services/health/main.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package main
   6
   7 import (
   8         "context"
   9         "os"
  10
  11         "git.arvados.org/arvados.git/lib/cmd"
  12         "git.arvados.org/arvados.git/lib/service"
  13         "git.arvados.org/arvados.git/sdk/go/arvados"
  14         "git.arvados.org/arvados.git/sdk/go/health"
  15         "github.com/prometheus/client_golang/prometheus"
  16 )
  17
  18 var (
  19         version             = "dev"
  20         command cmd.Handler = service.Command(arvados.ServiceNameHealth, newHandler)
  21 )
  22
  23 func newHandler(ctx context.Context, cluster *arvados.Cluster, _ string, reg *prometheus.Registry) service.Handler {
  24         mClockSkew := prometheus.NewGauge(prometheus.GaugeOpts{
  25                 Namespace: "arvados",
  26                 Subsystem: "health",
  27                 Name:      "clock_skew_seconds",
  28                 Help:      "Clock skew observed in most recent health check",
  29         })
  30         reg.MustRegister(mClockSkew)
  31         return &health.Aggregator{
  32                 Cluster:         cluster,
  33                 MetricClockSkew: mClockSkew,
  34         }
  35 }
  36
  37 func main() {
  38         os.Exit(command.RunCommand(os.Args[0], os.Args[1:], os.Stdin, os.Stdout, os.Stderr))
  39 }