68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
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// Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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package common
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import (
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"sync"
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)
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// Simple logging proxy to distinguish control for logging messages
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// Debug logging is turned on/off by the presence of the environment variable "OCI_GO_SDK_DEBUG"
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var debugLog = log.New(os.Stderr, "DEBUG ", log.Ldate|log.Ltime|log.Lshortfile)
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var mainLog = log.New(os.Stderr, "", log.Ldate|log.Ltime|log.Lshortfile)
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var isDebugLogEnabled bool
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var checkDebug sync.Once
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func getOutputForEnv() (writer io.Writer) {
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checkDebug.Do(func() {
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isDebugLogEnabled = *new(bool)
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_, isDebugLogEnabled = os.LookupEnv("OCI_GO_SDK_DEBUG")
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})
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writer = ioutil.Discard
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if isDebugLogEnabled {
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writer = os.Stderr
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}
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return
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}
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// Debugf logs v with the provided format if debug mode is set
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func Debugf(format string, v ...interface{}) {
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debugLog.SetOutput(getOutputForEnv())
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debugLog.Output(3, fmt.Sprintf(format, v...))
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}
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// Debug logs v if debug mode is set
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func Debug(v ...interface{}) {
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debugLog.SetOutput(getOutputForEnv())
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debugLog.Output(3, fmt.Sprint(v...))
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}
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// Debugln logs v appending a new line if debug mode is set
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func Debugln(v ...interface{}) {
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debugLog.SetOutput(getOutputForEnv())
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debugLog.Output(3, fmt.Sprintln(v...))
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}
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// IfDebug executes closure if debug is enabled
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func IfDebug(fn func()) {
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if isDebugLogEnabled {
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fn()
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}
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}
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// Logln logs v appending a new line at the end
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func Logln(v ...interface{}) {
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mainLog.Output(3, fmt.Sprintln(v...))
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}
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// Logf logs v with the provided format
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func Logf(format string, v ...interface{}) {
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mainLog.Output(3, fmt.Sprintf(format, v...))
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}
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