サーバーレスの常識を覆す Azure Durable Functionsを使い倒す
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https://serverless.connpass.com/event/95334/
![19
[FunctionName("F1")]
public static async Task<HttpResponseMessage> HttpStart(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", "post")]HttpRequestMessage req,
[OrchestrationClient]DurableOrchestrationClient starter,
ILogger log)
{
string instanceId = await starter.StartNewAsync("F2", null);
log.LogInformation($"Started orchestration with ID = '{instanceId}'.");
return starter.CreateCheckStatusResponse(req, instanceId);
}
[FunctionName("F2")]
public static async Task<List<string>> RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
var outputs = new List<string>();
outputs.Add(await context.CallActivityAsync<string>("F3", "Tokyo"));
outputs.Add(await context.CallActivityAsync<string>("F3", "Osaka"));
outputs.Add(await context.CallActivityAsync<string>("F3", "Fukuoka"));
return outputs;
}
[FunctionName("F3")]
public static string SayHello([ActivityTrigger] string name, ILogger log)
{
log.LogInformation($"Saying hello to {name}.");
return $"Hello {name}!";
}
クライアント関数
オーケストレーター関数
アクティビティ関数](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-19-320.jpg)
![statusQueryGetUri (完了)
26
{
"instanceId": "2b729f0beb2c44358a9f1c2a75197322",
"runtimeStatus": "Completed",
"input": null,
"customStatus": null,
"output": [
"Hello Tokyo!", "Hello Seattle!", "Hello London!"
],
"createdTime": "2018-08-15T20:58:47Z",
"lastUpdatedTime": "2018-08-15T20:59:01Z"
}](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-26-320.jpg)
![29
[FunctionName("Approval_Run")]
public static async Task RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
bool approved = await context.WaitForExternalEvent<bool>("Approval");
if (approved) { /* approval granted */ }
else { /* approval denied */ }
}
[FunctionName("Approval_Request")]
public static async Task RequestApproval(
[QueueTrigger("approval-queue")] string instanceId,
[OrchestrationClient]DurableOrchestrationClient client)
{
await client.RaiseEventAsync(instanceId, "Approval", true);
}
オーケストレーター関数
外部イベント関数](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-29-320.jpg)
![30
[FunctionName("Approval_Run")]
public static async Task RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
bool approved = await context.WaitForExternalEvent<bool>("Approval");
if (approved) { /* approval granted */ }
else { /* approval denied */ }
}
[FunctionName("Approval_Request")]
public static async Task RequestApproval(
[QueueTrigger("approval-queue")] string instanceId,
[OrchestrationClient]DurableOrchestrationClient client)
{
await client.RaiseEventAsync(instanceId, "Approval", true);
}
ここで処理が止まり
“Approval”という
イベント呼出しを待つ](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-30-320.jpg)
![31
[FunctionName("Approval_Run")]
public static async Task RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
bool approved = await context.WaitForExternalEvent<bool>("Approval");
if (approved) { /* approval granted */ }
else { /* approval denied */ }
}
[FunctionName("Approval_Request")]
public static async Task RequestApproval(
[QueueTrigger("approval-queue")] string instanceId,
[OrchestrationClient]DurableOrchestrationClient client)
{
await client.RaiseEventAsync(instanceId, "Approval", true);
}
キューにインスタンスID
をセットする](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-31-320.jpg)
![32
[FunctionName("Approval_Run")]
public static async Task RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
bool approved = await context.WaitForExternalEvent<bool>("Approval");
if (approved) { /* approval granted */ }
else { /* approval denied */ }
}
[FunctionName("Approval_Request")]
public static async Task RequestApproval(
[QueueTrigger("approval-queue")] string instanceId,
[OrchestrationClient]DurableOrchestrationClient client)
{
await client.RaiseEventAsync(instanceId, "Approval", true);
}
指定したインスタンスIDの
“Approval”イベントを呼出す](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-32-320.jpg)
![33
[FunctionName("Approval_Run")]
public static async Task RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
bool approved = await context.WaitForExternalEvent<bool>("Approval");
if (approved) { /* approval granted */ }
else { /* approval denied */ }
}
[FunctionName("Approval_Request")]
public static async Task RequestApproval(
[QueueTrigger("approval-queue")] string instanceId,
[OrchestrationClient]DurableOrchestrationClient client)
{
await client.RaiseEventAsync(instanceId, "Approval", true);
}
イベントの結果を受けて
後続の処理を実行](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-33-320.jpg)
![34
