slog: Loki handler

A Loki Handler for slog Go library.

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-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

🚀 Install

go get github.com/samber/slog-loki

Compatibility: go >= 1.20.3

This library is v0 and follows SemVer strictly. On slog final release (go 1.21), this library will go v1.

No breaking changes will be made to exported APIs before v1.0.0.

💡 Usage

GoDoc: https://pkg.go.dev/github.com/samber/slog-loki

Handler options

type Option struct {
	// log level (default: debug)
	Level slog.Leveler

	// loki endpoint
	Endpoint string
	// log batching
	BatchWait          time.Duration
	BatchEntriesNumber int
}

Attributes will be injected in log payload.

Attributes added to records are not accepted.

Example

import (
	slogloki "github.com/samber/slog-loki"
	"golang.org/x/exp/slog"
)

func main() {
	endpoint := "localhost:3100"

	logger := slog.New(slogloki.Option{Level: slog.LevelDebug, Endpoint: endpoint}.NewLokiHandler())
    logger = logger.
        With("environment", "dev").
        With("release", "v1.0.0")

    // log error
    logger.Error("caramba!")

    // log user signup
    logger.Info("user registration")
}

🤝 Contributing

Ping me on twitter @samuelberthe (DMs, mentions, whatever :))
Fork the project
Fix open issues or request new features

Don't hesitate ;)

# Install some dev dependencies
make tools

# Run tests
make test
# or
make watch-test

abh/slog-loki

slog: Loki handler

🚀 Install

💡 Usage

Handler options

Example

🤝 Contributing

👤 Contributors

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📝 License