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log.go
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log.go
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// mgo - MongoDB driver for Go
//
// Copyright (c) 2010-2012 - Gustavo Niemeyer <[email protected]>
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package mgo
import "fmt"
// ---------------------------------------------------------------------------
// Logging integration.
// Avoid importing the log type information unnecessarily. There's a small cost
// associated with using an interface rather than the type. Depending on how
// often the logger is plugged in, it would be worth using the type instead.
type log_Logger interface {
Output(calldepth int, s string) error
}
var globalLogger log_Logger
var globalDebug bool
// Specify the *log.Logger object where log messages should be sent to.
func SetLogger(logger log_Logger) {
globalLogger = logger
}
// Enable the delivery of debug messages to the logger. Only meaningful
// if a logger is also set.
func SetDebug(debug bool) {
globalDebug = debug
}
func log(v ...interface{}) {
if globalLogger != nil {
globalLogger.Output(2, fmt.Sprint(v...))
}
}
func logln(v ...interface{}) {
if globalLogger != nil {
globalLogger.Output(2, fmt.Sprintln(v...))
}
}
func logf(format string, v ...interface{}) {
if globalLogger != nil {
globalLogger.Output(2, fmt.Sprintf(format, v...))
}
}
func debug(v ...interface{}) {
if globalDebug && globalLogger != nil {
globalLogger.Output(2, fmt.Sprint(v...))
}
}
func debugln(v ...interface{}) {
if globalDebug && globalLogger != nil {
globalLogger.Output(2, fmt.Sprintln(v...))
}
}
func debugf(format string, v ...interface{}) {
if globalDebug && globalLogger != nil {
globalLogger.Output(2, fmt.Sprintf(format, v...))
}
}