerMessageString = regString[1];
+    innerMessage = JSON.parse(innerMessageString);
+  }
+
+  return innerMessage.errors ? innerMessage.errors : innerMessage.Errors;
+}
--- a/src/Common/HashMap.test.ts
+++ b/src/Common/HashMap.test.ts
@@ -0,0 +1,70 @@
+import { HashMap } from "./HashMap";
+
+describe("HashMap", () => {
+  it("should test if key/val exists", () => {
+    const map = new HashMap<number>();
+    map.set("a", 123);
+
+    expect(map.has("a")).toBe(true);
+    expect(map.has("b")).toBe(false);
+  });
+
+  it("should get object back", () => {
+    const map = new HashMap<string>();
+    map.set("a", "123");
+    map.set("a", "456");
+
+    expect(map.get("a")).toBe("456");
+    expect(map.get("a")).not.toBe("123");
+  });
+
+  it("should return the right size", () => {
+    const map = new HashMap<string>();
+    map.set("a", "123");
+    map.set("b", "456");
+
+    expect(map.size()).toBe(2);
+  });
+
+  it("should be iterable", () => {
+    const map = new HashMap<number>();
+    map.set("a", 1);
+    map.set("b", 10);
+    map.set("c", 100);
+    map.set("d", 1000);
+
+    let i = 0;
+    map.forEach((key: string, value: number) => {
+      i += value;
+    });
+    expect(i).toBe(1111);
+  });
+
+  it("should be deleted", () => {
+    const map = new HashMap<number>();
+    map.set("a", 1);
+    map.set("b", 10);
+
+    expect(map.delete("a")).toBe(true);
+    expect(map.delete("c")).toBe(false);
+    expect(map.has("a")).toBe(false);
+    expect(map.has("b")).toBe(true);
+  });
+
+  it("should clear", () => {
+    const map = new HashMap<number>();
+    map.set("a", 1);
+    map.clear();
+    expect(map.size()).toBe(0);
+    expect(map.has("a")).toBe(false);
+  });
+
+  it("should return all keys", () => {
+    const map = new HashMap<number>();
+    map.set("a", 1);
+    map.set("b", 1);
+    expect(map.keys()).toEqual(["a", "b"]);
+    map.clear();
+    expect(map.keys().length).toBe(0);
+  });
+});
--- a/src/Common/HashMap.ts
+++ b/src/Common/HashMap.ts
@@ -0,0 +1,45 @@
+/**
+ * Simple hashmap implementation that doesn't rely on ES6 Map nor polyfills
+ */
+export class HashMap<T> {
+  constructor(private container: { [key: string]: T } = {}) {}
+
+  public has(key: string): boolean {
+    return this.container.hasOwnProperty(key);
+  }
+
+  public set(key: string, value: T): void {
+    this.container[key] = value;
+  }
+
+  public get(key: string): T {
+    return this.container[key];
+  }
+
+  public size(): number {
+    return Object.keys(this.container).length;
+  }
+
+  public delete(key: string): boolean {
+    if (this.has(key)) {
+      delete this.container[key];
+      return true;
+    }
+
+    return false;
+  }
+
+  public clear(): void {
+    this.container = {};
+  }
+
+  public keys(): string[] {
+    return Object.keys(this.container);
+  }
+
+  public forEach(iteratorFct: (key: string, value: T) => void) {
+    for (const k in this.container) {
+      iteratorFct(k, this.container[k]);
+    }
+  }
+}
--- a/src/Common/HeadersUtility.test.ts
+++ b/src/Common/HeadersUtility.test.ts
@@ -0,0 +1,25 @@
+import * as HeadersUtility from "./HeadersUtility";
+import { ExplorerSettings } from "../Shared/ExplorerSettings";
+import { LocalStorageUtility, StorageKey } from "../Shared/StorageUtility";
+
+describe("Headers Utility", () => {
+  describe("shouldEnableCrossPartitionKeyForResourceWithPartitionKey()", () => {
+    beforeEach(() => {
+      ExplorerSettings.createDefaultSettings();
+    });
+
+    it("should return true by default", () => {
+      expect(HeadersUtility.shouldEnableCrossPartitionKey()).toBe(true);
+    });
+
+    it("should return false if the enable cross partition key feed option is false", () => {
+      LocalStorageUtility.setEntryString(StorageKey.IsCrossPartitionQueryEnabled, "false");
+      expect(HeadersUtility.shouldEnableCrossPartitionKey()).toBe(false);
+    });
+
+    it("should return true if the enable cross partition key feed option is true", () => {
+      LocalStorageUtility.setEntryString(StorageKey.IsCrossPartitionQueryEnabled, "true");
+      expect(HeadersUtility.shouldEnableCrossPartitionKey()).toBe(true);
+    });
+  });
+});
--- a/src/Common/HeadersUtility.ts
+++ b/src/Common/HeadersUtility.ts
@@ -0,0 +1,28 @@
+import * as Constants from "./Constants";
+
+import { LocalStorageUtility, StorageKey } from "../Shared/StorageUtility";
+
+// x-ms-resource-quota: databases = 100; collections = 5000; users = 500000; permissions = 2000000;
+export function getQuota(responseHeaders: any): any {
+  return responseHeaders && responseHeaders[Constants.HttpHeaders.resourceQuota]
+    ? parseStringIntoObject(responseHeaders[Constants.HttpHeaders.resourceQuota])
+    : null;
+}
+
+export function shouldEnableCrossPartitionKey(): boolean {
+  return LocalStorageUtility.getEntryString(StorageKey.IsCrossPartitionQueryEnabled) === "true";
+}
+
+function parseStringIntoObject(resourceString: string) {
+  var entityObject: any = {};
+
+  if (resourceString) {
+    var entitiesArray: string[] = resourceString.split(";");
+    for (var i: any = 0; i < entitiesArray.length; i++) {
+      var entity: string[] = entitiesArray[i].split("=");
+      entityObject[entity[0]] = entity[1];
+    }
+  }
+
+  return entityObject;
+}
--- a/src/Common/IteratorUtilities.test.ts
+++ b/src/Common/IteratorUtilities.test.ts
@@ -0,0 +1,20 @@
+import { nextPage } from "./IteratorUtilities";
+
+describe("nextPage", () => {
+  it("returns results for the next page", async () => {
+    const fakeIterator = {
+      fetchNext: () =>
+        Promise.resolve({
+          resources: [],
+          hasMoreResults: false,
+          continuation: "foo",
+          queryMetrics: {},
+          requestCharge: 1,
+          headers: {},
+          activityId: "foo"
+        })
+    };
+
+    expect(await nextPage(fakeIterator, 10)).toMatchSnapshot();
+  });
+});
--- a/src/Common/IteratorUtilities.ts
+++ b/src/Common/IteratorUtilities.ts
@@ -0,0 +1,32 @@
+import { QueryResults } from "../Contracts/ViewModels";
+
+interface QueryResponse {
+  resources: any[];
+  hasMoreResults: boolean;
+  activityId: string;
+  requestCharge: number;
+}
+
+export interface MinimalQueryIterator {
+  fetchNext: () => Promise<QueryResponse>;
+}
+
+// Pick<QueryIterator<any>, "fetchNext">;
+
+export function nextPage(documentsIterator: MinimalQueryIterator, firstItemIndex: number): Promise<QueryResults> {
+  return documentsIterator.fetchNext().then(response => {
+    const documents = response.resources;
+    const headers = (response as any).headers || {}; // TODO this is a private key. Remove any
+    const itemCount = (documents && documents.length) || 0;
+    return {
+      documents,
+      hasMoreResults: response.hasMoreResults,
+      itemCount,
+      firstItemIndex: Number(firstItemIndex) + 1,
+      lastItemIndex: Number(firstItemIndex) + Number(itemCount),
+      headers,
+      activityId: response.activityId,
+      requestCharge: response.requestCharge
+    };
+  });
+}
--- a/src/Common/Logger.test.ts
+++ b/src/Common/Logger.test.ts
@@ -0,0 +1,46 @@
+import { LogEntryLevel } from "../Contracts/Diagnostics";
+import { Logger } from "./Logger";
+import { MessageHandler } from "./MessageHandler";
+import { MessageTypes } from "../Contracts/ExplorerContracts";
+
+describe("Logger", () => {
+  let sendMessageSpy: jasmine.Spy;
+
+  beforeEach(() => {
+    sendMessageSpy = spyOn(MessageHandler, "sendMessage");
+  });
+
+  afterEach(() => {
+    sendMessageSpy = null;
+  });
+
+  it("should log info messages", () => {
+    Logger.logInfo("Test info", "DocDB");
+    const spyArgs = sendMessageSpy.calls.mostRecent().args[0];
+
+    expect(spyArgs.type).toBe(MessageTypes.LogInfo);
+    expect(spyArgs.data).toContain(LogEntryLevel.Verbose);
+    expect(spyArgs.data).toContain("DocDB");
+    expect(spyArgs.data).toContain("Test info");
+  });
+
+  it("should log error messages", () => {
+    Logger.logError("Test error", "DocDB");
+    const spyArgs = sendMessageSpy.calls.mostRecent().args[0];
+
+    expect(spyArgs.type).toBe(MessageTypes.LogInfo);
+    expect(spyArgs.data).toContain(LogEntryLevel.Error);
+    expect(spyArgs.data).toContain("DocDB");
+    expect(spyArgs.data).toContain("Test error");
+  });
+
+  it("should log warnings", () => {
+    Logger.logWarning("Test warning", "DocDB");
+    const spyArgs = sendMessageSpy.calls.mostRecent().args[0];
+
+    expect(spyArgs.type).toBe(MessageTypes.LogInfo);
+    expect(spyArgs.data).toContain(LogEntryLevel.Warning);
+    expect(spyArgs.data).toContain("DocDB");
+    expect(spyArgs.data).toContain("Test warning");
+  });
+});
--- a/src/Common/Logger.ts
