git subrepo clone (merge) https://github.com/kubernetes-incubator/metrics-server.git metrics-server
subrepo:
subdir: "metrics-server"
merged: "92d8412"
upstream:
origin: "https://github.com/kubernetes-incubator/metrics-server.git"
branch: "master"
commit: "92d8412"
git-subrepo:
version: "0.4.0"
origin: "???"
commit: "???"
diff --git a/metrics-server/vendor/google.golang.org/grpc/keepalive/keepalive.go b/metrics-server/vendor/google.golang.org/grpc/keepalive/keepalive.go
new file mode 100644
index 0000000..f8adc7e
--- /dev/null
+++ b/metrics-server/vendor/google.golang.org/grpc/keepalive/keepalive.go
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package keepalive defines configurable parameters for point-to-point healthcheck.
+package keepalive
+
+import (
+ "time"
+)
+
+// ClientParameters is used to set keepalive parameters on the client-side.
+// These configure how the client will actively probe to notice when a connection is broken
+// and send pings so intermediaries will be aware of the liveness of the connection.
+// Make sure these parameters are set in coordination with the keepalive policy on the server,
+// as incompatible settings can result in closing of connection.
+type ClientParameters struct {
+ // After a duration of this time if the client doesn't see any activity it pings the server to see if the transport is still alive.
+ Time time.Duration // The current default value is infinity.
+ // After having pinged for keepalive check, the client waits for a duration of Timeout and if no activity is seen even after that
+ // the connection is closed.
+ Timeout time.Duration // The current default value is 20 seconds.
+ // If true, client runs keepalive checks even with no active RPCs.
+ PermitWithoutStream bool // false by default.
+}
+
+// ServerParameters is used to set keepalive and max-age parameters on the server-side.
+type ServerParameters struct {
+ // MaxConnectionIdle is a duration for the amount of time after which an idle connection would be closed by sending a GoAway.
+ // Idleness duration is defined since the most recent time the number of outstanding RPCs became zero or the connection establishment.
+ MaxConnectionIdle time.Duration // The current default value is infinity.
+ // MaxConnectionAge is a duration for the maximum amount of time a connection may exist before it will be closed by sending a GoAway.
+ // A random jitter of +/-10% will be added to MaxConnectionAge to spread out connection storms.
+ MaxConnectionAge time.Duration // The current default value is infinity.
+ // MaxConnectinoAgeGrace is an additive period after MaxConnectionAge after which the connection will be forcibly closed.
+ MaxConnectionAgeGrace time.Duration // The current default value is infinity.
+ // After a duration of this time if the server doesn't see any activity it pings the client to see if the transport is still alive.
+ Time time.Duration // The current default value is 2 hours.
+ // After having pinged for keepalive check, the server waits for a duration of Timeout and if no activity is seen even after that
+ // the connection is closed.
+ Timeout time.Duration // The current default value is 20 seconds.
+}
+
+// EnforcementPolicy is used to set keepalive enforcement policy on the server-side.
+// Server will close connection with a client that violates this policy.
+type EnforcementPolicy struct {
+ // MinTime is the minimum amount of time a client should wait before sending a keepalive ping.
+ MinTime time.Duration // The current default value is 5 minutes.
+ // If true, server expects keepalive pings even when there are no active streams(RPCs).
+ PermitWithoutStream bool // false by default.
+}