feat(medusa/product-export-strategy): Implement the Product export strategy (#1688)

packages/medusa/src/subscribers/batch-job.ts

@@ -0,0 +1,57 @@
+import BatchJobService from "../services/batch-job"
+import EventBusService from "../services/event-bus"
+import { StrategyResolverService } from "../services"
+
+type InjectedDependencies = {
+  eventBusService: EventBusService
+  batchJobService: BatchJobService
+  strategyResolverService: StrategyResolverService
+}
+
+class BatchJobSubscriber {
+  private readonly eventBusService_: EventBusService
+  private readonly batchJobService_: BatchJobService
+  private readonly strategyResolver_: StrategyResolverService
+
+  constructor({
+    eventBusService,
+    batchJobService,
+    strategyResolverService,
+  }: InjectedDependencies) {
+    this.eventBusService_ = eventBusService
+    this.batchJobService_ = batchJobService
+    this.strategyResolver_ = strategyResolverService
+
+    this.eventBusService_
+      .subscribe(BatchJobService.Events.CREATED, this.preProcessBatchJob)
+      .subscribe(BatchJobService.Events.CONFIRMED, this.processBatchJob)
+  }
+
+  preProcessBatchJob = async (data): Promise<void> => {
+    const batchJob = await this.batchJobService_.retrieve(data.id)
+
+    const batchJobStrategy = this.strategyResolver_.resolveBatchJobByType(
+      batchJob.type
+    )
+
+    await batchJobStrategy.preProcessBatchJob(batchJob.id)
+
+    await this.batchJobService_.setPreProcessingDone(batchJob.id)
+  }
+
+  processBatchJob = async (data): Promise<void> => {
+    const batchJob = await this.batchJobService_.retrieve(data.id)
+
+    const batchJobStrategy = this.strategyResolver_.resolveBatchJobByType(
+      batchJob.type
+    )
+
+    await this.batchJobService_.setProcessing(batchJob.id)
+
+    await batchJobStrategy.processJob(batchJob.id)
+
+    await this.batchJobService_.complete(batchJob.id)
+  }
+}
+
+export default BatchJobSubscriber