Slides for de:code 2019 CD02 session (May 30, 2019) Session Title: Azure Functions 2.0 Deep Dive - デベロッパーのための最新開発ガイド https://www.microsoft.com/ja-jp/events/decode/2019session/detail.aspx?sid=CD02 Session Video: https://youtu.be/fyq48ciTkF8

1. de:code 2019 CD02
Azure Functions 2.0 Deep Dive

2. @yokawasa
https://github.com/yokawasa
Azure Technology Solution Professional
J J s K B G
At 2 2 1 027C N e D A K k B o
n l b Ja G A K n pD
, Obc
About Speaker

4. Serverless & Azure Functions
Overview

5. Serverless

6. Serverless
https://martinfowler.com/articles/serverless.html
BaaS ( Backend as a Service)
FaaS ( Functions as a Service)

7. FaaS
Serverless can also mean applications where server-
side logic is still written by the application developer,
but, unlike traditional architectures, it’s run in
stateless compute containers that are event-triggered,
ephemeral (may only last for one invocation), and fully
managed by a third party. One way to think of this is
“Functions as a Service” or "FaaS".
https://martinfowler.com/articles/serverless.html

8. Infrastructure
Host OS
Hypervisor
Guest
OS
Guest
OS
Guest
OS
Bins/
Libs
Bins/
Libs
Bins/
Libs
App App App
Infrastructure
Host OS
Container Engine
Bins/
Libs
Bins/
Libs
Bins/
Libs
App App App

9. (request) (response)
: Wikipedia –
•
•

10. FaaS
HTTP
HTTPProxy

11. Serverless is cheaper, not simpler
https://medium.freecodecamp.org/serverless-is-cheaper-not-simpler-a10c4fc30e49

12. •
•
•
•
•
•

16. Room O - 14:50 - 15:40 (Day2)

17. Azure Functions 2.0
Runtime & Programming Model

18. Azure Functions Runtime
Functions 1.X Runtime Functions 2.X Runtime
gRPC

19. Runtime
Azure Functions 1.X Azure Functions 2.X
host
extensions
Functions
code & config
host Functions
code & config
extensions
Microsoft.NET.Sdk.Functions (.NET Framework 4.6)
• HTTP
• Timer
• Storage
• Service Bus
• EventHubs
• Cosmos DB
Microsoft.NET.Sdk.Functions (.NET Standard 2.0)
• HTTP
• Timer
Microsoft.Azure.WebJobs.Extensions.Storage
Microsoft.Azure.WebJobs.Extensions.ServiceBus
Microsoft.Azure.Webjobs.Extensions.EventHubs
Microsoft.Azure.WebJobs.Extensions.CosmosDB
Microsoft.Azure.Webjobs.Extensions.EventGrid
Microsoft.Azure.WebJobs.Extensions.DurableTask
Microsoft.Azure.Webjobs.Extensions.MicrosoftGraph

20. – Trigger & Binding
Function
Code
{
"disabled":false,
"bindings":[
// ... bindings here
{
"type": "bindingType",
"direction": "in",
"name": "myParamName",
//more depending on binding
}
]
}

21. trigger
– Blob → → Cosmos DB
https://github.com/yokawasa/azure-functions-python-samples/tree/master/v2functions/blob-trigger-cosmosdb-out-binding
Function
trigger

22. https://docs.microsoft.com/en-us/azure/azure-functions/supported-languages https://docs.microsoft.com/en-us/azure/azure-functions/functions-triggers-bindings
Cosmos
DB
Blob
Storage
Queue
Storage
Table
Storage
Service
Bus
Event
Grid
Event
Hub
HTTP
Webhook
Timer
Microsoft
Graph
Mobile
Apps
SignalR

23. Functions
•
•

24. Azure Functions Hosting Options

25. •
• Cold Start
•
• ACU
•
• OS
Consumption Plan on Windows App Service Plan on Linux
https://docs.microsoft.com/en-us/azure/virtual-machines/windows/acu

26. Consumption ( ) App Service Premium
2019 5

27. functionTimeout
Plan Scale Out:
•
App Scale Out:
•
https://docs.microsoft.com/en-us/azure/azure-functions/functions-premium-plan