+++ b/src/Common/Logger.ts
@@ -0,0 +1,87 @@
+import { MessageHandler } from "./MessageHandler";
+import { Diagnostics, MessageTypes } from "../Contracts/ExplorerContracts";
+import { appInsights } from "../Shared/appInsights";
+import { SeverityLevel } from "@microsoft/applicationinsights-web";
+
+// TODO: Move to a separate Diagnostics folder
+export class Logger {
+  public static logInfo(message: string | Record<string, any>, area: string, code?: number): void {
+    let logMessage: string;
+    if (typeof message === "string") {
+      logMessage = message;
+    } else {
+      logMessage = JSON.stringify(message, Object.getOwnPropertyNames(message));
+    }
+    const entry: Diagnostics.LogEntry = Logger._generateLogEntry(
+      Diagnostics.LogEntryLevel.Verbose,
+      logMessage,
+      area,
+      code
+    );
+    return Logger._logEntry(entry);
+  }
+
+  public static logWarning(message: string, area: string, code?: number): void {
+    const entry: Diagnostics.LogEntry = Logger._generateLogEntry(
+      Diagnostics.LogEntryLevel.Warning,
+      message,
+      area,
+      code
+    );
+    return Logger._logEntry(entry);
+  }
+
+  public static logError(message: string | Error, area: string, code?: number): void {
+    let logMessage: string;
+    if (typeof message === "string") {
+      logMessage = message;
+    } else {
+      logMessage = JSON.stringify(message, Object.getOwnPropertyNames(message));
+    }
+    const entry: Diagnostics.LogEntry = Logger._generateLogEntry(
+      Diagnostics.LogEntryLevel.Error,
+      logMessage,
+      area,
+      code
+    );
+    return Logger._logEntry(entry);
+  }
+
+  private static _logEntry(entry: Diagnostics.LogEntry): void {
+    MessageHandler.sendMessage({
+      type: MessageTypes.LogInfo,
+      data: JSON.stringify(entry)
+    });
+
+    const severityLevel = ((level: Diagnostics.LogEntryLevel): SeverityLevel => {
+      switch (level) {
+        case Diagnostics.LogEntryLevel.Custom:
+        case Diagnostics.LogEntryLevel.Debug:
+        case Diagnostics.LogEntryLevel.Verbose:
+          return SeverityLevel.Verbose;
+        case Diagnostics.LogEntryLevel.Warning:
+          return SeverityLevel.Warning;
+        case Diagnostics.LogEntryLevel.Error:
+          return SeverityLevel.Error;
+        default:
+          return SeverityLevel.Information;
+      }
+    })(entry.level);
+    appInsights.trackTrace({ message: entry.message, severityLevel }, { area: entry.area });
+  }
+
+  private static _generateLogEntry(
+    level: Diagnostics.LogEntryLevel,
+    message: string,
+    area: string,
+    code: number
+  ): Diagnostics.LogEntry {
+    return {
+      timestamp: new Date().getUTCSeconds(),
+      level: level,
+      message: message,
+      area: area,
+      code: code
+    };
+  }
+}
--- a/src/Common/MessageHandler.test.ts
+++ b/src/Common/MessageHandler.test.ts
@@ -0,0 +1,65 @@
+import Q from "q";
+import { CachedDataPromise, MessageHandler } from "./MessageHandler";
+import { MessageTypes } from "../Contracts/ExplorerContracts";
+
+class MockMessageHandler extends MessageHandler {
+  public static addToMap(key: string, value: CachedDataPromise<any>): void {
+    MessageHandler.RequestMap[key] = value;
+  }
+
+  public static mapContainsKey(key: string): boolean {
+    return MessageHandler.RequestMap[key] != null;
+  }
+
+  public static clearAllEntries(): void {
+    MessageHandler.RequestMap = {};
+  }
+
+  public static runGarbageCollector(): void {
+    MessageHandler.runGarbageCollector();
+  }
+}
+
+describe("Message Handler", () => {
+  beforeEach(() => {
+    MockMessageHandler.clearAllEntries();
+  });
+
+  xit("should send cached data message", (done: any) => {
+    const testValidationCallback = (e: MessageEvent) => {
+      expect(e.data.data).toEqual(
+        jasmine.objectContaining({ type: MessageTypes.AllDatabases, params: ["some param"] })
+      );
+      e.currentTarget.removeEventListener(e.type, testValidationCallback);
+      done();
+    };
+    window.parent.addEventListener("message", testValidationCallback);
+    MockMessageHandler.sendCachedDataMessage(MessageTypes.AllDatabases, ["some param"]);
+  });
+
+  it("should handle cached message", () => {
+    let mockPromise: CachedDataPromise<any> = {
+      id: "123",
+      startTime: new Date(),
+      deferred: Q.defer<any>()
+    };
+    let mockMessage = { message: { id: "123", data: "{}" } };
+
+    MockMessageHandler.addToMap(mockPromise.id, mockPromise);
+    MockMessageHandler.handleCachedDataMessage(mockMessage);
+    expect(mockPromise.deferred.promise.isFulfilled()).toBe(true);
+  });
+
+  it("should delete fulfilled promises on running the garbage collector", () => {
+    let mockPromise: CachedDataPromise<any> = {
+      id: "123",
+      startTime: new Date(),
+      deferred: Q.defer<any>()
+    };
+
+    MockMessageHandler.addToMap(mockPromise.id, mockPromise);
+    mockPromise.deferred.reject("some error");
+    MockMessageHandler.runGarbageCollector();
+    expect(MockMessageHandler.mapContainsKey(mockPromise.id)).toBe(false);
+  });
+});
--- a/src/Common/MessageHandler.ts
+++ b/src/Common/MessageHandler.ts
@@ -0,0 +1,85 @@
+import { MessageTypes } from "../Contracts/ExplorerContracts";
+import Q from "q";
+import * as _ from "underscore";
+import * as Constants from "./Constants";
+
+export interface CachedDataPromise<T> {
+  deferred: Q.Deferred<T>;
+  startTime: Date;
+  id: string;
+}
+
+/**
+ * For some reason, typescript emits a Map() in the compiled js output(despite the target being set to ES5) forcing us to define our own polyfill,
+ * so we define our own custom implementation of the ES6 Map to work around it.
+ */
+type Map = { [key: string]: CachedDataPromise<any> };
+
+export class MessageHandler {
+  protected static RequestMap: Map = {};
+
+  public static handleCachedDataMessage(message: any): void {
+    const messageContent = message && message.message;
+    if (
+      message == null ||
+      messageContent == null ||
+      messageContent.id == null ||
+      !MessageHandler.RequestMap[messageContent.id]
+    ) {
+      return;
+    }
+
+    const cachedDataPromise = MessageHandler.RequestMap[messageContent.id];
+    if (messageContent.error != null) {
+      cachedDataPromise.deferred.reject(messageContent.error);
+    } else {
+      cachedDataPromise.deferred.resolve(JSON.parse(messageContent.data));
+    }
+    MessageHandler.runGarbageCollector();
+  }
+
+  public static sendCachedDataMessage<TResponseDataModel>(
+    messageType: MessageTypes,
+    params: Object[],
+    timeoutInMs?: number
+  ): Q.Promise<TResponseDataModel> {
+    let cachedDataPromise: CachedDataPromise<TResponseDataModel> = {
+      deferred: Q.defer<TResponseDataModel>(),
+      startTime: new Date(),
+      id: _.uniqueId()
+    };
+    MessageHandler.RequestMap[cachedDataPromise.id] = cachedDataPromise;
+    MessageHandler.sendMessage({ type: messageType, params: params, id: cachedDataPromise.id });
+
+    //TODO: Use telemetry to measure optimal time to resolve/reject promises
+    return cachedDataPromise.deferred.promise.timeout(
+      timeoutInMs || Constants.ClientDefaults.requestTimeoutMs,
+      "Timed out while waiting for response from portal"
+    );
+  }
+
+  public static sendMessage(data: any): void {
+    if (MessageHandler.canSendMessage()) {
+      window.parent.postMessage(
+        {
+          signature: "pcIframe",
+          data: data
+        },
+        window.document.referrer
+      );
+    }
+  }
+
+  public static canSendMessage(): boolean {
+    return window.parent !== window;
+  }
+
+  protected static runGarbageCollector() {
+    Object.keys(MessageHandler.RequestMap).forEach((key: string) => {
+      const promise: Q.Promise<any> = MessageHandler.RequestMap[key].deferred.promise;
+      if (promise.isFulfilled() || promise.isRejected()) {
+        delete MessageHandler.RequestMap[key];
+      }
+    });
+  }
+}
--- a/src/Common/MongoProxyClient.test.ts
+++ b/src/Common/MongoProxyClient.test.ts
@@ -0,0 +1,297 @@
+import {
+  _createMongoCollectionWithARM,
+  deleteDocument,
+  getEndpoint,
+  queryDocuments,
+  readDocument,
+  updateDocument
+} from "./MongoProxyClient";
+import { AuthType } from "../AuthType";
+import { Collection, DatabaseAccount, DocumentId } from "../Contracts/ViewModels";
+import { config } from "../Config";
+import { CosmosClient } from "./CosmosClient";
+import { ResourceProviderClient } from "../ResourceProvider/ResourceProviderClient";
+jest.mock("../ResourceProvider/ResourceProviderClient.ts");
+
+const databaseId = "testDB";
+
+const fetchMock = () => {
