♻️Removed cumulative queries to the database

First step to the transactions in PostgreSQL

tdrive/backend/node/src/core/platform/services/database/api.ts

@@ -11,7 +11,7 @@ export interface DatabaseServiceAPI extends TdriveServiceProvider {
   getConnector(): Connector;
 
   /**
-   * Get entities manager (TODO: Find a better name...)
+   * Get entities manager
    */
   getManager(): Manager<unknown>;
 

tdrive/backend/node/src/core/platform/services/database/services/orm/manager.ts

@@ -1,5 +1,4 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
-/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import _ from "lodash";
 import { Connector } from "./connectors";
 import { getEntityDefinition, unwrapPrimarykey } from "./utils";
@@ -9,13 +8,9 @@ import { DatabaseEntitiesRemovedEvent, DatabaseEntitiesSavedEvent } from "./type
 import { localEventBus } from "../../../../framework/event-bus";
 
 export default class EntityManager<EntityType extends Record<string, any>> {
-  private toInsert: EntityType[] = [];
-  private toUpdate: EntityType[] = [];
-  private toRemove: EntityType[] = [];
-
   constructor(readonly connector: Connector) {}
 
-  public persist(entity: any): this {
+  public async persist(entity: any): Promise<this> {
     logger.trace(
       `services.database.orm.entity-manager.persist - entity: ${JSON.stringify(entity)}`,
     );
@@ -62,18 +57,20 @@ export default class EntityManager<EntityType extends Record<string, any>> {
       }
     });
 
+    entity = _.cloneDeep(entity);
     if (emptyPkFields.length > 0) {
-      this.toInsert = this.toInsert.filter(e => e !== entity);
-      this.toInsert.push(_.cloneDeep(entity));
+      await this.connector.upsert([entity], { action: "INSERT" });
     } else {
-      this.toUpdate = this.toUpdate.filter(e => e !== entity);
-      this.toUpdate.push(_.cloneDeep(entity));
+      await this.connector.upsert([entity], { action: "UPDATE" });
     }
+    localEventBus.publish("database:entities:saved", {
+      entities: [entity],
+    } as DatabaseEntitiesSavedEvent);
 
     return this;
   }
 
-  public remove(entity: EntityType, entityType?: EntityType): this {
+  public async remove(entity: EntityType, entityType?: EntityType): Promise<this> {
     if (entityType) {
       // eslint-disable-next-line @typescript-eslint/no-explicit-any
       entity = _.merge(new (entityType as any)(), entity);
@@ -81,45 +78,13 @@ export default class EntityManager<EntityType extends Record<string, any>> {
     if (!entity.constructor.prototype._entity || !entity.constructor.prototype._columns) {
       throw Error("Cannot remove this object: it is not an entity.");
     }
-    this.toRemove = this.toRemove.filter(e => e !== entity);
-    this.toRemove.push(_.cloneDeep(entity));
 
-    return this;
-  }
-
-  public async flush(): Promise<this> {
-    this.toInsert = _.uniqWith(this.toInsert, _.isEqual);
-    this.toUpdate = _.uniqWith(this.toUpdate, _.isEqual);
-    this.toRemove = _.uniqWith(this.toRemove, _.isEqual);
+    await this.connector.remove([entity]);
 
     localEventBus.publish("database:entities:saved", {
-      entities: this.toInsert.map(e => _.cloneDeep(e)),
-    } as DatabaseEntitiesSavedEvent);
-
-    localEventBus.publish("database:entities:saved", {
-      entities: this.toUpdate.map(e => _.cloneDeep(e)),
-    } as DatabaseEntitiesSavedEvent);
-
-    localEventBus.publish("database:entities:saved", {
-      entities: this.toRemove.map(e => _.cloneDeep(e)),
+      entities: [entity],
     } as DatabaseEntitiesRemovedEvent);
 
-    if (this.toInsert.length > 0) {
-      await this.connector.upsert(this.toInsert, { action: "INSERT" });
-    }
-    if (this.toUpdate.length > 0) {
-      await this.connector.upsert(this.toUpdate, { action: "UPDATE" });
-    }
-    if (this.toRemove.length > 0) {
-      await this.connector.remove(this.toRemove);
-    }
-
     return this;
   }
-
-  public reset(): void {
-    this.toInsert = [];
-    this.toUpdate = [];
-    this.toRemove = [];
-  }
 }

tdrive/backend/node/src/core/platform/services/database/services/orm/repository/repository.ts

@@ -135,25 +135,20 @@ export default class Repository<EntityType> {
   }> {
     if (previousValue === newValue)
       throw new Error(`Previous and new values are identical: ${JSON.stringify(previousValue)}`);
-    await this.manager.flush().then(manager => manager.reset());
     return this.connector.atomicCompareAndSet(entity, fieldName, previousValue, newValue);
   }
 
   async save(entity: EntityType, _context?: ExecutionContext): Promise<void> {
-    this.manager.persist(entity);
-    return this.manager.flush().then(manager => manager.reset());
+    await this.manager.persist(entity);
   }
 
   async saveAll(entities: EntityType[] = [], _context?: ExecutionContext): Promise<void> {
     logger.debug("services.database.repository - Saving entities");
-
-    entities.forEach(entity => this.manager.persist(entity));
-    return this.manager.flush().then(manager => manager.reset());
+    await Promise.all(entities.map(entity => this.manager.persist(entity)));
   }
 
   async remove(entity: EntityType, _context?: ExecutionContext): Promise<void> {
-    this.manager.remove(entity);
-    return this.manager.flush().then(manager => manager.reset());
+    await this.manager.remove(entity);
   }
 
