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Improve pathrecorder duplicate registration info 

Print information from both the original path registration and the new
path registration stack traces when encountering a duplicate. This helps
the developer determine where the duplication is coming from and makes
it much easier to resolve.

Signed-off-by: Andy Goldstein <andy.goldstein@redhat.com>

Kubernetes-commit: 04aa8f9dcdbc575fde37e25e45315359b0aa1ca6
This commit is contained in:
Andy Goldstein 2021-12-03 14:42:27 -05:00 committed by Kubernetes Publisher
parent 1d3f2ce7a8
commit b6300d119d
1 changed files with 3 additions and 2 deletions
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5
pkg/server/mux/pathrecorder.go
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@ -103,10 +103,11 @@ func (m *PathRecorderMux) ListedPaths() []string {
}
func (m *PathRecorderMux) trackCallers(path string) {
stack := string(debug.Stack())
if existingStack, ok := m.pathStacks[path]; ok {
utilruntime.HandleError(fmt.Errorf("registered %q from %v", path, existingStack))
utilruntime.HandleError(fmt.Errorf("duplicate path registration of %q: original registration from %v\n\nnew registration from %v", path, existingStack, stack))
}
m.pathStacks[path] = string(debug.Stack())
m.pathStacks[path] = stack
}
// refreshMuxLocked creates a new mux and must be called while locked. Otherwise the view of handlers may