+  return Promise.resolve({
+    ok: true,
+    text: () => "{}",
+    json: () => "{}",
+    headers: new Map()
+  });
+};
+
+const partitionKeyProperty = "pk";
+
+const collection = {
+  id: () => "testCollection",
+  rid: "testCollectionrid",
+  partitionKeyProperty,
+  partitionKey: {
+    paths: ["/pk"],
+    kind: "Hash",
+    version: 1
+  }
+} as Collection;
+
+const documentId = ({
+  partitionKeyHeader: () => "[]",
+  self: "db/testDB/db/testCollection/docs/testId",
+  partitionKeyProperty,
+  partitionKey: {
+    paths: ["/pk"],
+    kind: "Hash",
+    version: 1
+  }
+} as unknown) as DocumentId;
+
+const databaseAccount = {
+  id: "foo",
+  name: "foo",
+  location: "foo",
+  type: "foo",
+  kind: "foo",
+  properties: {
+    documentEndpoint: "bar",
+    gremlinEndpoint: "foo",
+    tableEndpoint: "foo",
+    cassandraEndpoint: "foo"
+  }
+};
+
+describe("MongoProxyClient", () => {
+  describe("queryDocuments", () => {
+    beforeEach(() => {
+      delete config.BACKEND_ENDPOINT;
+      CosmosClient.databaseAccount(databaseAccount as any);
+      window.dataExplorer = {
+        extensionEndpoint: () => "https://main.documentdb.ext.azure.com",
+        serverId: () => ""
+      } as any;
+      window.fetch = jest.fn().mockImplementation(fetchMock);
+    });
+    afterEach(() => {
+      jest.restoreAllMocks();
+    });
+
+    it("builds the correct URL", () => {
+      queryDocuments(databaseId, collection, true, "{}");
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://main.documentdb.ext.azure.com/api/mongo/explorer/resourcelist?db=testDB&coll=testCollection&resourceUrl=bardbs%2FtestDB%2Fcolls%2FtestCollection%2Fdocs%2F&rid=testCollectionrid&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+
+    it("builds the correct proxy URL in development", () => {
+      config.MONGO_BACKEND_ENDPOINT = "https://localhost:1234";
+      queryDocuments(databaseId, collection, true, "{}");
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://localhost:1234/api/mongo/explorer/resourcelist?db=testDB&coll=testCollection&resourceUrl=bardbs%2FtestDB%2Fcolls%2FtestCollection%2Fdocs%2F&rid=testCollectionrid&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+  });
+  describe("readDocument", () => {
+    beforeEach(() => {
+      delete config.MONGO_BACKEND_ENDPOINT;
+      CosmosClient.databaseAccount(databaseAccount as any);
+      window.dataExplorer = {
+        extensionEndpoint: () => "https://main.documentdb.ext.azure.com",
+        serverId: () => ""
+      } as any;
+      window.fetch = jest.fn().mockImplementation(fetchMock);
+    });
+    afterEach(() => {
+      jest.restoreAllMocks();
+    });
+
+    it("builds the correct URL", () => {
+      readDocument(databaseId, collection, documentId);
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://main.documentdb.ext.azure.com/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+
+    it("builds the correct proxy URL in development", () => {
+      config.MONGO_BACKEND_ENDPOINT = "https://localhost:1234";
+      readDocument(databaseId, collection, documentId);
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://localhost:1234/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+  });
+  describe("createDocument", () => {
+    beforeEach(() => {
+      delete config.MONGO_BACKEND_ENDPOINT;
+      CosmosClient.databaseAccount(databaseAccount as any);
+      window.dataExplorer = {
+        extensionEndpoint: () => "https://main.documentdb.ext.azure.com",
+        serverId: () => ""
+      } as any;
+      window.fetch = jest.fn().mockImplementation(fetchMock);
+    });
+    afterEach(() => {
+      jest.restoreAllMocks();
+    });
+
+    it("builds the correct URL", () => {
+      readDocument(databaseId, collection, documentId);
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://main.documentdb.ext.azure.com/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+
+    it("builds the correct proxy URL in development", () => {
+      config.MONGO_BACKEND_ENDPOINT = "https://localhost:1234";
+      readDocument(databaseId, collection, documentId);
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://localhost:1234/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+  });
+  describe("updateDocument", () => {
+    beforeEach(() => {
+      delete config.MONGO_BACKEND_ENDPOINT;
+      CosmosClient.databaseAccount(databaseAccount as any);
+      window.dataExplorer = {
+        extensionEndpoint: () => "https://main.documentdb.ext.azure.com",
+        serverId: () => ""
+      } as any;
+      window.fetch = jest.fn().mockImplementation(fetchMock);
+    });
+    afterEach(() => {
+      jest.restoreAllMocks();
+    });
+
+    it("builds the correct URL", () => {
+      updateDocument(databaseId, collection, documentId, {});
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://main.documentdb.ext.azure.com/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2Fdocs%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+
+    it("builds the correct proxy URL in development", () => {
+      config.MONGO_BACKEND_ENDPOINT = "https://localhost:1234";
+      updateDocument(databaseId, collection, documentId, {});
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://localhost:1234/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2Fdocs%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+  });
+  describe("deleteDocument", () => {
+    beforeEach(() => {
+      delete config.MONGO_BACKEND_ENDPOINT;
+      CosmosClient.databaseAccount(databaseAccount as any);
+      window.dataExplorer = {
+        extensionEndpoint: () => "https://main.documentdb.ext.azure.com",
+        serverId: () => ""
+      } as any;
+      window.fetch = jest.fn().mockImplementation(fetchMock);
+    });
+    afterEach(() => {
+      jest.restoreAllMocks();
+    });
+
+    it("builds the correct URL", () => {
+      deleteDocument(databaseId, collection, documentId);
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://main.documentdb.ext.azure.com/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2Fdocs%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+
+    it("builds the correct proxy URL in development", () => {
+      config.MONGO_BACKEND_ENDPOINT = "https://localhost:1234";
+      deleteDocument(databaseId, collection, documentId);
+      expect(window.fetch).toHaveBeenCalledWith(
+        "https://localhost:1234/api/mongo/explorer?db=testDB&coll=testCollection&resourceUrl=bardb%2FtestDB%2Fdb%2FtestCollection%2Fdocs%2FtestId&rid=testId&rtype=docs&sid=&rg=&dba=foo&pk=pk",
+        expect.any(Object)
+      );
+    });
+  });
+  describe("getEndpoint", () => {
+    beforeEach(() => {
+      delete config.MONGO_BACKEND_ENDPOINT;
+      delete window.authType;
+      CosmosClient.databaseAccount(databaseAccount as any);
+      window.dataExplorer = {
+        extensionEndpoint: () => "https://main.documentdb.ext.azure.com",
+        serverId: () => ""
+      } as any;
+    });
+
+    it("returns a production endpoint", () => {
+      const endpoint = getEndpoint(databaseAccount as DatabaseAccount);
+      expect(endpoint).toEqual("https://main.documentdb.ext.azure.com/api/mongo/explorer");
+    });
+
+    it("returns a development endpoint", () => {
+      config.MONGO_BACKEND_ENDPOINT = "https://localhost:1234";
+      const endpoint = getEndpoint(databaseAccount as DatabaseAccount);
+      expect(endpoint).toEqual("https://localhost:1234/api/mongo/explorer");
+    });
+
+    it("returns a guest endpoint", () => {
+      window.authType = AuthType.EncryptedToken;
+      const endpoint = getEndpoint(databaseAccount as DatabaseAccount);
+      expect(endpoint).toEqual("https://main.documentdb.ext.azure.com/api/guest/mongo/explorer");
+    });
+  });
+
+  describe("createMongoCollectionWithARM", () => {
+    it("should create a collection with autopilot when autopilot is selected + shared throughput is false", () => {
+      const resourceProviderClientPutAsyncSpy = jest.spyOn(ResourceProviderClient.prototype, "putAsync");
+      const properties = {
+        pk: "state",
+        coll: "abc-collection",
+        cd: true,
+        db: "a1-db",
+        st: false,
+        sid: "a2",
+        rg: "c1",
+        dba: "main",
+        is: false
+      };
+      _createMongoCollectionWithARM("management.azure.com", properties, { "x-ms-cosmos-offer-autopilot-tier": "1" });
+      expect(
+        resourceProviderClientPutAsyncSpy
+      ).toHaveBeenCalledWith(
+        "subscriptions/a2/resourceGroups/c1/providers/Microsoft.DocumentDB/databaseAccounts/foo/mongodbDatabases/a1-db/collections/abc-collection",
+        "2020-03-01",
