Lazy load collection offer (#234)

src/Common/dataAccess/readCollectionQuotaInfo.ts

@@ -0,0 +1,48 @@
+import * as DataModels from "../../Contracts/DataModels";
+import * as HeadersUtility from "../HeadersUtility";
+import * as ViewModels from "../../Contracts/ViewModels";
+import { ContainerDefinition, Resource } from "@azure/cosmos";
+import { HttpHeaders } from "../Constants";
+import { RequestOptions } from "@azure/cosmos/dist-esm";
+import { client } from "../CosmosClient";
+import { logConsoleProgress, logConsoleError } from "../../Utils/NotificationConsoleUtils";
+import { logError } from "../Logger";
+import { sendNotificationForError } from "./sendNotificationForError";
+
+interface ResourceWithStatistics {
+  statistics: DataModels.Statistic[];
+}
+
+export const readCollectionQuotaInfo = async (
+  collection: ViewModels.Collection
+): Promise<DataModels.CollectionQuotaInfo> => {
+  const clearMessage = logConsoleProgress(`Querying containers for database ${collection.id}`);
+  const options: RequestOptions = {};
+  options.populateQuotaInfo = true;
+  options.initialHeaders = options.initialHeaders || {};
+  options.initialHeaders[HttpHeaders.populatePartitionStatistics] = true;
+
+  try {
+    const response = await client()
+      .database(collection.databaseId)
+      .container(collection.id())
+      .read(options);
+    const quota: DataModels.CollectionQuotaInfo = HeadersUtility.getQuota(response.headers);
+    const resource = response.resource as ContainerDefinition & Resource & ResourceWithStatistics;
+    quota["usageSizeInKB"] = resource.statistics.reduce(
+      (previousValue: number, currentValue: DataModels.Statistic) => previousValue + currentValue.sizeInKB,
+      0
+    );
+    quota["numPartitions"] = resource.statistics.length;
+    quota["uniqueKeyPolicy"] = collection.uniqueKeyPolicy; // TODO: Remove after refactoring (#119617)
+
+    return quota;
+  } catch (error) {
+    logConsoleError(`Error while querying quota info for container ${collection.id}:\n ${JSON.stringify(error)}`);
+    logError(JSON.stringify(error), "ReadCollectionQuotaInfo", error.code);
+    sendNotificationForError(error);
+    throw error;
+  } finally {
+    clearMessage();
+  }
+};