Analyzer lj-func-events

# Name

lj-func-events - Trace LuaJIT function call entry events

This analyzer traces function call execution in LuaJIT-based applications by capturing function entry events at the Lua level. It monitors function invocations in applications such as OpenResty, Kong, and APISIX, recording call sequences and optionally capturing function arguments. The analyzer provides detailed execution traces that help understand code execution flow, identify frequently called functions, and troubleshoot logic errors or unexpected behavior in Lua code.

# Resource Category

CPU.

# Application Type & Technical Stack

• OpenResty
• Kong
• APISIX

# Command Line Syntax

The analyzer can be invoked directly on the command-line via the orxray utility from the openresty-xray-cli software package.

Alternatively, the analyzer can also be invoked manually or automatically on the web console UI of OpenResty XRay (like on the Advanced web page).

# PID is the target process PID.
orxray analyzer run lj-func-events -p PID

# trace a shell command directly
orxray analyzer run lj-func-events -c SHELL_CMD

# PGID is the process group ID or any process's PID within the target process
# group.
orxray analyzer run lj-func-events -p -PGID

# trace any processes started from the specified executable path.
orxray analyzer run lj-func-events --exe /path/to/exe/file

# Tracing Multiple Processes

Supported.

# Output Formats

• Plain Texts

# Author

The OpenResty Inc. Team.

# Copyright

Copyright (C) by OpenResty Inc. All rights reserved.