slog-exp

slog experimental features such individual log files for different levels, and other extensions.

See also:

slog-multi: slog.Handler chaining, fanout, routing, failover, load balancing...
slog-formatter: slog attribute formatting
slog-sampling: slog sampling policy
slog-gin: Gin middleware for slog logger
slog-echo: Echo middleware for slog logger
slog-fiber: Fiber middleware for slog logger
slog-chi: Chi middleware for slog logger
slog-datadog: A slog handler for Datadog
slog-rollbar: A slog handler for Rollbar
slog-sentry: A slog handler for Sentry
slog-syslog: A slog handler for Syslog
slog-logstash: A slog handler for Logstash
slog-fluentd: A slog handler for Fluentd
slog-graylog: A slog handler for Graylog
slog-loki: A slog handler for Loki
slog-slack: A slog handler for Slack
slog-telegram: A slog handler for Telegram
slog-mattermost: A slog handler for Mattermost
slog-microsoft-teams: A slog handler for Microsoft Teams
slog-webhook: A slog handler for Webhook
slog-kafka: A slog handler for Kafka
slog-nats: A slog handler for NATS
slog-parquet: A slog handler for Parquet + Object Storage
slog-zap: A slog handler for Zap
slog-zerolog: A slog handler for Zerolog
slog-logrus: A slog handler for Logrus
slog-channel: A slog handler for Go channels
slog-clickhouse: A slog handler for ClickHouse

Installation

go get github.com/smllnest/slog-clickhouse

Compatibility: go >= 1.21

Usage

LevelHandler

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")

customized datetime and source

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")

goutine id