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Diffstat (limited to 'vendor/gopkg.in/mgo.v2/log.go')
-rw-r--r-- | vendor/gopkg.in/mgo.v2/log.go | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/vendor/gopkg.in/mgo.v2/log.go b/vendor/gopkg.in/mgo.v2/log.go new file mode 100644 index 0000000..53eb423 --- /dev/null +++ b/vendor/gopkg.in/mgo.v2/log.go @@ -0,0 +1,133 @@ +// mgo - MongoDB driver for Go +// +// Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net> +// +// 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" + "sync" +) + +// --------------------------------------------------------------------------- +// 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 + globalDebug bool + globalMutex sync.Mutex +) + +// RACE WARNING: There are known data races when logging, which are manually +// silenced when the race detector is in use. These data races won't be +// observed in typical use, because logging is supposed to be set up once when +// the application starts. Having raceDetector as a constant, the compiler +// should elide the locks altogether in actual use. + +// Specify the *log.Logger object where log messages should be sent to. +func SetLogger(logger log_Logger) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + globalLogger = logger +} + +// Enable the delivery of debug messages to the logger. Only meaningful +// if a logger is also set. +func SetDebug(debug bool) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + globalDebug = debug +} + +func log(v ...interface{}) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + if globalLogger != nil { + globalLogger.Output(2, fmt.Sprint(v...)) + } +} + +func logln(v ...interface{}) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + if globalLogger != nil { + globalLogger.Output(2, fmt.Sprintln(v...)) + } +} + +func logf(format string, v ...interface{}) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + if globalLogger != nil { + globalLogger.Output(2, fmt.Sprintf(format, v...)) + } +} + +func debug(v ...interface{}) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + if globalDebug && globalLogger != nil { + globalLogger.Output(2, fmt.Sprint(v...)) + } +} + +func debugln(v ...interface{}) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + if globalDebug && globalLogger != nil { + globalLogger.Output(2, fmt.Sprintln(v...)) + } +} + +func debugf(format string, v ...interface{}) { + if raceDetector { + globalMutex.Lock() + defer globalMutex.Unlock() + } + if globalDebug && globalLogger != nil { + globalLogger.Output(2, fmt.Sprintf(format, v...)) + } +} |