+        { properties: { options: { "x-ms-cosmos-offer-autopilot-tier": "1" }, resource: { id: "abc-collection" } } }
+      );
+    });
+    it("should create a collection with provisioned throughput when provisioned throughput is selected + shared throughput is false", () => {
+      const resourceProviderClientPutAsyncSpy = jest.spyOn(ResourceProviderClient.prototype, "putAsync");
+      const properties = {
+        pk: "state",
+        coll: "abc-collection",
+        cd: true,
+        db: "a1-db",
+        st: false,
+        sid: "a2",
+        rg: "c1",
+        dba: "main",
+        is: false,
+        offerThroughput: 400
+      };
+      _createMongoCollectionWithARM("management.azure.com", properties, undefined);
+      expect(
+        resourceProviderClientPutAsyncSpy
+      ).toHaveBeenCalledWith(
+        "subscriptions/a2/resourceGroups/c1/providers/Microsoft.DocumentDB/databaseAccounts/foo/mongodbDatabases/a1-db/collections/abc-collection",
+        "2020-03-01",
+        { properties: { options: { throughput: "400" }, resource: { id: "abc-collection" } } }
+      );
+    });
+  });
+});
--- a/src/Common/MongoProxyClient.ts
+++ b/src/Common/MongoProxyClient.ts
@@ -0,0 +1,475 @@
+import * as Constants from "../Common/Constants";
+import * as DataExplorerConstants from "../Common/Constants";
+import * as DataModels from "../Contracts/DataModels";
+import * as ViewModels from "../Contracts/ViewModels";
+import EnvironmentUtility from "./EnvironmentUtility";
+import queryString from "querystring";
+import { AddDbUtilities } from "../Shared/AddDatabaseUtility";
+import { ApiType, HttpHeaders, HttpStatusCodes } from "./Constants";
+import { AuthType } from "../AuthType";
+import { Collection } from "../Contracts/ViewModels";
+import { config } from "../Config";
+import { ConsoleDataType } from "../Explorer/Menus/NotificationConsole/NotificationConsoleComponent";
+import { Constants as CosmosSDKConstants } from "@azure/cosmos";
+import { CosmosClient } from "./CosmosClient";
+import { MessageHandler } from "./MessageHandler";
+import { MessageTypes } from "../Contracts/ExplorerContracts";
+import { NotificationConsoleUtils } from "../Utils/NotificationConsoleUtils";
+import { ResourceProviderClient } from "../ResourceProvider/ResourceProviderClient";
+
+const defaultHeaders = {
+  [HttpHeaders.apiType]: ApiType.MongoDB.toString(),
+  [CosmosSDKConstants.HttpHeaders.MaxEntityCount]: "100",
+  [CosmosSDKConstants.HttpHeaders.Version]: "2017-11-15"
+};
+
+function authHeaders(): any {
+  if (window.authType === AuthType.EncryptedToken) {
+    return { [HttpHeaders.guestAccessToken]: CosmosClient.accessToken() };
+  } else {
+    return { [HttpHeaders.authorization]: CosmosClient.authorizationToken() };
+  }
+}
+
+export function queryIterator(databaseId: string, collection: Collection, query: string) {
+  let continuationToken: string = null;
+  return {
+    fetchNext: () => {
+      return queryDocuments(databaseId, collection, false, query).then(response => {
+        continuationToken = response.continuationToken;
+        let headers = {} as any;
+        response.headers.forEach((value: any, key: any) => {
+          headers[key] = value;
+        });
+        return {
+          resources: response.documents,
+          headers,
+          requestCharge: headers[CosmosSDKConstants.HttpHeaders.RequestCharge],
+          activityId: headers[CosmosSDKConstants.HttpHeaders.ActivityId],
+          hasMoreResults: !!continuationToken
+        };
+      });
+    }
+  };
+}
+
+interface QueryResponse {
+  continuationToken: string;
+  documents: DataModels.DocumentId[];
+  headers: Headers;
+}
+
+export function queryDocuments(
+  databaseId: string,
+  collection: Collection,
+  isResourceList: boolean,
+  query: string,
+  continuationToken?: string
+): Promise<QueryResponse> {
+  const databaseAccount = CosmosClient.databaseAccount();
+  const resourceEndpoint = databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint;
+  const params = {
+    db: databaseId,
+    coll: collection.id(),
+    resourceUrl: `${resourceEndpoint}dbs/${databaseId}/colls/${collection.id()}/docs/`,
+    rid: collection.rid,
+    rtype: "docs",
+    sid: CosmosClient.subscriptionId(),
+    rg: CosmosClient.resourceGroup(),
+    dba: databaseAccount.name,
+    pk:
+      collection && collection.partitionKey && !collection.partitionKey.systemKey ? collection.partitionKeyProperty : ""
+  };
+
+  const endpoint = getEndpoint(databaseAccount) || "";
+
+  const headers = {
+    ...defaultHeaders,
+    ...authHeaders(),
+    [CosmosSDKConstants.HttpHeaders.IsQuery]: "true",
+    [CosmosSDKConstants.HttpHeaders.PopulateQueryMetrics]: "true",
+    [CosmosSDKConstants.HttpHeaders.EnableScanInQuery]: "true",
+    [CosmosSDKConstants.HttpHeaders.EnableCrossPartitionQuery]: "true",
+    [CosmosSDKConstants.HttpHeaders.ParallelizeCrossPartitionQuery]: "true",
+    [HttpHeaders.contentType]: "application/query+json"
+  };
+
+  if (continuationToken) {
+    headers[CosmosSDKConstants.HttpHeaders.Continuation] = continuationToken;
+  }
+
+  const path = isResourceList ? "/resourcelist" : "";
+
+  return window
+    .fetch(`${endpoint}${path}?${queryString.stringify(params)}`, {
+      method: "POST",
+      body: JSON.stringify({ query }),
+      headers
+    })
+    .then(async response => {
+      if (response.ok) {
+        return {
+          continuationToken: response.headers.get(CosmosSDKConstants.HttpHeaders.Continuation),
+          documents: (await response.json()).Documents as DataModels.DocumentId[],
+          headers: response.headers
+        };
+      }
+      const errorMessage = await response.text();
+      if (response.status === HttpStatusCodes.Forbidden) {
+        MessageHandler.sendMessage({
+          type: MessageTypes.ForbiddenError,
+          reason: errorMessage
+        });
+      }
+      throw new Error(errorMessage);
+    });
+}
+
+export function readDocument(
+  databaseId: string,
+  collection: Collection,
+  documentId: ViewModels.DocumentId
+): Promise<DataModels.DocumentId> {
+  const databaseAccount = CosmosClient.databaseAccount();
+  const resourceEndpoint = databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint;
+  const idComponents = documentId.self.split("/");
+  const path = idComponents.slice(0, 4).join("/");
+  const rid = encodeURIComponent(idComponents[5]);
+  const params = {
+    db: databaseId,
+    coll: collection.id(),
+    resourceUrl: `${resourceEndpoint}${path}/${rid}`,
+    rid,
+    rtype: "docs",
+    sid: CosmosClient.subscriptionId(),
+    rg: CosmosClient.resourceGroup(),
+    dba: databaseAccount.name,
+    pk:
+      documentId && documentId.partitionKey && !documentId.partitionKey.systemKey ? documentId.partitionKeyProperty : ""
+  };
+
+  const endpoint = getEndpoint(databaseAccount);
+  return window
+    .fetch(`${endpoint}?${queryString.stringify(params)}`, {
+      method: "GET",
+      headers: {
+        ...defaultHeaders,
+        ...authHeaders(),
+        [CosmosSDKConstants.HttpHeaders.PartitionKey]: encodeURIComponent(
+          JSON.stringify(documentId.partitionKeyHeader())
+        )
+      }
+    })
+    .then(async response => {
+      if (response.ok) {
+        return response.json();
+      }
+      errorHandling(response);
+    });
+}
+
+export function createDocument(
+  databaseId: string,
+  collection: Collection,
+  partitionKeyProperty: string,
+  documentContent: any
+): Promise<DataModels.DocumentId> {
+  const databaseAccount = CosmosClient.databaseAccount();
+  const resourceEndpoint = databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint;
+  const params = {
+    db: databaseId,
+    coll: collection.id(),
+    resourceUrl: `${resourceEndpoint}dbs/${databaseId}/colls/${collection.id()}/docs/`,
+    rid: collection.rid,
+    rtype: "docs",
+    sid: CosmosClient.subscriptionId(),
+    rg: CosmosClient.resourceGroup(),
+    dba: databaseAccount.name,
+    pk: collection && collection.partitionKey && !collection.partitionKey.systemKey ? partitionKeyProperty : ""
+  };
+
+  const endpoint = getEndpoint(databaseAccount);
+
+  return window
+    .fetch(`${endpoint}/resourcelist?${queryString.stringify(params)}`, {
+      method: "POST",
+      body: JSON.stringify(documentContent),
+      headers: {
+        ...defaultHeaders,
+        ...authHeaders()
+      }
+    })
+    .then(async response => {
+      if (response.ok) {
+        return response.json();
+      }
+      errorHandling(response);
+    });
+}
+
+export function updateDocument(
+  databaseId: string,
+  collection: Collection,
+  documentId: ViewModels.DocumentId,
