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| author | Ethan Buchman <ethan@coinculture.info> | 2015-02-18 08:25:18 +0800 |
|---|---|---|
| committer | Ethan Buchman <ethan@coinculture.info> | 2015-02-18 08:25:18 +0800 |
| commit | 2ba65f4fbaea49c1e0d99959b0331e09b153f931 (patch) | |
| tree | add8cabb05cd7fbf0ba4b4bbaf9460dacfc2082d /logger/logsystem.go | |
| parent | 2da367a2bee84d74d1bb0ea1b42d4c22fae486dd (diff) | |
| parent | 60318c96d03bcaaf731802b1080a3d87cb482124 (diff) | |
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Merge branch 'develop' of https://github.com/ethereum/go-ethereum into develop
Diffstat (limited to 'logger/logsystem.go')
| -rw-r--r-- | logger/logsystem.go | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/logger/logsystem.go b/logger/logsystem.go new file mode 100644 index 000000000..8458b938f --- /dev/null +++ b/logger/logsystem.go @@ -0,0 +1,63 @@ +package logger + +import ( + "io" + "log" + "sync/atomic" +) + +// LogSystem is implemented by log output devices. +// All methods can be called concurrently from multiple goroutines. +type LogSystem interface { + GetLogLevel() LogLevel + SetLogLevel(i LogLevel) + LogPrint(LogLevel, string) +} + +// NewStdLogSystem creates a LogSystem that prints to the given writer. +// The flag values are defined package log. +func NewStdLogSystem(writer io.Writer, flags int, level LogLevel) LogSystem { + logger := log.New(writer, "", flags) + return &stdLogSystem{logger, uint32(level)} +} + +type stdLogSystem struct { + logger *log.Logger + level uint32 +} + +func (t *stdLogSystem) LogPrint(level LogLevel, msg string) { + t.logger.Print(msg) +} + +func (t *stdLogSystem) SetLogLevel(i LogLevel) { + atomic.StoreUint32(&t.level, uint32(i)) +} + +func (t *stdLogSystem) GetLogLevel() LogLevel { + return LogLevel(atomic.LoadUint32(&t.level)) +} + +// NewRawLogSystem creates a LogSystem that prints to the given writer without +// adding extra information. Suitable for preformatted output +func NewRawLogSystem(writer io.Writer, flags int, level LogLevel) LogSystem { + logger := log.New(writer, "", 0) + return &rawLogSystem{logger, uint32(level)} +} + +type rawLogSystem struct { + logger *log.Logger + level uint32 +} + +func (t *rawLogSystem) LogPrint(level LogLevel, msg string) { + t.logger.Print(msg) +} + +func (t *rawLogSystem) SetLogLevel(i LogLevel) { + atomic.StoreUint32(&t.level, uint32(i)) +} + +func (t *rawLogSystem) GetLogLevel() LogLevel { + return LogLevel(atomic.LoadUint32(&t.level)) +} |