import azure.functions as func
import azure.durable_functions as df
def orchestrator_function(context: df.DurableOrchestrationContext):
x = yield context.call_activity("F1", None)
y = yield context.call_activity("F2", x)
z = yield context.call_activity("F3", y)
result = yield context.call_activity("F4", z)
return result
main = df.Orchestrator.create(orchestrator_function)
@FunctionName("Chaining")
public double functionChaining(
@DurableOrchestrationTrigger(name = "ctx") TaskOrchestrationContext ctx) {
String input = ctx.getInput(String.class);
int x = ctx.callActivity("F1", input, int.class).await();
int y = ctx.callActivity("F2", x, int.class).await();
int z = ctx.callActivity("F3", y, int.class).await();
return ctx.callActivity("F4", z, double.class).await();
}
[FunctionName("FanOutFanIn")]
public static async Task Run(
[OrchestrationTrigger] IDurableOrchestrationContext context)
{
var parallelTasks = new List<Task<int>>();
// Get a list of N work items to process in parallel.
object[] workBatch = await context.CallActivityAsync<object[]>("F1", null);
for (int i = 0; i < workBatch.Length; i++)
{
Task<int> task = context.CallActivityAsync<int>("F2", workBatch[i]);
parallelTasks.Add(task);
}
await Task.WhenAll(parallelTasks);
// Aggregate all N outputs and send the result to F3.
int sum = parallelTasks.Sum(t => t.Result);
await context.CallActivityAsync("F3", sum);
}
[Function("FanOutFanIn")]
public static async Task Run(
[OrchestrationTrigger] TaskOrchestrationContext context)
{
var parallelTasks = new List<Task<int>>();
// Get a list of N work items to process in parallel.
object[] workBatch = await context.CallActivityAsync<object[]>("F1", null);
for (int i = 0; i < workBatch.Length; i++)
{
Task<int> task = context.CallActivityAsync<int>("F2", workBatch[i]);
parallelTasks.Add(task);
}
await Task.WhenAll(parallelTasks);
// Aggregate all N outputs and send the result to F3.
int sum = parallelTasks.Sum(t => t.Result);
await context.CallActivityAsync("F3", sum);
}
const df = require("durable-functions");
module.exports = df.orchestrator(function*(context) {
const parallelTasks = [];
// Get a list of N work items to process in parallel.
const workBatch = yield context.df.callActivity("F1");
for (let i = 0; i < workBatch.length; i++) {
parallelTasks.push(context.df.callActivity("F2", workBatch[i]));
}
yield context.df.Task.all(parallelTasks);
// Aggregate all N outputs and send the result to F3.
const sum = parallelTasks.reduce((prev, curr) => prev + curr, 0);
yield context.df.callActivity("F3", sum);
});
const df = require("durable-functions");
df.app.orchestration("fanOutFanInDemo", function* (context) {
const parallelTasks = [];
// Get a list of N work items to process in parallel.
const workBatch = yield context.df.callActivity("F1");
for (let i = 0; i < workBatch.length; i++) {
parallelTasks.push(context.df.callActivity("F2", workBatch[i]));
}
yield context.df.Task.all(parallelTasks);
// Aggregate all N outputs and send the result to F3.
const sum = parallelTasks.reduce((prev, curr) => prev + curr, 0);
yield context.df.callActivity("F3", sum);
});
import azure.durable_functions as df
def orchestrator_function(context: df.DurableOrchestrationContext):
# Get a list of N work items to process in parallel.
work_batch = yield context.call_activity("F1", None)
parallel_tasks = [ context.call_activity("F2", b) for b in work_batch ]
outputs = yield context.task_all(parallel_tasks)
# Aggregate all N outputs and send the result to F3.
total = sum(outputs)
yield context.call_activity("F3", total)
main = df.Orchestrator.create(orchestrator_function)
import azure.functions as func
import azure.durable_functions as df
myApp = df.DFApp(http_auth_level=func.AuthLevel.ANONYMOUS)
@myApp.orchestration_trigger(context_name="context")
def orchestrator_function(context: df.DurableOrchestrationContext):
# Get a list of N work items to process in parallel.
work_batch = yield context.call_activity("F1", None)
parallel_tasks = [ context.call_activity("F2", b) for b in work_batch ]
outputs = yield context.task_all(parallel_tasks)
# Aggregate all N outputs and send the result to F3.
total = sum(outputs)
yield context.call_activity("F3", total)
param($Context)
