Support patch operations 'set' and 'incr' #7

.github/workflows/compile-shared-libraries.yml

@@ -0,0 +1,30 @@
+name: Cross-Compile Shared Libraries
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Cross-Compile with xgo
+        uses: crazy-max/ghaction-xgo@v3.1.0
+        with:
+          xgo_version: latest
+          go_version: 1.22.0
+          dest: dist
+          pkg: sharedlibrary
+          prefix: cosmium
+          targets: linux/amd64,linux/arm64,windows/amd64,windows/arm64,darwin/amd64,darwin/arm64
+          v: true
+          buildmode: c-shared
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: shared-libraries
+          path: dist/*

Makefile

@@ -8,9 +8,17 @@ SERVER_LOCATION=./cmd/server
 
 SHARED_LIB_LOCATION=./sharedlibrary
 SHARED_LIB_OPT=-buildmode=c-shared
+XGO_TARGETS=linux/amd64,linux/arm64,windows/amd64,windows/arm64,darwin/amd64,darwin/arm64
+GOVERSION=1.22.0
 
 DIST_DIR=dist
 
+SHARED_LIB_TEST_CC=gcc
+SHARED_LIB_TEST_CFLAGS=-Wall -ldl
+SHARED_LIB_TEST_TARGET=$(DIST_DIR)/sharedlibrary_test
+SHARED_LIB_TEST_DIR=./sharedlibrary/tests
+SHARED_LIB_TEST_SOURCES=$(wildcard $(SHARED_LIB_TEST_DIR)/*.c)
+
 all: test build-all
 
 build-all: build-darwin-arm64 build-darwin-amd64 build-linux-amd64 build-linux-arm64 build-windows-amd64 build-windows-arm64
@@ -43,6 +51,19 @@ build-sharedlib-linux-amd64:
 	@echo "Building shared library for Linux x64..."
 	@GOOS=linux GOARCH=amd64 $(GOBUILD) $(SHARED_LIB_OPT) -o $(DIST_DIR)/$(BINARY_NAME)-linux-amd64.so $(SHARED_LIB_LOCATION)
 
+build-sharedlib-tests: build-sharedlib-linux-amd64
+	@echo "Building shared library tests..."
+	@$(SHARED_LIB_TEST_CC) $(SHARED_LIB_TEST_CFLAGS) -o $(SHARED_LIB_TEST_TARGET) $(SHARED_LIB_TEST_SOURCES)
+
+run-sharedlib-tests: build-sharedlib-tests
+	@echo "Running shared library tests..."
+	@$(SHARED_LIB_TEST_TARGET) $(DIST_DIR)/$(BINARY_NAME)-linux-amd64.so
+
+xgo-compile-sharedlib:
+	@echo "Building shared libraries using xgo..."
+	@mkdir -p $(DIST_DIR)
+	@xgo -targets=$(XGO_TARGETS) -go $(GOVERSION) -buildmode=c-shared -dest=$(DIST_DIR) -out=$(BINARY_NAME) -pkg=$(SHARED_LIB_LOCATION) .
+
 generate-parser-nosql:
 	pigeon -o ./parsers/nosql/nosql.go ./parsers/nosql/nosql.peg
 

api/api_server.go

@@ -0,0 +1,35 @@
+package api
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/pikami/cosmium/api/config"
+	"github.com/pikami/cosmium/internal/repositories"
+)
+
+type ApiServer struct {
+	stopServer chan interface{}
+	isActive   bool
+	router     *gin.Engine
+	config     config.ServerConfig
+}
+
+func NewApiServer(dataRepository *repositories.DataRepository, config config.ServerConfig) *ApiServer {
+	stopChan := make(chan interface{})
+
+	apiServer := &ApiServer{
+		stopServer: stopChan,
+		config:     config,
+	}
+
+	apiServer.CreateRouter(dataRepository)
+
+	return apiServer
+}
+
+func (s *ApiServer) GetRouter() *gin.Engine {
+	return s.router
+}
+
+func (s *ApiServer) Stop() {
+	s.stopServer <- true
+}

api/config/config.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"os"
 	"strings"
+
+	"github.com/pikami/cosmium/internal/logger"
 )
 
 const (
@@ -13,9 +15,7 @@ const (
 	ExplorerBaseUrlLocation = "/_explorer"
 )
 
-var Config = ServerConfig{}
+func ParseFlags() ServerConfig {
-
-func ParseFlags() {
 	host := flag.String("Host", "localhost", "Hostname")
 	port := flag.Int("Port", 8081, "Listen port")
 	explorerPath := flag.String("ExplorerDir", "", "Path to cosmos-explorer files")
@@ -31,22 +31,42 @@ func ParseFlags() {
 	flag.Parse()
 	setFlagsFromEnvironment()
 
-	Config.Host = *host
+	config := ServerConfig{}
-	Config.Port = *port
+	config.Host = *host
-	Config.ExplorerPath = *explorerPath
+	config.Port = *port
-	Config.TLS_CertificatePath = *tlsCertificatePath
+	config.ExplorerPath = *explorerPath
-	Config.TLS_CertificateKey = *tlsCertificateKey
+	config.TLS_CertificatePath = *tlsCertificatePath
-	Config.InitialDataFilePath = *initialDataPath
+	config.TLS_CertificateKey = *tlsCertificateKey
-	Config.PersistDataFilePath = *persistDataPath
+	config.InitialDataFilePath = *initialDataPath
-	Config.DisableAuth = *disableAuthentication
+	config.PersistDataFilePath = *persistDataPath
-	Config.DisableTls = *disableTls
+	config.DisableAuth = *disableAuthentication
-	Config.Debug = *debug
+	config.DisableTls = *disableTls
+	config.Debug = *debug
+	config.AccountKey = *accountKey
 
-	Config.DatabaseAccount = Config.Host
+	config.PopulateCalculatedFields()
-	Config.DatabaseDomain = Config.Host
+
-	Config.DatabaseEndpoint = fmt.Sprintf("https://%s:%d/", Config.Host, Config.Port)
+	return config
-	Config.AccountKey = *accountKey
+}
-	Config.ExplorerBaseUrlLocation = ExplorerBaseUrlLocation
+
+func (c *ServerConfig) PopulateCalculatedFields() {
+	c.DatabaseAccount = c.Host
+	c.DatabaseDomain = c.Host
+	c.DatabaseEndpoint = fmt.Sprintf("https://%s:%d/", c.Host, c.Port)
+	c.ExplorerBaseUrlLocation = ExplorerBaseUrlLocation
+	logger.EnableDebugOutput = c.Debug
+}
+
+func (c *ServerConfig) ApplyDefaultsToEmptyFields() {
+	if c.Host == "" {
+		c.Host = "localhost"
+	}
+	if c.Port == 0 {
+		c.Port = 8081
+	}
+	if c.AccountKey == "" {
+		c.AccountKey = DefaultAccountKey
+	}
 }
 
 func setFlagsFromEnvironment() (err error) {

api/config/models.go

@@ -1,20 +1,20 @@
 package config
 
 type ServerConfig struct {
-	DatabaseAccount  string
+	DatabaseAccount  string `json:"databaseAccount"`
-	DatabaseDomain   string
+	DatabaseDomain   string `json:"databaseDomain"`
-	DatabaseEndpoint string
+	DatabaseEndpoint string `json:"databaseEndpoint"`
-	AccountKey       string
+	AccountKey       string `json:"accountKey"`
 
-	ExplorerPath            string
+	ExplorerPath            string `json:"explorerPath"`
-	Port                    int
+	Port                    int    `json:"port"`
-	Host                    string
+	Host                    string `json:"host"`
-	TLS_CertificatePath     string
+	TLS_CertificatePath     string `json:"tlsCertificatePath"`
-	TLS_CertificateKey      string
+	TLS_CertificateKey      string `json:"tlsCertificateKey"`
-	InitialDataFilePath     string
+	InitialDataFilePath     string `json:"initialDataFilePath"`
-	PersistDataFilePath     string
+	PersistDataFilePath     string `json:"persistDataFilePath"`
-	DisableAuth             bool
+	DisableAuth             bool   `json:"disableAuth"`
-	DisableTls              bool
+	DisableTls              bool   `json:"disableTls"`
-	Debug                   bool
+	Debug                   bool   `json:"debug"`
-	ExplorerBaseUrlLocation string
+	ExplorerBaseUrlLocation string `json:"explorerBaseUrlLocation"`
 }

api/handlers/collections.go

@@ -5,16 +5,15 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-func GetAllCollections(c *gin.Context) {
+func (h *Handlers) GetAllCollections(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 
-	collections, status := repositories.GetAllCollections(databaseId)
+	collections, status := h.repository.GetAllCollections(databaseId)
 	if status == repositorymodels.StatusOk {
-		database, _ := repositories.GetDatabase(databaseId)
+		database, _ := h.repository.GetDatabase(databaseId)
 
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(collections)))
 		c.IndentedJSON(http.StatusOK, gin.H{
@@ -28,11 +27,11 @@ func GetAllCollections(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func GetCollection(c *gin.Context) {
+func (h *Handlers) GetCollection(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	id := c.Param("collId")
 
-	collection, status := repositories.GetCollection(databaseId, id)
+	collection, status := h.repository.GetCollection(databaseId, id)
 	if status == repositorymodels.StatusOk {
 		c.IndentedJSON(http.StatusOK, collection)
 		return
@@ -46,11 +45,11 @@ func GetCollection(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func DeleteCollection(c *gin.Context) {
+func (h *Handlers) DeleteCollection(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	id := c.Param("collId")
 
-	status := repositories.DeleteCollection(databaseId, id)
+	status := h.repository.DeleteCollection(databaseId, id)
 	if status == repositorymodels.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
@@ -64,7 +63,7 @@ func DeleteCollection(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func CreateCollection(c *gin.Context) {
+func (h *Handlers) CreateCollection(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	var newCollection repositorymodels.Collection
 
@@ -78,7 +77,7 @@ func CreateCollection(c *gin.Context) {
 		return
 	}
 
-	createdCollection, status := repositories.CreateCollection(databaseId, newCollection)
+	createdCollection, status := h.repository.CreateCollection(databaseId, newCollection)
 	if status == repositorymodels.Conflict {
 		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
 		return

api/handlers/cosmium.go

@@ -4,11 +4,10 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/internal/repositories"
 )
 
-func CosmiumExport(c *gin.Context) {
+func (h *Handlers) CosmiumExport(c *gin.Context) {
-	repositoryState, err := repositories.GetState()
+	repositoryState, err := h.repository.GetState()
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return

api/handlers/databases.go

@@ -5,12 +5,11 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-func GetAllDatabases(c *gin.Context) {
+func (h *Handlers) GetAllDatabases(c *gin.Context) {
-	databases, status := repositories.GetAllDatabases()
+	databases, status := h.repository.GetAllDatabases()
 	if status == repositorymodels.StatusOk {
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(databases)))
 		c.IndentedJSON(http.StatusOK, gin.H{
@@ -24,10 +23,10 @@ func GetAllDatabases(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func GetDatabase(c *gin.Context) {
+func (h *Handlers) GetDatabase(c *gin.Context) {
 	id := c.Param("databaseId")
 
-	database, status := repositories.GetDatabase(id)
+	database, status := h.repository.GetDatabase(id)
 	if status == repositorymodels.StatusOk {
 		c.IndentedJSON(http.StatusOK, database)
 		return
@@ -41,10 +40,10 @@ func GetDatabase(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func DeleteDatabase(c *gin.Context) {
+func (h *Handlers) DeleteDatabase(c *gin.Context) {
 	id := c.Param("databaseId")
 
-	status := repositories.DeleteDatabase(id)
+	status := h.repository.DeleteDatabase(id)
 	if status == repositorymodels.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
@@ -58,7 +57,7 @@ func DeleteDatabase(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func CreateDatabase(c *gin.Context) {
+func (h *Handlers) CreateDatabase(c *gin.Context) {
 	var newDatabase repositorymodels.Database
 
 	if err := c.BindJSON(&newDatabase); err != nil {
@@ -71,7 +70,7 @@ func CreateDatabase(c *gin.Context) {
 		return
 	}
 
-	createdDatabase, status := repositories.CreateDatabase(newDatabase)
+	createdDatabase, status := h.repository.CreateDatabase(newDatabase)
 	if status == repositorymodels.Conflict {
 		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
 		return

api/handlers/documents.go

@@ -6,21 +6,20 @@ import (
 	"net/http"
 	"strconv"
 
-	jsonpatch "github.com/evanphx/json-patch/v5"
 	"github.com/gin-gonic/gin"
 	"github.com/pikami/cosmium/internal/constants"
 	"github.com/pikami/cosmium/internal/logger"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	jsonpatch "github.com/pikami/json-patch/v5"
 )
 