[FunctionName("Approval_Run")]
public static async Task RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
bool approved = await context.WaitForExternalEvent<bool>("Approval");
if (approved) { /* approval granted */ }
else { /* approval denied */ }
}
[FunctionName("Approval_Request")]
public static async Task RequestApproval(
[QueueTrigger("approval-queue")] string instanceId,
[OrchestrationClient]DurableOrchestrationClient client)
{
await client.RaiseEventAsync(instanceId, "Approval", true);
}
文字列やオブジェクトを
渡すことも可能](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-34-320.jpg)
![36
[FunctionName("Approval_Run")]
public static async Task RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
bool approved = await context.WaitForExternalEvent<bool>("Approval");
if (approved) { /* approval granted */ }
else { /* approval denied */ }
}
ここで処理が止まり
“Approval”という
イベント呼出しを待つ
待機中の時間(＝イベントが呼び出されるまで)は課金対象になる？
課金対象にならない](https://image.slidesharecdn.com/slide-slideshare-180822122123/85/Azure-Durable-Functions-36-320.jpg)
サーバーレスの常識を覆す Azure Durable Functionsを使い倒す
- 1. サーバーレスの常識を覆す Azure Durable Functionsを使い倒す 2018/08/22 Serverless Meetup Fukuoka #2 @tsubakimoto_s
- 2. 松村優大 (MLBお兄さん) • 株式会社オルターブース • Microsoft MVP (Developer Technologies) • C#/PHP/Azure/AWS • 島根県出身 3031歳 2
- 3. 本日の内容 • Serverless Services on Microsoft Azure • Azure Durable Functions • デモ 3
- 4. Serverless Services on Microsoft Azure https://azure.microsoft.com/ja-jp/overview/serverless-computing/ https://azure.microsoft.com/ja-jp/campaigns/serverless/ 4
- 7. 7 Platform as a Service アプリケーション コード ロジック トリガー
- 9. Language Runtime v1.x Runtime v2.x C# GA Preview Node.js GA Preview F# GA - Java - Preview Python Experimental - PHP Experimental - TypeScript Experimental - .cmd, .bat Experimental - Bash Experimental - PowerShell Experimental - 9
- 10. Language Runtime v1.x Runtime v2.x C# GA Preview Node.js GA Preview F# GA - Java - Preview Python Experimental - PHP Experimental - TypeScript Experimental - .cmd, .bat Experimental - Bash Experimental - PowerShell Experimental - 10 仕様変更もある
- 12. Azure Durable Functions The primary use case for Durable Functions is simplifying complex, stateful coordination problems in serverless applications. 12 【de:code 2018】AD02 Serverless の世界を進化させるイノベーション - Durable Functions https://youtu.be/QuXO5plBiFM
- 13. Visual Studio • Visual Studio 15.3~ • Azure開発のワークロード • Azure Storage Emulator • 拡張機能 Microsoft.Azure.WebJobs.Extensions.DurableTask • C#での開発に適している 13https://docs.microsoft.com/ja-jp/azure/azure-functions/durable-functions-install
- 14. Visual Studio Code • Azure Functions Core Tools 2.x • Azure Storage Emulator • 拡張機能 Microsoft.Azure.WebJobs.Extensions.DurableTask • C#, Node.jsでの開発に適している 14https://docs.microsoft.com/ja-jp/azure/azure-functions/durable-functions-install
- 15. Durable Functions Pattern 1. 関数チェーン 2. ファンアウト／ファンイン 3. 非同期のHTTP API 4. 監視 5. 人による操作 15https://docs.microsoft.com/ja-jp/azure/azure-functions/durable-functions-overview
- 18. Durable Functionsの仕組み • クライアント関数(OrchestrationClientAttribute) • 関数全体の実行トリガーとなる • オーケストレーター関数(OrchestrationTriggerAttribute) • アクティビティ関数を呼出し、結果の受取を行う • アクティビティ関数(ActivityTriggerAttribute) • 実際の処理を行う作業単位 18
- 19. 19 [FunctionName("F1")] public static async Task<HttpResponseMessage> HttpStart( [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post")]HttpRequestMessage req, [OrchestrationClient]DurableOrchestrationClient starter, ILogger log) { string instanceId = await starter.StartNewAsync("F2", null); log.LogInformation($"Started orchestration with ID = '{instanceId}'."); return starter.CreateCheckStatusResponse(req, instanceId); } [FunctionName("F2")] public static async Task<List<string>> RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { var outputs = new List<string>(); outputs.Add(await context.CallActivityAsync<string>("F3", "Tokyo")); outputs.Add(await context.CallActivityAsync<string>("F3", "Osaka")); outputs.Add(await context.CallActivityAsync<string>("F3", "Fukuoka")); return outputs; } [FunctionName("F3")] public static string SayHello([ActivityTrigger] string name, ILogger log) { log.LogInformation($"Saying hello to {name}."); return $"Hello {name}!"; } クライアント関数 オーケストレーター関数 アクティビティ関数
- 21. パターン3 : 非同期のHTTP API 21 長時間実行する関数の“状態”を取得する ためのAPIを公開する。
- 22. Durable FunctionsのAPIレスポンス(JSON) 項目 説明 id オーケストレーションインスタンス の ID statusQueryGetUri オーケストレーションインスタンス の状態を取得するURL sendEventPostUri オーケストレーションインスタンス のイベントを発生させるURL terminatePostUri オーケストレーションインスタンス を終了させるURL 22
- 24. statusQueryGetUri (待機中) 24 { "instanceId": "2b729f0beb2c44358a9f1c2a75197322", "runtimeStatus": "Pending", "input": null, "customStatus": null, "output": null, "createdTime": "2018-08-15T20:58:47Z", "lastUpdatedTime": "2018-08-15T20:58:47Z" }
