Simple actix Server

Note: Currently in DRAFT

Simple Actix Server with Opentracing implementation:

• Use Istio for service Mesh
• Use Opentracing inside application
• Forward opentracing header in order to see service to service trace in jaegger

Prerequisite

Build

Build App:

cargo build  --release

Run

Locally

cargo run

On kubernetes with skaffold

Note: Adapt skaffold.yaml and kubernetes manifest for your configuration

• Two services will be deployed with each 2 replicas of this application.
• One sidecar will be added for jaeger agent as library rustacing_jaeger don't implement thrift trace over http
• If Istio is implemented virtualservice will route traffic to your application.

You can build and deploy your app every time your code changes:

skaffold dev --namespace test --port-forward 

or build and deploy your app once, on demand:

skaffold run

Usage

Backend

Get version info

 curl -X GET http://localhost:8080/

Create User

curl -X POST http://localhost8080/user -d '{"name": "titi", "age": 10}'

Generate Span and Subspan

 curl -X GET http://localhost:8080/span

Made Tic-tac over two services:

 curl -X GET http://localhost:8080/tic

Jaeger

If tracing is implemented with Istio you can check your trace, by accessing dashboard.

Setup access to the Jaeger dashboard by using port-forwarding:

kubectl port-forward -n istio-system $(kubectl get pod -n istio-system -l app=jaeger -o jsonpath='{.items[0].metadata.name}') 16686:16686 &

Access the Jaeger dashboard by opening your browser to http://localhost:16686.

TIPS

These headers must be forwarded when calling other services:

• x-request-id
• x-b3-traceid
• x-b3-spanid
• x-b3-parentspanid
• x-b3-sampled
• x-b3-flags
• x-ot-span-context

TODO

• Implement opentracing over fn
• Implement prometheus endpoint