Overview

[Kindling-java](https://github.com/kindlingproject/kindling-java { target="_blank" }) is an attach agent to collect Java CPU / LOCK for probe which relies on [async-profiler](https://github.com/kindlingproject/async-profiler { target="_blank" }). Besides it also collect traceid generated by SkyWalking agent.

Features #

• [Event] Collect datas by events specified by event argument[cpu / lock / traceid].
• [Plugins] Enhance SkyWalking Agent and print traceId into /dev/null.

How it works #

• Jattach copy the agent jar and libasyncprofiler.so into container.
• Jattach attach agent into application.
• Agent start asyncProfiler by call asyncProfielr API.
  • Load libasyncprofiler.so
  • Execute star``t/stop command
  • Execute print to collect CPU data at fixed rate
• Agent enhance Skywalking agent by asm and print traceid into /dev/null.
  • Begin / End life cycle of the trace
  • When trace is dispatched into another thread, begin / end life cycle of the runnable execution.