Monitoring

Introduction

monitoring handler aim to monitor traffics of server side microservice see how to export metrics to prometheus observable

it records 3 different metrics:

  • request_count

  • request_process_duration

  • error_response_count

all the metrics name starts with “scb_”, it stands for servicecomb system

Usage

1.Import it in your main file

import _ github.com/go-chassis/go-chassis/v2/middleware/monitoring

  1. you must set monitoring handler in chain provider chain , here is a example

    handler:
  chain:
    Provider:
      default: monitoring

metrics API response looks like below：

# HELP scb_request_count 
# TYPE scb_request_count counter
scb_request_count{app="default",env="",instance="",service="servicecomb-kie",version="0.1.0"} 14
# HELP scb_request_process_duration 
# TYPE scb_request_process_duration summary
scb_request_process_duration{app="default",env="",instance="",service="servicecomb-kie",version="0.1.0",quantile="0.5"} 3
scb_request_process_duration{app="default",env="",instance="",service="servicecomb-kie",version="0.1.0",quantile="0.9"} 80
scb_request_process_duration{app="default",env="",instance="",service="servicecomb-kie",version="0.1.0",quantile="0.99"} 80
scb_request_process_duration_sum{app="default",env="",instance="",service="servicecomb-kie",version="0.1.0"} 315
scb_request_process_duration_count{app="default",env="",instance="",service="servicecomb-kie",version="0.1.0"} 14