b95fe70b9c
* ci: Use docker multi-stage builds * refactor: Migrate from dep to go mod * ci: Add Makefile to simplify builds * ci: Upgrade to golang 1.11 * refactor: Run goimports for formatting
114 lines
3.3 KiB
Go
114 lines
3.3 KiB
Go
// Copyright © 2018 Enrico Stahn <enrico.stahn@gmail.com>
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package cmd contains the CLI commands.
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package cmd
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import (
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"fmt"
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"os"
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"github.com/hipages/php-fpm_exporter/phpfpm"
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homedir "github.com/mitchellh/go-homedir"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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)
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var log = logrus.New()
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// Version that is being reported by the CLI
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var Version string
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var cfgFile, logLevel string
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// RootCmd represents the base command when called without any subcommands
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var RootCmd = &cobra.Command{
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Use: "php-fpm_exporter",
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Short: "Exports php-fpm metrics for prometheus",
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Long: `php-fpm_exporter exports prometheus compatible metrics from php-fpm.`,
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// Uncomment the following line if your bare application
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// has an action associated with it:
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// Run: func(cmd *cobra.Command, args []string) { },
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}
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// Execute adds all child commands to the root command sets flags appropriately.
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// This is called by main.main(). It only needs to happen once to the rootCmd.
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func Execute() {
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if err := RootCmd.Execute(); err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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}
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func init() {
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cobra.OnInitialize(initConfig, initLogger)
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RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.php-fpm_exporter.yaml)")
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RootCmd.PersistentFlags().StringVar(&logLevel, "log.level", "info", "Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]")
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}
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// initConfig reads in config file and ENV variables if set.
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func initConfig() {
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if cfgFile != "" {
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// Use config file from the flag.
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viper.SetConfigFile(cfgFile)
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} else {
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// Find home directory.
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home, err := homedir.Dir()
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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// Search config in home directory with name ".php-fpm_exporter" (without extension).
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viper.AddConfigPath(home)
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viper.SetConfigName(".php-fpm_exporter")
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}
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viper.AutomaticEnv() // read in environment variables that match
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// If a config file is found, read it in.
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if err := viper.ReadInConfig(); err == nil {
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fmt.Println("Using config file:", viper.ConfigFileUsed())
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}
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}
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// initLogger configures the log level
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func initLogger() {
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phpfpm.SetLogger(log)
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if value := os.Getenv("PHP_FPM_LOG_LEVEL"); value != "" {
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logLevel = value
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}
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lvl, err := logrus.ParseLevel(logLevel)
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if err != nil {
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lvl = logrus.InfoLevel
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log.Fatalf("Could not set log level to '%v'.", logLevel)
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}
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log.SetLevel(lvl)
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}
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func mapEnvVars(envs map[string]string, cmd *cobra.Command) {
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for env, flag := range envs {
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flag := cmd.Flags().Lookup(flag)
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flag.Usage = fmt.Sprintf("%v [env %v]", flag.Usage, env)
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if value := os.Getenv(env); value != "" {
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if err := flag.Value.Set(value); err != nil {
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log.Error(err)
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}
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}
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}
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}
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