paketo-buildpacks / jattach

A Cloud Native Buildpack that provides the JAttach binary to send commands to a remote JVM via Dynamic Attach mechanism.

gcr.io/paketo-buildpacks/jattach

The Paketo Buildpack for JAttach is a Cloud Native Buildpack that provides the JAttach binary to send commands to a remote JVM via Dynamic Attach mechanism.

Behavior

This buildpack will participate all the following conditions are met

• $BP_JATTACH_ENABLED is set

The buildpack will do the following:

• Contributes JAttach to a layer marked launch with command on $PATH

License

This buildpack is released under version 2.0 of the Apache License.

jattach's Issues

Commad not added to the `$PATH`

When building with the base image paketobuildpacks/builder-jammy-base:latest and BP_JATTACH_ENABLED=true, the jattach layer is added, but executable is not added to to path, nor included in any folders included in the path.

cnb@plainly-backend-86787d8f85-hbhzk:/$ ./layers/paketo-buildpacks_jattach/jattach/bin/jattach             
jattach 2.2 built on Jan 10 2024

Usage: jattach <pid> <cmd> [args ...]

Commands:
    load  threaddump   dumpheap  setflag    properties
    jcmd  inspectheap  datadump  printflag  agentProperties

cnb@plainly-backend-86787d8f85-hbhzk:/$ jattach
bash: jattach: command not found

cnb@plainly-backend-86787d8f85-hbhzk:/$ echo $PATH
/cnb/process:/cnb/lifecycle:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

Expected Behavior

Command should be in the path.

Steps to Reproduce

1. I managed to hit it by using the spring boot gradle-based docker image build, setup as:

tasks.named("bootBuildImage") {
    builder = 'paketobuildpacks/builder-jammy-base:latest'
    environment["BP_JATTACH_ENABLED"] = "true"
}