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logger_unix.go
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logger_unix.go
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//go:build linux || darwin
// +build linux darwin
// Copyright Microsoft <wastore@microsoft.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package common
import (
"fmt"
"log/syslog"
"runtime"
)
// ////////////////////////////////////////
type sysLogger struct {
// minimum loglevel represents the minimum severity of log messages which can be logged to Job Log file.
// any message with severity higher than this will be ignored.
jobID JobID
minimumLevelToLog LogLevel // The maximum customer-desired log level for this job
writer *syslog.Writer // The Job's logger
logSuffix string
sanitizer LogSanitizer
}
func NewSysLogger(jobID JobID, minimumLevelToLog LogLevel, logSuffix string) ILoggerResetable {
return &sysLogger{
jobID: jobID,
minimumLevelToLog: minimumLevelToLog,
logSuffix: logSuffix,
sanitizer: NewAzCopyLogSanitizer(),
}
}
func (sl *sysLogger) OpenLog() {
if sl.minimumLevelToLog == LogNone {
return
}
writer, err := syslog.New(syslog.LOG_NOTICE, fmt.Sprintf("%s %s", sl.logSuffix, sl.jobID.String()))
PanicIfErr(err)
sl.writer = writer
// Log the Azcopy Version
_ = sl.writer.Notice("AzcopyVersion " + AzcopyVersion)
// Log the OS Environment and OS Architecture
_ = sl.writer.Notice("OS-Environment " + runtime.GOOS)
_ = sl.writer.Notice("OS-Architecture " + runtime.GOARCH)
}
func (sl *sysLogger) MinimumLogLevel() LogLevel {
return sl.minimumLevelToLog
}
func (jl *sysLogger) ShouldLog(level LogLevel) bool {
if level == LogNone {
return false
}
return level <= jl.minimumLevelToLog
}
func (sl *sysLogger) CloseLog() {
if sl.minimumLevelToLog == LogNone {
return
}
_ = sl.writer.Notice("Closing Log")
sl.writer.Close()
}
func (sl *sysLogger) Panic(err error) {
_ = sl.writer.Crit(err.Error()) // We do NOT panic here as the app would terminate;
//we just log it. We should never reach this line of code!
}
func (sl *sysLogger) Log(loglevel LogLevel, msg string) {
if !sl.ShouldLog(loglevel) {
return
}
w := sl.writer
// ensure all secrets are redacted
msg = sl.sanitizer.SanitizeLogMessage(msg)
switch loglevel {
case LogNone:
//nothing to do
case LogFatal:
_ = w.Emerg(msg)
case LogPanic:
_ = w.Crit(msg)
case LogError:
_ = w.Err(msg)
case LogWarning:
_ = w.Warning(msg)
case LogInfo:
_ = w.Info(msg)
case LogDebug:
_ = w.Debug(msg)
}
}