Debounce scheduling calculating items cost

packages/server/src/services/Inventory/Inventory.ts

@@ -139,24 +139,26 @@ export default class InventoryService {
   ) {
     const agenda = Container.get('agenda');
 
+    const commonJobsQuery = {
+      name: 'compute-item-cost',
+      lastRunAt: { $exists: false },
+      'data.tenantId': tenantId,
+      'data.itemId': itemId,
+    };
     // Cancel any `compute-item-cost` in the queue has upper starting date
     // with the same given item.
     await agenda.cancel({
-      name: 'compute-item-cost',
-      nextRunAt: { $ne: null },
-      'data.tenantId': tenantId,
-      'data.itemId': itemId,
-      'data.startingDate': { $gt: startingDate },
+      ...commonJobsQuery,
+      'data.startingDate': { $lte: startingDate },
     });
     // Retrieve any `compute-item-cost` in the queue has lower starting date
     // with the same given item.
     const dependsJobs = await agenda.jobs({
-      name: 'compute-item-cost',
-      nextRunAt: { $ne: null },
-      'data.tenantId': tenantId,
-      'data.itemId': itemId,
-      'data.startingDate': { $lte: startingDate },
+      ...commonJobsQuery,
+      'data.startingDate': { $gte: startingDate },
     });
+
+    // If the depends jobs cleared.
     if (dependsJobs.length === 0) {
       await agenda.schedule(
         config.scheduleComputeItemCost,

packages/server/src/services/Sales/Invoices/SalesInvoicesCost.ts

@@ -1,3 +1,4 @@
+import { Mutex } from 'async-mutex';
 import { Container, Service, Inject } from 'typedi';
 import { chain } from 'lodash';
 import moment from 'moment';
@@ -34,17 +35,26 @@ export class SaleInvoicesCost {
     inventoryItemsIds: number[],
     startingDate: Date
   ): Promise<void> {
-    const asyncOpers: Promise<[]>[] = [];
+    const mutex = new Mutex();
 
-    inventoryItemsIds.forEach((inventoryItemId: number) => {
-      const oper: Promise<[]> = this.inventoryService.scheduleComputeItemCost(
-        tenantId,
-        inventoryItemId,
-        startingDate
-      );
-      asyncOpers.push(oper);
-    });
-    await Promise.all([...asyncOpers]);
+    const asyncOpers = inventoryItemsIds.map(
+      async (inventoryItemId: number) => {
+        // @todo refactor the lock acquire to be distrbuted using Redis
+        // and run the cost schedule job after running invoice transaction.
+        const release = await mutex.acquire();
+
+        try {
+          await this.inventoryService.scheduleComputeItemCost(
+            tenantId,
+            inventoryItemId,
+            startingDate
+          );
+        } finally {
+          release();
+        }
+      }
+    );
+    await Promise.all(asyncOpers);
   }
 
   /**
@@ -86,17 +96,22 @@ export class SaleInvoicesCost {
     tenantId: number,
     inventoryTransactions: IInventoryTransaction[]
   ) {
-    const asyncOpers: Promise<[]>[] = [];
+    const mutex = new Mutex();
     const reducedTransactions = this.getMaxDateInventoryTransactions(
       inventoryTransactions
     );
-    reducedTransactions.forEach((transaction) => {
-      const oper: Promise<[]> = this.inventoryService.scheduleComputeItemCost(
-        tenantId,
-        transaction.itemId,
-        transaction.date
-      );
-      asyncOpers.push(oper);
+    const asyncOpers = reducedTransactions.map(async (transaction) => {
+      const release = await mutex.acquire();
+
+      try {
+        await this.inventoryService.scheduleComputeItemCost(
+          tenantId,
+          transaction.itemId,
+          transaction.date
+        );
+      } finally {
+        release();
+      }
     });
     await Promise.all([...asyncOpers]);
   }