   //Avoid using this except when no choice

tdrive/backend/node/test/unit/core/services/database/services/orm/manager.test.ts

@@ -9,50 +9,46 @@ import WorkspaceUser, { getInstance } from "../../../../../../../src/services/wo
 
 describe('EntityManager', () => {
 
-  const subj: EntityManager<TestDbEntity> = new EntityManager<TestDbEntity>({ } as Connector);
+  let connector = { upsert: () => void 0};
+  const subj: EntityManager<TestDbEntity> = new EntityManager<TestDbEntity>(connector as unknown as Connector);
+  let upsert;
 
   beforeEach(async () => {
+    upsert = jest.spyOn((subj as any).connector, "upsert");
   });
 
   afterEach(() => {
     jest.clearAllMocks();
-    subj.reset();
   });
 
   test ("persist should store entity to insert if all fields for pk is empty", () => {
     //when
-    subj.persist(new TestDbEntity());
+    let entity = new TestDbEntity();
+    subj.persist(entity);
 
     //then
-    expect((subj as any).toInsert.length).toEqual(1);
-    expect((subj as any).toUpdate.length).toEqual(0);
-    expect((subj as any).toRemove.length).toEqual(0);
-    expect((subj as any).toInsert[0].id).toBeDefined();
-    expect((subj as any).toInsert[0].company_id).toBeDefined();
+    expect(upsert).toBeCalledTimes(1);
+    expect(upsert).toBeCalledWith([entity], {"action": "INSERT"})
   });
 
   test ("persist should store entity to insert if id is set", () => {
     //when
-    subj.persist(new TestDbEntity({id: randomUUID()}));
+    let entity = new TestDbEntity({id: randomUUID()});
+    subj.persist(entity);
 
     //then
-    expect((subj as any).toInsert.length).toEqual(1);
-    expect((subj as any).toUpdate.length).toEqual(0);
-    expect((subj as any).toRemove.length).toEqual(0);
-    expect((subj as any).toInsert[0].id).toBeDefined();
-    expect((subj as any).toInsert[0].company_id).toBeDefined();
+    expect(upsert).toBeCalledTimes(1);
+    expect(upsert).toBeCalledWith([entity], {"action": "INSERT"})
   });
 
   test ("persist should store entity to insert if company_id is set", () => {
     //when
-    subj.persist(new TestDbEntity({company_id: randomUUID()}));
+    let entity = new TestDbEntity({company_id: randomUUID()});
+    subj.persist(entity);
 
     //then
-    expect((subj as any).toInsert.length).toEqual(1);
-    expect((subj as any).toUpdate.length).toEqual(0);
-    expect((subj as any).toRemove.length).toEqual(0);
-    expect((subj as any).toInsert[0].id).toBeDefined();
-    expect((subj as any).toInsert[0].company_id).toBeDefined();
+    expect(upsert).toBeCalledTimes(1);
+    expect(upsert).toBeCalledWith([entity], {"action": "INSERT"})
   });
 
   test ("persist should store entity to update if all pk fields are set", () => {
@@ -61,10 +57,8 @@ describe('EntityManager', () => {
     subj.persist(entity);
 
     //then
-    expect((subj as any).toUpdate.length).toEqual(1);
-    expect((subj as any).toInsert.length).toEqual(0);
-    expect((subj as any).toRemove.length).toEqual(0);
-    expect((subj as any).toUpdate[0]).toEqual(entity)
+    expect(upsert).toBeCalledTimes(1);
+    expect(upsert).toBeCalledWith([entity], {"action": "UPDATE"})
   });
 
   test ("persist should store entity to update if all pk fields are set and column name is different from field name", () => {
@@ -73,10 +67,8 @@ describe('EntityManager', () => {
     subj.persist(entity);
 
     //then
-    expect((subj as any).toUpdate.length).toEqual(1);
-    expect((subj as any).toInsert.length).toEqual(0);
-    expect((subj as any).toRemove.length).toEqual(0);
-    expect((subj as any).toUpdate[0]).toEqual(entity)
+    expect(upsert).toBeCalledTimes(1)
+    expect(upsert).toBeCalledWith([entity], {"action": "UPDATE"})
   });
 
   test ("persist should store entity to insert if not all pk fields are set and column name is different from field name", () => {
@@ -85,11 +77,7 @@ describe('EntityManager', () => {
     subj.persist(entity);
 
     //then
-    expect((subj as any).toUpdate.length).toEqual(0);
-    expect((subj as any).toInsert.length).toEqual(1);
-    expect((subj as any).toRemove.length).toEqual(0);
-    expect((subj as any).toInsert[0]).toEqual(entity);
-    expect(entity.userId).toBeDefined();
+    expect(upsert).toBeCalledWith([entity], {"action": "INSERT"})
   });
 
 });