fix(userspace/falco): make signal termination more robust with multi-threading #2235
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Signed-off-by: Jason Dellaluce <[email protected]>
Signed-off-by: Jason Dellaluce <[email protected]>
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LGTM label has been added. Git tree hash: 26fb1cde5567a6cdb35e8c11d671d0a6744b5df9
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: Andreagit97, FedeDP, jasondellaluce The full list of commands accepted by this bot can be found here. The pull request process is described here
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What type of PR is this?
/kind bug
Any specific area of the project related to this PR?
/area engine
What this PR does / why we need it:
The termination signal (SIGINT) used to put Falco in deadlock if triggered while loading rules, plugins, or the config. Reproducing the deadlock was not deterministic. The solution is to attach the signal handlers as later as possible (after initialization time), but before spawning any additional thread (webserver, grpc, k8s client, per-source thread, etc...).
Which issue(s) this PR fixes:
Special notes for your reviewer:
Does this PR introduce a user-facing change?: