Rename 'MapDS' to 'JsonDS'; Added some docs

internal/datastore/json_datastore/user_defined_functions.go

@@ -0,0 +1,91 @@
+package jsondatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/resourceid"
+	"golang.org/x/exp/maps"
+)
+
+func (r *JsonDataStore) GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	return maps.Values(r.storeState.UserDefinedFunctions[databaseId][collectionId]), datastore.StatusOk
+}
+
+func (r *JsonDataStore) GetUserDefinedFunction(databaseId string, collectionId string, udfId string) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if udf, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udfId]; ok {
+		return udf, datastore.StatusOk
+	}
+
+	return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+}
+
+func (r *JsonDataStore) DeleteUserDefinedFunction(databaseId string, collectionId string, udfId string) datastore.DataStoreStatus {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udfId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	delete(r.storeState.UserDefinedFunctions[databaseId][collectionId], udfId)
+
+	return datastore.StatusOk
+}
+
+func (r *JsonDataStore) CreateUserDefinedFunction(databaseId string, collectionId string, udf datastore.UserDefinedFunction) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	var ok bool
+	var database datastore.Database
+	var collection datastore.Collection
+	if udf.ID == "" {
+		return datastore.UserDefinedFunction{}, datastore.BadRequest
+	}
+
+	if database, ok = r.storeState.Databases[databaseId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udf.ID]; ok {
+		return datastore.UserDefinedFunction{}, datastore.Conflict
+	}
+
+	udf.TimeStamp = time.Now().Unix()
+	udf.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeUserDefinedFunction))
+	udf.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	udf.Self = fmt.Sprintf("dbs/%s/colls/%s/udfs/%s/", database.ResourceID, collection.ResourceID, udf.ResourceID)
+
+	r.storeState.UserDefinedFunctions[databaseId][collectionId][udf.ID] = udf
+
+	return udf, datastore.StatusOk
+}