NET Aspire - NET Conf IL 2024 - Tamir Dresher.pdf

1. .NET Aspire Tamir Dresher Head of Architecture @ Payoneer 31/01/2024

2. Distributed Applications / Microservices are hard!

3. Creating a local dev env for Distributed Applications / Microservices is hard!

4. eShop as an example https://github.com/dotnet/eshop

5. eShop as an example • Running multiple interconnected services • Expressing the system structure • Configuring service discovery • Multiple instances • Making it production grade: reliability, health checks, logging, telemetry etc. • Local experience for observability and debuggability https://github.com/dotnet/eshop

6. .NET Aspire Opinionated, cloud ready stack for building observable, production ready, distributed applications. .NET .NET Aspire Composition & Orchestration Components Tools • Modeling language for defining the system resources and their dependencies • A runtime to for running and connecting multi-project applications and their dependencies • Dashboard • Distributed App VS support • Service Defaults • Publishing utils • Packages of commonly used services, such as Redis or Postgres, with standardized interfaces and capabilities

7. .NET Aspire Opinionated, cloud ready stack for building observable, production ready, distributed applications. .NET .NET Aspire Composition & Orchestration Components Tools • Modeling language for defining the system resources and their dependencies • A runtime to for running and connecting multi-project applications and their dependencies • Dashboard • Distributed App VS support • Service Defaults • Publishing utils • Packages of commonly used services, such as Redis or Postgres, with standardized interfaces and capabilities Orchestration Components Tools Behind the scenes

8. Composition & Orchestration Demo Orchestration Components Tools Behind the scenes

9. Orchestration Components Tools Behind the scenes

13. Q: Where is the link between ‘webfrontend’ and ‘cache’? A: Aspire set the env callback to set env-var with the url Orchestration Components Tools Behind the scenes

15. A few interesting examples Resource specific declarative config Multiple instances External JS app Orchestration Components Tools Behind the scenes

17. Aspire Components Orchestration Components Tools Behind the scenes

18. Standardizing how we use the system resources • Each system resource our app depends on should be consumed by standardized client • The client should provide – Observability and telemetry > Logs > Trace > Metrics – Health checks – Resiliency - the ability of your system to react to failure and still remain functional > Retries > Timeouts > Circuit breakers • All the above should conform to the same conventions (configuration, API surface etc) stated in https://github.com/dotnet/aspire/blob/main/src/Components/README.md Orchestration Components Tools Behind the scenes

23. https://github.com/dotnet/aspire/blob/main/src/Components/Aspire_Components_Progress.md Orchestration Components Tools Behind the scenes

24. Kafka as an example dotnet add package Aspire.Confluent.Kafka builder.AddKafkaProducer<string, string>(“purchase-events"); { "ConnectionStrings": { "purchase-events": “..." }, "Aspire": { "Confluent": { "Kafka": { "Producer": { "HealthChecks": true, "Config": { "Acks": "All" } } } } } } appsettings.json Orchestration Components Tools Behind the scenes

25. Kafka as an example AppHost Basket Service Orchestration Components Tools Behind the scenes

27. Publishing & Deploying Orchestration Components Tools Behind the scenes

28. Aspire Manifest • Aspire project can generate a manifest that can later be used by other tools to deploy into an environment – Think of it as the IL for a distributed .NET app dotnet run --project AspireApp.AppHost.csproj ` --publisher manifest --output-path aspire-manifest.json AspireHost manifest.json deploy tool (azd/Aspir8) provision deploy Orchestration Components Tools Behind the scenes

29. Aspire Manifest • Aspire project can generate a manifest that can later be used by other tools to deploy into an environment – Think of it as the IL for a distributed .NET app dotnet run --project AspireApp.AppHost.csproj ` --publisher manifest --output-path aspire-manifest.json Orchestration Components Tools Behind the scenes

31. Orchestration Components Tools Behind the scenes Deploy the manifest to K8s or Compose with Aspir8 • https://github.com/prom3theu5/aspirational-manifests dotnet tool install -g aspirate --prerelease aspirate generate aspirate generate --output-format compose Kustomize: Compose:

32. Service Defaults Orchestration Components Tools Behind the scenes

33. Service Defaults - Standardizing services behavior • Every service enlisted with Aspire will get automatic reference and call to – AddServiceDefaults() – MapDefaultEndpoints() – if a web project • Out of the box services gets these capabilities – OpenTelemetry – Default HealthChecks – Service Discovery – Standard Resiliency configuration for HttpClient Orchestration Components Tools Behind the scenes

34. Standardizing how our service should behave Orchestration Components Tools Behind the scenes

37. Behind the scenes & Under the covers Orchestration Components Tools Behind the scenes

38. AspireHost Visual Studio DCP (Developer Control Plane) Start process with kubeconfig location Runs apiserver Orchestration Components Tools Behind the scenes

45. AspireHost Visual Studio DCP (Developer Control Plane) Read projects info + launchProfiles Orchestration Components Tools Behind the scenes

46. AspireHost Visual Studio DCP (Developer Control Plane) Read projects info + launchProfiles Orchestration Components Tools Behind the scenes

48. Orchestration Components Tools Behind the scenes AspireHost Visual Studio DCP (Developer Control Plane) Create resource %TEMP%usvc-servicecontroller-serviceconfig]resource[.yaml

49. Orchestration Components Tools Behind the scenes Resource Proxy (traefik) AspireHost Visual Studio DCP (Developer Control Plane) Resource Proxy (traefik) Create resource %TEMP%usvc-servicecontroller-serviceconfig]resource[.yaml

50. AspireHost Visual Studio DCP (Developer Control Plane) Resource Proxy (traefik) Create resource Orchestration Components Tools Behind the scenes %TEMP%usvc-servicecontroller-serviceconfigresource.yaml

51. Orchestration Components Tools Behind the scenes AspireHost Visual Studio DCP (Developer Control Plane) Resource Proxy (traefik) Create resource %TEMP%usvc-servicecontroller-serviceconfigresource.yaml

54. Resource Proxy (traefik) Resource Proxy (traefik) AspireHost Visual Studio DCP (Developer Control Plane) Resource Proxy (traefik) exe Run and attach docker run Set envvars Set binding: Services ConnectionStr Orchestration Components Tools Behind the scenes

55. Resource Proxy (traefik) Resource Proxy (traefik) AspireHost Visual Studio DCP (Developer Control Plane) Resource Proxy (traefik) exe route requests route requests Orchestration Components Tools Behind the scenes

56. https://learn.microsoft.com/en-us/dotnet/aspire/fundamentals/networking-overview Aspire networking Orchestration Components Tools Behind the scenes

57. .NET Aspire - Summary Opinionated, cloud ready stack for building observable, production ready, distributed applications. .NET .NET Aspire Composition & Orchestration Components Tools • Modeling language for defining the system resources and their dependencies • A runtime to for running and connecting multi-project applications and their dependencies • Dashboard • Distributed App VS support • Service Defaults • Publishing utils • Packages of commonly used services, such as Redis or Postgres, with standardized interfaces and capabilities

NET Aspire - NET Conf IL 2024 - Tamir Dresher.pdf

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