Merge pull request #37278 from olivoarroba/patch-4

Added a defined instance id to JS subOrchestration

Author: ktoliver

articles/azure-functions/durable/durable-functions-sub-orchestrations.md

@@ -17,7 +17,10 @@ In addition to calling activity functions, orchestrator functions can call other
 
 An orchestrator function can call another orchestrator function by calling the [CallSubOrchestratorAsync](https://azure.github.io/azure-functions-durable-extension/api/Microsoft.Azure.WebJobs.DurableOrchestrationContext.html#Microsoft_Azure_WebJobs_DurableOrchestrationContext_CallSubOrchestratorAsync_) or the [CallSubOrchestratorWithRetryAsync](https://azure.github.io/azure-functions-durable-extension/api/Microsoft.Azure.WebJobs.DurableOrchestrationContext.html#Microsoft_Azure_WebJobs_DurableOrchestrationContext_CallSubOrchestratorWithRetryAsync_) methods in .NET, or the `callSubOrchestrator` or `callSubOrchestratorWithRetry` methods in JavaScript. The [Error Handling & Compensation](durable-functions-error-handling.md#automatic-retry-on-failure) article has more information on automatic retry.
 
-Sub-orchestrator functions behave just like activity functions from the caller's perspective. They can return a value, throw an exception, and can be awaited by the parent orchestrator function.
+Sub-orchestrator functions behave just like activity functions from the caller's perspective. They can return a value, throw an exception, and can be awaited by the parent orchestrator function. 
+
+> [!NOTE]
+> Currently, it's necessary to provide an `instanceId` argument value to the subOrchestration API in JavaScript.
 
 ## Example
 
@@ -102,9 +105,12 @@ module.exports = df.orchestrator(function*(context) {
 
     // Run multiple device provisioning flows in parallel
     const provisioningTasks = [];
+    var id = 0;
     for (const deviceId of deviceIds) {
-        const provisionTask = context.df.callSubOrchestrator("DeviceProvisioningOrchestration", deviceId);
+        const child_id = context.df.instanceId+`:${id}`;
+        const provisionTask = context.df.callSubOrchestrator("DeviceProvisioningOrchestration", deviceId, child_id);
         provisioningTasks.push(provisionTask);
+        id++;
     }
 
     yield context.df.Task.all(provisioningTasks);