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/pkg/sources/summary/addrs.go b/metrics-server/pkg/sources/summary/addrs.go
new file mode 100644
index 0000000..49e7fc1
--- /dev/null
+++ b/metrics-server/pkg/sources/summary/addrs.go
@@ -0,0 +1,76 @@
+// Copyright 2018 The Kubernetes 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 summary
+
+import (
+ "fmt"
+
+ corev1 "k8s.io/api/core/v1"
+)
+
+var (
+ // DefaultAddressTypePriority is the default node address type
+ // priority list, as taken from the Kubernetes API server options.
+ // In general, we prefer overrides to others, internal to external,
+ // and DNS to IPs.
+ DefaultAddressTypePriority = []corev1.NodeAddressType{
+ // --override-hostname
+ corev1.NodeHostName,
+
+ // internal, preferring DNS if reported
+ corev1.NodeInternalDNS,
+ corev1.NodeInternalIP,
+
+ // external, preferring DNS if reported
+ corev1.NodeExternalDNS,
+ corev1.NodeExternalIP,
+ }
+)
+
+// NodeAddressResolver knows how to find the preferred connection
+// address for a given node.
+type NodeAddressResolver interface {
+ // NodeAddress finds the preferred address to use to connect to
+ // the given node.
+ NodeAddress(node *corev1.Node) (address string, err error)
+}
+
+// prioNodeAddrResolver finds node addresses according to a list of
+// priorities of types of addresses.
+type prioNodeAddrResolver struct {
+ addrTypePriority []corev1.NodeAddressType
+}
+
+func (r *prioNodeAddrResolver) NodeAddress(node *corev1.Node) (string, error) {
+ // adapted from k8s.io/kubernetes/pkg/util/node
+ for _, addrType := range r.addrTypePriority {
+ for _, addr := range node.Status.Addresses {
+ if addr.Type == addrType {
+ return addr.Address, nil
+ }
+ }
+ }
+
+ return "", fmt.Errorf("node %s had no addresses that matched types %v", node.Name, r.addrTypePriority)
+}
+
+// NewPriorityNodeAddressResolver creates a new NodeAddressResolver that resolves
+// addresses first based on a list of prioritized address types, then based on
+// address order (first to last) within a particular address type.
+func NewPriorityNodeAddressResolver(typePriority []corev1.NodeAddressType) NodeAddressResolver {
+ return &prioNodeAddrResolver{
+ addrTypePriority: typePriority,
+ }
+}