Add support for log verbosity (#74)

Use stdout for info and debug
Use stderr for warn, error, fatal and panic

Author: puneetguptanitj

Gopkg.lock

@@ -19,13 +19,14 @@ package binary
 import (
 	"fmt"
 	"io/ioutil"
-	"log"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"strings"
 	"time"
 
+	log "github.com/platform9/etcdadm/pkg/logrus"
+
 	"github.com/platform9/etcdadm/constants"
 	"github.com/platform9/etcdadm/util"
 )

binary/etcd.go

@@ -25,7 +25,8 @@ import (
 	"crypto/rsa"
 	"crypto/x509"
 	"fmt"
-	"log"
+
+	log "github.com/platform9/etcdadm/pkg/logrus"
 
 	"github.com/platform9/etcdadm/apis"
 	"github.com/platform9/etcdadm/certs/pkiutil"

certs/certs.go

@@ -17,7 +17,7 @@
 package cmd
 
 import (
-	"log"
+	log "github.com/platform9/etcdadm/pkg/logrus"
 
 	"github.com/platform9/etcdadm/apis"
 	"github.com/platform9/etcdadm/binary"

cmd/download.go

@@ -20,7 +20,8 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"log"
+
+	log "github.com/platform9/etcdadm/pkg/logrus"
 
 	"github.com/platform9/etcdadm/apis"
 	"github.com/platform9/etcdadm/constants"

cmd/info.go

@@ -18,9 +18,10 @@ package cmd
 
 import (
 	"context"
-	"log"
 	"os"
 
+	log "github.com/platform9/etcdadm/pkg/logrus"
+
 	"github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes"
 	"github.com/platform9/etcdadm/etcd"
 

cmd/init.go

@@ -18,10 +18,11 @@ package cmd
 
 import (
 	"context"
-	"log"
 	"net/url"
 	"os"
 
+	log "github.com/platform9/etcdadm/pkg/logrus"
+
 	"github.com/coreos/etcd/etcdserver/etcdserverpb"
 
 	"github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes"

cmd/join.go

@@ -18,9 +18,10 @@ package cmd
 
 import (
 	"context"
-	"log"
 	"os"
 
+	log "github.com/platform9/etcdadm/pkg/logrus"
+
 	"github.com/coreos/etcd/etcdserver/etcdserverpb"
 	"github.com/platform9/etcdadm/apis"
 	"github.com/platform9/etcdadm/binary"

cmd/reset.go

@@ -21,15 +21,25 @@ import (
 	"os"
 
 	"github.com/platform9/etcdadm/apis"
+	log "github.com/platform9/etcdadm/pkg/logrus"
+	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
 
 var etcdAdmConfig apis.EtcdAdmConfig
+var LogLevel string
 
 var (
 	rootCmd = &cobra.Command{
 		Use:  "etcdadm",
 		Long: `Tool to bootstrap etcdadm on the host`,
+		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			logLevel, err := logrus.ParseLevel(LogLevel)
+			if err != nil {
+				log.Fatalf("Could not parse log level %v", logLevel)
+			}
+			log.SetLogLevel(logLevel)
+		},
 	}
 )
 
@@ -39,3 +49,7 @@ func Execute() {
 		os.Exit(1)
 	}
 }
+
+func init() {
+	rootCmd.PersistentFlags().StringVarP(&LogLevel, "log-level", "l", "info", "set log level for output, permitted values debug, info, warn, error, fatal and panic")
+}

cmd/root.go

@@ -19,7 +19,8 @@ package cmd
 import (
 	"encoding/json"
 	"fmt"
-	"log"
+
+	log "github.com/platform9/etcdadm/pkg/logrus"
 
 	"github.com/ghodss/yaml"
 	"github.com/spf13/cobra"