# Get a list of work items to process in parallel.
$WorkBatch = Invoke-DurableActivity -FunctionName 'F1'
$ParallelTasks =
foreach ($WorkItem in $WorkBatch) {
Invoke-DurableActivity -FunctionName 'F2' -Input $WorkItem -NoWait
}
$Outputs = Wait-ActivityFunction -Task $ParallelTasks
# Aggregate all outputs and send the result to F3.
$Total = ($Outputs | Measure-Object -Sum).Sum
Invoke-DurableActivity -FunctionName 'F3' -Input $Total
@FunctionName("FanOutFanIn")
public Integer fanOutFanInOrchestrator(
@DurableOrchestrationTrigger(name = "ctx") TaskOrchestrationContext ctx) {
// Get the list of work-items to process in parallel
List<?> batch = ctx.callActivity("F1", List.class).await();
// Schedule each task to run in parallel
List<Task<Integer>> parallelTasks = batch.stream()
.map(item -> ctx.callActivity("F2", item, Integer.class))
.collect(Collectors.toList());
// Wait for all tasks to complete, then return the aggregated sum of the results
List<Integer> results = ctx.allOf(parallelTasks).await();
return results.stream().reduce(0, Integer::sum);
}
[FunctionName("MonitorJobStatus")]
public static async Task Run(
[OrchestrationTrigger] IDurableOrchestrationContext context)
{
int jobId = context.GetInput<int>();
int pollingInterval = GetPollingInterval();
DateTime expiryTime = GetExpiryTime();
while (context.CurrentUtcDateTime < expiryTime)
{
var jobStatus = await context.CallActivityAsync<string>("GetJobStatus", jobId);
if (jobStatus == "Completed")
{
// Perform an action when a condition is met.
await context.CallActivityAsync("SendAlert", jobId);
break;
}
// Orchestration sleeps until this time.
var nextCheck = context.CurrentUtcDateTime.AddSeconds(pollingInterval);
await context.CreateTimer(nextCheck, CancellationToken.None);
}
// Perform more work here, or let the orchestration end.
}
[Function("MonitorJobStatus")]
public static async Task Run(
[OrchestrationTrigger] TaskOrchestrationContext context, int jobId)
{
int pollingInterval = GetPollingInterval();
DateTime expiryTime = GetExpiryTime();
while (context.CurrentUtcDateTime < expiryTime)
{
var jobStatus = await context.CallActivityAsync<string>("GetJobStatus", jobId);
if (jobStatus == "Completed")
{
// Perform an action when a condition is met.
await context.CallActivityAsync("SendAlert", jobId);
break;
}
// Orchestration sleeps until this time.
var nextCheck = context.CurrentUtcDateTime.AddSeconds(pollingInterval);
await context.CreateTimer(nextCheck, CancellationToken.None);
}
// Perform more work here, or let the orchestration end.
}
const df = require("durable-functions");
const moment = require("moment");
module.exports = df.orchestrator(function*(context) {
const jobId = context.df.getInput();
const pollingInterval = getPollingInterval();
const expiryTime = getExpiryTime();
while (moment.utc(context.df.currentUtcDateTime).isBefore(expiryTime)) {
const jobStatus = yield context.df.callActivity("GetJobStatus", jobId);
if (jobStatus === "Completed") {
// Perform an action when a condition is met.
yield context.df.callActivity("SendAlert", jobId);
break;
}
// Orchestration sleeps until this time.
const nextCheck = moment.utc(context.df.currentUtcDateTime).add(pollingInterval, 's');
yield context.df.createTimer(nextCheck.toDate());
}
// Perform more work here, or let the orchestration end.
});
const df = require("durable-functions");
const { DateTime } = require("luxon");
df.app.orchestration("monitorDemo", function* (context) {
const jobId = context.df.getInput();
const pollingInterval = getPollingInterval();
const expiryTime = getExpiryTime();
while (DateTime.fromJSDate(context.df.currentUtcDateTime) < DateTime.fromJSDate(expiryTime)) {
const jobStatus = yield context.df.callActivity("GetJobStatus", jobId);
if (jobStatus === "Completed") {
// Perform an action when a condition is met.
yield context.df.callActivity("SendAlert", machineId);
break;
}
// Orchestration sleeps until this time.
const nextCheck = DateTime.fromJSDate(context.df.currentUtcDateTime).plus({
seconds: pollingInterval,
});
yield context.df.createTimer(nextCheck.toJSDate());
}
// Perform more work here, or let the orchestration end.
