prometheus

Prometheus

Wrappers are a form of middleware that can be used with go-micro services. They can wrap both the Client and Server handlers. This plugin implements the HandlerWrapper interface to provide automatic prometheus metric handling for each microservice method execution time and operation count for success and failed cases.

    // HandlerWrapper wraps the HandlerFunc and returns the equivalent
    type HandlerWrapper func(HandlerFunc) HandlerFunc

Usage

    service := micro.NewService(
        micro.Name("service name"),
    	micro.Version("latest"),
    	micro.WrapHandler(prometheus.NewHandlerWrapper()),
    )
    
    service.Init()
    proto.RegisterGeoIpServiceHandler(service.Server(), &pacage.ServiceImplimentation{})   	

This handler will export two metrics to prometheus:

• go_micro_requests_total. How many go-miro requests processed, partitioned by method and status.
• go_micro_request_durations_microseconds. Service method request latencies in microseconds.