overdue

.rclone_repo/vendor/github.com/yunify/qingstor-sdk-go/logger/logger.go

@@ -0,0 +1,102 @@
+// +-------------------------------------------------------------------------
+// | Copyright (C) 2016 Yunify, Inc.
+// +-------------------------------------------------------------------------
+// | Licensed under the Apache License, Version 2.0 (the "License");
+// | you may not use this work except in compliance with the License.
+// | You may obtain a copy of the License in the LICENSE file, or at:
+// |
+// | http://www.apache.org/licenses/LICENSE-2.0
+// |
+// | Unless required by applicable law or agreed to in writing, software
+// | distributed under the License is distributed on an "AS IS" BASIS,
+// | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// | See the License for the specific language governing permissions and
+// | limitations under the License.
+// +-------------------------------------------------------------------------
+
+// Package logger provides support for logging to stdout and stderr.
+package logger
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/pengsrc/go-shared/log"
+)
+
+// Logger is the interface of SDK logger.
+type Logger interface {
+	Debugf(ctx context.Context, format string, v ...interface{})
+	Infof(ctx context.Context, format string, v ...interface{})
+	Warnf(ctx context.Context, format string, v ...interface{})
+	Errorf(ctx context.Context, format string, v ...interface{})
+	Fatalf(ctx context.Context, format string, v ...interface{})
+	Panicf(ctx context.Context, format string, v ...interface{})
+}
+
+// CheckLevel checks whether the log level is valid.
+func CheckLevel(level string) error {
+	if _, err := log.ParseLevel(level); err != nil {
+		return fmt.Errorf(`log level not valid: "%s"`, level)
+	}
+	return nil
+}
+
+// GetLevel get the log level string.
+func GetLevel() string {
+	if l, ok := instance.(*log.Logger); ok {
+		return l.GetLevel()
+	}
+	return "UNKNOWN"
+}
+
+// SetLevel sets the log level.
+// Valid levels are "debug", "info", "warn", "error", and "fatal".
+func SetLevel(level string) {
+	if l, ok := instance.(*log.Logger); ok {
+		err := l.SetLevel(level)
+		if err != nil {
+			Fatalf(nil, fmt.Sprintf(`log level not valid: "%s"`, level))
+		}
+	}
+}
+
+// SetLogger sets the a logger as SDK logger.
+func SetLogger(l Logger) {
+	instance = l
+}
+
+// Debugf logs a message with severity DEBUG.
+func Debugf(ctx context.Context, format string, v ...interface{}) {
+	instance.Debugf(ctx, format, v...)
+}
+
+// Infof logs a message with severity INFO.
+func Infof(ctx context.Context, format string, v ...interface{}) {
+	instance.Infof(ctx, format, v...)
+}
+
+// Warnf logs a message with severity WARN.
+func Warnf(ctx context.Context, format string, v ...interface{}) {
+	instance.Warnf(ctx, format, v...)
+}
+
+// Errorf logs a message with severity ERROR.
+func Errorf(ctx context.Context, format string, v ...interface{}) {
+	instance.Errorf(ctx, format, v...)
+}
+
+// Fatalf logs a message with severity ERROR followed by a call to os.Exit().
+func Fatalf(ctx context.Context, format string, v ...interface{}) {
+	instance.Fatalf(ctx, format, v...)
+}
+
+var instance Logger
+
+func init() {
+	l, err := log.NewTerminalLogger(log.WarnLevel.String())
+	if err != nil {
+		panic(fmt.Sprintf("failed to initialize QingStor SDK logger: %v", err))
+	}
+	instance = l
+}