954996e231
- Move from the old github.com/golang/glog to k8s.io/klog - klog as explicit InitFlags() so we add them as necessary - we update the other repositories that we vendor that made a similar change from glog to klog * github.com/kubernetes/repo-infra * k8s.io/gengo/ * k8s.io/kube-openapi/ * github.com/google/cadvisor - Entirely remove all references to glog - Fix some tests by explicit InitFlags in their init() methods Change-Id: I92db545ff36fcec83afe98f550c9e630098b3135
102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
// +build freebsd linux darwin
|
|
|
|
/*
|
|
Copyright 2017 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 util
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
"net/url"
|
|
"os"
|
|
"time"
|
|
|
|
"golang.org/x/sys/unix"
|
|
"k8s.io/klog"
|
|
)
|
|
|
|
const (
|
|
// unixProtocol is the network protocol of unix socket.
|
|
unixProtocol = "unix"
|
|
)
|
|
|
|
func CreateListener(endpoint string) (net.Listener, error) {
|
|
protocol, addr, err := parseEndpointWithFallbackProtocol(endpoint, unixProtocol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if protocol != unixProtocol {
|
|
return nil, fmt.Errorf("only support unix socket endpoint")
|
|
}
|
|
|
|
// Unlink to cleanup the previous socket file.
|
|
err = unix.Unlink(addr)
|
|
if err != nil && !os.IsNotExist(err) {
|
|
return nil, fmt.Errorf("failed to unlink socket file %q: %v", addr, err)
|
|
}
|
|
|
|
return net.Listen(protocol, addr)
|
|
}
|
|
|
|
func GetAddressAndDialer(endpoint string) (string, func(addr string, timeout time.Duration) (net.Conn, error), error) {
|
|
protocol, addr, err := parseEndpointWithFallbackProtocol(endpoint, unixProtocol)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
if protocol != unixProtocol {
|
|
return "", nil, fmt.Errorf("only support unix socket endpoint")
|
|
}
|
|
|
|
return addr, dial, nil
|
|
}
|
|
|
|
func dial(addr string, timeout time.Duration) (net.Conn, error) {
|
|
return net.DialTimeout(unixProtocol, addr, timeout)
|
|
}
|
|
|
|
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.Warningf("Using %q as endpoint is deprecated, please consider using full url format %q.", endpoint, 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)
|
|
}
|
|
}
|