+  documentContent: any
+): Promise<DataModels.DocumentId> {
+  const databaseAccount = CosmosClient.databaseAccount();
+  const resourceEndpoint = databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint;
+  const idComponents = documentId.self.split("/");
+  const path = idComponents.slice(0, 5).join("/");
+  const rid = encodeURIComponent(idComponents[5]);
+  const params = {
+    db: databaseId,
+    coll: collection.id(),
+    resourceUrl: `${resourceEndpoint}${path}/${rid}`,
+    rid,
+    rtype: "docs",
+    sid: CosmosClient.subscriptionId(),
+    rg: CosmosClient.resourceGroup(),
+    dba: databaseAccount.name,
+    pk:
+      documentId && documentId.partitionKey && !documentId.partitionKey.systemKey ? documentId.partitionKeyProperty : ""
+  };
+  const endpoint = getEndpoint(databaseAccount);
+
+  return window
+    .fetch(`${endpoint}?${queryString.stringify(params)}`, {
+      method: "PUT",
+      body: documentContent,
+      headers: {
+        ...defaultHeaders,
+        ...authHeaders(),
+        [HttpHeaders.contentType]: "application/json",
+        [CosmosSDKConstants.HttpHeaders.PartitionKey]: JSON.stringify(documentId.partitionKeyHeader())
+      }
+    })
+    .then(async response => {
+      if (response.ok) {
+        return response.json();
+      }
+      errorHandling(response);
+    });
+}
+
+export function deleteDocument(
+  databaseId: string,
+  collection: Collection,
+  documentId: ViewModels.DocumentId
+): Promise<any> {
+  const databaseAccount = CosmosClient.databaseAccount();
+  const resourceEndpoint = databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint;
+  const idComponents = documentId.self.split("/");
+  const path = idComponents.slice(0, 5).join("/");
+  const rid = encodeURIComponent(idComponents[5]);
+  const params = {
+    db: databaseId,
+    coll: collection.id(),
+    resourceUrl: `${resourceEndpoint}${path}/${rid}`,
+    rid,
+    rtype: "docs",
+    sid: CosmosClient.subscriptionId(),
+    rg: CosmosClient.resourceGroup(),
+    dba: databaseAccount.name,
+    pk:
+      documentId && documentId.partitionKey && !documentId.partitionKey.systemKey ? documentId.partitionKeyProperty : ""
+  };
+  const endpoint = getEndpoint(databaseAccount);
+
+  return window
+    .fetch(`${endpoint}?${queryString.stringify(params)}`, {
+      method: "DELETE",
+      headers: {
+        ...defaultHeaders,
+        ...authHeaders(),
+        [HttpHeaders.contentType]: "application/json",
+        [CosmosSDKConstants.HttpHeaders.PartitionKey]: JSON.stringify(documentId.partitionKeyHeader())
+      }
+    })
+    .then(async response => {
+      if (response.ok) {
+        return;
+      }
+      errorHandling(response);
+    });
+}
+
+export function createMongoCollectionWithProxy(
+  databaseId: string,
+  collectionId: string,
+  offerThroughput: number,
+  shardKey: string,
+  createDatabase: boolean,
+  sharedThroughput: boolean,
+  isSharded: boolean,
+  autopilotOptions?: DataModels.RpOptions
+): Promise<any> {
+  const databaseAccount = CosmosClient.databaseAccount();
+  const params: DataModels.MongoParameters = {
+    resourceUrl: databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint,
+    db: databaseId,
+    coll: collectionId,
+    pk: shardKey,
+    offerThroughput,
+    cd: createDatabase,
+    st: sharedThroughput,
+    is: isSharded,
+    rid: "",
+    rtype: "colls",
+    sid: CosmosClient.subscriptionId(),
+    rg: CosmosClient.resourceGroup(),
+    dba: databaseAccount.name,
+    isAutoPilot: false
+  };
+
+  if (autopilotOptions) {
+    params.isAutoPilot = true;
+    params.autoPilotTier = autopilotOptions[Constants.HttpHeaders.autoPilotTier] as string;
+  }
+
+  const endpoint = getEndpoint(databaseAccount);
+
+  return window
+    .fetch(
+      `${endpoint}/createCollection?${queryString.stringify((params as unknown) as queryString.ParsedUrlQueryInput)}`,
+      {
+        method: "POST",
+        headers: {
+          ...defaultHeaders,
+          ...authHeaders(),
+          [HttpHeaders.contentType]: "application/json"
+        }
+      }
+    )
+    .then(async response => {
+      if (response.ok) {
+        return;
+      }
+      NotificationConsoleUtils.logConsoleMessage(
+        ConsoleDataType.Error,
+        `Error creating collection: ${await response.json()}, Payload: ${params}`
+      );
+      errorHandling(response);
+    });
+}
+
+export function createMongoCollectionWithARM(
+  armEndpoint: string,
+  databaseId: string,
+  analyticalStorageTtl: number,
+  collectionId: string,
+  offerThroughput: number,
+  shardKey: string,
+  createDatabase: boolean,
+  sharedThroughput: boolean,
+  isSharded: boolean,
+  additionalOptions?: DataModels.RpOptions
+): Promise<any> {
+  const databaseAccount = CosmosClient.databaseAccount();
+  const params: DataModels.MongoParameters = {
+    resourceUrl: databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint,
+    db: databaseId,
+    coll: collectionId,
+    pk: shardKey,
+    offerThroughput,
+    cd: createDatabase,
+    st: sharedThroughput,
+    is: isSharded,
+    rid: "",
+    rtype: "colls",
+    sid: CosmosClient.subscriptionId(),
+    rg: CosmosClient.resourceGroup(),
+    dba: databaseAccount.name,
+    analyticalStorageTtl
+  };
+
+  if (createDatabase) {
+    return AddDbUtilities.createMongoDatabaseWithARM(
+      armEndpoint,
+      params,
+      sharedThroughput ? additionalOptions : {}
+    ).then(() => {
+      return _createMongoCollectionWithARM(armEndpoint, params, sharedThroughput ? {} : additionalOptions);
+    });
+  }
+  return _createMongoCollectionWithARM(armEndpoint, params, additionalOptions);
+}
+
+export function getEndpoint(databaseAccount: ViewModels.DatabaseAccount): string {
+  const serverId = window.dataExplorer.serverId();
+  const extensionEndpoint = window.dataExplorer.extensionEndpoint();
+  let url = config.MONGO_BACKEND_ENDPOINT
+    ? config.MONGO_BACKEND_ENDPOINT + "/api/mongo/explorer"
+    : EnvironmentUtility.getMongoBackendEndpoint(serverId, databaseAccount.location, extensionEndpoint);
+
+  if (window.authType === AuthType.EncryptedToken) {
+    url = url.replace("api/mongo", "api/guest/mongo");
+  }
+  return url;
+}
+
+async function errorHandling(response: any): Promise<any> {
+  const errorMessage = await response.text();
+  if (response.status === HttpStatusCodes.Forbidden) {
+    MessageHandler.sendMessage({
+      type: MessageTypes.ForbiddenError,
+      reason: errorMessage
+    });
+  }
+  throw new Error(errorMessage);
+}
+
+export function getARMCreateCollectionEndpoint(params: DataModels.MongoParameters): string {
+  return `subscriptions/${params.sid}/resourceGroups/${params.rg}/providers/Microsoft.DocumentDB/databaseAccounts/${
+    CosmosClient.databaseAccount().name
+  }/mongodbDatabases/${params.db}/collections/${params.coll}`;
+}
+
+export async function _createMongoCollectionWithARM(
+  armEndpoint: string,
+  params: DataModels.MongoParameters,
+  rpOptions: DataModels.RpOptions
+): Promise<any> {
+  const rpPayloadToCreateCollection: DataModels.MongoCreationRequest = {
+    properties: {
+      resource: {
+        id: params.coll
+      },
+      options: {}
+    }
+  };
+
+  if (params.is) {
+    rpPayloadToCreateCollection.properties.resource["shardKey"] = { [params.pk]: "Hash" };
+  }
+
+  if (!params.st) {
+    if (rpOptions) {
+      rpPayloadToCreateCollection.properties.options = rpOptions;
+    } else {
+      rpPayloadToCreateCollection.properties.options["throughput"] =
+        params.offerThroughput && params.offerThroughput.toString();
+    }
+  }
+
+  if (params.analyticalStorageTtl) {
+    rpPayloadToCreateCollection.properties.resource.analyticalStorageTtl = params.analyticalStorageTtl;
+  }
+
+  try {
+    await new ResourceProviderClient(armEndpoint).putAsync(
+      getARMCreateCollectionEndpoint(params),
+      DataExplorerConstants.ArmApiVersions.publicVersion,
+      rpPayloadToCreateCollection
+    );
+  } catch (response) {
+    NotificationConsoleUtils.logConsoleMessage(
+      ConsoleDataType.Error,
+      `Error creating collection: ${JSON.stringify(response)}`
+    );
+    if (response.status === HttpStatusCodes.Forbidden) {
+      MessageHandler.sendMessage({ type: MessageTypes.ForbiddenError });
+      return;
+    }
+    throw new Error(`Error creating collection`);
+  }
+}
--- a/src/Common/MongoUtility.ts
+++ b/src/Common/MongoUtility.ts
@@ -0,0 +1,168 @@
+/*    Copyright 2013 10gen Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+export default class MongoUtility {
+  public static tojson = function(x: any, indent: string, nolint: boolean) {
