Suborchestrationen

const df = require("durable-functions");

df.app.orchestration("deviceProvisioningOrchestration", function* (context) {
    const deviceId = context.df.getInput();

    // Step 1: Create an installation package in blob storage and return a SAS URL.
    const sasUrl = yield context.df.callActivity("createInstallationPackage", deviceId);

    // Step 2: Notify the device that the installation package is ready.
    yield context.df.callActivity("sendPackageUrlToDevice", { id: deviceId, url: sasUrl });

    // Step 3: Wait for the device to acknowledge that it has downloaded the new package.
    yield context.df.waitForExternalEvent("downloadCompletedAck");

    // Step 4: ...
});

import azure.functions as func
import azure.durable_functions as df

def orchestrator_function(context: df.DurableOrchestrationContext):
    device_id = context.get_input()

    # Step 1: Create an installation package in blob storage and return a SAS URL.
    sas_url = yield context.call_activity("CreateInstallationPackage", device_id)

    # Step 2: Notify the device that the installation package is ready.
    yield context.call_activity("SendPackageUrlToDevice", { "id": device_id, "url": sas_url })

    # Step 3: Wait for the device to acknowledge that it has downloaded the new package.
    yield context.call_activity("DownloadCompletedAck")

    # Step 4: ...

param($Context)

$deviceId = $Context.Input

# Step 1: Create an installation package in blob storage and return a SAS URL.
$sasUrl = Invoke-DurableActivity -FunctionName "CreateInstallationPackage" -Input $deviceId

# Step 2: Notify the device that the installation package is ready.
$deviceInfo = @{
    id = $deviceId
    url = $sasUrl
}
Invoke-DurableActivity -FunctionName "SendPackageUrlToDevice" -Input $deviceInfo

# Step 3: Wait for the device to acknowledge that it has downloaded the new package.
Start-DurableExternalEventListener -EventName "DownloadCompletedAck"

# Step 4: ...

@FunctionName("DeviceProvisioningOrchestration")
public void deviceProvisioningOrchestration(
        @DurableOrchestrationTrigger(name = "ctx") TaskOrchestrationContext ctx) {
    // Step 1: Create an installation package in blob storage and return a SAS URL.
    String deviceId = ctx.getInput(String.class);
    String blobUri = ctx.callActivity("CreateInstallPackage", deviceId, String.class).await();

    // Step 2: Notify the device that the installation package is ready.
    String[] args = { deviceId, blobUri };
    ctx.callActivity("SendPackageUrlToDevice", args).await();

    // Step 3: Wait for the device to acknowledge that it has downloaded the new package.
    ctx.waitForExternalEvent("DownloadCompletedAck").await();

    // Step 4: ...
}

Durable Functions ondersteunt Go niet. Om Go-voorbeelden te zien, selecteer Durable Task SDKs bovenaan dit artikel.

using Microsoft.DurableTask;

[DurableTask]
public class DeviceProvisioningOrchestration : TaskOrchestrator<string, object?>
{
    public override async Task<object?> RunAsync(TaskOrchestrationContext context, string deviceId)
    {
        // Step 1: Create an installation package in blob storage and return a SAS URL.
        Uri sasUrl = await context.CallActivityAsync<Uri>("CreateInstallationPackage", deviceId);

        // Step 2: Notify the device that the installation package is ready.
        await context.CallActivityAsync("SendPackageUrlToDevice", (deviceId, sasUrl.ToString()));

        // Step 3: Wait for the device to acknowledge that it has downloaded the new package.
        await context.WaitForExternalEvent<bool>("DownloadCompletedAck");

        // Step 4: ...
        return null;
    }
}

import { OrchestrationContext, TOrchestrator } from "@microsoft/durabletask-js";

const deviceProvisioningOrchestrator: TOrchestrator = async function* (
    ctx: OrchestrationContext,
    deviceId: string
): any {
    // Step 1: Create an installation package in blob storage and return a SAS URL.
    const sasUrl: string = yield ctx.callActivity(createInstallationPackage, deviceId);

