Backport of agent: remove data race in agent config into release/1.15.x #20201
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github-team-consul-core-pr-approver
approved these changes
Jan 12, 2024
To fix an issue displaying the current reloaded config in the v1/agent/self endpoint #18681 caused the agent's internal config struct member to be deepcopied and replaced on reload. This is not safe because the field is not protected by a lock, nor should it be due to how it is accessed by the rest of the system. This PR does the same deepcopy, but into a new field solely for the point of capturing the current reloaded values for display purposes. If there has been no reload then the original config is used.
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Backport
This PR is auto-generated from #20200 to be assessed for backporting due to the inclusion of the label backport/1.15.
🚨
The person who merged in the original PR is:
@rboyer
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.
The below text is copied from the body of the original PR.
Description
To fix an issue displaying the current reloaded config in the
v1/agent/selfendpoint #18681 caused the agent's internalconfigstruct member to be deepcopied and replaced on reload.This is not safe because the field is not protected by a lock, nor should it be due to how it is accessed by the rest of the system.
This PR does the same deepcopy, but into a new field solely for the point of capturing the current reloaded values for display purposes. If there has been no reload then the original config is used.
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