9cfbd3b786
Added syslogs Added support for symlinks Relocated make commands in a local Makefile Dumping stats on index instead of paths Updated README Added go.mod and go.sum with relevant dependencies for the module Type: fix Change-Id: I2c91317939b2f4d765771ab7038372ae27d3109d Signed-off-by: Arthur de Kerhor <arthurdekerhor@gmail.com>
106 lines
2.7 KiB
Go
106 lines
2.7 KiB
Go
/*
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* Copyright (c) 2021 Cisco Systems and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright 2016 the Go-FUSE Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style
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* license that can be found in the LICENSE file.
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*/
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// This file is the main program driver to mount the stats segment filesystem.
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package main
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import (
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"flag"
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"fmt"
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"log"
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"log/syslog"
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"os"
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"os/signal"
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"runtime"
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"strings"
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"syscall"
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"git.fd.io/govpp.git/adapter/statsclient"
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"git.fd.io/govpp.git/core"
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"github.com/hanwen/go-fuse/v2/fs"
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)
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func LogMsg(msg string) {
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fmt.Fprint(os.Stderr, msg)
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log.Print(msg)
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}
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func main() {
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syslogger, err := syslog.New(syslog.LOG_ERR|syslog.LOG_DAEMON, "statsfs")
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if err != nil {
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log.Fatalln(err)
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}
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log.SetOutput(syslogger)
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statsSocket := flag.String("socket", statsclient.DefaultSocketName, "Path to VPP stats socket")
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debug := flag.Bool("debug", false, "print debugging messages.")
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flag.Parse()
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if flag.NArg() < 1 {
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LogMsg(fmt.Sprintf("usage: %s MOUNTPOINT\n", os.Args[0]))
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os.Exit(2)
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}
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//Conection to the stat segment socket.
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sc := statsclient.NewStatsClient(*statsSocket)
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fmt.Println("Waiting for the VPP socket to be available. Be sure a VPP instance is running.")
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c, err := core.ConnectStats(sc)
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if err != nil {
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LogMsg(fmt.Sprintf("Failed to connect to the stats socket: %v\n", err))
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os.Exit(1)
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}
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defer c.Disconnect()
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fmt.Printf("Connected to the socket\n")
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//Creating the filesystem instance
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root, err := NewStatsFileSystem(sc)
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if err != nil {
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LogMsg(fmt.Sprintf("NewStatsFileSystem failed: %v\n", err))
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os.Exit(1)
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}
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//Mounting the filesystem.
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opts := &fs.Options{}
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opts.Debug = *debug
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opts.AllowOther = true
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server, err := fs.Mount(flag.Arg(0), root, opts)
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if err != nil {
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LogMsg(fmt.Sprintf("Mount fail: %v\n", err))
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os.Exit(1)
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}
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sigs := make(chan os.Signal)
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signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
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fmt.Printf("Successfully mounted the file system in directory: %s\n", flag.Arg(0))
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runtime.GC()
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for {
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go server.Wait()
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<-sigs
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fmt.Println("Unmounting...")
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err := server.Unmount()
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if err == nil || !strings.Contains(err.Error(), "Device or resource busy") {
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break
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}
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LogMsg(fmt.Sprintf("Unmount fail: %v\n", err))
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}
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}
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