feat(kuma-cp): add HealthCheck unary endpoint (#7815)

Signed-off-by: Mike Beaumont <[email protected]>
kumahq · Sep 27, 2023 · 42cfb34 · 42cfb34
1 parent a3bbdab
commit 42cfb34
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Showing 8 changed files with 569 additions and 269 deletions.
diff --git a/api/mesh/v1alpha1/kds.pb.go b/api/mesh/v1alpha1/kds.pb.go
diff --git a/api/mesh/v1alpha1/kds.proto b/api/mesh/v1alpha1/kds.proto
@@ -22,6 +22,12 @@ message KumaResource {
   google.protobuf.Any spec = 2;
 }
 
+message ZoneHealthCheckRequest {
+}
+
+message ZoneHealthCheckResponse {
+}
+
 service GlobalKDSService {
   // StreamXDSConfigs is logically a service exposed by Zone CP so Global CP can
   // execute Config Dumps. It is however represented by bi-directional streaming
@@ -37,6 +43,9 @@ service GlobalKDSService {
   // bi-directional streaming to leverage existing connection from Zone CP to
   // Global CP.
   rpc StreamClusters(stream ClustersResponse) returns (stream ClustersRequest);
+  // HealthCheck allows us to implement a health check that works across
+  // proxies, unlike HTTP/2 PING frames.
+  rpc HealthCheck(ZoneHealthCheckRequest) returns (ZoneHealthCheckResponse);
 }
 
 // KDSSyncService is a service exposed by the control-plane for the

diff --git a/api/mesh/v1alpha1/kds_grpc.pb.go b/api/mesh/v1alpha1/kds_grpc.pb.go