+    if (x === null || x === undefined) {
+      return String(x);
+    }
+    indent = indent || "";
+
+    switch (typeof x) {
+      case "string":
+        var out = new Array(x.length + 1);
+        out[0] = '"';
+        for (var i = 0; i < x.length; i++) {
+          if (x[i] === '"') {
+            out[out.length] = '\\"';
+          } else if (x[i] === "\\") {
+            out[out.length] = "\\\\";
+          } else if (x[i] === "\b") {
+            out[out.length] = "\\b";
+          } else if (x[i] === "\f") {
+            out[out.length] = "\\f";
+          } else if (x[i] === "\n") {
+            out[out.length] = "\\n";
+          } else if (x[i] === "\r") {
+            out[out.length] = "\\r";
+          } else if (x[i] === "\t") {
+            out[out.length] = "\\t";
+          } else {
+            var code = x.charCodeAt(i);
+            if (code < 0x20) {
+              out[out.length] = (code < 0x10 ? "\\u000" : "\\u00") + code.toString(16);
+            } else {
+              out[out.length] = x[i];
+            }
+          }
+        }
+        return out.join("") + '"';
+      case "number":
+      /* falls through */
+      case "boolean":
+        return "" + x;
+      case "object":
+        var func = $.isArray(x) ? MongoUtility.tojsonArray : MongoUtility.tojsonObject;
+        var s = func(x, indent, nolint);
+        if (
+          (nolint === null || nolint === undefined || nolint === true) &&
+          s.length < 80 &&
+          (indent === null || indent.length === 0)
+        ) {
+          s = s.replace(/[\t\r\n]+/gm, " ");
+        }
+        return s;
+      case "function":
+        return x.toString();
+      default:
+        throw new Error("tojson can't handle type " + typeof x);
+    }
+  };
+
+  private static tojsonObject = function(x: any, indent: string, nolint: boolean) {
+    var lineEnding = nolint ? " " : "\n";
+    var tabSpace = nolint ? "" : "\t";
+    indent = indent || "";
+
+    if (typeof x.tojson === "function" && x.tojson !== MongoUtility.tojson) {
+      return x.tojson(indent, nolint);
+    }
+
+    if (x.constructor && typeof x.constructor.tojson === "function" && x.constructor.tojson !== MongoUtility.tojson) {
+      return x.constructor.tojson(x, indent, nolint);
+    }
+
+    if (MongoUtility.hasDefinedProperty(x, "toString") && !$.isArray(x)) {
+      return x.toString();
+    }
+
+    if (x instanceof Error) {
+      return x.toString();
+    }
+
+    if (MongoUtility.isObjectId(x)) {
+      return 'ObjectId("' + x.$oid + '")';
+    }
+
+    // push one level of indent
+    indent += tabSpace;
+    var s = "{";
+
+    var pairs = [];
+    for (var k in x) {
+      if (x.hasOwnProperty(k)) {
+        var val = x[k];
+        var pair = '"' + k + '" : ' + MongoUtility.tojson(val, indent, nolint);
+
+        if (k === "_id") {
+          pairs.unshift(pair);
+        } else {
+          pairs.push(pair);
+        }
+      }
+    }
+    // Add proper line endings, indents, and commas to each line
+    s += $.map(pairs, function(pair) {
+      return lineEnding + indent + pair;
+    }).join(",");
+    s += lineEnding;
+
+    // pop one level of indent
+    indent = indent.substring(1);
+    return s + indent + "}";
+  };
+
+  private static tojsonArray = function(a: any, indent: string, nolint: boolean) {
+    if (a.length === 0) {
+      return "[ ]";
+    }
+
+    var lineEnding = nolint ? " " : "\n";
+    if (!indent || nolint) {
+      indent = "";
+    }
+
+    var s = "[" + lineEnding;
+    indent += "\t";
+    for (var i = 0; i < a.length; i++) {
+      s += indent + MongoUtility.tojson(a[i], indent, nolint);
+      if (i < a.length - 1) {
+        s += "," + lineEnding;
+      }
+    }
+    if (a.length === 0) {
+      s += indent;
+    }
+
+    indent = indent.substring(1);
+    s += lineEnding + indent + "]";
+    return s;
+  };
+
+  private static hasDefinedProperty = function(obj: any, prop: string): boolean {
+    if (Object.getPrototypeOf === undefined || Object.getPrototypeOf(obj) === null) {
+      return false;
+    } else if (obj.hasOwnProperty(prop)) {
+      return true;
+    } else {
+      return MongoUtility.hasDefinedProperty(Object.getPrototypeOf(obj), prop);
+    }
+  };
+
+  private static isObjectId(obj: any): boolean {
+    var keys = Object.keys(obj);
+    return keys.length === 1 && keys[0] === "$oid" && typeof obj.$oid === "string" && /^[0-9a-f]{24}$/.test(obj.$oid);
+  }
+}
--- a/src/Common/NotificationsClientBase.ts
+++ b/src/Common/NotificationsClientBase.ts
@@ -0,0 +1,47 @@
+import "jquery";
+import * as Q from "q";
+import * as DataModels from "../Contracts/DataModels";
+import * as ViewModels from "../Contracts/ViewModels";
+
+import { getAuthorizationHeader } from "../Utils/AuthorizationUtils";
+import { CosmosClient } from "./CosmosClient";
+
+export class NotificationsClientBase implements ViewModels.NotificationsClient {
+  private _extensionEndpoint: string;
+  private _notificationsApiSuffix: string;
+
+  protected constructor(notificationsApiSuffix: string) {
+    this._notificationsApiSuffix = notificationsApiSuffix;
+  }
+
+  public fetchNotifications(): Q.Promise<DataModels.Notification[]> {
+    const deferred: Q.Deferred<DataModels.Notification[]> = Q.defer<DataModels.Notification[]>();
+    const databaseAccount: ViewModels.DatabaseAccount = CosmosClient.databaseAccount();
+    const subscriptionId: string = CosmosClient.subscriptionId();
+    const resourceGroup: string = CosmosClient.resourceGroup();
+    const url: string = `${this._extensionEndpoint}${this._notificationsApiSuffix}?accountName=${databaseAccount.name}&subscriptionId=${subscriptionId}&resourceGroup=${resourceGroup}`;
+    const authorizationHeader: ViewModels.AuthorizationTokenHeaderMetadata = getAuthorizationHeader();
+    const headers: any = {};
+    headers[authorizationHeader.header] = authorizationHeader.token;
+
+    $.ajax({
+      url: url,
+      type: "GET",
+      headers: headers,
+      cache: false
+    }).then(
+      (notifications: DataModels.Notification[], textStatus: string, xhr: JQueryXHR<any>) => {
+        deferred.resolve(notifications);
+      },
+      (xhr: JQueryXHR<any>, textStatus: string, error: any) => {
+        deferred.reject(xhr.responseText);
+      }
+    );
+
+    return deferred.promise;
+  }
+
+  public setExtensionEndpoint(extensionEndpoint: string): void {
+    this._extensionEndpoint = extensionEndpoint;
+  }
+}
--- a/src/Common/ObjectCache.test.ts
+++ b/src/Common/ObjectCache.test.ts
@@ -0,0 +1,33 @@
+import { ObjectCache } from "./ObjectCache";
+
+describe("Object cache", () => {
+  it("should keep size at or below limit", () => {
+    const cache = new ObjectCache<number>(2);
+    cache.set("a", 1);
+    cache.set("b", 2);
+    cache.set("c", 3);
+    cache.set("d", 4);
+    expect(cache.size()).toBe(2);
+  });
+
+  it("should remove first added element to keep size at limit", () => {
+    const cache = new ObjectCache<number>(2);
+    cache.set("a", 1);
+    cache.set("b", 2);
+    cache.set("c", 3);
+    expect(cache.has("a")).toBe(false);
+    expect(cache.has("b")).toBe(true);
+    expect(cache.has("c")).toBe(true);
+  });
+
+  it("should remove first accessed element to keep size at limit", () => {
+    const cache = new ObjectCache<number>(2);
+    cache.set("a", 1);
+    cache.set("b", 2);
+    cache.get("a");
+    cache.set("c", 3);
+    expect(cache.has("a")).toBe(true);
+    expect(cache.has("b")).toBe(false);
+    expect(cache.has("c")).toBe(true);
+  });
+});
--- a/src/Common/ObjectCache.ts
+++ b/src/Common/ObjectCache.ts
@@ -0,0 +1,56 @@
+import { HashMap } from "./HashMap";
+
+export class ObjectCache<T> extends HashMap<T> {
+  private keyQueue: string[]; // Last touched key FIFO to purge cache if too big.
+  private maxNbElements: number;
+
+  public constructor(maxNbElements: number) {
+    super();
+    this.keyQueue = [];
+    this.maxNbElements = maxNbElements;
+    this.clear();
+  }
+
+  public clear(): void {
+    super.clear();
+    this.keyQueue = [];
+  }
+
+  public get(key: string): T {
+    this.markKeyAsTouched(key);
+    return super.get(key);
+  }
+
+  public set(key: string, value: T): void {
+    super.set(key, value);
+
+    this.markKeyAsTouched(key);
+
+    if (super.size() > this.maxNbElements && key !== this.keyQueue[0]) {
+      this.reduceCacheSize();
+    }
+  }
+
+  /**
+   * Invalidate elements to keep the total number below the limit
+   */
+  private reduceCacheSize(): void {
+    // remove a key
+    const oldKey = this.keyQueue.shift();
+    if (oldKey) {
+      super.delete(oldKey);
+    }
+  }
+
+  /**
+   * Bubble up this key as new.
