82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
package main
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import (
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"errors"
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"flag"
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"fmt"
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"net/http"
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"os"
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"rbd_exporter/mytypes"
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"rbd_exporter/metrics"
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"rbd_exporter/logger"
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"rbd_exporter/connection"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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)
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var params mytypes.Params
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var mainlogger *zap.SugaredLogger
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// Here I initialize logger
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func loggerInit() *zap.SugaredLogger {
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config := zap.NewDevelopmentConfig()
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config.EncoderConfig.TimeKey = "timestamp"
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config.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
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logger, err := config.Build()
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if err != nil {
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panic(fmt.Sprintf("Logger set up failed: %v", err))
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}
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defer logger.Sync()
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return logger.Sugar()
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}
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// This func runs even before main()
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func init() {
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config_file := flag.String("config", "/etc/ceph/ceph.conf", "placement of ceph config file")
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_keyring := flag.String("keyring", "/etc/ceph/ceph.client.admin.keyring", "placement of ceph keyring file")
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flag.Parse()
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params.Config = *config_file
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params.Keyring = *_keyring
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mainlogger = loggerInit()
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logger.SetLogger(mainlogger)
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mainlogger.Info("Setting up logger is complete successfully")
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mainlogger.Info("Registering prom metrics")
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}
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func main() {
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cephConn, err := connection.Connect(params)
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if err != nil {
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fmt.Println(err)
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if wrapped := errors.Unwrap(err); wrapped != nil {
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fmt.Println(wrapped)
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}
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os.Exit(1)
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}
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defer cephConn.Conn.Shutdown()
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mainlogger.Info("Successfully connected to a cluster")
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http.Handle("/metrics", promhttp.Handler())
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// HTTP runs in separate thread cuz it blocks futher execution of main
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go func() {
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mainlogger.Info("Starting http server")
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// Here I check for errors if HTTP fails
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if err := http.ListenAndServe(":9040", nil); err != nil {
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mainlogger.Fatalf("HTTP server failed to start %v", err)
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}
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mainlogger.Info("HTTP server started")
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}()
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go metrics.GetMetrics(cephConn)
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select {}
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}
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