Fix bug in leaf-cert cache type where multiple client tokens collide #4736
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mkeeler
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Oct 2, 2018
… tokens would share certs and block incorrectly
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Test all passing locally. Going to merge this. |
banks
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…4736) * Fix bug in leaf-cert cache type where multiple clients with different tokens would share certs and block incorrectly * Use hash for issued certs key to avoid ambiguity concatenating
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…4736) * Fix bug in leaf-cert cache type where multiple clients with different tokens would share certs and block incorrectly * Use hash for issued certs key to avoid ambiguity concatenating
banks
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Oct 10, 2018
…4736) * Fix bug in leaf-cert cache type where multiple clients with different tokens would share certs and block incorrectly * Use hash for issued certs key to avoid ambiguity concatenating
banks
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Oct 10, 2018
…4736) * Fix bug in leaf-cert cache type where multiple clients with different tokens would share certs and block incorrectly * Use hash for issued certs key to avoid ambiguity concatenating
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Note: this PR targets merging into f-envoy and depends directly on #4735. This is part of a series of PRs that were developed together but split for easier review.
This is a fix for a bug that is actually unrelated to
f-envoychanges in general, however it manifests in broken tests in other parts of our test suite whenproxycfg.Manageris running in the agent since we now have an always-on second client that might be using a different token.The issue is: the leaf cache type shared a cache of issued certs separate to the final cache entries. It didn't partition by token which meant that:
cachepackage level would cause the second client on their initial request to block for the full 10 mins before being delivered the cache hit. This is explicitly tested to be fixed now even though the only way to trigger this now other than different tokens is different datacenter which is meaningless and will error for CA leaf requests currently. It seems important to explicitly not depend on the higher level cache de-duping here to avoid subtle future consequences to changing that logic.