+   * @param key
+   */
+  private markKeyAsTouched(key: string) {
+    const n = this.keyQueue.indexOf(key);
+    if (n > -1) {
+      this.keyQueue.splice(n, 1);
+    }
+    this.keyQueue.push(key);
+  }
+}
--- a/src/Common/QueriesClient.ts
+++ b/src/Common/QueriesClient.ts
@@ -0,0 +1,286 @@
+import * as _ from "underscore";
+import * as DataModels from "../Contracts/DataModels";
+import * as ViewModels from "../Contracts/ViewModels";
+import DocumentId from "../Explorer/Tree/DocumentId";
+import * as ErrorParserUtility from "./ErrorParserUtility";
+import { BackendDefaults, HttpStatusCodes, SavedQueries } from "./Constants";
+import { ConsoleDataType } from "../Explorer/Menus/NotificationConsole/NotificationConsoleComponent";
+import { CosmosClient } from "./CosmosClient";
+import { ItemDefinition, QueryIterator, Resource } from "@azure/cosmos";
+import { Logger } from "./Logger";
+import { NotificationConsoleUtils } from "../Utils/NotificationConsoleUtils";
+import { QueryUtils } from "../Utils/QueryUtils";
+
+export class QueriesClient implements ViewModels.QueriesClient {
+  private static readonly PartitionKey: DataModels.PartitionKey = {
+    paths: [`/${SavedQueries.PartitionKeyProperty}`],
+    kind: BackendDefaults.partitionKeyKind,
+    version: BackendDefaults.partitionKeyVersion
+  };
+  private static readonly FetchQuery: string = "SELECT * FROM c";
+  private static readonly FetchMongoQuery: string = "{}";
+
+  public constructor(private container: ViewModels.Explorer) {}
+
+  public async setupQueriesCollection(): Promise<DataModels.Collection> {
+    const queriesCollection: ViewModels.Collection = this.findQueriesCollection();
+    if (queriesCollection) {
+      return Promise.resolve(queriesCollection.rawDataModel);
+    }
+
+    const id = NotificationConsoleUtils.logConsoleMessage(
+      ConsoleDataType.InProgress,
+      "Setting up account for saving queries"
+    );
+    return this.container.documentClientUtility
+      .getOrCreateDatabaseAndCollection({
+        collectionId: SavedQueries.CollectionName,
+        databaseId: SavedQueries.DatabaseName,
+        partitionKey: QueriesClient.PartitionKey,
+        offerThroughput: SavedQueries.OfferThroughput,
+        databaseLevelThroughput: undefined
+      })
+      .then(
+        (collection: DataModels.Collection) => {
+          NotificationConsoleUtils.logConsoleMessage(
+            ConsoleDataType.Info,
+            "Successfully set up account for saving queries"
+          );
+          return Promise.resolve(collection);
+        },
+        (error: any) => {
+          const stringifiedError: string = JSON.stringify(error);
+          NotificationConsoleUtils.logConsoleMessage(
+            ConsoleDataType.Error,
+            `Failed to set up account for saving queries: ${stringifiedError}`
+          );
+          Logger.logError(stringifiedError, "setupQueriesCollection");
+          return Promise.reject(stringifiedError);
+        }
+      )
+      .finally(() => NotificationConsoleUtils.clearInProgressMessageWithId(id));
+  }
+
+  public async saveQuery(query: DataModels.Query): Promise<void> {
+    const queriesCollection = this.findQueriesCollection();
+    if (!queriesCollection) {
+      const errorMessage: string = "Account not set up to perform saved query operations";
+      NotificationConsoleUtils.logConsoleMessage(
+        ConsoleDataType.Error,
+        `Failed to save query ${query.queryName}: ${errorMessage}`
+      );
+      return Promise.reject(errorMessage);
+    }
+
+    try {
+      this.validateQuery(query);
+    } catch (error) {
+      const errorMessage: string = "Invalid query specified";
+      NotificationConsoleUtils.logConsoleMessage(
+        ConsoleDataType.Error,
+        `Failed to save query ${query.queryName}: ${errorMessage}`
+      );
+      return Promise.reject(errorMessage);
+    }
+
+    const id = NotificationConsoleUtils.logConsoleMessage(
+      ConsoleDataType.InProgress,
+      `Saving query ${query.queryName}`
+    );
+    query.id = query.queryName;
+    return this.container.documentClientUtility
+      .createDocument(queriesCollection, query)
+      .then(
+        (savedQuery: DataModels.Query) => {
+          NotificationConsoleUtils.logConsoleMessage(
+            ConsoleDataType.Info,
+            `Successfully saved query ${query.queryName}`
+          );
+          return Promise.resolve();
+        },
+        (error: any) => {
+          let errorMessage: string;
+          const parsedError: DataModels.ErrorDataModel = ErrorParserUtility.parse(error)[0];
+          if (parsedError.code === HttpStatusCodes.Conflict.toString()) {
+            errorMessage = `Query ${query.queryName} already exists`;
+          } else {
+            errorMessage = parsedError.message;
+          }
+          NotificationConsoleUtils.logConsoleMessage(
+            ConsoleDataType.Error,
+            `Failed to save query ${query.queryName}: ${errorMessage}`
+          );
+          Logger.logError(JSON.stringify(parsedError), "saveQuery");
+          return Promise.reject(errorMessage);
+        }
+      )
+      .finally(() => NotificationConsoleUtils.clearInProgressMessageWithId(id));
+  }
+
+  public async getQueries(): Promise<DataModels.Query[]> {
+    const queriesCollection = this.findQueriesCollection();
+    if (!queriesCollection) {
+      const errorMessage: string = "Account not set up to perform saved query operations";
+      NotificationConsoleUtils.logConsoleMessage(
+        ConsoleDataType.Error,
+        `Failed to fetch saved queries: ${errorMessage}`
+      );
+      return Promise.reject(errorMessage);
+    }
+
+    const options: any = { enableCrossPartitionQuery: true };
+    const id = NotificationConsoleUtils.logConsoleMessage(ConsoleDataType.InProgress, "Fetching saved queries");
+    return this.container.documentClientUtility
+      .queryDocuments(SavedQueries.DatabaseName, SavedQueries.CollectionName, this.fetchQueriesQuery(), options)
+      .then(
+        (queryIterator: QueryIterator<ItemDefinition & Resource>) => {
+          const fetchQueries = (firstItemIndex: number): Q.Promise<ViewModels.QueryResults> =>
+            this.container.documentClientUtility.queryDocumentsPage(
+              queriesCollection.id(),
+              queryIterator,
+              firstItemIndex,
+              options
+            );
+          return QueryUtils.queryAllPages(fetchQueries).then(
+            (results: ViewModels.QueryResults) => {
+              let queries: DataModels.Query[] = _.map(results.documents, (document: DataModels.Query) => {
+                if (!document) {
+                  return undefined;
+                }
+                const { id, resourceId, query, queryName } = document;
+                const parsedQuery: DataModels.Query = {
+                  resourceId: resourceId,
+                  queryName: queryName,
+                  query: query,
+                  id: id
+                };
+                try {
+                  this.validateQuery(parsedQuery);
+                  return parsedQuery;
+                } catch (error) {
+                  return undefined;
+                }
+              });
+              queries = _.reject(queries, (parsedQuery: DataModels.Query) => !parsedQuery);
+              NotificationConsoleUtils.logConsoleMessage(ConsoleDataType.Info, "Successfully fetched saved queries");
+              return Promise.resolve(queries);
+            },
+            (error: any) => {
+              const stringifiedError: string = JSON.stringify(error);
+              NotificationConsoleUtils.logConsoleMessage(
+                ConsoleDataType.Error,
+                `Failed to fetch saved queries: ${stringifiedError}`
+              );
+              Logger.logError(stringifiedError, "getSavedQueries");
+              return Promise.reject(stringifiedError);
+            }
+          );
+        },
+        (error: any) => {
+          // should never get into this state but we handle this regardless
+          const stringifiedError: string = JSON.stringify(error);
+          NotificationConsoleUtils.logConsoleMessage(
+            ConsoleDataType.Error,
+            `Failed to fetch saved queries: ${stringifiedError}`
+          );
+          Logger.logError(stringifiedError, "getSavedQueries");
+          return Promise.reject(stringifiedError);
+        }
+      )
+      .finally(() => NotificationConsoleUtils.clearInProgressMessageWithId(id));
+  }
+
+  public async deleteQuery(query: DataModels.Query): Promise<void> {
+    const queriesCollection = this.findQueriesCollection();
+    if (!queriesCollection) {
+      const errorMessage: string = "Account not set up to perform saved query operations";
+      NotificationConsoleUtils.logConsoleMessage(
+        ConsoleDataType.Error,
+        `Failed to fetch saved queries: ${errorMessage}`
+      );
+      return Promise.reject(errorMessage);
+    }
+
+    try {
+      this.validateQuery(query);
+    } catch (error) {
+      const errorMessage: string = "Invalid query specified";
+      NotificationConsoleUtils.logConsoleMessage(
+        ConsoleDataType.Error,
+        `Failed to delete query ${query.queryName}: ${errorMessage}`
+      );
+    }
+
+    const id = NotificationConsoleUtils.logConsoleMessage(
+      ConsoleDataType.InProgress,
+      `Deleting query ${query.queryName}`
+    );
+    query.id = query.queryName;
+    const documentId: ViewModels.DocumentId = new DocumentId(
+      {
+        partitionKey: QueriesClient.PartitionKey,
+        partitionKeyProperty: "id"
+      } as ViewModels.DocumentsTab,
+      query,
+      query.queryName
