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shim.go
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shim.go
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//
// Copyright (c) 2017 Intel Corporation
//
// 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 main
import (
"flag"
"fmt"
"io/ioutil"
"net/url"
"os"
"os/signal"
"path/filepath"
"syscall"
)
const logFileName = "mock_shim.log"
const dirMode = os.FileMode(0750)
const numArgsExpected = 2
func main() {
logDirPath, err := ioutil.TempDir("", "cc-shim-")
if err != nil {
fmt.Printf("ERROR: Could not generate temporary log directory path: %s\n", err)
os.Exit(1)
}
if err := os.MkdirAll(logDirPath, dirMode); err != nil {
fmt.Printf("ERROR: Could not create temporary log directory %q: %s\n", logDirPath, err)
os.Exit(1)
}
logFilePath := filepath.Join(logDirPath, logFileName)
f, err := os.Create(logFilePath)
if err != nil {
fmt.Printf("ERROR: Could not create temporary log file %q: %s\n", logFilePath, err)
os.Exit(1)
}
defer f.Close()
tokenFlag := flag.String("t", "", "Proxy token")
urlFlag := flag.String("u", "", "Proxy URL")
flag.Parse()
fmt.Fprintf(f, "INFO: Token = %s\n", *tokenFlag)
fmt.Fprintf(f, "INFO: URL = %s\n", *urlFlag)
if *tokenFlag == "" {
fmt.Fprintf(f, "ERROR: Token should not be empty\n")
os.Exit(1)
}
if *urlFlag == "" {
fmt.Fprintf(f, "ERROR: URL should not be empty\n")
os.Exit(1)
}
if _, err := url.Parse(*urlFlag); err != nil {
fmt.Fprintf(f, "ERROR: Could not parse the URL %q: %s\n", *urlFlag, err)
os.Exit(1)
}
exitShim := make(chan os.Signal)
signal.Notify(exitShim, syscall.SIGUSR1)
<-exitShim
fmt.Fprintf(f, "INFO: Shim exited properly\n")
}