});
import azure.durable_functions as df
import json
from datetime import timedelta
def orchestrator_function(context: df.DurableOrchestrationContext):
job = json.loads(context.get_input())
job_id = job["jobId"]
polling_interval = job["pollingInterval"]
expiry_time = job["expiryTime"]
while context.current_utc_datetime < expiry_time:
job_status = yield context.call_activity("GetJobStatus", job_id)
if job_status == "Completed":
# Perform an action when a condition is met.
yield context.call_activity("SendAlert", job_id)
break
# Orchestration sleeps until this time.
next_check = context.current_utc_datetime + timedelta(seconds=polling_interval)
yield context.create_timer(next_check)
# Perform more work here, or let the orchestration end.
main = df.Orchestrator.create(orchestrator_function)
import json
from datetime import timedelta
import azure.functions as func
import azure.durable_functions as df
myApp = df.DFApp(http_auth_level=func.AuthLevel.ANONYMOUS)
@myApp.orchestration_trigger(context_name="context")
def orchestrator_function(context: df.DurableOrchestrationContext):
job = json.loads(context.get_input())
job_id = job["jobId"]
polling_interval = job["pollingInterval"]
expiry_time = job["expiryTime"]
while context.current_utc_datetime < expiry_time:
job_status = yield context.call_activity("GetJobStatus", job_id)
if job_status == "Completed":
# Perform an action when a condition is met.
yield context.call_activity("SendAlert", job_id)
break
# Orchestration sleeps until this time.
next_check = context.current_utc_datetime + timedelta(seconds=polling_interval)
yield context.create_timer(next_check)
# Perform more work here, or let the orchestration end.
param($Context)
$output = @()
$jobId = $Context.Input.JobId
$machineId = $Context.Input.MachineId
$pollingInterval = New-TimeSpan -Seconds $Context.Input.PollingInterval
$expiryTime = $Context.Input.ExpiryTime
while ($Context.CurrentUtcDateTime -lt $expiryTime) {
$jobStatus = Invoke-DurableActivity -FunctionName 'GetJobStatus' -Input $jobId
if ($jobStatus -eq "Completed") {
# Perform an action when a condition is met.
$output += Invoke-DurableActivity -FunctionName 'SendAlert' -Input $machineId
break
}
# Orchestration sleeps until this time.
Start-DurableTimer -Duration $pollingInterval
}
# Perform more work here, or let the orchestration end.
$output
@FunctionName("Monitor")
public String monitorOrchestrator(
@DurableOrchestrationTrigger(name = "ctx") TaskOrchestrationContext ctx) {
JobInfo jobInfo = ctx.getInput(JobInfo.class);
String jobId = jobInfo.getJobId();
Instant expiryTime = jobInfo.getExpirationTime();
while (ctx.getCurrentInstant().compareTo(expiryTime) < 0) {
String status = ctx.callActivity("GetJobStatus", jobId, String.class).await();
// Perform an action when a condition is met
if (status.equals("Completed")) {
// send an alert and exit
ctx.callActivity("SendAlert", jobId).await();
break;
}
// wait N minutes before doing the next poll
Duration pollingDelay = jobInfo.getPollingDelay();
ctx.createTimer(pollingDelay).await();
}
return "done";
}
要求が受信されると、そのジョブ ID 用の新しいオーケストレーション インスタンスが作成されます。 インスタンスは、条件が満たされるか、タイムアウトが期限切れになるまで状態をポーリングします。 ポーリング間隔は、永続タイマーによって制御されます。 その後、さらに作業を実行するか、オーケストレーションを終了できます。
public class Counter
{
[JsonProperty("value")]
public int CurrentValue { get; set; }
public void Add(int amount) => this.CurrentValue += amount;
public void Reset() => this.CurrentValue = 0;
public int Get() => this.CurrentValue;
[FunctionName(nameof(Counter))]
public static Task Run([EntityTrigger] IDurableEntityContext ctx)
=> ctx.DispatchAsync<Counter>();
}
[FunctionName("EventHubTriggerCSharp")]
public static async Task Run(
[EventHubTrigger("device-sensor-events")] EventData eventData,
[DurableClient] IDurableEntityClient entityClient)
{
var metricType = (string)eventData.Properties["metric"];
var delta = BitConverter.ToInt32(eventData.Body, eventData.Body.Offset);
// The "Counter/{metricType}" entity is created on-demand.
var entityId = new EntityId("Counter", metricType);
await entityClient.SignalEntityAsync(entityId, "add", delta);
}
