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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* | ||
| Copyright 2017 The Kubernetes Authors. | ||
| This was copied out of kubernetes source to avoid pulling too | ||
| many dependencies with the full kubernetes source code. | ||
| This is based on the following kubernetes file: | ||
| https://github.com/kubernetes/kubernetes/blob/52457842d155743f0e3fc57ade87251cca37d375/pkg/kubelet/apis/podresources/client.go#L56 | ||
| 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 cpuset | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "google.golang.org/grpc" | ||
| "k8s.io/klog/v2" | ||
| "k8s.io/kubelet/pkg/apis/podresources/v1" | ||
| "net" | ||
| "net/url" | ||
| "time" | ||
| ) | ||
|
|
||
| // GetV1Client returns a client for the PodResourcesLister grpc service | ||
| // This was copied from kubelet sources as per the comment there: | ||
| // | ||
| // Quote: | ||
| // Note: Consumers of the pod resources API should not be importing this package. | ||
| // They should copy paste the function in their project. | ||
| func GetV1Client(socket string, connectionTimeout time.Duration, maxMsgSize int) (v1.PodResourcesListerClient, *grpc.ClientConn, error) { | ||
| addr, dialer, err := GetAddressAndDialer(socket) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| ctx, cancel := context.WithTimeout(context.Background(), connectionTimeout) | ||
| defer cancel() | ||
|
|
||
| conn, err := grpc.DialContext(ctx, addr, grpc.WithInsecure(), grpc.WithContextDialer(dialer), grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(maxMsgSize))) | ||
| if err != nil { | ||
| return nil, nil, fmt.Errorf("error dialing socket %s: %v", socket, err) | ||
| } | ||
| return v1.NewPodResourcesListerClient(conn), conn, nil | ||
| } | ||
|
|
||
| // GetAddressAndDialer returns the address parsed from the given endpoint and a context dialer. | ||
| func GetAddressAndDialer(endpoint string) (string, func(ctx context.Context, addr string) (net.Conn, error), error) { | ||
| protocol, addr, err := parseEndpointWithFallbackProtocol(endpoint, "unix") | ||
| if err != nil { | ||
| return "", nil, err | ||
| } | ||
| if protocol != "unix" { | ||
| return "", nil, fmt.Errorf("only support unix socket endpoint") | ||
| } | ||
|
|
||
| return addr, dial, nil | ||
| } | ||
|
|
||
| func dial(ctx context.Context, addr string) (net.Conn, error) { | ||
| return (&net.Dialer{}).DialContext(ctx, "unix", addr) | ||
| } | ||
|
|
||
| func parseEndpointWithFallbackProtocol(endpoint string, fallbackProtocol string) (protocol string, addr string, err error) { | ||
| if protocol, addr, err = parseEndpoint(endpoint); err != nil && protocol == "" { | ||
| fallbackEndpoint := fallbackProtocol + "://" + endpoint | ||
| protocol, addr, err = parseEndpoint(fallbackEndpoint) | ||
| if err == nil { | ||
| klog.InfoS("Using this endpoint is deprecated, please consider using full URL format", "endpoint", endpoint, "URL", fallbackEndpoint) | ||
| } | ||
| } | ||
| return | ||
| } | ||
|
|
||
| func parseEndpoint(endpoint string) (string, string, error) { | ||
| u, err := url.Parse(endpoint) | ||
| if err != nil { | ||
| return "", "", err | ||
| } | ||
|
|
||
| switch u.Scheme { | ||
| case "tcp": | ||
| return "tcp", u.Host, nil | ||
|
|
||
| case "unix": | ||
| return "unix", u.Path, nil | ||
|
|
||
| case "": | ||
| return "", "", fmt.Errorf("using %q as endpoint is deprecated, please consider using full url format", endpoint) | ||
|
|
||
| default: | ||
| return u.Scheme, "", fmt.Errorf("protocol %q not supported", u.Scheme) | ||
| } | ||
| } |
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