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consul/connect: Avoid assumption of parent service when filtering connect proxies #10872

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merged 2 commits into from
Jul 8, 2021

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shoenig
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@shoenig shoenig commented Jul 8, 2021

This PR uses regex-based matching for sidecar proxy services and checks when syncing
with Consul. Previously we would check if the parent of the sidecar was still being
tracked in Nomad. This is a false invariant - one which we must not depend when we
make #10845 work.

Fixes #10843

…nect proxies

This PR uses regex-based matching for sidecar proxy services and checks when syncing
with Consul. Previously we would check if the parent of the sidecar was still being
tracked in Nomad. This is a false invariant - one which we must not depend when we
make #10845 work.

Fixes #10843
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Overall idea here LGTM. I left a comment about the regex but I'll leave that to you to decide if that should be a blocker.

_, ok := services[id[:len(id)-len(sidecarSuffix)]]
return ok
var (
sidecarProxyCheckRe = regexp.MustCompile(`service:_nomad-.+-sidecar-proxy(:[\d]+)?`)
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I'm not 100% sure how strict this has to be, but I was able to get this regex to match on some unexpected inputs. Maybe this should this have anchors at the start and end? Ex. https://play.golang.org/p/k8UFSZz3E6g

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Good catch! Added regex and appended those test cases

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Connect sidecar and check management based on false invariant
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