![Building Block API
POST /v1.0/state/vehicles HTTP/1.1
Host: localhost:3500
Content-Type: application/json
[
{
"key": "YH-52-VD",
"value": "{"licenseNumber":"YH-52-VD",
"entryTimestamp":"2021-09-15T11:19:18.1781609"
}"
}
]
HTTP/1.1 204 No Content
Maarten Mulders (@mthmulders)
#dapr](https://image.slidesharecdn.com/dapr-talk-211127211635/75/dapr-dinosaur-or-developers-dream-v1-12-2048.jpg?cb=1669889274)
Dapr: Dinosaur or Developer's Dream? (v1)
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Recently, the Dapr community released Dapr into the wild, aiming to simplify cloud-native application development. Dapr lets you abstract your distributed architecture from the underlying infrastructure that powers it. Forget about Kafka, RabbitMQ or any cloud-specific product: you’re talking with a pub/sub broker. Let Dapr take care of how it works. Want to switch later? Sure, no problem! So, is Dapr the new J2EE application server? How could it change the way we develop distributed solutions? Join me in this talk to find out if we’re looking at a dinosaur in a fancy suit, or a developer’s dream.
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Dapr: Dinosaur or Developer's Dream? (v1)
- 1. Dapr Dinosaur or Developer's Dream? Maarten Mulders (@mthmulders) #dapr
- 5. ...if only there were a standardised API for that! Maarten Mulders (@mthmulders) #dapr
- 6. Here Be Dinosaurs?! (Source: , December 2003, retrieved September 2021) “J2EE has emerged, since it was first released in 1999, as an integrated standard for implementing and deploying portable, multi-tiered enterprise applications The All New J2EE 1.4 Platform Maarten Mulders (@mthmulders) #dapr
- 8. Can't this be a little simpler...? Maarten Mulders (@mthmulders) #dapr
- 9. Dapr: Distributed Application Runtime “An event-driven, portable runtime for building microservices on cloud and edge. Maarten Mulders (@mthmulders) #dapr
- 10. Ingredients (or: Buzzword Bingo) Open Source Polyglot Modular Pluggable Cloud-Native warning: may contain traces of nuts, gluten and other allergens. Maarten Mulders (@mthmulders) #dapr
- 11. Building Block Describe cross-cutting concerns for building distributed systems, e.g. “my application needs to store data as key/value pairs Maarten Mulders (@mthmulders) #dapr
- 12. Building Block API POST /v1.0/state/vehicles HTTP/1.1 Host: localhost:3500 Content-Type: application/json [ { "key": "YH-52-VD", "value": "{"licenseNumber":"YH-52-VD", "entryTimestamp":"2021-09-15T11:19:18.1781609" }" } ] HTTP/1.1 204 No Content Maarten Mulders (@mthmulders) #dapr
- 13. Building Block API GET /v1.0/state/vehicles/YH-52-VD HTTP/1.1 Host: localhost:3500 Accept: application/json HTTP/1.1 200 OK Content-Type: application/json "{ "licenseNumber":"YH-52-VD", "entryTimestamp":"2021-09-15T11:19:18.1781609" }" Maarten Mulders (@mthmulders) #dapr
- 17. Service Mesh on Steroids Service Mesh on Steroids Service Mesh on Steroids Service Mesh on Steroids Service Mesh on Steroids Maarten Mulders (@mthmulders) #dapr
- 18. Demo: key/value store Maarten Mulders (@mthmulders) #dapr
- 21. 🤞🏻 🤞🏻 🤞🏻 🤞🏻 🤞🏻 1. Start the Dapr sidecar 2. Start the demo app 3. Store / retrieve data Maarten Mulders (@mthmulders) #dapr
- 23. 1. State Store — key/value storage 2. Service Invocation — invoke remote methods 3. Pub/Sub — async message processing 4. Bindings — interfaces to/from external integrations 5. Secrets — various secret stores 6. Name resolution — name resolution for service invocation 7. Middleware — various filters on incoming Web requests Over 27 implementations available! Maarten Mulders (@mthmulders) #dapr
- 24. Service Invocation Service Invocation Service Invocation Service Invocation Service Invocation Maarten Mulders (@mthmulders) #dapr
- 28. Demo: service invocation & output bindings Maarten Mulders (@mthmulders) #dapr
- 30. 🤞🏻 🤞🏻 🤞🏻 🤞🏻 🤞🏻 1. Start the Dapr sidecar 2. Start the demo apps 3. Simulate traffic 🚗 4. Receive speeding ticket 😱 Maarten Mulders (@mthmulders) #dapr
- 32. Tracing Inject custom headers (e.g. X-B3-TraceId and X-B3-SpanId) to measure execution throughout a chain. Zipkin collects those traces and provides visualisations. Maarten Mulders (@mthmulders) #dapr
- 33. Metrics Application records metrics (numeric measurements) Prometheus collects (scrapes) measurements → time series Grafana hosts dashboards to visualise the time series Maarten Mulders (@mthmulders) #dapr
- 34. Metrics Dapr exposes metrics about its own processes, such as: resource usage mTLS (certificate issuing) sidecar operations Maarten Mulders (@mthmulders) #dapr
- 36. Tracing with Dapr sidecar POST /v1.0/invoke/vehicleregistrationservice/method/vehicleinfo/YH-52-VD Host: localhost:3500 Content-Type: application/json X-DaprRequestId: b237d1da-beaa-42ef-b8c6-fcf38a900a21 ... (omitted for brevity) Maarten Mulders (@mthmulders) #dapr
- 37. The Dapr SDK for Java Using io.dapr:dapr-sdk daprClient.invokeMethod( "vehicleregistrationservice", "vehicleinfo/" + licenseNumber, null, // no request body HttpExtension.GET, VehicleInfo.class ).contextWrite( /* * add tracing context from * e.g. OpenTracing or Spring Sleuth */ ); Maarten Mulders (@mthmulders) #dapr
- 38. The Dapr SDK for Java Using io.dapr:dapr-sdk-springboot @Topic(name = "speedingviolations", pubsubName = "pubsub") @PostMapping(path = "/collectfine") public ResponseEntity<Void> registerViolation( @RequestBody final CloudEvent<SpeedingViolation> event ) { // ... } Maarten Mulders (@mthmulders) #dapr
- 39. Dinosaur or Developer's Dream? Maarten Mulders (@mthmulders) #dapr
- 40. Dinosaur? BUSTED Developer's Dream? BUSTED Maarten Mulders (@mthmulders) #dapr
- 41. Dapr — Take Aways 1. Building blocks for distributed application integration patterns 2. The sidecar brings you to places you've never been before 3. Not a one-stop shop or Swiss army knife DIY Workshop: https://bit.ly/dapr-workshop- java Maarten Mulders (@mthmulders) #dapr
- 42. Image attributions electronic circuit board - infrastructure - SPECS-speed camera in Utrecht, The Netherlands - lego - airplane cockpit - https://pxhere.com/en/photo/941067 https://pxhere.com/en/photo/1534169 https://commons.wikimedia.org/wiki/File:Trajectcontrole.jpg https://pxhere.com/en/photo/1121211 https://pxhere.com/en/photo/609377 Maarten Mulders (@mthmulders) #dapr