Distributed Java Logger (1999)

A custom logging framework built before Log4j — async log dispatch, rolling file appenders, and a UDP log collector for aggregating logs from multiple JVMs.

GitHub ↗
loggingmonitoringjava

Distributed Java Logger (1999)

A hand-rolled logging framework from before Log4j — the kind every team was building in 1998–99.

Contents

  • Logger.java — core synchronised logger with level filtering
  • AsyncLogger.java — queue-backed async variant
  • UdpLogAppender.java — ships log entries to a central collector over UDP
  • LogCollector.java — central UDP server that aggregates logs from all JVMs
  • RollingFileAppender.java — rotates log files by size
  • LogViewer.java — simple tail-like viewer for the aggregated master log

Running

# Start the central log collector
java -cp build com.motorola.logging.LogCollector 5140

# Start an application with UDP logging enabled
java -cp build -Dlog.collector=logserver:5140 com.motorola.nms.Main
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