    // Step 2: Notify the device that the installation package is ready.
    yield ctx.callActivity(sendPackageUrlToDevice, { id: deviceId, url: sasUrl });

    // Step 3: Wait for the device to acknowledge that it has downloaded the new package.
    yield ctx.waitForExternalEvent("DownloadCompletedAck");

    // Step 4: ...
};

from durabletask import task

def device_provisioning_orchestrator(ctx: task.OrchestrationContext, device_id: str):
    # Step 1: Create an installation package in blob storage and return a SAS URL.
    sas_url = yield ctx.call_activity("create_installation_package", input=device_id)

    # Step 2: Notify the device that the installation package is ready.
    yield ctx.call_activity("send_package_url_to_device", input={"id": device_id, "url": sas_url})

    # Step 3: Wait for the device to acknowledge that it has downloaded the new package.
    yield ctx.wait_for_external_event("DownloadCompletedAck")

    # Step 4: ...

Dit voorbeeld wordt weergegeven voor .NET, JavaScript, Java en Python.

import com.microsoft.durabletask.TaskOrchestration;
import com.microsoft.durabletask.TaskOrchestrationContext;

public class DeviceProvisioningOrchestration implements TaskOrchestration {
    @Override
    public void run(TaskOrchestrationContext ctx) {
        String deviceId = ctx.getInput(String.class);

        // Step 1: Create an installation package in blob storage and return a SAS URL.
        String blobUri = ctx.callActivity("CreateInstallPackage", deviceId, String.class).await();

        // Step 2: Notify the device that the installation package is ready.
        String[] args = { deviceId, blobUri };
        ctx.callActivity("SendPackageUrlToDevice", args).await();

        // Step 3: Wait for the device to acknowledge that it has downloaded the new package.
        ctx.waitForExternalEvent("DownloadCompletedAck").await();

        // Step 4: ...
    }
}

Dit voorbeeld is niet beschikbaar voor Go. Voor Go-richtlijnen, zie Develop with the Durable Task SDK for Go.

const df = require("durable-functions");

df.app.orchestration("provisionNewDevices", function* (context) {
    const deviceIds = yield context.df.callActivity("getNewDeviceIds");

    // Run multiple device provisioning flows in parallel
    const provisioningTasks = [];
    var id = 0;
    for (const deviceId of deviceIds) {
        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);

    // ...
});

import azure.functions as func
import azure.durable_functions as df

def orchestrator_function(context: df.DurableOrchestrationContext):

    device_IDs = yield context.call_activity("GetNewDeviceIds")

    # Run multiple device provisioning flows in parallel
    provisioning_tasks = []
    id_ = 0
    for device_id in device_IDs:
        child_id = f"{context.instance_id}:{id_}"
        provision_task = context.call_sub_orchestrator("DeviceProvisioningOrchestration", device_id, child_id)
        provisioning_tasks.append(provision_task)
        id_ += 1

    yield context.task_all(provisioning_tasks)

    # ...

param($Context)

$deviceIds = Invoke-DurableActivity -FunctionName "GetNewDeviceIds"

# Run multiple device setting up flows in parallel
$provisioningTasks = @()
for ($i = 0; $i -lt $deviceIds.Count; $i++) {
    $deviceId = $deviceIds[$i]
    $childId = "$($Context.InstanceId):$i"
    $provisionTask = Invoke-DurableSubOrchestrator `
        -FunctionName "DeviceProvisioningOrchestration" `
        -Input $deviceId `
        -InstanceId $childId `
        -NoWait
    $provisioningTasks += $provisionTask
}

Wait-DurableTask -Task $provisioningTasks

# ...

@FunctionName("ProvisionNewDevices")
public void provisionNewDevices(
        @DurableOrchestrationTrigger(name = "ctx") TaskOrchestrationContext ctx) {
    List<?> deviceIDs = ctx.getInput(List.class);

    // Schedule each device provisioning sub-orchestration to run in parallel
    List<Task<Void>> parallelTasks = deviceIDs.stream()
        .map(device -> ctx.callSubOrchestrator("DeviceProvisioningOrchestration", device))
        .collect(Collectors.toList());

