skywalking-java/docs/en/guides/write-oal.md

Write OAL script

Read OAL overview to understand the oal script.

Find oal script in source codes

The official official_analysis.oal is here.

Generate tool

The oap-server/generate-tool module includes the source codes of compiling tool. This tool is already integrated maven compile phase. So, unless you want to change the tool source codes, you don't need to set anything.

Run ./mvnw compile or ./mvnw package, the generated codes of the oal script are in oap-server/generate-tool/target/generated-sources/oal/*.

Write and recompile

You could change the official_analysis.oal script, then recompile codes. The generated codes are in oap-server/generated-analysis/target/generated-sources/oal.