+    ); // TODO: Remove DocumentId's dependency on DocumentsTab
+    const options: any = { partitionKey: query.resourceId };
+    return this.container.documentClientUtility
+      .deleteDocument(queriesCollection, documentId)
+      .then(
+        () => {
+          NotificationConsoleUtils.logConsoleMessage(
+            ConsoleDataType.Info,
+            `Successfully deleted query ${query.queryName}`
+          );
+          return Promise.resolve();
+        },
+        (error: any) => {
+          const stringifiedError: string = JSON.stringify(error);
+          NotificationConsoleUtils.logConsoleMessage(
+            ConsoleDataType.Error,
+            `Failed to delete query ${query.queryName}: ${stringifiedError}`
+          );
+          Logger.logError(stringifiedError, "deleteQuery");
+          return Promise.reject(stringifiedError);
+        }
+      )
+      .finally(() => NotificationConsoleUtils.clearInProgressMessageWithId(id));
+  }
+
+  public getResourceId(): string {
+    const databaseAccount: ViewModels.DatabaseAccount = CosmosClient.databaseAccount();
+    const databaseAccountName: string = (databaseAccount && databaseAccount.name) || "";
+    const subscriptionId: string = CosmosClient.subscriptionId() || "";
+    const resourceGroup: string = CosmosClient.resourceGroup() || "";
+
+    return `/subscriptions/${subscriptionId}/resourceGroups/${resourceGroup}/providers/Microsoft.DocumentDb/databaseAccounts/${databaseAccountName}`;
+  }
+
+  private findQueriesCollection(): ViewModels.Collection {
+    const queriesDatabase: ViewModels.Database = _.find(
+      this.container.databases(),
+      (database: ViewModels.Database) => database.id() === SavedQueries.DatabaseName
+    );
+    if (!queriesDatabase) {
+      return undefined;
+    }
+    return _.find(
+      queriesDatabase.collections(),
+      (collection: ViewModels.Collection) => collection.id() === SavedQueries.CollectionName
+    );
+  }
+
+  private validateQuery(query: DataModels.Query): void {
+    if (!query || query.queryName == null || query.query == null || query.resourceId == null) {
+      throw new Error("Invalid query specified");
+    }
+  }
+
+  private fetchQueriesQuery(): string {
+    if (this.container.isPreferredApiMongoDB()) {
+      return QueriesClient.FetchMongoQuery;
+    }
+    return QueriesClient.FetchQuery;
+  }
+}
--- a/src/Common/Splitter.ts
+++ b/src/Common/Splitter.ts
@@ -0,0 +1,108 @@
+import * as ko from "knockout";
+
+import { SplitterMetrics } from "./Constants";
+
+export enum SplitterDirection {
+  Horizontal = "horizontal",
+  Vertical = "vertical"
+}
+
+export interface SplitterBounds {
+  max: number;
+  min: number;
+}
+
+export interface SplitterOptions {
+  splitterId: string;
+  leftId: string;
+  bounds: SplitterBounds;
+  direction: SplitterDirection;
+}
+
+export class Splitter {
+  public splitterId: string;
+  public leftSideId: string;
+
+  public splitter: HTMLElement;
+  public leftSide: HTMLElement;
+  public lastX: number;
+  public lastWidth: number;
+
+  private isCollapsed: ko.Observable<boolean>;
+  private bounds: SplitterBounds;
+  private direction: SplitterDirection;
+
+  constructor(options: SplitterOptions) {
+    this.splitterId = options.splitterId;
+    this.leftSideId = options.leftId;
+    this.isCollapsed = ko.observable<boolean>(false);
+    this.bounds = options.bounds;
+    this.direction = options.direction;
+    this.initialize();
+  }
+
+  public initialize() {
+    this.splitter = document.getElementById(this.splitterId);
+    this.leftSide = document.getElementById(this.leftSideId);
+
+    const isVerticalSplitter: boolean = this.direction === SplitterDirection.Vertical;
+    const splitterOptions: JQueryUI.ResizableOptions = {
+      animate: true,
+      animateDuration: "fast",
+      start: this.onResizeStart,
+      stop: this.onResizeStop
+    };
+
+    if (isVerticalSplitter) {
+      $(this.leftSide).css("width", this.bounds.min);
+      $(this.splitter).css("height", "100%");
+
+      splitterOptions.maxWidth = this.bounds.max;
+      splitterOptions.minWidth = this.bounds.min;
+      splitterOptions.handles = { e: "#" + this.splitterId };
+    } else {
+      $(this.leftSide).css("height", this.bounds.min);
+      $(this.splitter).css("width", "100%");
+
+      splitterOptions.maxHeight = this.bounds.max;
+      splitterOptions.minHeight = this.bounds.min;
+      splitterOptions.handles = { s: "#" + this.splitterId };
+    }
+
+    $(this.leftSide).resizable(splitterOptions);
+  }
+
+  private onResizeStart: JQueryUI.ResizableEvent = (e: Event, ui: JQueryUI.ResizableUIParams) => {
+    if (this.direction === SplitterDirection.Vertical) {
+      $(".ui-resizable-helper").height("100%");
+    } else {
+      $(".ui-resizable-helper").width("100%");
+    }
+    $("iframe").css("pointer-events", "none");
+  };
+
+  private onResizeStop: JQueryUI.ResizableEvent = (e: Event, ui: JQueryUI.ResizableUIParams) => {
+    $("iframe").css("pointer-events", "auto");
+  };
+
+  public collapseLeft() {
+    this.lastX = $(this.splitter).position().left;
+    this.lastWidth = $(this.leftSide).width();
+    $(this.splitter).css("left", SplitterMetrics.CollapsedPositionLeft);
+    $(this.leftSide).css("width", "");
+    $(this.leftSide)
+      .resizable("option", "disabled", true)
+      .removeClass("ui-resizable-disabled"); // remove class so splitter is visible
+    $(this.splitter).removeClass("ui-resizable-e");
+    this.isCollapsed(true);
+  }
+
+  public expandLeft() {
+    $(this.splitter).addClass("ui-resizable-e");
+    $(this.leftSide).css("width", this.lastWidth);
+    $(this.splitter).css("left", this.lastX);
+    $(this.splitter).css("left", ""); // this ensures the splitter's position is not fixed and enables movement during resizing
+    $(this.leftSide).resizable("enable");
+    this.isCollapsed(false);
+  }
+}
--- a/src/Common/ThemeUtility.ts
+++ b/src/Common/ThemeUtility.ts
@@ -0,0 +1,19 @@
+/*!---------------------------------------------------------
+ * Copyright (C) Microsoft Corporation. All rights reserved.
+ *----------------------------------------------------------*/
+
+export default class ThemeUtility {
+  public static getMonacoTheme(theme: string): string {
+    switch (theme) {
+      case "default":
+      case "hc-white":
+        return "vs";
+      case "dark":
+        return "vs-dark";
+      case "hc-black":
+        return "hc-black";
+      default:
+        return "vs";
+    }
+  }
+}
--- a/src/Common/UrlUtility.ts
+++ b/src/Common/UrlUtility.ts
@@ -0,0 +1,55 @@
+export default class UrlUtility {
+  public static parseDocumentsPath(resourcePath: string): any {
+    if (typeof resourcePath !== "string") {
+      return {};
+    }
+
+    if (resourcePath.length === 0) {
+      return {};
+    }
+
+    if (resourcePath[resourcePath.length - 1] !== "/") {
+      resourcePath = resourcePath + "/";
+    }
+
+    if (resourcePath[0] !== "/") {
+      resourcePath = "/" + resourcePath;
+    }
+
+    var id: string;
+    var type: string;
+    var pathParts = resourcePath.split("/");
+
+    if (pathParts.length % 2 === 0) {
+      id = pathParts[pathParts.length - 2];
+      type = pathParts[pathParts.length - 3];
+    } else {
+      id = pathParts[pathParts.length - 3];
+      type = pathParts[pathParts.length - 2];
+    }
+
+    var result = {
+      type: type,
+      objectBody: {
+        id: id,
+        self: resourcePath
+      }
+    };
+
+    return result;
+  }
+
+  public static createUri(baseUri: string, relativeUri: string): string {
+    if (!baseUri) {
+      throw new Error("baseUri is null or empty");
+    }
+
+    var slashAtEndOfUriRegex = /\/$/,
+      slashAtStartOfUriRegEx = /^\//;
+
+    var normalizedBaseUri = baseUri.replace(slashAtEndOfUriRegex, "") + "/",
+      normalizedRelativeUri = (relativeUri && relativeUri.replace(slashAtStartOfUriRegEx, "")) || "";
+
+    return normalizedBaseUri + normalizedRelativeUri;
+  }
+}
--- a/src/Common/snapshots/CosmosClient.test.ts.snap
+++ b/src/Common/snapshots/CosmosClient.test.ts.snap
@@ -0,0 +1,21 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`requestPlugin Emulator builds a url for emulator proxy via webpack 1`] = `
+Object {
+  "endpoint": "/proxy",
+  "headers": Object {
+    "x-ms-proxy-target": "http://localhost",
+  },
+  "path": "/dbs/foo",
+}
+`;
+
+exports[`requestPlugin Hosted builds a proxy URL in development 1`] = `
+Object {
+  "endpoint": "/proxy",
+  "headers": Object {
+    "x-ms-proxy-target": "baz",
+  },
+  "path": "/dbs/foo",
+}
+`;
--- a/src/Common/snapshots/DataAccessUtilityBase.test.ts.snap
+++ b/src/Common/snapshots/DataAccessUtilityBase.test.ts.snap
@@ -0,0 +1,21 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`getCommonQueryOptions builds the correct default options objects 1`] = `
+Object {
+  "enableScanInQuery": true,
+  "forceQueryPlan": true,
+  "maxDegreeOfParallelism": 0,
+  "maxItemCount": 100,
+  "populateQueryMetrics": true,
+}
+`;
+
+exports[`getCommonQueryOptions reads from localStorage 1`] = `
+Object {
+  "enableScanInQuery": true,
+  "forceQueryPlan": true,
+  "maxDegreeOfParallelism": 17,
+  "maxItemCount": 37,
+  "populateQueryMetrics": true,
+}
+`;
--- a/src/Common/snapshots/IteratorUtilities.test.ts.snap
+++ b/src/Common/snapshots/IteratorUtilities.test.ts.snap
@@ -0,0 +1,14 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`nextPage returns results for the next page 1`] = `
+Object {
+  "activityId": "foo",
+  "documents": Array [],
+  "firstItemIndex": 11,
+  "hasMoreResults": false,
+  "headers": Object {},
+  "itemCount": 0,
+  "lastItemIndex": 10,
+  "requestCharge": 1,
+}
+`;