-func GetAllDocuments(c *gin.Context) {
+func (h *Handlers) GetAllDocuments(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	documents, status := repositories.GetAllDocuments(databaseId, collectionId)
+	documents, status := h.repository.GetAllDocuments(databaseId, collectionId)
 	if status == repositorymodels.StatusOk {
-		collection, _ := repositories.GetCollection(databaseId, collectionId)
+		collection, _ := h.repository.GetCollection(databaseId, collectionId)
 
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(documents)))
 		c.IndentedJSON(http.StatusOK, gin.H{
@@ -34,12 +33,12 @@ func GetAllDocuments(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func GetDocument(c *gin.Context) {
+func (h *Handlers) GetDocument(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 	documentId := c.Param("docId")
 
-	document, status := repositories.GetDocument(databaseId, collectionId, documentId)
+	document, status := h.repository.GetDocument(databaseId, collectionId, documentId)
 	if status == repositorymodels.StatusOk {
 		c.IndentedJSON(http.StatusOK, document)
 		return
@@ -53,12 +52,12 @@ func GetDocument(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func DeleteDocument(c *gin.Context) {
+func (h *Handlers) DeleteDocument(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 	documentId := c.Param("docId")
 
-	status := repositories.DeleteDocument(databaseId, collectionId, documentId)
+	status := h.repository.DeleteDocument(databaseId, collectionId, documentId)
 	if status == repositorymodels.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
@@ -73,7 +72,7 @@ func DeleteDocument(c *gin.Context) {
 }
 
 // TODO: Maybe move "replace" logic to repository
-func ReplaceDocument(c *gin.Context) {
+func (h *Handlers) ReplaceDocument(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 	documentId := c.Param("docId")
@@ -84,13 +83,13 @@ func ReplaceDocument(c *gin.Context) {
 		return
 	}
 
-	status := repositories.DeleteDocument(databaseId, collectionId, documentId)
+	status := h.repository.DeleteDocument(databaseId, collectionId, documentId)
 	if status == repositorymodels.StatusNotFound {
 		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
 		return
 	}
 
-	createdDocument, status := repositories.CreateDocument(databaseId, collectionId, requestBody)
+	createdDocument, status := h.repository.CreateDocument(databaseId, collectionId, requestBody)
 	if status == repositorymodels.Conflict {
 		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
 		return
@@ -104,12 +103,12 @@ func ReplaceDocument(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func PatchDocument(c *gin.Context) {
+func (h *Handlers) PatchDocument(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 	documentId := c.Param("docId")
 
-	document, status := repositories.GetDocument(databaseId, collectionId, documentId)
+	document, status := h.repository.GetDocument(databaseId, collectionId, documentId)
 	if status == repositorymodels.StatusNotFound {
 		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
 		return
@@ -160,13 +159,13 @@ func PatchDocument(c *gin.Context) {
 		return
 	}
 
-	status = repositories.DeleteDocument(databaseId, collectionId, documentId)
+	status = h.repository.DeleteDocument(databaseId, collectionId, documentId)
 	if status == repositorymodels.StatusNotFound {
 		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
 		return
 	}
 
-	createdDocument, status := repositories.CreateDocument(databaseId, collectionId, modifiedDocument)
+	createdDocument, status := h.repository.CreateDocument(databaseId, collectionId, modifiedDocument)
 	if status == repositorymodels.Conflict {
 		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
 		return
@@ -180,7 +179,7 @@ func PatchDocument(c *gin.Context) {
 	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
 }
 
-func DocumentsPost(c *gin.Context) {
+func (h *Handlers) DocumentsPost(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
@@ -202,14 +201,14 @@ func DocumentsPost(c *gin.Context) {
 			queryParameters = parametersToMap(paramsArray)
 		}
 
-		docs, status := repositories.ExecuteQueryDocuments(databaseId, collectionId, query.(string), queryParameters)
+		docs, status := h.repository.ExecuteQueryDocuments(databaseId, collectionId, query.(string), queryParameters)
 		if status != repositorymodels.StatusOk {
 			// TODO: Currently we return everything if the query fails
-			GetAllDocuments(c)
+			h.GetAllDocuments(c)
 			return
 		}
 
-		collection, _ := repositories.GetCollection(databaseId, collectionId)
+		collection, _ := h.repository.GetCollection(databaseId, collectionId)
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(docs)))
 		c.IndentedJSON(http.StatusOK, gin.H{
 			"_rid":      collection.ResourceID,
@@ -226,10 +225,10 @@ func DocumentsPost(c *gin.Context) {
 
 	isUpsert, _ := strconv.ParseBool(c.GetHeader("x-ms-documentdb-is-upsert"))
 	if isUpsert {
-		repositories.DeleteDocument(databaseId, collectionId, requestBody["id"].(string))
+		h.repository.DeleteDocument(databaseId, collectionId, requestBody["id"].(string))
 	}
 
-	createdDocument, status := repositories.CreateDocument(databaseId, collectionId, requestBody)
+	createdDocument, status := h.repository.CreateDocument(databaseId, collectionId, requestBody)
 	if status == repositorymodels.Conflict {
 		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
 		return

api/handlers/explorer.go

@@ -4,15 +4,14 @@ import (
 	"fmt"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/api/config"
 )
 
-func RegisterExplorerHandlers(router *gin.Engine) {
+func (h *Handlers) RegisterExplorerHandlers(router *gin.Engine) {
-	explorer := router.Group(config.Config.ExplorerBaseUrlLocation)
+	explorer := router.Group(h.config.ExplorerBaseUrlLocation)
 	{
 		explorer.Use(func(ctx *gin.Context) {
 			if ctx.Param("filepath") == "/config.json" {
-				endpoint := fmt.Sprintf("https://%s:%d", config.Config.Host, config.Config.Port)
+				endpoint := fmt.Sprintf("https://%s:%d", h.config.Host, h.config.Port)
 				ctx.JSON(200, gin.H{
 					"BACKEND_ENDPOINT":       endpoint,
 					"MONGO_BACKEND_ENDPOINT": endpoint,
@@ -25,8 +24,8 @@ func RegisterExplorerHandlers(router *gin.Engine) {
 			}
 		})
 
-		if config.Config.ExplorerPath != "" {
+		if h.config.ExplorerPath != "" {
-			explorer.Static("/", config.Config.ExplorerPath)
+			explorer.Static("/", h.config.ExplorerPath)
 		}
 	}
 }

api/handlers/handlers.go

@@ -0,0 +1,18 @@
+package handlers
+
+import (
+	"github.com/pikami/cosmium/api/config"
+	"github.com/pikami/cosmium/internal/repositories"
+)
+
+type Handlers struct {
+	repository *repositories.DataRepository
+	config     config.ServerConfig
+}
+
+func NewHandlers(dataRepository *repositories.DataRepository, config config.ServerConfig) *Handlers {
+	return &Handlers{
+		repository: dataRepository,
+		config:     config,
+	}
+}

api/handlers/middleware/authentication.go

@@ -10,11 +10,11 @@ import (
 	"github.com/pikami/cosmium/internal/logger"
 )
 
-func Authentication() gin.HandlerFunc {
+func Authentication(config config.ServerConfig) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		requestUrl := c.Request.URL.String()
-		if config.Config.DisableAuth ||
+		if config.DisableAuth ||
-			strings.HasPrefix(requestUrl, config.Config.ExplorerBaseUrlLocation) ||
+			strings.HasPrefix(requestUrl, config.ExplorerBaseUrlLocation) ||
 			strings.HasPrefix(requestUrl, "/cosmium") {
 			return
 		}
@@ -25,7 +25,7 @@ func Authentication() gin.HandlerFunc {
 		authHeader := c.Request.Header.Get("authorization")
 		date := c.Request.Header.Get("x-ms-date")
 		expectedSignature := authentication.GenerateSignature(
-			c.Request.Method, resourceType, resourceId, date, config.Config.AccountKey)
+			c.Request.Method, resourceType, resourceId, date, config.AccountKey)
 
 		decoded, _ := url.QueryUnescape(authHeader)
 		params, _ := url.ParseQuery(decoded)

api/handlers/middleware/strip_trailing_slashes.go

@@ -7,10 +7,10 @@ import (
 	"github.com/pikami/cosmium/api/config"
 )
 
-func StripTrailingSlashes(r *gin.Engine) gin.HandlerFunc {
+func StripTrailingSlashes(r *gin.Engine, config config.ServerConfig) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		path := c.Request.URL.Path
-		if len(path) > 1 && path[len(path)-1] == '/' && !strings.Contains(path, config.Config.ExplorerBaseUrlLocation) {
+		if len(path) > 1 && path[len(path)-1] == '/' && !strings.Contains(path, config.ExplorerBaseUrlLocation) {
 			c.Request.URL.Path = path[:len(path)-1]
 			r.HandleContext(c)
 			c.Abort()

api/handlers/partition_key_ranges.go

@@ -5,11 +5,10 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-func GetPartitionKeyRanges(c *gin.Context) {
+func (h *Handlers) GetPartitionKeyRanges(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
@@ -18,7 +17,7 @@ func GetPartitionKeyRanges(c *gin.Context) {
 		return
 	}
 
-	partitionKeyRanges, status := repositories.GetPartitionKeyRanges(databaseId, collectionId)
+	partitionKeyRanges, status := h.repository.GetPartitionKeyRanges(databaseId, collectionId)
 	if status == repositorymodels.StatusOk {
 		c.Header("etag", "\"420\"")
 		c.Header("lsn", "420")
@@ -27,7 +26,7 @@ func GetPartitionKeyRanges(c *gin.Context) {
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(partitionKeyRanges)))
 
 		collectionRid := collectionId
-		collection, _ := repositories.GetCollection(databaseId, collectionId)
+		collection, _ := h.repository.GetCollection(databaseId, collectionId)
 		if collection.ResourceID != "" {
 			collectionRid = collection.ResourceID
 		}

api/handlers/server_info.go

@@ -5,27 +5,26 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/api/config"
 )
 
-func GetServerInfo(c *gin.Context) {
+func (h *Handlers) GetServerInfo(c *gin.Context) {
 	c.IndentedJSON(http.StatusOK, gin.H{
 		"_self":     "",
-		"id":        config.Config.DatabaseAccount,
+		"id":        h.config.DatabaseAccount,
-		"_rid":      fmt.Sprintf("%s.%s", config.Config.DatabaseAccount, config.Config.DatabaseDomain),
+		"_rid":      fmt.Sprintf("%s.%s", h.config.DatabaseAccount, h.config.DatabaseDomain),
 		"media":     "//media/",
 		"addresses": "//addresses/",
 		"_dbs":      "//dbs/",
 		"writableLocations": []map[string]interface{}{
 			{
 				"name":                    "South Central US",
-				"databaseAccountEndpoint": config.Config.DatabaseEndpoint,
+				"databaseAccountEndpoint": h.config.DatabaseEndpoint,
 			},
 		},
 		"readableLocations": []map[string]interface{}{
 			{
 				"name":                    "South Central US",
-				"databaseAccountEndpoint": config.Config.DatabaseEndpoint,
+				"databaseAccountEndpoint": h.config.DatabaseEndpoint,
 			},
 		},
 		"enableMultipleWriteLocations": false,

api/handlers/stored_procedures.go

@@ -5,15 +5,14 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-func GetAllStoredProcedures(c *gin.Context) {
+func (h *Handlers) GetAllStoredProcedures(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	sps, status := repositories.GetAllStoredProcedures(databaseId, collectionId)
+	sps, status := h.repository.GetAllStoredProcedures(databaseId, collectionId)
 
 	if status == repositorymodels.StatusOk {
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(sps)))

api/handlers/triggers.go

@@ -5,15 +5,14 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-func GetAllTriggers(c *gin.Context) {
+func (h *Handlers) GetAllTriggers(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	triggers, status := repositories.GetAllTriggers(databaseId, collectionId)
+	triggers, status := h.repository.GetAllTriggers(databaseId, collectionId)
 
 	if status == repositorymodels.StatusOk {
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(triggers)))

api/handlers/user_defined_functions.go

@@ -5,15 +5,14 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-func GetAllUserDefinedFunctions(c *gin.Context) {
+func (h *Handlers) GetAllUserDefinedFunctions(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	udfs, status := repositories.GetAllUserDefinedFunctions(databaseId, collectionId)
+	udfs, status := h.repository.GetAllUserDefinedFunctions(databaseId, collectionId)
 
 	if status == repositorymodels.StatusOk {
 		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(udfs)))

api/router.go

@@ -6,78 +6,75 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	"github.com/pikami/cosmium/api/config"
 	"github.com/pikami/cosmium/api/handlers"
 	"github.com/pikami/cosmium/api/handlers/middleware"
 	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/repositories"
 	tlsprovider "github.com/pikami/cosmium/internal/tls_provider"
 )
 
