How to integrate Spring-Boot-Actuator endpoints and GRPC together?

[Joholland]

How to integrate Spring-Boot-Actuator endpoints and GRPC together?

[jvmlet]

I have plans to expose metrics via micrometer.io, so stay tuned 😁

[petrmac]

@jvmlet, we are using the grpc-spring-boot-starter, but would like to run boot alongside to provide the kubernetes liveness and readiness probes. The boot however does not start web server (neither Tomcat, nor Jetty).
Would you have any hint on how to use spring boot actuator on http (rest) for health check alongside the grpc port?

[jvmlet]

You are right, I haven't found the API to attach gRPC listener to the running instance of server.
At our own projects we are running both embedded Tomcat that hosts actuator endpoints and embedded gRPC server on different ports.

[Joholland]

I tried this, but I didn't see the Jetty instance start. I can try embedded tomcat. Did you do anything else to make this side by side configuration work?

[jvmlet]

No, nothing special, I just added web starter with actuator together with grpc starter and got tomcat with netty running side by side. I'll be able to send you the sample at Sunday if you still have issue till then.

[jvmlet]

@Joholland,
I've updated the demo application to host actuators + added test case for this.
Also, you can start demo app with gradle bootRun or java -jar grpc-spring-boot-starter-demo-0.0.2.jar and see the output of http://localhost:8080/env.

[axcrest]

@jvmlet does your solution get the actuator to give info on GRPC such as tracing the request time of those GRPC endpoints? I want to know how long my business logic is taking to respond, and the logic is triggered by the GRPC endpoints.

[jvmlet]

@axcrest not yet, but you can have a loot at
#136 that integrates kibana APM via interceptors support as example

[jvmlet]

If you add web and actuator starters to your app, do you see metrics exposed by grpc?