logf Appender and Encoder for systemd Journal

Package logfjournald provides logf Appender and Encoder for systemd Journal. It supports structured logging and bulk operations with zero allocs.

Example

The following example creates the new logf logger with logfjournald appender.

package main

import (
    "runtime"

    "github.com/ssgreg/logf"
    "github.com/ssgreg/logfjournald"
)

func main() {
    // Create journald Appender with default journald Encoder.
    appender, appenderClose := logfjournald.NewAppender(logfjournald.NewEncoder.Default())
    defer appenderClose()

    // Create ChannelWriter with journald Encoder.
    writer, writerClose := logf.NewChannelWriter(logf.ChannelWriterConfig{
        Appender: appender,
    })
    defer writerClose()

    // Create Logger with ChannelWriter.
    logger := logf.NewLogger(logf.LevelInfo, writer)

    logger.Info("got cpu info", logf.Int("count", runtime.NumCPU()))
}

The JSON representation of the journal entry this generates:

{
  "TS": "2018-11-01T07:25:18Z",
  "PRIORITY": "6",
  "LEVEL": "info",
  "MESSAGE": "got cpu info",
  "COUNT": "4",
}