-type Server struct {
+func (s *ApiServer) CreateRouter(repository *repositories.DataRepository) {
-	StopServer chan interface{}
+	routeHandlers := handlers.NewHandlers(repository, s.config)
-}
+
+	if !s.config.Debug {
+		gin.SetMode(gin.ReleaseMode)
+	}
 
-func CreateRouter() *gin.Engine {
 	router := gin.Default(func(e *gin.Engine) {
 		e.RedirectTrailingSlash = false
 	})
 
-	if config.Config.Debug {
+	if s.config.Debug {
 		router.Use(middleware.RequestLogger())
 	}
 
-	router.Use(middleware.StripTrailingSlashes(router))
+	router.Use(middleware.StripTrailingSlashes(router, s.config))
-	router.Use(middleware.Authentication())
+	router.Use(middleware.Authentication(s.config))
 
-	router.GET("/dbs/:databaseId/colls/:collId/pkranges", handlers.GetPartitionKeyRanges)
+	router.GET("/dbs/:databaseId/colls/:collId/pkranges", routeHandlers.GetPartitionKeyRanges)
 
-	router.POST("/dbs/:databaseId/colls/:collId/docs", handlers.DocumentsPost)
+	router.POST("/dbs/:databaseId/colls/:collId/docs", routeHandlers.DocumentsPost)
-	router.GET("/dbs/:databaseId/colls/:collId/docs", handlers.GetAllDocuments)
+	router.GET("/dbs/:databaseId/colls/:collId/docs", routeHandlers.GetAllDocuments)
-	router.GET("/dbs/:databaseId/colls/:collId/docs/:docId", handlers.GetDocument)
+	router.GET("/dbs/:databaseId/colls/:collId/docs/:docId", routeHandlers.GetDocument)
-	router.PUT("/dbs/:databaseId/colls/:collId/docs/:docId", handlers.ReplaceDocument)
+	router.PUT("/dbs/:databaseId/colls/:collId/docs/:docId", routeHandlers.ReplaceDocument)
-	router.PATCH("/dbs/:databaseId/colls/:collId/docs/:docId", handlers.PatchDocument)
+	router.PATCH("/dbs/:databaseId/colls/:collId/docs/:docId", routeHandlers.PatchDocument)
-	router.DELETE("/dbs/:databaseId/colls/:collId/docs/:docId", handlers.DeleteDocument)
+	router.DELETE("/dbs/:databaseId/colls/:collId/docs/:docId", routeHandlers.DeleteDocument)
 
-	router.POST("/dbs/:databaseId/colls", handlers.CreateCollection)
+	router.POST("/dbs/:databaseId/colls", routeHandlers.CreateCollection)
-	router.GET("/dbs/:databaseId/colls", handlers.GetAllCollections)
+	router.GET("/dbs/:databaseId/colls", routeHandlers.GetAllCollections)
-	router.GET("/dbs/:databaseId/colls/:collId", handlers.GetCollection)
+	router.GET("/dbs/:databaseId/colls/:collId", routeHandlers.GetCollection)
-	router.DELETE("/dbs/:databaseId/colls/:collId", handlers.DeleteCollection)
+	router.DELETE("/dbs/:databaseId/colls/:collId", routeHandlers.DeleteCollection)
 
-	router.POST("/dbs", handlers.CreateDatabase)
+	router.POST("/dbs", routeHandlers.CreateDatabase)
-	router.GET("/dbs", handlers.GetAllDatabases)
+	router.GET("/dbs", routeHandlers.GetAllDatabases)
-	router.GET("/dbs/:databaseId", handlers.GetDatabase)
+	router.GET("/dbs/:databaseId", routeHandlers.GetDatabase)
-	router.DELETE("/dbs/:databaseId", handlers.DeleteDatabase)
+	router.DELETE("/dbs/:databaseId", routeHandlers.DeleteDatabase)
 
-	router.GET("/dbs/:databaseId/colls/:collId/udfs", handlers.GetAllUserDefinedFunctions)
+	router.GET("/dbs/:databaseId/colls/:collId/udfs", routeHandlers.GetAllUserDefinedFunctions)
-	router.GET("/dbs/:databaseId/colls/:collId/sprocs", handlers.GetAllStoredProcedures)
+	router.GET("/dbs/:databaseId/colls/:collId/sprocs", routeHandlers.GetAllStoredProcedures)
-	router.GET("/dbs/:databaseId/colls/:collId/triggers", handlers.GetAllTriggers)
+	router.GET("/dbs/:databaseId/colls/:collId/triggers", routeHandlers.GetAllTriggers)
 
 	router.GET("/offers", handlers.GetOffers)
-	router.GET("/", handlers.GetServerInfo)
+	router.GET("/", routeHandlers.GetServerInfo)
 
-	router.GET("/cosmium/export", handlers.CosmiumExport)
+	router.GET("/cosmium/export", routeHandlers.CosmiumExport)
 
-	handlers.RegisterExplorerHandlers(router)
+	routeHandlers.RegisterExplorerHandlers(router)
 
-	return router
+	s.router = router
 }
 
-func StartAPI() *Server {
+func (s *ApiServer) Start() {
-	if !config.Config.Debug {
+	listenAddress := fmt.Sprintf(":%d", s.config.Port)
-		gin.SetMode(gin.ReleaseMode)
+	s.isActive = true
-	}
-
-	router := CreateRouter()
-	listenAddress := fmt.Sprintf(":%d", config.Config.Port)
-	stopChan := make(chan interface{})
 
 	server := &http.Server{
 		Addr:    listenAddress,
-		Handler: router.Handler(),
+		Handler: s.router.Handler(),
 	}
 
 	go func() {
-		<-stopChan
+		<-s.stopServer
 		logger.Info("Shutting down server...")
 		err := server.Shutdown(context.TODO())
 		if err != nil {
@@ -86,24 +83,22 @@ func StartAPI() *Server {
 	}()
 
 	go func() {
-		if config.Config.DisableTls {
+		if s.config.DisableTls {
 			logger.Infof("Listening and serving HTTP on %s\n", server.Addr)
 			err := server.ListenAndServe()
 			if err != nil {
 				logger.Error("Failed to start HTTP server:", err)
 			}
-			return
+			s.isActive = false
-		}
+		} else if s.config.TLS_CertificatePath != "" && s.config.TLS_CertificateKey != "" {
-
-		if config.Config.TLS_CertificatePath != "" && config.Config.TLS_CertificateKey != "" {
 			logger.Infof("Listening and serving HTTPS on %s\n", server.Addr)
 			err := server.ListenAndServeTLS(
-				config.Config.TLS_CertificatePath,
+				s.config.TLS_CertificatePath,
-				config.Config.TLS_CertificateKey)
+				s.config.TLS_CertificateKey)
 			if err != nil {
 				logger.Error("Failed to start HTTPS server:", err)
 			}
-			return
+			s.isActive = false
 		} else {
 			tlsConfig := tlsprovider.GetDefaultTlsConfig()
 			server.TLSConfig = tlsConfig
@@ -113,9 +108,7 @@ func StartAPI() *Server {
 			if err != nil {
 				logger.Error("Failed to start HTTPS server:", err)
 			}
-			return
+			s.isActive = false
 		}
 	}()
-
-	return &Server{StopServer: stopChan}
 }

api/tests/authentication_test.go

@@ -11,16 +11,15 @@ import (
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
 	"github.com/pikami/cosmium/api/config"
-	"github.com/pikami/cosmium/internal/repositories"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_Authentication(t *testing.T) {
 	ts := runTestServer()
-	defer ts.Close()
+	defer ts.Server.Close()
 
 	t.Run("Should get 200 when correct account key is used", func(t *testing.T) {
-		repositories.DeleteDatabase(testDatabaseName)
+		ts.Repository.DeleteDatabase(testDatabaseName)
 		client, err := azcosmos.NewClientFromConnectionString(
 			fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
 			&azcosmos.ClientOptions{},
@@ -35,26 +34,8 @@ func Test_Authentication(t *testing.T) {
 		assert.Equal(t, createResponse.DatabaseProperties.ID, testDatabaseName)
 	})
 
-	t.Run("Should get 200 when wrong account key is used, but authentication is dissabled", func(t *testing.T) {
-		config.Config.DisableAuth = true
-		repositories.DeleteDatabase(testDatabaseName)
-		client, err := azcosmos.NewClientFromConnectionString(
-			fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, "AAAA"),
-			&azcosmos.ClientOptions{},
-		)
-		assert.Nil(t, err)
-
-		createResponse, err := client.CreateDatabase(
-			context.TODO(),
-			azcosmos.DatabaseProperties{ID: testDatabaseName},
-			&azcosmos.CreateDatabaseOptions{})
-		assert.Nil(t, err)
-		assert.Equal(t, createResponse.DatabaseProperties.ID, testDatabaseName)
-		config.Config.DisableAuth = false
-	})
-
 	t.Run("Should get 401 when wrong account key is used", func(t *testing.T) {
-		repositories.DeleteDatabase(testDatabaseName)
+		ts.Repository.DeleteDatabase(testDatabaseName)
 		client, err := azcosmos.NewClientFromConnectionString(
 			fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, "AAAA"),
 			&azcosmos.ClientOptions{},
@@ -85,3 +66,29 @@ func Test_Authentication(t *testing.T) {
 		assert.Contains(t, string(responseBody), "BACKEND_ENDPOINT")
 	})
 }
+
+func Test_Authentication_Disabled(t *testing.T) {
+	ts := runTestServerCustomConfig(config.ServerConfig{
+		AccountKey:              config.DefaultAccountKey,
+		ExplorerPath:            "/tmp/nothing",
+		ExplorerBaseUrlLocation: config.ExplorerBaseUrlLocation,
+		DisableAuth:             true,
+	})
+	defer ts.Server.Close()
+
+	t.Run("Should get 200 when wrong account key is used, but authentication is dissabled", func(t *testing.T) {
+		ts.Repository.DeleteDatabase(testDatabaseName)
+		client, err := azcosmos.NewClientFromConnectionString(
+			fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, "AAAA"),
+			&azcosmos.ClientOptions{},
+		)
+		assert.Nil(t, err)
+
+		createResponse, err := client.CreateDatabase(
+			context.TODO(),
+			azcosmos.DatabaseProperties{ID: testDatabaseName},
+			&azcosmos.CreateDatabaseOptions{})
+		assert.Nil(t, err)
+		assert.Equal(t, createResponse.DatabaseProperties.ID, testDatabaseName)
+	})
+}

api/tests/collections_test.go

@@ -10,22 +10,21 @@ import (
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
 	"github.com/pikami/cosmium/api/config"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_Collections(t *testing.T) {
 	ts := runTestServer()
-	defer ts.Close()
+	defer ts.Server.Close()
 
 	client, err := azcosmos.NewClientFromConnectionString(
-		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.Config.AccountKey),
+		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
 		&azcosmos.ClientOptions{},
 	)
 	assert.Nil(t, err)
 
-	repositories.CreateDatabase(repositorymodels.Database{ID: testDatabaseName})
+	ts.Repository.CreateDatabase(repositorymodels.Database{ID: testDatabaseName})
 	databaseClient, err := client.NewDatabase(testDatabaseName)
 	assert.Nil(t, err)
 
@@ -40,7 +39,7 @@ func Test_Collections(t *testing.T) {
 		})
 
 		t.Run("Should return conflict when collection exists", func(t *testing.T) {
-			repositories.CreateCollection(testDatabaseName, repositorymodels.Collection{
+			ts.Repository.CreateCollection(testDatabaseName, repositorymodels.Collection{
 				ID: testCollectionName,
 			})
 
@@ -60,7 +59,7 @@ func Test_Collections(t *testing.T) {
 
 	t.Run("Collection Read", func(t *testing.T) {
 		t.Run("Should read collection", func(t *testing.T) {
-			repositories.CreateCollection(testDatabaseName, repositorymodels.Collection{
+			ts.Repository.CreateCollection(testDatabaseName, repositorymodels.Collection{
 				ID: testCollectionName,
 			})
 