28. https://docs.microsoft.com/en-us/azure/azure-functions/functions-scale#runtime-scaling
• Function App 200
• HTTP Trigger
• NON-HTTP Trigger 30
[ ] Trigger
2019 5

29. https://docs.microsoft.com/ja-jp/azure/azure-functions/functions-host-json

30. https://azure.microsoft.com/en-us/blog/understanding-serverless-cold-start
functions

31. • Warmup

32. azure functions runtime
base image
Language worker
Language framework
Azure Functions
Azure Functions
https://hub.docker.com/_/microsoft-azure-functions-base
https://github.com/Azure/azure-functions-docker

34. +
2019 5

35. https://github.com/kedacore/keda
•
•
•
Storage
Queue
ServiceBus
Queue
Kafka
RabbitMQ
HPA KEDA
1->N or N->1 0->1 or 1->0
…
K E D A

36. Functions
•
•

37. Azure Functions Best Practices

38. ?
?
?
FIFO
Pub/Sub
Queue

39. …
…

40. –
•
•
•

41. Durable Functions
Durable Function Overview
https://docs.microsoft.com/ja-jp/azure/azure-functions/durable-functions-overview

42. F1 F2 F3 F4
Queue Queue Queue
Durable Functions Durable Functions
F1
F2
F3
F4
Orchestrator
Function
// calls functions in sequence
public static async Task<object> Run(DurableOrchestrationContext ctx)
{
try
{
var x = await ctx.CallFunctionAsync("F1");
var y = await ctx.CallFunctionAsync("F2", x);
var z = await ctx.CallFunctionAsync("F3", y);
return await ctx.CallFunctionAsync("F4", z);
}
catch (Exception)

43. Function chaining
Fan-out / fan-in
Event aggregation
Extended Status Monitoring
http
Async HTTP APIs
Human interaction / timeout
https://docs.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-concepts

44. Durable Functions
IMAGE WORKS
https://customers.microsoft.com/ja-
jp/story/fujifilm-manufacturing-azure-
ai-functions-jp-japan

45. trigger
Function

46. https://docs.microsoft.com/en-us/azure/azure-functions/manage-connections

47. • https://stackoverflow.com/questions/48339829/async-programming-and-azure-functions
• https://stackoverflow.com/questions/40409344/how-can-i-bind-output-values-to-my-async-azure-function/40409345#40409345
async await async Task.Run
Task.Run NG
await output return
value Bind

48. • Application Insights
•
Live Metrics Stream Application Map
https://docs.microsoft.com/ja-jp/azure/azure-functions/functions-monitoring
•
•

49. Collects and analyzes
health, performance,
and usage data

50. Azure DevOps Labs - https://azuredevopslabs.com/

52. © 2018 Microsoft Corporation. All rights reserved.
© 2019 Microsoft Corporation. All rights reserved.
( ) de:code 2019 (2019 5 29~30 )
Y
A
X B

54. APPENDIX

55. https://github.com/Azure/azure-functions
• Azure Functions Host - the Azure Functions runtime/host
• Azure WebJobs SDK - the "core" of the Azure Functions runtime and many bindings
• Azure WebJobs SDK extensions - the repositories of many bindings
• Azure Functions Core Tools - the command line tool for Azure Functions
• Azure Functions NodeJS Worker - support for running JavaScript functions
• Azure Functions Java Worker - support for running Java functions
• Azure Functions Python Worker - support for running Python functions
• Azure Functions UX - the UX for the Functions development portal
• Azure Functions templates - the templates which show up in the Azure Functions portal,
Visual Studio, Visual Studio Code, etc
• Azure Functions samples - repository for some samples on how the runtime works
• Azure Functions VS Tooling - msbuild tasks for precompiled functions

56. https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/serverless/web-app
https://github.com/mspnp/serverless-reference-implementation
https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/serverless/event-processing
https://github.com/mspnp/serverless-reference-implementation

57. Functions
•
•
•
•
•
•

58. Queue
2019.05
Storage Queue Service Bus Queue
https://docs.microsoft.com/ja-jp/azure/service-bus-messaging/service-bus-azure-and-service-bus-queues-compared-contrasted

61. CNCF Serverless WG
•
•
•
•
https://github.com/cloudevents/spec/blob/master/json-format.md
: CloudEvent JSON (data )