- 25. statusQueryGetUri (実行中) 25 { "instanceId": "2b729f0beb2c44358a9f1c2a75197322", "runtimeStatus": "Running", "input": null, "customStatus": null, "output": null, "createdTime": "2018-08-15T20:58:47Z", "lastUpdatedTime": "2018-08-15T20:58:48Z" }
- 26. statusQueryGetUri (完了) 26 { "instanceId": "2b729f0beb2c44358a9f1c2a75197322", "runtimeStatus": "Completed", "input": null, "customStatus": null, "output": [ "Hello Tokyo!", "Hello Seattle!", "Hello London!" ], "createdTime": "2018-08-15T20:58:47Z", "lastUpdatedTime": "2018-08-15T20:59:01Z" }
- 29. 29 [FunctionName("Approval_Run")] public static async Task RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { bool approved = await context.WaitForExternalEvent<bool>("Approval"); if (approved) { /* approval granted */ } else { /* approval denied */ } } [FunctionName("Approval_Request")] public static async Task RequestApproval( [QueueTrigger("approval-queue")] string instanceId, [OrchestrationClient]DurableOrchestrationClient client) { await client.RaiseEventAsync(instanceId, "Approval", true); } オーケストレーター関数 外部イベント関数
- 30. 30 [FunctionName("Approval_Run")] public static async Task RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { bool approved = await context.WaitForExternalEvent<bool>("Approval"); if (approved) { /* approval granted */ } else { /* approval denied */ } } [FunctionName("Approval_Request")] public static async Task RequestApproval( [QueueTrigger("approval-queue")] string instanceId, [OrchestrationClient]DurableOrchestrationClient client) { await client.RaiseEventAsync(instanceId, "Approval", true); } ここで処理が止まり “Approval”という イベント呼出しを待つ
- 31. 31 [FunctionName("Approval_Run")] public static async Task RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { bool approved = await context.WaitForExternalEvent<bool>("Approval"); if (approved) { /* approval granted */ } else { /* approval denied */ } } [FunctionName("Approval_Request")] public static async Task RequestApproval( [QueueTrigger("approval-queue")] string instanceId, [OrchestrationClient]DurableOrchestrationClient client) { await client.RaiseEventAsync(instanceId, "Approval", true); } キューにインスタンスID をセットする
- 32. 32 [FunctionName("Approval_Run")] public static async Task RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { bool approved = await context.WaitForExternalEvent<bool>("Approval"); if (approved) { /* approval granted */ } else { /* approval denied */ } } [FunctionName("Approval_Request")] public static async Task RequestApproval( [QueueTrigger("approval-queue")] string instanceId, [OrchestrationClient]DurableOrchestrationClient client) { await client.RaiseEventAsync(instanceId, "Approval", true); } 指定したインスタンスIDの “Approval”イベントを呼出す
- 33. 33 [FunctionName("Approval_Run")] public static async Task RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { bool approved = await context.WaitForExternalEvent<bool>("Approval"); if (approved) { /* approval granted */ } else { /* approval denied */ } } [FunctionName("Approval_Request")] public static async Task RequestApproval( [QueueTrigger("approval-queue")] string instanceId, [OrchestrationClient]DurableOrchestrationClient client) { await client.RaiseEventAsync(instanceId, "Approval", true); } イベントの結果を受けて 後続の処理を実行
- 34. 34 [FunctionName("Approval_Run")] public static async Task RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { bool approved = await context.WaitForExternalEvent<bool>("Approval"); if (approved) { /* approval granted */ } else { /* approval denied */ } } [FunctionName("Approval_Request")] public static async Task RequestApproval( [QueueTrigger("approval-queue")] string instanceId, [OrchestrationClient]DurableOrchestrationClient client) { await client.RaiseEventAsync(instanceId, "Approval", true); } 文字列やオブジェクトを 渡すことも可能
- 35. 価格モデル • App Serviceプラン • 使用するリソースに対する課金 • 常時接続可能(AlwaysOn) • 従量課金プラン • 関数の実行時間と実行回数に対する課金 • 無料枠あり • Cold Startやオートスケールの考慮が必要 35
- 36. 36 [FunctionName("Approval_Run")] public static async Task RunOrchestrator( [OrchestrationTrigger] DurableOrchestrationContext context) { bool approved = await context.WaitForExternalEvent<bool>("Approval"); if (approved) { /* approval granted */ } else { /* approval denied */ } } ここで処理が止まり “Approval”という イベント呼出しを待つ 待機中の時間(＝イベントが呼び出されるまで)は課金対象になる？ 課金対象にならない
- 39. 私が思う アンチパターン 39 if 条件1 条件2 条件3 条件4 条件5 output1 output2 output3 output4 output5 トリガー ひとつのFunctionで複数の出力を行うやつ
- 40. 40 output output output output output 単処理になるように分解する
- 41. 宣伝 41
- 42. 42
- 43. 43