slog experimental features such individual log files for different levels, and other extensions.
See also:
- slog-multi:
slog.Handlerchaining, fanout, routing, failover, load balancing... - slog-formatter:
slogattribute formatting - slog-sampling:
slogsampling policy - slog-gin: Gin middleware for
sloglogger - slog-echo: Echo middleware for
sloglogger - slog-fiber: Fiber middleware for
sloglogger - slog-chi: Chi middleware for
sloglogger - slog-datadog: A
sloghandler forDatadog - slog-rollbar: A
sloghandler forRollbar - slog-sentry: A
sloghandler forSentry - slog-syslog: A
sloghandler forSyslog - slog-logstash: A
sloghandler forLogstash - slog-fluentd: A
sloghandler forFluentd - slog-graylog: A
sloghandler forGraylog - slog-loki: A
sloghandler forLoki - slog-slack: A
sloghandler forSlack - slog-telegram: A
sloghandler forTelegram - slog-mattermost: A
sloghandler forMattermost - slog-microsoft-teams: A
sloghandler forMicrosoft Teams - slog-webhook: A
sloghandler forWebhook - slog-kafka: A
sloghandler forKafka - slog-nats: A
sloghandler forNATS - slog-parquet: A
sloghandler forParquet+Object Storage - slog-zap: A
sloghandler forZap - slog-zerolog: A
sloghandler forZerolog - slog-logrus: A
sloghandler forLogrus - slog-channel: A
sloghandler for Go channels - slog-clickhouse: A
sloghandler for ClickHouse
go get github.com/smllnest/slog-clickhouseCompatibility: go >= 1.21
Set different handlers for different log levels.
For example, you can set different handlers to save files for different log levels, such as info, warn, and error.
infoFile, err := os.OpenFile("testdata/info.log", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
if err != nil {
panic(err)
}
defer infoFile.Close()
warnFile, err := os.OpenFile("testdata/warn.log", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
if err != nil {
panic(err)
}
defer warnFile.Close()
errorFile, err := os.OpenFile("testdata/error.log", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
if err != nil {
panic(err)
}
defer errorFile.Close()
infoHandler := slog.NewTextHandler(infoFile, &slog.HandlerOptions{Level: slog.LevelInfo})
warnHandler := slog.NewTextHandler(warnFile, &slog.HandlerOptions{Level: slog.LevelWarn})
errorHandler := slog.NewTextHandler(errorFile, &slog.HandlerOptions{Level: slog.LevelError})
handler := NewLevelHandler(map[slog.Level]slog.Handler{
slog.LevelInfo: infoHandler,
slog.LevelWarn: warnHandler,
slog.LevelError: errorHandler,
})
logger := slog.New(handler)
logger.Info("info text")
logger.Warn("warn text")
logger.Error("error text")use ReplaceTimeAttr and ReplaceSourceAttr.
handler := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
ReplaceAttr: WrapReplaceAttrFunc(ReplaceTimeAttr(time.TimeOnly), ReplaceSourceAttr()),
AddSource: true,
})
logger := slog.New(handler)
logger.Info("info text")
logger.Warn("warn text")
logger.Error("error text")handler := NewLevelHandler(map[slog.Level]slog.Handler{
slog.LevelInfo: infoHandler,
slog.LevelWarn: warnHandler,
slog.LevelError: errorHandler,
}).WithAttrs([]slog.Attr{
slog.Int64("gid", gid.ID()),
})