@@ -74,7 +73,7 @@ func Test_Collections(t *testing.T) {
 		})
 
 		t.Run("Should return not found when collection does not exist", func(t *testing.T) {
-			repositories.DeleteCollection(testDatabaseName, testCollectionName)
+			ts.Repository.DeleteCollection(testDatabaseName, testCollectionName)
 
 			collectionResponse, err := databaseClient.NewContainer(testCollectionName)
 			assert.Nil(t, err)
@@ -93,7 +92,7 @@ func Test_Collections(t *testing.T) {
 
 	t.Run("Collection Delete", func(t *testing.T) {
 		t.Run("Should delete collection", func(t *testing.T) {
-			repositories.CreateCollection(testDatabaseName, repositorymodels.Collection{
+			ts.Repository.CreateCollection(testDatabaseName, repositorymodels.Collection{
 				ID: testCollectionName,
 			})
 
@@ -106,7 +105,7 @@ func Test_Collections(t *testing.T) {
 		})
 
 		t.Run("Should return not found when collection does not exist", func(t *testing.T) {
-			repositories.DeleteCollection(testDatabaseName, testCollectionName)
+			ts.Repository.DeleteCollection(testDatabaseName, testCollectionName)
 
 			collectionResponse, err := databaseClient.NewContainer(testCollectionName)
 			assert.Nil(t, err)

api/tests/config_test.go

@@ -5,14 +5,37 @@ import (
 
 	"github.com/pikami/cosmium/api"
 	"github.com/pikami/cosmium/api/config"
+	"github.com/pikami/cosmium/internal/repositories"
 )
 
-func runTestServer() *httptest.Server {
+type TestServer struct {
-	config.Config.AccountKey = config.DefaultAccountKey
+	Server     *httptest.Server
-	config.Config.ExplorerPath = "/tmp/nothing"
+	Repository *repositories.DataRepository
-	config.Config.ExplorerBaseUrlLocation = config.ExplorerBaseUrlLocation
+	URL        string
+}
 
-	return httptest.NewServer(api.CreateRouter())
+func runTestServerCustomConfig(config config.ServerConfig) *TestServer {
+	repository := repositories.NewDataRepository(repositories.RepositoryOptions{})
+
+	api := api.NewApiServer(repository, config)
+
+	server := httptest.NewServer(api.GetRouter())
+
+	return &TestServer{
+		Server:     server,
+		Repository: repository,
+		URL:        server.URL,
+	}
+}
+
+func runTestServer() *TestServer {
+	config := config.ServerConfig{
+		AccountKey:              config.DefaultAccountKey,
+		ExplorerPath:            "/tmp/nothing",
+		ExplorerBaseUrlLocation: config.ExplorerBaseUrlLocation,
+	}
+
+	return runTestServerCustomConfig(config)
 }
 
 const (

api/tests/databases_test.go

@@ -10,24 +10,23 @@ import (
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
 	"github.com/pikami/cosmium/api/config"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_Databases(t *testing.T) {
 	ts := runTestServer()
-	defer ts.Close()
+	defer ts.Server.Close()
 
 	client, err := azcosmos.NewClientFromConnectionString(
-		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.Config.AccountKey),
+		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
 		&azcosmos.ClientOptions{},
 	)
 	assert.Nil(t, err)
 
 	t.Run("Database Create", func(t *testing.T) {
 		t.Run("Should create database", func(t *testing.T) {
-			repositories.DeleteDatabase(testDatabaseName)
+			ts.Repository.DeleteDatabase(testDatabaseName)
 
 			createResponse, err := client.CreateDatabase(context.TODO(), azcosmos.DatabaseProperties{
 				ID: testDatabaseName,
@@ -38,7 +37,7 @@ func Test_Databases(t *testing.T) {
 		})
 
 		t.Run("Should return conflict when database exists", func(t *testing.T) {
-			repositories.CreateDatabase(repositorymodels.Database{
+			ts.Repository.CreateDatabase(repositorymodels.Database{
 				ID: testDatabaseName,
 			})
 
@@ -58,7 +57,7 @@ func Test_Databases(t *testing.T) {
 
 	t.Run("Database Read", func(t *testing.T) {
 		t.Run("Should read database", func(t *testing.T) {
-			repositories.CreateDatabase(repositorymodels.Database{
+			ts.Repository.CreateDatabase(repositorymodels.Database{
 				ID: testDatabaseName,
 			})
 
@@ -72,7 +71,7 @@ func Test_Databases(t *testing.T) {
 		})
 
 		t.Run("Should return not found when database does not exist", func(t *testing.T) {
-			repositories.DeleteDatabase(testDatabaseName)
+			ts.Repository.DeleteDatabase(testDatabaseName)
 
 			databaseResponse, err := client.NewDatabase(testDatabaseName)
 			assert.Nil(t, err)
@@ -91,7 +90,7 @@ func Test_Databases(t *testing.T) {
 
 	t.Run("Database Delete", func(t *testing.T) {
 		t.Run("Should delete database", func(t *testing.T) {
-			repositories.CreateDatabase(repositorymodels.Database{
+			ts.Repository.CreateDatabase(repositorymodels.Database{
 				ID: testDatabaseName,
 			})
 
@@ -104,7 +103,7 @@ func Test_Databases(t *testing.T) {
 		})
 
 		t.Run("Should return not found when database does not exist", func(t *testing.T) {
-			repositories.DeleteDatabase(testDatabaseName)
+			ts.Repository.DeleteDatabase(testDatabaseName)
 
 			databaseResponse, err := client.NewDatabase(testDatabaseName)
 			assert.Nil(t, err)

api/tests/documents_test.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"net/http/httptest"
 	"reflect"
 	"sync"
 	"testing"
@@ -15,7 +14,6 @@ import (
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
 	"github.com/pikami/cosmium/api/config"
-	"github.com/pikami/cosmium/internal/repositories"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 	"github.com/stretchr/testify/assert"
 )
@@ -55,9 +53,11 @@ func testCosmosQuery(t *testing.T,
 	}
 }
 
-func documents_InitializeDb(t *testing.T) (*httptest.Server, *azcosmos.ContainerClient) {
+func documents_InitializeDb(t *testing.T) (*TestServer, *azcosmos.ContainerClient) {
-	repositories.CreateDatabase(repositorymodels.Database{ID: testDatabaseName})
+	ts := runTestServer()
-	repositories.CreateCollection(testDatabaseName, repositorymodels.Collection{
+
+	ts.Repository.CreateDatabase(repositorymodels.Database{ID: testDatabaseName})
+	ts.Repository.CreateCollection(testDatabaseName, repositorymodels.Collection{
 		ID: testCollectionName,
 		PartitionKey: struct {
 			Paths   []string "json:\"paths\""
@@ -67,13 +67,11 @@ func documents_InitializeDb(t *testing.T) (*httptest.Server, *azcosmos.Container
 			Paths: []string{"/pk"},
 		},
 	})
-	repositories.CreateDocument(testDatabaseName, testCollectionName, map[string]interface{}{"id": "12345", "pk": "123", "isCool": false, "arr": []int{1, 2, 3}})
+	ts.Repository.CreateDocument(testDatabaseName, testCollectionName, map[string]interface{}{"id": "12345", "pk": "123", "isCool": false, "arr": []int{1, 2, 3}})
-	repositories.CreateDocument(testDatabaseName, testCollectionName, map[string]interface{}{"id": "67890", "pk": "456", "isCool": true, "arr": []int{6, 7, 8}})
+	ts.Repository.CreateDocument(testDatabaseName, testCollectionName, map[string]interface{}{"id": "67890", "pk": "456", "isCool": true, "arr": []int{6, 7, 8}})
-
-	ts := runTestServer()
 
 	client, err := azcosmos.NewClientFromConnectionString(
-		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.Config.AccountKey),
+		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
 		&azcosmos.ClientOptions{},
 	)
 	assert.Nil(t, err)
@@ -86,7 +84,7 @@ func documents_InitializeDb(t *testing.T) (*httptest.Server, *azcosmos.Container
 
 func Test_Documents(t *testing.T) {
 	ts, collectionClient := documents_InitializeDb(t)
-	defer ts.Close()
+	defer ts.Server.Close()
 
 	t.Run("Should query document", func(t *testing.T) {
 		testCosmosQuery(t, collectionClient,
@@ -149,6 +147,21 @@ func Test_Documents(t *testing.T) {
 		)
 	})
 
+	t.Run("Should query document with query parameters as accessor", func(t *testing.T) {
+		testCosmosQuery(t, collectionClient,
+			`select c.id
+			FROM c
+			WHERE c[@param]="67890"
+			ORDER BY c.id`,
+			[]azcosmos.QueryParameter{
+				{Name: "@param", Value: "id"},
+			},
+			[]interface{}{
+				map[string]interface{}{"id": "67890"},
+			},
+		)
+	})
+
 	t.Run("Should query array accessor", func(t *testing.T) {
 		testCosmosQuery(t, collectionClient,
 			`SELECT c.id,
@@ -218,15 +231,18 @@ func Test_Documents(t *testing.T) {
 
 func Test_Documents_Patch(t *testing.T) {
 	ts, collectionClient := documents_InitializeDb(t)
-	defer ts.Close()
+	defer ts.Server.Close()
 
 	t.Run("Should PATCH document", func(t *testing.T) {
 		context := context.TODO()
-		expectedData := map[string]interface{}{"id": "67890", "pk": "456", "newField": "newValue"}
+		expectedData := map[string]interface{}{"id": "67890", "pk": "666", "newField": "newValue", "incr": 15., "setted": "isSet"}
 
 		patch := azcosmos.PatchOperations{}
 		patch.AppendAdd("/newField", "newValue")
+		patch.AppendIncrement("/incr", 15)
 		patch.AppendRemove("/isCool")
+		patch.AppendReplace("/pk", "666")
+		patch.AppendSet("/setted", "isSet")
 
 		itemResponse, err := collectionClient.PatchItem(
 			context,
@@ -239,13 +255,15 @@ func Test_Documents_Patch(t *testing.T) {
 		)
 		assert.Nil(t, err)
 
-		var itemResponseBody map[string]string
+		var itemResponseBody map[string]interface{}
 		json.Unmarshal(itemResponse.Value, &itemResponseBody)
 
 		assert.Equal(t, expectedData["id"], itemResponseBody["id"])
 		assert.Equal(t, expectedData["pk"], itemResponseBody["pk"])
 		assert.Empty(t, itemResponseBody["isCool"])
 		assert.Equal(t, expectedData["newField"], itemResponseBody["newField"])
+		assert.Equal(t, expectedData["incr"], itemResponseBody["incr"])
+		assert.Equal(t, expectedData["setted"], itemResponseBody["setted"])
 	})
 
 	t.Run("Should not allow to PATCH document ID", func(t *testing.T) {

api/tests/documents_trailingslash_test.go

@@ -15,14 +15,14 @@ import (
 // Request document with trailing slash like python cosmosdb client does.
 func Test_Documents_Read_Trailing_Slash(t *testing.T) {
 	ts, _ := documents_InitializeDb(t)
-	defer ts.Close()
+	defer ts.Server.Close()
 
 	t.Run("Read doc with client that appends slash to path", func(t *testing.T) {
 		resourceIdTemplate := "dbs/%s/colls/%s/docs/%s"
 		path := fmt.Sprintf(resourceIdTemplate, testDatabaseName, testCollectionName, "12345")
 		testUrl := ts.URL + "/" + path + "/"
 		date := time.Now().Format(time.RFC1123)
-		signature := authentication.GenerateSignature("GET", "docs", path, date, config.Config.AccountKey)
+		signature := authentication.GenerateSignature("GET", "docs", path, date, config.DefaultAccountKey)
 		httpClient := &http.Client{}
 		req, _ := http.NewRequest("GET", testUrl, nil)
 		req.Header.Add("x-ms-date", date)

cmd/server/server.go

@@ -11,16 +11,20 @@ import (
 )
 
 func main() {
-	config.ParseFlags()
+	configuration := config.ParseFlags()
 
-	repositories.InitializeRepository()
+	repository := repositories.NewDataRepository(repositories.RepositoryOptions{
+		InitialDataFilePath: configuration.InitialDataFilePath,
+		PersistDataFilePath: configuration.PersistDataFilePath,
+	})
 
-	server := api.StartAPI()
+	server := api.NewApiServer(repository, configuration)
+	server.Start()
 
-	waitForExit(server)
+	waitForExit(server, repository, configuration)
 }
 
-func waitForExit(server *api.Server) {
+func waitForExit(server *api.ApiServer, repository *repositories.DataRepository, config config.ServerConfig) {
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
 
@@ -28,9 +32,9 @@ func waitForExit(server *api.Server) {
 	<-sigs
 
 	// Stop the server
-	server.StopServer <- true
+	server.Stop()
 