    // ...
}

Durable Functions ondersteunt Go niet. Om Go-voorbeelden te zien, selecteer Durable Task SDKs bovenaan in dit artikel.

using Microsoft.DurableTask;

[DurableTask]
public class ProvisionNewDevices : TaskOrchestrator<object?, object?>
{
    public override async Task<object?> RunAsync(TaskOrchestrationContext context, object? input)
    {
        string[] deviceIds = await context.CallActivityAsync<string[]>("GetNewDeviceIds");

        // Run multiple device provisioning flows in parallel
        var provisioningTasks = new List<Task>();
        foreach (string deviceId in deviceIds)
        {
            Task provisionTask = context.CallSubOrchestratorAsync("DeviceProvisioningOrchestration", deviceId);
            provisioningTasks.Add(provisionTask);
        }

        await Task.WhenAll(provisioningTasks);
        return null;
    }
}

import { OrchestrationContext, TOrchestrator, whenAll } from "@microsoft/durabletask-js";

const provisionNewDevices: TOrchestrator = async function* (ctx: OrchestrationContext): any {
    const deviceIds: string[] = yield ctx.callActivity(getNewDeviceIds);

    // Run multiple device provisioning flows in parallel
    const provisioningTasks = deviceIds.map((deviceId: string) =>
        ctx.callSubOrchestrator(deviceProvisioningOrchestrator, deviceId)
    );

    yield whenAll(provisioningTasks);
};

from durabletask import task

def provision_new_devices(ctx: task.OrchestrationContext, _):
    device_ids = yield ctx.call_activity("get_new_device_ids")

    # Run multiple device provisioning flows in parallel
    provisioning_tasks = []
    for device_id in device_ids:
        provision_task = ctx.call_sub_orchestrator(device_provisioning_orchestrator, input=device_id)
        provisioning_tasks.append(provision_task)

    yield task.when_all(provisioning_tasks)

Dit voorbeeld wordt getoond voor .NET, JavaScript, Java, Python en Go.

import com.microsoft.durabletask.TaskOrchestration;
import com.microsoft.durabletask.TaskOrchestrationContext;

public class ProvisionNewDevices implements TaskOrchestration {
    @Override
    public void run(TaskOrchestrationContext ctx) {
        List<?> deviceIDs = ctx.getInput(List.class);

        // Schedule each device provisioning sub-orchestration to run in parallel
        List<Task<Void>> parallelTasks = deviceIDs.stream()
            .map(device -> ctx.callSubOrchestrator("DeviceProvisioningOrchestration", device))
            .collect(Collectors.toList());

        ctx.allOf(parallelTasks).await();
    }
}

De volgende zelfstandige workflowfuncties tonen de compositie van ouder/kind aan zonder externe apparaatservices. Registreer ze als ParentGreeting en ChildGreeting.

package main

import (
	"fmt"

	"github.com/microsoft/durabletask-go/task"
)

func childGreeting(ctx *task.OrchestrationContext) (any, error) {
	var name string
	if err := ctx.GetInput(&name); err != nil {
		return nil, err
	}
	return fmt.Sprintf("Hello %s!", name), nil
}

func parentGreeting(ctx *task.OrchestrationContext) (any, error) {
	var names []string
	if err := ctx.GetInput(&names); err != nil {
		return nil, err
	}
	pending := make([]task.Task, len(names))
	for i, name := range names {
		pending[i] = ctx.CallSubOrchestrator(
			"ChildGreeting", task.WithSubOrchestratorInput(name))
	}
	if err := ctx.WhenAll(pending...); err != nil {
		return nil, err
	}
	results := make([]string, len(pending))
	for i, child := range pending {
		if err := child.Await(&results[i]); err != nil {
			return nil, err
		}
	}
	return results, nil
}

Plan alle onderliggende processen voordat je wacht om ze parallel uit te voeren. De resultaten blijven in invoervolgorde. Voor kindresultaten, instance ID's, metadata en fouten, zie het voorbeeld van Go SDK sub-orchestraties.