chore(asm): clean libddwaf loading [Backport 2.19] #12322
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Depending of the timing, libddwaf loading process could create triggers that would create loops in our instrumentation. From what I investigated: - if loaded too early, it could have bad interactions with gevent. - if loaded too late, it could be self instrumented by the tracer, creating a loop, as ctypes is using Popen and subprocess. while keeping the late loading introduced by 2 previous PRs - #11987 - #12013 this PR introduced a mechanism to bypass tracer instrumentation during ctypes loading, to avoid a possible loop that would prevent the WAF to be loaded. - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting) (cherry picked from commit 4f0bcb5)
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backport #12102 to 2.19
Depending of the timing, libddwaf loading process could create triggers that would create loops in our instrumentation.
From what I investigated:
while keeping the late loading introduced by 2 previous PRs
chore(asm): improve dependency for api security #11987
ci(appsec): fix ddwaf circular import #12013 this PR introduced a mechanism to bypass tracer instrumentation during ctypes loading, to avoid a possible loop that would prevent the WAF to be loaded.
PR author has checked that all the criteria below are met
The PR description includes an overview of the change
The PR description articulates the motivation for the change
The change includes tests OR the PR description describes a testing strategy
The PR description notes risks associated with the change, if any
Newly-added code is easy to change
The change follows the library release note guidelines
The change includes or references documentation updates if necessary
Backport labels are set (if applicable)
Reviewer has checked that all the criteria below are met
Title is accurate
All changes are related to the pull request's stated goal
Avoids breaking API changes
Testing strategy adequately addresses listed risks
Newly-added code is easy to change
Release note makes sense to a user of the library
If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
Backport labels are set in a manner that is consistent with the release branch maintenance
policy
(cherry picked from commit 4f0bcb5)
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