-	if config.Config.PersistDataFilePath != "" {
+	if config.PersistDataFilePath != "" {
-		repositories.SaveStateFS(config.Config.PersistDataFilePath)
+		repository.SaveStateFS(config.PersistDataFilePath)
 	}
 }

go.mod

@@ -5,9 +5,9 @@ go 1.22.0
 require (
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.9.2
 	github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v0.3.6
-	github.com/evanphx/json-patch/v5 v5.9.0
 	github.com/gin-gonic/gin v1.10.0
 	github.com/google/uuid v1.6.0
+	github.com/pikami/json-patch/v5 v5.9.2
 	github.com/stretchr/testify v1.9.0
 	golang.org/x/exp v0.0.0-20241217172543-b2144cdd0a67
 )
@@ -39,7 +39,7 @@ require (
 	github.com/ugorji/go/codec v1.2.12 // indirect
 	golang.org/x/arch v0.12.0 // indirect
 	golang.org/x/crypto v0.31.0 // indirect
-	golang.org/x/net v0.32.0 // indirect
+	golang.org/x/net v0.33.0 // indirect
 	golang.org/x/sys v0.28.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
 	google.golang.org/protobuf v1.36.0 // indirect

go.sum

@@ -22,8 +22,6 @@ github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQ
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/evanphx/json-patch/v5 v5.9.0 h1:kcBlZQbplgElYIlo/n1hJbls2z/1awpXxpRi0/FOJfg=
-github.com/evanphx/json-patch/v5 v5.9.0/go.mod h1:VNkHZ/282BpEyt/tObQO8s5CMPmYYq14uClGH4abBuQ=
 github.com/gabriel-vasile/mimetype v1.4.7 h1:SKFKl7kD0RiPdbht0s7hFtjl489WcQ1VyPW8ZzUMYCA=
 github.com/gabriel-vasile/mimetype v1.4.7/go.mod h1:GDlAgAyIRT27BhFl53XNAFtfjzOkLaF35JdEG0P7LtU=
 github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
@@ -66,6 +64,8 @@ github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9G
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/pelletier/go-toml/v2 v2.2.3 h1:YmeHyLY8mFWbdkNWwpr+qIL2bEqT0o95WSdkNHvL12M=
 github.com/pelletier/go-toml/v2 v2.2.3/go.mod h1:MfCQTFTvCcUyyvvwm1+G6H/jORL20Xlb6rzQu9GuUkc=
+github.com/pikami/json-patch/v5 v5.9.2 h1:ciTlocWccYVE3DEa45dsMm02c/tOvcaBY7PpEUNZhrU=
+github.com/pikami/json-patch/v5 v5.9.2/go.mod h1:eJIScZ4xgf2aBHLi2UMzYtjlWESUBDOBf7EAx3JW0nI=
 github.com/pkg/browser v0.0.0-20210115035449-ce105d075bb4 h1:Qj1ukM4GlMWXNdMBuXcXfz/Kw9s1qm0CLY32QxuSImI=
 github.com/pkg/browser v0.0.0-20210115035449-ce105d075bb4/go.mod h1:N6UoU20jOqggOuDwUaBQpluzLNDqif3kq9z2wpdYEfQ=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -92,8 +92,8 @@ golang.org/x/crypto v0.31.0 h1:ihbySMvVjLAeSH1IbfcRTkD/iNscyz8rGzjF/E5hV6U=
 golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
 golang.org/x/exp v0.0.0-20241217172543-b2144cdd0a67 h1:1UoZQm6f0P/ZO0w1Ri+f+ifG/gXhegadRdwBIXEFWDo=
 golang.org/x/exp v0.0.0-20241217172543-b2144cdd0a67/go.mod h1:qj5a5QZpwLU2NLQudwIN5koi3beDhSAlJwa67PuM98c=
-golang.org/x/net v0.32.0 h1:ZqPmj8Kzc+Y6e0+skZsuACbx+wzMgo5MQsJh9Qd6aYI=
+golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
-golang.org/x/net v0.32.0/go.mod h1:CwU0IoeOlnQQWJ6ioyFrfRuomB8GKF6KbYXZVyeXNfs=
+golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
 golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=

internal/logger/logger.go

@@ -3,22 +3,22 @@ package logger
 import (
 	"log"
 	"os"
-
-	"github.com/pikami/cosmium/api/config"
 )
 
+var EnableDebugOutput = false
+
 var DebugLogger = log.New(os.Stdout, "", log.Ldate|log.Ltime|log.Lshortfile)
 var InfoLogger = log.New(os.Stdout, "", log.Ldate|log.Ltime)
 var ErrorLogger = log.New(os.Stderr, "", log.Ldate|log.Ltime|log.Lshortfile)
 
 func Debug(v ...any) {
-	if config.Config.Debug {
+	if EnableDebugOutput {
 		DebugLogger.Println(v...)
 	}
 }
 
 func Debugf(format string, v ...any) {
-	if config.Config.Debug {
+	if EnableDebugOutput {
 		DebugLogger.Printf(format, v...)
 	}
 }

internal/repositories/collections.go

@@ -11,60 +11,60 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func GetAllCollections(databaseId string) ([]repositorymodels.Collection, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetAllCollections(databaseId string) ([]repositorymodels.Collection, repositorymodels.RepositoryStatus) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	if _, ok := storeState.Databases[databaseId]; !ok {
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
 		return make([]repositorymodels.Collection, 0), repositorymodels.StatusNotFound
 	}
 
-	return maps.Values(storeState.Collections[databaseId]), repositorymodels.StatusOk
+	return maps.Values(r.storeState.Collections[databaseId]), repositorymodels.StatusOk
 }
 
-func GetCollection(databaseId string, collectionId string) (repositorymodels.Collection, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetCollection(databaseId string, collectionId string) (repositorymodels.Collection, repositorymodels.RepositoryStatus) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	if _, ok := storeState.Databases[databaseId]; !ok {
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
 		return repositorymodels.Collection{}, repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Collections[databaseId][collectionId]; !ok {
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
 		return repositorymodels.Collection{}, repositorymodels.StatusNotFound
 	}
 
-	return storeState.Collections[databaseId][collectionId], repositorymodels.StatusOk
+	return r.storeState.Collections[databaseId][collectionId], repositorymodels.StatusOk
 }
 
-func DeleteCollection(databaseId string, collectionId string) repositorymodels.RepositoryStatus {
+func (r *DataRepository) DeleteCollection(databaseId string, collectionId string) repositorymodels.RepositoryStatus {
-	storeState.Lock()
+	r.storeState.Lock()
-	defer storeState.Unlock()
+	defer r.storeState.Unlock()
 
-	if _, ok := storeState.Databases[databaseId]; !ok {
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
 		return repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Collections[databaseId][collectionId]; !ok {
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
 		return repositorymodels.StatusNotFound
 	}
 
-	delete(storeState.Collections[databaseId], collectionId)
+	delete(r.storeState.Collections[databaseId], collectionId)
 
 	return repositorymodels.StatusOk
 }
 
-func CreateCollection(databaseId string, newCollection repositorymodels.Collection) (repositorymodels.Collection, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) CreateCollection(databaseId string, newCollection repositorymodels.Collection) (repositorymodels.Collection, repositorymodels.RepositoryStatus) {
-	storeState.Lock()
+	r.storeState.Lock()
-	defer storeState.Unlock()
+	defer r.storeState.Unlock()
 
 	var ok bool
 	var database repositorymodels.Database
-	if database, ok = storeState.Databases[databaseId]; !ok {
+	if database, ok = r.storeState.Databases[databaseId]; !ok {
 		return repositorymodels.Collection{}, repositorymodels.StatusNotFound
 	}
 
-	if _, ok = storeState.Collections[databaseId][newCollection.ID]; ok {
+	if _, ok = r.storeState.Collections[databaseId][newCollection.ID]; ok {
 		return repositorymodels.Collection{}, repositorymodels.Conflict
 	}
 
@@ -75,8 +75,8 @@ func CreateCollection(databaseId string, newCollection repositorymodels.Collecti
 	newCollection.ETag = fmt.Sprintf("\"%s\"", uuid.New())
 	newCollection.Self = fmt.Sprintf("dbs/%s/colls/%s/", database.ResourceID, newCollection.ResourceID)
 
-	storeState.Collections[databaseId][newCollection.ID] = newCollection
+	r.storeState.Collections[databaseId][newCollection.ID] = newCollection
-	storeState.Documents[databaseId][newCollection.ID] = make(map[string]repositorymodels.Document)
+	r.storeState.Documents[databaseId][newCollection.ID] = make(map[string]repositorymodels.Document)
 
 	return newCollection, repositorymodels.StatusOk
 }

internal/repositories/databases.go

@@ -10,42 +10,42 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func GetAllDatabases() ([]repositorymodels.Database, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetAllDatabases() ([]repositorymodels.Database, repositorymodels.RepositoryStatus) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	return maps.Values(storeState.Databases), repositorymodels.StatusOk
+	return maps.Values(r.storeState.Databases), repositorymodels.StatusOk
 }
 
-func GetDatabase(id string) (repositorymodels.Database, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetDatabase(id string) (repositorymodels.Database, repositorymodels.RepositoryStatus) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	if database, ok := storeState.Databases[id]; ok {
+	if database, ok := r.storeState.Databases[id]; ok {
 		return database, repositorymodels.StatusOk
 	}
 
 	return repositorymodels.Database{}, repositorymodels.StatusNotFound
 }
 
-func DeleteDatabase(id string) repositorymodels.RepositoryStatus {
+func (r *DataRepository) DeleteDatabase(id string) repositorymodels.RepositoryStatus {
-	storeState.Lock()
+	r.storeState.Lock()
-	defer storeState.Unlock()
+	defer r.storeState.Unlock()
 
-	if _, ok := storeState.Databases[id]; !ok {
+	if _, ok := r.storeState.Databases[id]; !ok {
 		return repositorymodels.StatusNotFound
 	}
 
-	delete(storeState.Databases, id)
+	delete(r.storeState.Databases, id)
 
 	return repositorymodels.StatusOk
 }
 
-func CreateDatabase(newDatabase repositorymodels.Database) (repositorymodels.Database, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) CreateDatabase(newDatabase repositorymodels.Database) (repositorymodels.Database, repositorymodels.RepositoryStatus) {
-	storeState.Lock()
+	r.storeState.Lock()
-	defer storeState.Unlock()
+	defer r.storeState.Unlock()
 
-	if _, ok := storeState.Databases[newDatabase.ID]; ok {
+	if _, ok := r.storeState.Databases[newDatabase.ID]; ok {
 		return repositorymodels.Database{}, repositorymodels.Conflict
 	}
 
@@ -54,9 +54,9 @@ func CreateDatabase(newDatabase repositorymodels.Database) (repositorymodels.Dat
 	newDatabase.ETag = fmt.Sprintf("\"%s\"", uuid.New())
 	newDatabase.Self = fmt.Sprintf("dbs/%s/", newDatabase.ResourceID)
 
-	storeState.Databases[newDatabase.ID] = newDatabase
+	r.storeState.Databases[newDatabase.ID] = newDatabase
-	storeState.Collections[newDatabase.ID] = make(map[string]repositorymodels.Collection)
+	r.storeState.Collections[newDatabase.ID] = make(map[string]repositorymodels.Collection)
-	storeState.Documents[newDatabase.ID] = make(map[string]map[string]repositorymodels.Document)
+	r.storeState.Documents[newDatabase.ID] = make(map[string]map[string]repositorymodels.Document)
 
 	return newDatabase, repositorymodels.StatusOk
 }

internal/repositories/documents.go

@@ -14,64 +14,64 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func GetAllDocuments(databaseId string, collectionId string) ([]repositorymodels.Document, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetAllDocuments(databaseId string, collectionId string) ([]repositorymodels.Document, repositorymodels.RepositoryStatus) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	if _, ok := storeState.Databases[databaseId]; !ok {
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
 		return make([]repositorymodels.Document, 0), repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Collections[databaseId][collectionId]; !ok {
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
 		return make([]repositorymodels.Document, 0), repositorymodels.StatusNotFound
 	}
 
-	return maps.Values(storeState.Documents[databaseId][collectionId]), repositorymodels.StatusOk
+	return maps.Values(r.storeState.Documents[databaseId][collectionId]), repositorymodels.StatusOk
 }
 
-func GetDocument(databaseId string, collectionId string, documentId string) (repositorymodels.Document, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetDocument(databaseId string, collectionId string, documentId string) (repositorymodels.Document, repositorymodels.RepositoryStatus) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	if _, ok := storeState.Databases[databaseId]; !ok {
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
 		return repositorymodels.Document{}, repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Collections[databaseId][collectionId]; !ok {
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
 		return repositorymodels.Document{}, repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Documents[databaseId][collectionId][documentId]; !ok {
+	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; !ok {
 		return repositorymodels.Document{}, repositorymodels.StatusNotFound
 	}
 
