git/contrib/persistent-https/main.go

83 lines
2.4 KiB
Go

// Copyright 2012 Google Inc. All Rights Reserved.
//
// 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.
// The git-remote-persistent-https binary speeds up SSL operations by running
// a daemon job that keeps a connection open to a Git server. This ensures the
// git-remote-persistent-https--proxy is running and delegating execution
// to the git-remote-http binary with the http_proxy set to the daemon job.
// A unix socket is used to authenticate the proxy and discover the
// HTTP address. Note, both the client and proxy are included in the same
// binary.
package main
import (
"flag"
"fmt"
"log"
"os"
"strings"
"time"
)
var (
forceProxy = flag.Bool("proxy", false, "Whether to start the binary in proxy mode")
proxyBin = flag.String("proxy_bin", "git-remote-persistent-https--proxy", "Path to the proxy binary")
printLabel = flag.Bool("print_label", false, "Prints the build label for the binary")
// Variable that should be defined through the -X linker flag.
_BUILD_EMBED_LABEL string
)
const (
defaultMaxIdleDuration = 24 * time.Hour
defaultPollUpdateInterval = 15 * time.Minute
)
func main() {
flag.Parse()
if *printLabel {
// Short circuit execution to print the build label
fmt.Println(buildLabel())
return
}
var err error
if *forceProxy || strings.HasSuffix(os.Args[0], "--proxy") {
log.SetPrefix("git-remote-persistent-https--proxy: ")
proxy := &Proxy{
BuildLabel: buildLabel(),
MaxIdleDuration: defaultMaxIdleDuration,
PollUpdateInterval: defaultPollUpdateInterval,
}
err = proxy.Run()
} else {
log.SetPrefix("git-remote-persistent-https: ")
client := &Client{
ProxyBin: *proxyBin,
Args: flag.Args(),
}
err = client.Run()
}
if err != nil {
log.Fatalln(err)
}
}
func buildLabel() string {
if _BUILD_EMBED_LABEL == "" {
log.Println(`unlabeled build; build with "make" to label`)
}
return _BUILD_EMBED_LABEL
}