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69 lines
1.9 KiB
69 lines
1.9 KiB
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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Package log provides simple convenience wrappers for logging.
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Following convention, this provides functions for logging warnings, errors, information
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and debugging.
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*/
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package log
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import (
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"log"
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"os"
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)
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// Receiver can receive log messages from this package.
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type Receiver interface {
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Printf(format string, v ...interface{})
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}
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// Logger is the destination for this package.
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//
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// The logger that this prints to.
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var Logger Receiver = log.New(os.Stderr, "", log.LstdFlags)
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// IsDebugging controls debugging output.
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//
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// If this is true, debugging messages will be printed. Expensive debugging
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// operations can be wrapped in `if log.IsDebugging {}`.
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var IsDebugging = false
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// Err prints an error of severity ERROR to the log.
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func Err(msg string, v ...interface{}) {
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Logger.Printf("[ERROR] "+msg+"\n", v...)
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}
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// Warn prints an error severity WARN to the log.
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func Warn(msg string, v ...interface{}) {
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Logger.Printf("[WARN] "+msg+"\n", v...)
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}
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// Info prints an error of severity INFO to the log.
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func Info(msg string, v ...interface{}) {
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Logger.Printf("[INFO] "+msg+"\n", v...)
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}
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// Debug prints an error severity DEBUG to the log.
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//
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// Debug will only print if IsDebugging is true.
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func Debug(msg string, v ...interface{}) {
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if IsDebugging {
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Logger.Printf("[DEBUG] "+msg+"\n", v...)
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}
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}
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