-	return storeState.Documents[databaseId][collectionId][documentId], repositorymodels.StatusOk
+	return r.storeState.Documents[databaseId][collectionId][documentId], repositorymodels.StatusOk
 }
 
-func DeleteDocument(databaseId string, collectionId string, documentId string) repositorymodels.RepositoryStatus {
+func (r *DataRepository) DeleteDocument(databaseId string, collectionId string, documentId string) repositorymodels.RepositoryStatus {
-	storeState.Lock()
+	r.storeState.Lock()
-	defer storeState.Unlock()
+	defer r.storeState.Unlock()
 
-	if _, ok := storeState.Databases[databaseId]; !ok {
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
 		return repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Collections[databaseId][collectionId]; !ok {
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
 		return repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Documents[databaseId][collectionId][documentId]; !ok {
+	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; !ok {
 		return repositorymodels.StatusNotFound
 	}
 
-	delete(storeState.Documents[databaseId][collectionId], documentId)
+	delete(r.storeState.Documents[databaseId][collectionId], documentId)
 
 	return repositorymodels.StatusOk
 }
 
-func CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (repositorymodels.Document, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (repositorymodels.Document, repositorymodels.RepositoryStatus) {
-	storeState.Lock()
+	r.storeState.Lock()
-	defer storeState.Unlock()
+	defer r.storeState.Unlock()
 
 	var ok bool
 	var documentId string
@@ -82,15 +82,15 @@ func CreateDocument(databaseId string, collectionId string, document map[string]
 		document["id"] = documentId
 	}
 
-	if database, ok = storeState.Databases[databaseId]; !ok {
+	if database, ok = r.storeState.Databases[databaseId]; !ok {
 		return repositorymodels.Document{}, repositorymodels.StatusNotFound
 	}
 
-	if collection, ok = storeState.Collections[databaseId][collectionId]; !ok {
+	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
 		return repositorymodels.Document{}, repositorymodels.StatusNotFound
 	}
 
-	if _, ok := storeState.Documents[databaseId][collectionId][documentId]; ok {
+	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; ok {
 		return repositorymodels.Document{}, repositorymodels.Conflict
 	}
 
@@ -99,19 +99,19 @@ func CreateDocument(databaseId string, collectionId string, document map[string]
 	document["_etag"] = fmt.Sprintf("\"%s\"", uuid.New())
 	document["_self"] = fmt.Sprintf("dbs/%s/colls/%s/docs/%s/", database.ResourceID, collection.ResourceID, document["_rid"])
 
-	storeState.Documents[databaseId][collectionId][documentId] = document
+	r.storeState.Documents[databaseId][collectionId][documentId] = document
 
 	return document, repositorymodels.StatusOk
 }
 
-func ExecuteQueryDocuments(databaseId string, collectionId string, query string, queryParameters map[string]interface{}) ([]memoryexecutor.RowType, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) ExecuteQueryDocuments(databaseId string, collectionId string, query string, queryParameters map[string]interface{}) ([]memoryexecutor.RowType, repositorymodels.RepositoryStatus) {
 	parsedQuery, err := nosql.Parse("", []byte(query))
 	if err != nil {
 		log.Printf("Failed to parse query: %s\nerr: %v", query, err)
 		return nil, repositorymodels.BadRequest
 	}
 
-	collectionDocuments, status := GetAllDocuments(databaseId, collectionId)
+	collectionDocuments, status := r.GetAllDocuments(databaseId, collectionId)
 	if status != repositorymodels.StatusOk {
 		return nil, status
 	}

internal/repositories/partition_key_ranges.go

@@ -9,19 +9,19 @@ import (
 )
 
 // I have no idea what this is tbh
-func GetPartitionKeyRanges(databaseId string, collectionId string) ([]repositorymodels.PartitionKeyRange, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetPartitionKeyRanges(databaseId string, collectionId string) ([]repositorymodels.PartitionKeyRange, repositorymodels.RepositoryStatus) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
 	databaseRid := databaseId
 	collectionRid := collectionId
 	var timestamp int64 = 0
 
-	if database, ok := storeState.Databases[databaseId]; !ok {
+	if database, ok := r.storeState.Databases[databaseId]; !ok {
 		databaseRid = database.ResourceID
 	}
 
-	if collection, ok := storeState.Collections[databaseId][collectionId]; !ok {
+	if collection, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
 		collectionRid = collection.ResourceID
 		timestamp = collection.TimeStamp
 	}

internal/repositories/repositories.go

@@ -0,0 +1,37 @@
+package repositories
+
+import repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+
+type DataRepository struct {
+	storedProcedures     []repositorymodels.StoredProcedure
+	triggers             []repositorymodels.Trigger
+	userDefinedFunctions []repositorymodels.UserDefinedFunction
+	storeState           repositorymodels.State
+
+	initialDataFilePath string
+	persistDataFilePath string
+}
+
+type RepositoryOptions struct {
+	InitialDataFilePath string
+	PersistDataFilePath string
+}
+
+func NewDataRepository(options RepositoryOptions) *DataRepository {
+	repository := &DataRepository{
+		storedProcedures:     []repositorymodels.StoredProcedure{},
+		triggers:             []repositorymodels.Trigger{},
+		userDefinedFunctions: []repositorymodels.UserDefinedFunction{},
+		storeState: repositorymodels.State{
+			Databases:   make(map[string]repositorymodels.Database),
+			Collections: make(map[string]map[string]repositorymodels.Collection),
+			Documents:   make(map[string]map[string]map[string]repositorymodels.Document),
+		},
+		initialDataFilePath: options.InitialDataFilePath,
+		persistDataFilePath: options.PersistDataFilePath,
+	}
+
+	repository.InitializeRepository()
+
+	return repository
+}

internal/repositories/state.go

@@ -6,28 +6,18 @@ import (
 	"os"
 	"reflect"
 
-	"github.com/pikami/cosmium/api/config"
 	"github.com/pikami/cosmium/internal/logger"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-var storedProcedures = []repositorymodels.StoredProcedure{}
+func (r *DataRepository) InitializeRepository() {
-var triggers = []repositorymodels.Trigger{}
+	if r.initialDataFilePath != "" {
-var userDefinedFunctions = []repositorymodels.UserDefinedFunction{}
+		r.LoadStateFS(r.initialDataFilePath)
-var storeState = repositorymodels.State{
-	Databases:   make(map[string]repositorymodels.Database),
-	Collections: make(map[string]map[string]repositorymodels.Collection),
-	Documents:   make(map[string]map[string]map[string]repositorymodels.Document),
-}
-
-func InitializeRepository() {
-	if config.Config.InitialDataFilePath != "" {
-		LoadStateFS(config.Config.InitialDataFilePath)
 		return
 	}
 
-	if config.Config.PersistDataFilePath != "" {
+	if r.persistDataFilePath != "" {
-		stat, err := os.Stat(config.Config.PersistDataFilePath)
+		stat, err := os.Stat(r.persistDataFilePath)
 		if err != nil {
 			return
 		}
@@ -37,39 +27,52 @@ func InitializeRepository() {
 			os.Exit(1)
 		}
 
-		LoadStateFS(config.Config.PersistDataFilePath)
+		r.LoadStateFS(r.persistDataFilePath)
 		return
 	}
 }
 
-func LoadStateFS(filePath string) {
+func (r *DataRepository) LoadStateFS(filePath string) {
 	data, err := os.ReadFile(filePath)
 	if err != nil {
 		log.Fatalf("Error reading state JSON file: %v", err)
 		return
 	}
 
-	var state repositorymodels.State
+	err = r.LoadStateJSON(string(data))
-	if err := json.Unmarshal(data, &state); err != nil {
+	if err != nil {
 		log.Fatalf("Error unmarshalling state JSON: %v", err)
-		return
 	}
-
-	logger.Info("Loaded state:")
-	logger.Infof("Databases: %d\n", getLength(state.Databases))
-	logger.Infof("Collections: %d\n", getLength(state.Collections))
-	logger.Infof("Documents: %d\n", getLength(state.Documents))
-
-	storeState = state
-
-	ensureStoreStateNoNullReferences()
 }
 
-func SaveStateFS(filePath string) {
+func (r *DataRepository) LoadStateJSON(jsonData string) error {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	data, err := json.MarshalIndent(storeState, "", "\t")
+	var state repositorymodels.State
+	if err := json.Unmarshal([]byte(jsonData), &state); err != nil {
+		return err
+	}
+
+	r.storeState.Collections = state.Collections
+	r.storeState.Databases = state.Databases
+	r.storeState.Documents = state.Documents
+
+	r.ensureStoreStateNoNullReferences()
+
+	logger.Info("Loaded state:")
+	logger.Infof("Databases: %d\n", getLength(r.storeState.Databases))
+	logger.Infof("Collections: %d\n", getLength(r.storeState.Collections))
+	logger.Infof("Documents: %d\n", getLength(r.storeState.Documents))
+
+	return nil
+}
+
+func (r *DataRepository) SaveStateFS(filePath string) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	data, err := json.MarshalIndent(r.storeState, "", "\t")
 	if err != nil {
 		logger.Errorf("Failed to save state: %v\n", err)
 		return
@@ -78,16 +81,16 @@ func SaveStateFS(filePath string) {
 	os.WriteFile(filePath, data, os.ModePerm)
 
 	logger.Info("Saved state:")
-	logger.Infof("Databases: %d\n", getLength(storeState.Databases))
+	logger.Infof("Databases: %d\n", getLength(r.storeState.Databases))
-	logger.Infof("Collections: %d\n", getLength(storeState.Collections))
+	logger.Infof("Collections: %d\n", getLength(r.storeState.Collections))
-	logger.Infof("Documents: %d\n", getLength(storeState.Documents))
+	logger.Infof("Documents: %d\n", getLength(r.storeState.Documents))
 }
 
-func GetState() (string, error) {
+func (r *DataRepository) GetState() (string, error) {
-	storeState.RLock()
+	r.storeState.RLock()
-	defer storeState.RUnlock()
+	defer r.storeState.RUnlock()
 
-	data, err := json.MarshalIndent(storeState, "", "\t")
+	data, err := json.MarshalIndent(r.storeState, "", "\t")
 	if err != nil {
 		logger.Errorf("Failed to serialize state: %v\n", err)
 		return "", err
@@ -121,36 +124,36 @@ func getLength(v interface{}) int {
 	return count
 }
 
-func ensureStoreStateNoNullReferences() {
+func (r *DataRepository) ensureStoreStateNoNullReferences() {
-	if storeState.Databases == nil {
+	if r.storeState.Databases == nil {
-		storeState.Databases = make(map[string]repositorymodels.Database)
+		r.storeState.Databases = make(map[string]repositorymodels.Database)
 	}
 
-	if storeState.Collections == nil {
+	if r.storeState.Collections == nil {
-		storeState.Collections = make(map[string]map[string]repositorymodels.Collection)
+		r.storeState.Collections = make(map[string]map[string]repositorymodels.Collection)
 	}
 
-	if storeState.Documents == nil {
+	if r.storeState.Documents == nil {
-		storeState.Documents = make(map[string]map[string]map[string]repositorymodels.Document)
+		r.storeState.Documents = make(map[string]map[string]map[string]repositorymodels.Document)
 	}
 
-	for database := range storeState.Databases {
+	for database := range r.storeState.Databases {
-		if storeState.Collections[database] == nil {
+		if r.storeState.Collections[database] == nil {
-			storeState.Collections[database] = make(map[string]repositorymodels.Collection)
+			r.storeState.Collections[database] = make(map[string]repositorymodels.Collection)
 		}
 
-		if storeState.Documents[database] == nil {
+		if r.storeState.Documents[database] == nil {
-			storeState.Documents[database] = make(map[string]map[string]repositorymodels.Document)
+			r.storeState.Documents[database] = make(map[string]map[string]repositorymodels.Document)
 		}
 
-		for collection := range storeState.Collections[database] {
+		for collection := range r.storeState.Collections[database] {
-			if storeState.Documents[database][collection] == nil {
+			if r.storeState.Documents[database][collection] == nil {
-				storeState.Documents[database][collection] = make(map[string]repositorymodels.Document)
+				r.storeState.Documents[database][collection] = make(map[string]repositorymodels.Document)
 			}
 
