Use prefix in all vtorc check and recover logs (vitessio#17526) (#592)

This is a backport of vitessio#17526 . Original PR description below:

Description
This is meant to make recovery actions more easily identified from the logs. See vitessio#17465

Signed-off-by: Eduardo J. Ortega U. <5791035+ejortegau@users.noreply.github.com>

Author: ejortegau

go/vt/log/log.go

@@ -111,3 +111,94 @@ func (lrms *logRotateMaxSize) String() string {
 func (lrms *logRotateMaxSize) Type() string {
 	return "uint64"
 }
+
+type PrefixedLogger struct {
+	prefix string
+}
+
+func NewPrefixedLogger(prefix string) *PrefixedLogger {
+	return &PrefixedLogger{prefix: prefix + ": "}
+}
+
+func (pl *PrefixedLogger) V(level glog.Level) glog.Verbose {
+	return V(level)
+}
+
+func (pl *PrefixedLogger) Flush() {
+	Flush()
+}
+
+func (pl *PrefixedLogger) Info(args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Info(args...)
+}
+
+func (pl *PrefixedLogger) Infof(format string, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Infof("%s"+format, args...)
+}
+
+func (pl *PrefixedLogger) InfoDepth(depth int, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	InfoDepth(depth, args...)
+}
+
+func (pl *PrefixedLogger) Warning(args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Warning(args...)
+}
+
+func (pl *PrefixedLogger) Warningf(format string, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Warningf("%s"+format, args...)
+}
+
+func (pl *PrefixedLogger) WarningDepth(depth int, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	WarningDepth(depth, args...)
+}
+
+func (pl *PrefixedLogger) Error(args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Error(args...)
+}
+
+func (pl *PrefixedLogger) Errorf(format string, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Errorf("%s"+format, args...)
+}
+
+func (pl *PrefixedLogger) ErrorDepth(depth int, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	ErrorDepth(depth, args...)
+}
+
+func (pl *PrefixedLogger) Exit(args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Exit(args...)
+}
+
+func (pl *PrefixedLogger) Exitf(format string, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Exitf("%s"+format, args...)
+}
+
+func (pl *PrefixedLogger) ExitDepth(depth int, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	ExitDepth(depth, args...)
+}
+
+func (pl *PrefixedLogger) Fatal(args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Fatal(args...)
+}
+
+func (pl *PrefixedLogger) Fatalf(format string, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	Fatalf("%s"+format, args...)
+}
+
+func (pl *PrefixedLogger) FatalDepth(depth int, args ...any) {
+	args = append([]interface{}{pl.prefix}, args...)
+	FatalDepth(depth, args...)
+}

go/vt/vtorc/logic/disable_recovery.go

@@ -30,6 +30,7 @@ package logic
 // go to the database each time.
 
 import (
+	"errors"
 	"fmt"
 
 	"vitess.io/vitess/go/vt/external/golib/sqlutils"
@@ -55,7 +56,7 @@ func IsRecoveryDisabled() (disabled bool, err error) {
 	if err != nil {
 		errMsg := fmt.Sprintf("recovery.IsRecoveryDisabled(): %v", err)
 		log.Errorf(errMsg)
-		err = fmt.Errorf(errMsg)
+		err = errors.New(errMsg)
 	}
 	return disabled, err
 }