php-fpm-exporter/cmd/server.go
2018-02-17 23:42:58 +11:00

85 lines
3.1 KiB
Go

// Copyright © 2018 Enrico Stahn <enrico.stahn@gmail.com>
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"github.com/spf13/cobra"
"github.com/prometheus/client_golang/prometheus"
"net/http"
"github.com/prometheus/client_golang/prometheus/promhttp"
"php-fpm_exporter/phpfpm"
)
// Configuration variables
var (
listeningAddress string
metricsEndpoint string
scrapeURIs []string
customLabelNames []string
customLabelValues []string
)
// serverCmd represents the server command
var serverCmd = &cobra.Command{
Use: "server",
Short: "A brief description of your command",
Long: `A longer description that spans multiple lines and likely contains examples
and usage of using your command. For example:
Cobra is a CLI library for Go that empowers applications.
This application is a tool to generate the needed files
to quickly create a Cobra application.`,
Run: func(cmd *cobra.Command, args []string) {
log.Infof("Starting server on %v with path %v", listeningAddress, metricsEndpoint)
pm := phpfpm.PoolManager{}
for _, uri := range scrapeURIs {
pm.Add(uri)
}
exporter := phpfpm.NewExporter(pm)
prometheus.MustRegister(exporter)
http.Handle(metricsEndpoint, promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Apache Exporter</title></head>
<body>
<h1>Apache Exporter</h1>
<p><a href='` + metricsEndpoint + `'>Metrics</a></p>
</body>
</html>`))
})
log.Fatal(http.ListenAndServe(listeningAddress, nil))
},
}
func init() {
RootCmd.AddCommand(serverCmd)
// Here you will define your flags and configuration settings.
// Cobra supports Persistent Flags which will work for this command
// and all subcommands, e.g.:
// serverCmd.PersistentFlags().String("foo", "", "A help for foo")
// Cobra supports local flags which will only run when this command
// is called directly, e.g.:
serverCmd.Flags().StringVar(&listeningAddress, "web.listen-address", ":9253", "Address on which to expose metrics and web interface.")
serverCmd.Flags().StringVar(&metricsEndpoint, "web.telemetry-path", "/metrics", "Path under which to expose metrics.")
serverCmd.Flags().StringSliceVar(&scrapeURIs, "phpfpm.scrape-uri", []string{"tcp://127.0.0.1:9000/status"},"FastCGI address, e.g. unix:///tmp/php.sock;/status or tcp://127.0.0.1:9000/status")
serverCmd.Flags().StringSliceVar(&customLabelNames, "phpfpm.label-name", []string{},"Name of the custom label that will be inserted.")
serverCmd.Flags().StringSliceVar(&customLabelValues, "phpfpm.label-value", []string{},"Value of the custom label that will be inserted.")
}