-			for document := range storeState.Documents[database][collection] {
+			for document := range r.storeState.Documents[database][collection] {
-				if storeState.Documents[database][collection][document] == nil {
+				if r.storeState.Documents[database][collection][document] == nil {
-					delete(storeState.Documents[database][collection], document)
+					delete(r.storeState.Documents[database][collection], document)
 				}
 			}
 		}

internal/repositories/stored_procedures.go

@@ -2,6 +2,6 @@ package repositories
 
 import repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 
-func GetAllStoredProcedures(databaseId string, collectionId string) ([]repositorymodels.StoredProcedure, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetAllStoredProcedures(databaseId string, collectionId string) ([]repositorymodels.StoredProcedure, repositorymodels.RepositoryStatus) {
-	return storedProcedures, repositorymodels.StatusOk
+	return r.storedProcedures, repositorymodels.StatusOk
 }

internal/repositories/triggers.go

@@ -2,6 +2,6 @@ package repositories
 
 import repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 
-func GetAllTriggers(databaseId string, collectionId string) ([]repositorymodels.Trigger, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetAllTriggers(databaseId string, collectionId string) ([]repositorymodels.Trigger, repositorymodels.RepositoryStatus) {
-	return triggers, repositorymodels.StatusOk
+	return r.triggers, repositorymodels.StatusOk
 }

internal/repositories/user_defined_functions.go

@@ -2,6 +2,6 @@ package repositories
 
 import repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 
-func GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]repositorymodels.UserDefinedFunction, repositorymodels.RepositoryStatus) {
+func (r *DataRepository) GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]repositorymodels.UserDefinedFunction, repositorymodels.RepositoryStatus) {
-	return userDefinedFunctions, repositorymodels.StatusOk
+	return r.userDefinedFunctions, repositorymodels.StatusOk
 }

parsers/nosql/nosql.peg

@@ -325,6 +325,7 @@ DotFieldAccess <- "." id:Identifier {
 
 ArrayFieldAccess <- "[\"" id:Identifier "\"]" { return id, nil }
   / "[" id:Integer "]" { return strconv.Itoa(id.(int)), nil }
+  / "[" id:ParameterConstant "]" { return id.(parsers.Constant).Value.(string), nil }
 
 Identifier <- [a-zA-Z_][a-zA-Z0-9_]* {
     return string(c.text), nil

parsers/nosql/select_test.go

@@ -22,6 +22,20 @@ func Test_Parse_Select(t *testing.T) {
 		)
 	})
 
+	t.Run("Should parse SELECT with query parameters as accessor", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.id, c[@param] FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{Path: []string{"c", "id"}},
+					{Path: []string{"c", "@param"}},
+				},
+				Table: parsers.Table{Value: "c"},
+			},
+		)
+	})
+
 	t.Run("Should parse SELECT DISTINCT", func(t *testing.T) {
 		testQueryParse(
 			t,

query_executors/memory_executor/memory_executor.go

@@ -317,6 +317,10 @@ func (r rowContext) applyProjection(selectItems []parsers.SelectItem) RowType {
 			} else {
 				destinationName = fmt.Sprintf("$%d", index+1)
 			}
+
+			if destinationName[0] == '@' {
+				destinationName = r.parameters[destinationName].(string)
+			}
 		}
 
 		row[destinationName] = r.resolveSelectItem(selectItem)
@@ -572,6 +576,9 @@ func (r rowContext) selectItem_SelectItemTypeField(selectItem parsers.SelectItem
 
 	if len(selectItem.Path) > 1 {
 		for _, pathSegment := range selectItem.Path[1:] {
+			if pathSegment[0] == '@' {
+				pathSegment = r.parameters[pathSegment].(string)
+			}
 
 			switch nestedValue := value.(type) {
 			case map[string]interface{}:

query_executors/memory_executor/select_test.go

@@ -35,6 +35,29 @@ func Test_Execute_Select(t *testing.T) {
 		)
 	})
 
+	t.Run("Should execute SELECT with query parameters as accessor", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{Path: []string{"c", "id"}},
+					{Path: []string{"c", "@param"}},
+				},
+				Table: parsers.Table{Value: "c"},
+				Parameters: map[string]interface{}{
+					"@param": "pk",
+				},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "12345", "pk": 123},
+				map[string]interface{}{"id": "67890", "pk": 456},
+				map[string]interface{}{"id": "456", "pk": 456},
+				map[string]interface{}{"id": "123", "pk": 456},
+			},
+		)
+	})
+
 	t.Run("Should execute SELECT DISTINCT", func(t *testing.T) {
 		testQueryExecute(
 			t,

sharedlibrary/collections.go

@@ -0,0 +1,89 @@
+package main
+
+import "C"
+import (
+	"encoding/json"
+
+	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+)
+
+//export CreateCollection
+func CreateCollection(serverName *C.char, databaseId *C.char, collectionJson *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionStr := C.GoString(collectionJson)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return ResponseServerInstanceNotFound
+	}
+
+	var collection repositorymodels.Collection
+	err := json.Unmarshal([]byte(collectionStr), &collection)
+	if err != nil {
+		return ResponseFailedToParseRequest
+	}
+
+	_, code := serverInstance.repository.CreateCollection(databaseIdStr, collection)
+
+	return repositoryStatusToResponseCode(code)
+}
+
+//export GetCollection
+func GetCollection(serverName *C.char, databaseId *C.char, collectionId *C.char) *C.char {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionIdStr := C.GoString(collectionId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return C.CString("")
+	}
+
+	collection, code := serverInstance.repository.GetCollection(databaseIdStr, collectionIdStr)
+	if code != repositorymodels.StatusOk {
+		return C.CString("")
+	}
+
+	collectionJson, _ := json.Marshal(collection)
+	return C.CString(string(collectionJson))
+}
+
+//export GetAllCollections
+func GetAllCollections(serverName *C.char, databaseId *C.char) *C.char {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return C.CString("")
+	}
+
+	collections, code := serverInstance.repository.GetAllCollections(databaseIdStr)
+	if code != repositorymodels.StatusOk {
+		return C.CString("")
+	}
+
+	collectionsJson, _ := json.Marshal(collections)
+	return C.CString(string(collectionsJson))
+}
+
+//export DeleteCollection
+func DeleteCollection(serverName *C.char, databaseId *C.char, collectionId *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionIdStr := C.GoString(collectionId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return ResponseServerInstanceNotFound
+	}
+
+	code := serverInstance.repository.DeleteCollection(databaseIdStr, collectionIdStr)
+
+	return repositoryStatusToResponseCode(code)
+}

sharedlibrary/databases.go

@@ -0,0 +1,89 @@
+package main
+
+import "C"
+import (
+	"encoding/json"
+
+	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+)
+
+//export CreateDatabase
+func CreateDatabase(serverName *C.char, databaseJson *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	databaseStr := C.GoString(databaseJson)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return ResponseServerInstanceNotFound
+	}
+
+	var database repositorymodels.Database
+	err := json.Unmarshal([]byte(databaseStr), &database)
+	if err != nil {
+		return ResponseFailedToParseRequest
+	}
+
+	_, code := serverInstance.repository.CreateDatabase(database)
+
+	return repositoryStatusToResponseCode(code)
+}
+
+//export GetDatabase
+func GetDatabase(serverName *C.char, databaseId *C.char) *C.char {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return C.CString("")
+	}
+
+	database, code := serverInstance.repository.GetDatabase(databaseIdStr)
+	if code != repositorymodels.StatusOk {
+		return C.CString("")
+	}
+
+	databaseJson, _ := json.Marshal(database)
+	return C.CString(string(databaseJson))
+}
+
+//export GetAllDatabases
+func GetAllDatabases(serverName *C.char) *C.char {
+	serverNameStr := C.GoString(serverName)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return C.CString("")
+	}
+
+	databases, code := serverInstance.repository.GetAllDatabases()
+	if code != repositorymodels.StatusOk {
+		return C.CString("")
+	}
+
+	databasesJson, err := json.Marshal(databases)
+	if err != nil {
+		return C.CString("")
+	}
+
+	return C.CString(string(databasesJson))
+}
+
+//export DeleteDatabase
+func DeleteDatabase(serverName *C.char, databaseId *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return ResponseServerInstanceNotFound
+	}
+
+	code := serverInstance.repository.DeleteDatabase(databaseIdStr)
+
+	return repositoryStatusToResponseCode(code)
+}

sharedlibrary/documents.go

@@ -0,0 +1,122 @@
+package main
+
+import "C"
+import (
+	"encoding/json"
+
+	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+)
+
+//export CreateDocument
+func CreateDocument(serverName *C.char, databaseId *C.char, collectionId *C.char, documentJson *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionIdStr := C.GoString(collectionId)
+	documentStr := C.GoString(documentJson)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return ResponseServerInstanceNotFound
+	}
+
+	var document repositorymodels.Document
+	err := json.Unmarshal([]byte(documentStr), &document)
+	if err != nil {
+		return ResponseFailedToParseRequest
+	}
+
+	_, code := serverInstance.repository.CreateDocument(databaseIdStr, collectionIdStr, document)
+
+	return repositoryStatusToResponseCode(code)
+}
+
+//export GetDocument
+func GetDocument(serverName *C.char, databaseId *C.char, collectionId *C.char, documentId *C.char) *C.char {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionIdStr := C.GoString(collectionId)
+	documentIdStr := C.GoString(documentId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return C.CString("")
+	}
+
+	document, code := serverInstance.repository.GetDocument(databaseIdStr, collectionIdStr, documentIdStr)
+	if code != repositorymodels.StatusOk {
+		return C.CString("")
+	}
+
+	documentJson, _ := json.Marshal(document)
+	return C.CString(string(documentJson))
+}
+
+//export GetAllDocuments
+func GetAllDocuments(serverName *C.char, databaseId *C.char, collectionId *C.char) *C.char {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionIdStr := C.GoString(collectionId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return C.CString("")
+	}
+
+	documents, code := serverInstance.repository.GetAllDocuments(databaseIdStr, collectionIdStr)
+	if code != repositorymodels.StatusOk {
+		return C.CString("")
+	}
+
+	documentsJson, _ := json.Marshal(documents)
+	return C.CString(string(documentsJson))
+}
+
+//export UpdateDocument
+func UpdateDocument(serverName *C.char, databaseId *C.char, collectionId *C.char, documentId *C.char, documentJson *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionIdStr := C.GoString(collectionId)
+	documentIdStr := C.GoString(documentId)
+	documentStr := C.GoString(documentJson)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return ResponseServerInstanceNotFound
+	}
+
+	var document repositorymodels.Document
+	err := json.Unmarshal([]byte(documentStr), &document)
+	if err != nil {
+		return ResponseFailedToParseRequest
+	}
+
+	code := serverInstance.repository.DeleteDocument(databaseIdStr, collectionIdStr, documentIdStr)
+	if code != repositorymodels.StatusOk {
+		return repositoryStatusToResponseCode(code)
+	}
+
+	_, code = serverInstance.repository.CreateDocument(databaseIdStr, collectionIdStr, document)
+	return repositoryStatusToResponseCode(code)
+}
+
+//export DeleteDocument
+func DeleteDocument(serverName *C.char, databaseId *C.char, collectionId *C.char, documentId *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	databaseIdStr := C.GoString(databaseId)
+	collectionIdStr := C.GoString(collectionId)
+	documentIdStr := C.GoString(documentId)
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = getInstance(serverNameStr); !ok {
+		return ResponseServerInstanceNotFound
+	}
+
+	code := serverInstance.repository.DeleteDocument(databaseIdStr, collectionIdStr, documentIdStr)
+
+	return repositoryStatusToResponseCode(code)
+}

sharedlibrary/shared.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"sync"
+
+	"github.com/pikami/cosmium/api"
+	"github.com/pikami/cosmium/internal/repositories"
+	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+)
+
+type ServerInstance struct {
+	server     *api.ApiServer
+	repository *repositories.DataRepository
+}
+
+var serverInstances map[string]*ServerInstance
+var mutex sync.RWMutex
+
+const (
+	ResponseSuccess = 0
+
+	ResponseUnknown                     = 100
+	ResponseFailedToParseConfiguration  = 101
+	ResponseFailedToLoadState           = 102
+	ResponseFailedToParseRequest        = 103
+	ResponseServerInstanceAlreadyExists = 104
+	ResponseServerInstanceNotFound      = 105
+
+	ResponseRepositoryNotFound   = 200
+	ResponseRepositoryConflict   = 201
+	ResponseRepositoryBadRequest = 202
+)
+
+func getInstance(serverName string) (*ServerInstance, bool) {
+	mutex.RLock()
+	defer mutex.RUnlock()
+
+	if serverInstances == nil {
+		serverInstances = make(map[string]*ServerInstance)
+	}
+
+	var ok bool
+	var serverInstance *ServerInstance
+	if serverInstance, ok = serverInstances[serverName]; !ok {
+		return nil, false
+	}
+
+	return serverInstance, true
+}
+
+func addInstance(serverName string, serverInstance *ServerInstance) {
+	mutex.Lock()
+	defer mutex.Unlock()
+
+	if serverInstances == nil {
+		serverInstances = make(map[string]*ServerInstance)
+	}
+
+	serverInstances[serverName] = serverInstance
+}
+
+func removeInstance(serverName string) {
+	mutex.Lock()
+	defer mutex.Unlock()
+
+	if serverInstances == nil {
+		return
+	}
+
+	delete(serverInstances, serverName)
+}
+
+func repositoryStatusToResponseCode(status repositorymodels.RepositoryStatus) int {
+	switch status {
+	case repositorymodels.StatusOk:
+		return ResponseSuccess
+	case repositorymodels.StatusNotFound:
+		return ResponseRepositoryNotFound
+	case repositorymodels.Conflict:
+		return ResponseRepositoryConflict
+	case repositorymodels.BadRequest:
+		return ResponseRepositoryBadRequest
+	default:
+		return ResponseUnknown
+	}
+}

sharedlibrary/sharedlibrary.go

@@ -9,44 +9,82 @@ import (
 	"github.com/pikami/cosmium/internal/repositories"
 )
 
