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Watch feature (#1527)

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* Add part 1 watch functionality. (squashed)

* add funcs for service/endpoint fqdns

* add endpoints watch

* document exposed funcs

* only send subset deltas

* locking for watch map

* tests and docs

* add pod watch

* remove debugs prints

* feedback part 1

* add error reporting to proto

* inform clients of server stop+errors

* add grpc options param

* use proper context

* Review feedback:
 * Removed client (will move to another repo)
 * Use new log functions
 * Change watchChan to be for string not []string
 * Rework how k8s plugin stores watch tracking info to simplify
 * Normalize the qname on watch request

* Add blank line back

* Revert another spurious change

* Fix tests

* Add stop channel.
Fix tests.
Better docs for plugin interface.

* fmt.Printf -> log.Warningf

* Move from dnsserver to plugin/pkg/watch

* gofmt

* remove dead client watches

* sate linter

* linter omg
This commit is contained in:
John Belamaric
2018-06-27 07:45:32 -07:00
committed by GitHub
parent b7480d5d12
commit 99287d091c
17 changed files with 980 additions and 60 deletions
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5
plugin/kubernetes/README.md
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@@ -110,6 +110,11 @@ kubernetes [ZONES...] {
This plugin implements dynamic health checking. Currently this is limited to reporting healthy when
the API has synced.
## Watch
This plugin implements watch. A client that connects to CoreDNS using `coredns/client` can be notified
of changes to A, AAAA, and SRV records for Kubernetes services and endpoints.
## Examples
Handle all queries in the `cluster.local` zone. Connect to Kubernetes in-cluster. Also handle all