pkg/log/zap: Adding ability to get client-go and trace level logs

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Changed
 
 - When Helm operator projects are created, the SDK now generates RBAC rules in `deploy/role.yaml` based on the chart's default manifest. ([#1188](https://github.com/operator-framework/operator-sdk/pull/1188))
+- When debug level is 3 or higher, we will set the klog verbosity to that level. ([#1322](https://github.com/operator-framework/operator-sdk/pull/1322))
 
 ### Deprecated
 

pkg/log/zap/flags.go

@@ -15,13 +15,15 @@
 package zap
 
 import (
+	"flag"
 	"fmt"
 	"strconv"
 	"strings"
 
 	"github.com/spf13/pflag"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
+	"k8s.io/klog"
 )
 
 var (
@@ -41,6 +43,7 @@ func init() {
 	zapFlagSet.Var(&sampleVal, "zap-sample", "Enable zap log sampling. Sampling will be disabled for integer log levels > 1")
 }
 
+// FlagSet - The zap logging flagset.
 func FlagSet() *pflag.FlagSet {
 	return zapFlagSet
 }
@@ -112,6 +115,12 @@ func (v *levelValue) Set(l string) error {
 		}
 	}
 	v.level = zapcore.Level(int8(lvl))
+	// If log level is greater than debug, set glog/klog level to that level.
+	if lvl < -3 {
+		fs := flag.NewFlagSet("", flag.ContinueOnError)
+		klog.InitFlags(fs)
+		fs.Set("v", fmt.Sprintf("%v", -1*lvl))
+	}
 	return nil
 }