-var currentServer *api.Server
+//export CreateServerInstance
+func CreateServerInstance(serverName *C.char, configurationJSON *C.char) int {
+	configStr := C.GoString(configurationJSON)
+	serverNameStr := C.GoString(serverName)
+
+	if _, ok := getInstance(serverNameStr); ok {
+		return ResponseServerInstanceAlreadyExists
+	}
 
-//export Configure
-func Configure(configurationJSON *C.char) bool {
 	var configuration config.ServerConfig
-	err := json.Unmarshal([]byte(C.GoString(configurationJSON)), &configuration)
+	err := json.Unmarshal([]byte(configStr), &configuration)
 	if err != nil {
-		return false
+		return ResponseFailedToParseConfiguration
 	}
-	config.Config = configuration
+
-	return true
+	configuration.PopulateCalculatedFields()
+	configuration.ApplyDefaultsToEmptyFields()
+
+	repository := repositories.NewDataRepository(repositories.RepositoryOptions{
+		InitialDataFilePath: configuration.InitialDataFilePath,
+		PersistDataFilePath: configuration.PersistDataFilePath,
+	})
+
+	server := api.NewApiServer(repository, configuration)
+	server.Start()
+
+	addInstance(serverNameStr, &ServerInstance{
+		server:     server,
+		repository: repository,
+	})
+
+	return ResponseSuccess
 }
 
-//export InitializeRepository
+//export StopServerInstance
-func InitializeRepository() {
+func StopServerInstance(serverName *C.char) int {
-	repositories.InitializeRepository()
+	serverNameStr := C.GoString(serverName)
-}
 
-//export StartAPI
+	if serverInstance, ok := getInstance(serverNameStr); ok {
-func StartAPI() {
+		serverInstance.server.Stop()
-	currentServer = api.StartAPI()
+		removeInstance(serverNameStr)
-}
+		return ResponseSuccess
-
-//export StopAPI
-func StopAPI() {
-	if currentServer == nil {
-		currentServer.StopServer <- true
-		currentServer = nil
 	}
+
+	return ResponseServerInstanceNotFound
 }
 
-//export GetState
+//export GetServerInstanceState
-func GetState() *C.char {
+func GetServerInstanceState(serverName *C.char) *C.char {
-	stateJSON, err := repositories.GetState()
+	serverNameStr := C.GoString(serverName)
-	if err != nil {
+
-		return nil
+	if serverInstance, ok := getInstance(serverNameStr); ok {
+		stateJSON, err := serverInstance.repository.GetState()
+		if err != nil {
+			return nil
+		}
+		return C.CString(stateJSON)
 	}
-	return C.CString(stateJSON)
+
+	return nil
+}
+
+//export LoadServerInstanceState
+func LoadServerInstanceState(serverName *C.char, stateJSON *C.char) int {
+	serverNameStr := C.GoString(serverName)
+	stateJSONStr := C.GoString(stateJSON)
+
+	if serverInstance, ok := getInstance(serverNameStr); ok {
+		err := serverInstance.repository.LoadStateJSON(stateJSONStr)
+		if err != nil {
+			return ResponseFailedToLoadState
+		}
+		return ResponseSuccess
+	}
+
+	return ResponseServerInstanceNotFound
 }
 
 func main() {}

sharedlibrary/tests/main.c

@@ -0,0 +1,46 @@
+#include "shared.h"
+
+int test_CreateServerInstance();
+int test_StopServerInstance();
+int test_ServerInstanceStateMethods();
+int test_Databases();
+
+int main(int argc, char *argv[])
+{
+    if (argc < 2)
+    {
+        fprintf(stderr, "Usage: %s <path_to_shared_library>\n", argv[0]);
+        return EXIT_FAILURE;
+    }
+
+    const char *libPath = argv[1];
+    handle = dlopen(libPath, RTLD_LAZY);
+    if (!handle)
+    {
+        fprintf(stderr, "Failed to load shared library: %s\n", dlerror());
+        return EXIT_FAILURE;
+    }
+
+    printf("Running tests for library: %s\n", libPath);
+    int results[] = {
+        test_CreateServerInstance(),
+        test_Databases(),
+        test_ServerInstanceStateMethods(),
+        test_StopServerInstance(),
+    };
+
+    int numTests = sizeof(results) / sizeof(results[0]);
+    int numPassed = 0;
+    for (int i = 0; i < numTests; i++)
+    {
+        if (results[i])
+        {
+            numPassed++;
+        }
+    }
+
+    printf("Tests passed: %d/%d\n", numPassed, numTests);
+
+    dlclose(handle);
+    return EXIT_SUCCESS;
+}

sharedlibrary/tests/shared.c

@@ -0,0 +1,36 @@
+#include "shared.h"
+
+void *handle = NULL;
+
+void *load_function(const char *func_name)
+{
+    void *func = dlsym(handle, func_name);
+    if (!func)
+    {
+        fprintf(stderr, "Failed to load function %s: %s\n", func_name, dlerror());
+    }
+    return func;
+}
+
+char *compact_json(const char *json)
+{
+    size_t len = strlen(json);
+    char *compact = (char *)malloc(len + 1);
+    if (!compact)
+    {
+        fprintf(stderr, "Failed to allocate memory for compacted JSON\n");
+        return NULL;
+    }
+
+    char *dest = compact;
+    for (const char *src = json; *src != '\0'; ++src)
+    {
+        if (!isspace((unsigned char)*src)) // Skip spaces, newlines, tabs, etc.
+        {
+            *dest++ = *src;
+        }
+    }
+    *dest = '\0'; // Null-terminate the string
+
+    return compact;
+}

sharedlibrary/tests/shared.h

@@ -0,0 +1,15 @@
+#ifndef SHARED_H
+#define SHARED_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <string.h>
+#include <ctype.h>
+
+extern void *handle;
+
+void *load_function(const char *func_name);
+char *compact_json(const char *json);
+
+#endif

sharedlibrary/tests/test_create.c

@@ -0,0 +1,29 @@
+#include "shared.h"
+
+int test_CreateServerInstance()
+{
+    typedef int (*CreateServerInstanceFn)(char *, char *);
+    CreateServerInstanceFn CreateServerInstance = (CreateServerInstanceFn)load_function("CreateServerInstance");
+
+    if (!CreateServerInstance)
+    {
+        fprintf(stderr, "Failed to find CreateServerInstance function\n");
+        return 0;
+    }
+
+    char *serverName = "TestServer";
+    char *configJSON = "{\"host\":\"localhost\",\"port\":8080}";
+
+    int result = CreateServerInstance(serverName, configJSON);
+    if (result == 0)
+    {
+        printf("CreateServerInstance: SUCCESS\n");
+    }
+    else
+    {
+        printf("CreateServerInstance: FAILED (result = %d)\n", result);
+        return 0;
+    }
+
+    return 1;
+}

sharedlibrary/tests/test_databases.c

@@ -0,0 +1,47 @@
+#include "shared.h"
+
+int test_Databases()
+{
+    typedef int (*CreateDatabaseFn)(char *, char *);
+    CreateDatabaseFn CreateDatabase = (CreateDatabaseFn)load_function("CreateDatabase");
+    if (!CreateDatabase)
+    {
+        fprintf(stderr, "Failed to find CreateDatabase function\n");
+        return 0;
+    }
+
+    char *serverName = "TestServer";
+    char *configJSON = "{\"id\":\"test-db\"}";
+
+    int result = CreateDatabase(serverName, configJSON);
+    if (result == 0)
+    {
+        printf("CreateDatabase: SUCCESS\n");
+    }
+    else
+    {
+        printf("CreateDatabase: FAILED (result = %d)\n", result);
+        return 0;
+    }
+
+    typedef char *(*GetDatabaseFn)(char *, char *);
+    GetDatabaseFn GetDatabase = (GetDatabaseFn)load_function("GetDatabase");
+    if (!GetDatabase)
+    {
+        fprintf(stderr, "Failed to find GetDatabase function\n");
+        return 0;
+    }
+
+    char *database = GetDatabase(serverName, "test-db");
+    if (database)
+    {
+        printf("GetDatabase: SUCCESS (database = %s)\n", database);
+    }
+    else
+    {
+        printf("GetDatabase: FAILED\n");
+        return 0;
+    }
+
+    return 1;
+}

sharedlibrary/tests/test_instance_state.c

@@ -0,0 +1,68 @@
+#include "shared.h"
+
+int test_ServerInstanceStateMethods()
+{
+    typedef int (*LoadServerInstanceStateFn)(char *, char *);
+    LoadServerInstanceStateFn LoadServerInstanceState = (LoadServerInstanceStateFn)load_function("LoadServerInstanceState");
+    if (!LoadServerInstanceState)
+    {
+        fprintf(stderr, "Failed to find LoadServerInstanceState function\n");
+        return 0;
+    }
+
+    char *serverName = "TestServer";
+    char *stateJSON = "{\"databases\":{\"test-db\":{\"id\":\"test-db\"}}}";
+    int result = LoadServerInstanceState(serverName, stateJSON);
+    if (result == 0)
+    {
+        printf("LoadServerInstanceState: SUCCESS\n");
+    }
+    else
+    {
+        printf("LoadServerInstanceState: FAILED (result = %d)\n", result);
+        return 0;
+    }
+
+    typedef char *(*GetServerInstanceStateFn)(char *);
+    GetServerInstanceStateFn GetServerInstanceState = (GetServerInstanceStateFn)load_function("GetServerInstanceState");
+    if (!GetServerInstanceState)
+    {
+        fprintf(stderr, "Failed to find GetServerInstanceState function\n");
+        return 0;
+    }
+
+    char *state = GetServerInstanceState(serverName);
+    if (state)
+    {
+        printf("GetServerInstanceState: SUCCESS (state = %s)\n", state);
+    }
+    else
+    {
+        printf("GetServerInstanceState: FAILED\n");
+        return 0;
+    }
+
+    const char *expected_state = "{\"databases\":{\"test-db\":{\"id\":\"test-db\",\"_ts\":0,\"_rid\":\"\",\"_etag\":\"\",\"_self\":\"\"}},\"collections\":{\"test-db\":{}},\"documents\":{\"test-db\":{}}}";
+    char *compact_state = compact_json(state);
+    if (!compact_state)
+    {
+        free(state);
+        return 0;
+    }
+
+    if (strcmp(compact_state, expected_state) == 0)
+    {
+        printf("GetServerInstanceState: State matches expected value.\n");
+    }
+    else
+    {
+        printf("GetServerInstanceState: State does not match expected value.\n");
+        printf("Expected: %s\n", expected_state);
+        printf("Actual:   %s\n", compact_state);
+        return 0;
+    }
+
+    free(state);
+    free(compact_state);
+    return 1;
+}

sharedlibrary/tests/test_stop.c

@@ -0,0 +1,27 @@
+#include "shared.h"
+
+int test_StopServerInstance()
+{
+    typedef int (*StopServerInstanceFn)(char *);
+    StopServerInstanceFn StopServerInstance = (StopServerInstanceFn)load_function("StopServerInstance");
+
+    if (!StopServerInstance)
+    {
+        fprintf(stderr, "Failed to find StopServerInstance function\n");
+        return 0;
+    }
+
+    char *serverName = "TestServer";
+    int result = StopServerInstance(serverName);
+    if (result == 0)
+    {
+        printf("StopServerInstance: SUCCESS\n");
+    }
+    else
+    {
+        printf("StopServerInstance: FAILED (result = %d)\n", result);
+        return 0;
+    }
+
+    return 1;
+}