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Fix issue where routes are not cleaned up when a namespace label is deleted or updated. #20579

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merged 1 commit into from
Aug 13, 2018
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Fix issue where routes are not cleaned up when a namespace label is deleted or updated. #20579

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6 changes: 5 additions & 1 deletion pkg/router/controller/router_controller.go
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Original file line number Diff line number Diff line change
Expand Up @@ -132,7 +132,11 @@ func (c *RouterController) processNamespace(eventType watch.EventType, ns *kapi.
}

func (c *RouterController) UpdateNamespaces() {
namespaces := c.FilteredNamespaceNames
// Note: Need to clone the filtered namespace names or else any updates
// we make locally in processNamespace() will be immediately
// reflected to plugins in the chain beneath us. This creates
// cleanup issues as old == new in Plugin.HandleNamespaces().
namespaces := sets.NewString(c.FilteredNamespaceNames.List()...)
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Oof, good catch

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Yes, processNamespace() is synchronous but Host admitter and Unique status plugins are holding reference to the FilteredNamespaceNames and any subsequent changes in processNamespace() are immediately reflected in those plugin.


glog.V(4).Infof("Updating watched namespaces: %v", namespaces)
if err := c.Plugin.HandleNamespaces(namespaces); err != nil {
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6 changes: 5 additions & 1 deletion pkg/router/template/router.go
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Expand Up @@ -351,8 +351,8 @@ func (r *templateRouter) commitAndReload() error {
}

r.stateChanged = false
r.dynamicallyConfigured = true
if r.dynamicConfigManager != nil {
r.dynamicallyConfigured = true
r.dynamicConfigManager.Notify(RouterEventReloadStart)
}

Expand Down Expand Up @@ -510,6 +510,10 @@ func (r *templateRouter) FilterNamespaces(namespaces sets.String) {
delete(r.state, k)
r.stateChanged = true
}

if r.stateChanged {
r.dynamicallyConfigured = false
}
}

// CreateServiceUnit creates a new service named with the given id.
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