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chore(package): remove jacobsa's daemonize in depends

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Signed-off-by: slasher <shenjie1@oppo.com>
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slasher 2023-06-16 14:28:04 +08:00 committed by 梁曟風
parent cde3955e5a
commit 24e766dd7b
9 changed files with 31 additions and 484 deletions
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202
depends/jacobsa/daemonize/LICENSE
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@ -1,202 +0,0 @@
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274
depends/jacobsa/daemonize/daemonize.go
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@ -1,274 +0,0 @@
// Copyright 2015 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.
// Helper code for starting a daemon process.
//
// This package assumes that the user invokes a tool, which invokes a daemon
// process. Though the tool starts the daemon process with stdin, stdout, and
// stderr closed (using Run), the daemon should be able to communicate status
// to the user while it starts up (using StatusWriter), causing the tool to
// exit in success or failure only when it is clear whether the daemon has
// sucessfully started (which it signal using SignalOutcome).
package daemonize
import (
"encoding/gob"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"os/exec"
"strconv"
"syscall"
)
// The name of an environment variable used to communicate a file descriptor
// set up by Run to the daemon process. Gob encoding is used to communicate
// back to Run.
const envVar = "DAEMONIZE_STATUS_FD"
// A message containing logging output while starting the daemon.
type logMsg struct {
Msg []byte
}
// A message indicating the outcome of starting the daemon. The receiver
// ignores further messages.
type outcomeMsg struct {
Successful bool
// Meaningful only if !Successful.
ErrorMsg string
}
func init() {
gob.Register(logMsg{})
gob.Register(outcomeMsg{})
}
// The file provded to this process via the environment variable, or nil if
// none.
var gFile *os.File
// A gob encoder that writes into gFile, or nil.
var gGobEncoder *gob.Encoder
func init() {
// Is the environment variable set?
fdStr, ok := os.LookupEnv(envVar)
if !ok {
return
}
// Parse the file descriptor.
fd, err := strconv.ParseUint(fdStr, 10, 32)
if err != nil {
log.Fatalf("Couldn't parse %s value %q: %v", envVar, fdStr, err)
}
// Set up the file and the encoder that wraps it.
gFile = os.NewFile(uintptr(fd), envVar)
gGobEncoder = gob.NewEncoder(gFile)
}
// Send the supplied message as an interface{}, matching the decoder.
func sendMsg(msg interface{}) (err error) {
err = gGobEncoder.Encode(&msg)
return
}
// For use by the daemon: signal an outcome back to Run in the invoking tool,
// causing it to return. Do nothing if the process wasn't invoked with Run.
func SignalOutcome(outcome error) (err error) {
// Is there anything to do?
if gGobEncoder == nil {
return
}
// Write out the outcome.
msg := &outcomeMsg{
Successful: outcome == nil,
}
if !msg.Successful {
msg.ErrorMsg = outcome.Error()
}
err = sendMsg(msg)
return
}
// An io.Writer that sends logMsg messages over gGobEncoder.
type logMsgWriter struct {
}
func (w *logMsgWriter) Write(p []byte) (n int, err error) {
msg := &logMsg{
Msg: p,
}
err = sendMsg(msg)
if err != nil {
return
}
n = len(p)
return
}
// For use by the daemon: the writer that should be used for logging status
// messages while in the process of starting up. The writer must not be written
// to after calling SignalOutcome.
//
// Set to a reasonable default if the process wasn't invoked by a call to Run.
var StatusWriter io.Writer
func init() {
if gGobEncoder != nil {
StatusWriter = &logMsgWriter{}
} else {
StatusWriter = os.Stderr
}
}
// Invoke the daemon with the supplied arguments, waiting until it successfully
// starts up or reports that is has failed. Write status updates while starting
// into the supplied writer (which may be nil for silence). Return nil only if
// it starts successfully.
func Run(
path string,
args []string,
env []string,
status io.Writer) (err error) {
if status == nil {
status = ioutil.Discard
}
// Set up the pipe that we will hand to the daemon.
pipeR, pipeW, err := os.Pipe()
if err != nil {
err = fmt.Errorf("Pipe: %v", err)
return
}
// Attempt to start the daemon process. If we encounter an error in so doing,
// write it to the channel.
startProcessErr := make(chan error, 1)
go func() {
defer pipeW.Close()
err := startProcess(path, args, env, pipeW)
if err != nil {
startProcessErr <- err
}
}()
// Read communication from the daemon from the pipe, writing nil into the
// channel only if the startup succeeds.
readFromProcessOutcome := make(chan error, 1)
go func() {
defer pipeR.Close()
readFromProcessOutcome <- readFromProcess(pipeR, status)
}()
// Wait for a result from one of the above.
select {
case err = <-startProcessErr:
err = fmt.Errorf("startProcess: %v", err)
return
case err = <-readFromProcessOutcome:
if err == nil {
// All is good.
return
}
err = fmt.Errorf("readFromProcess: %v", err)
return
}
}
// Start the daemon process, handing it the supplied pipe for communication. Do
// not wait for it to return.
func startProcess(
path string,
args []string,
env []string,
pipeW *os.File) (err error) {
cmd := exec.Command(path)
cmd.Args = append(cmd.Args, args...)
cmd.Env = append(cmd.Env, env...)
cmd.ExtraFiles = []*os.File{pipeW}
// Change working directories so that we don't prevent unmounting of the
// volume of our current working directory.
cmd.Dir = "/"
// Call setsid after forking in order to avoid being killed when the user
// logs out.
cmd.SysProcAttr = &syscall.SysProcAttr{
Setsid: true,
}
// Send along the write end of the pipe.
cmd.Env = append(cmd.Env, fmt.Sprintf("%s=3", envVar))
// Start. Clean up in the background, ignoring errors.
err = cmd.Start()
go cmd.Wait()
return
}
// Process communication from a daemon subprocess. Write log messages to the
// supplied writer (which must be non-nil). Return nil only if the startup
// succeeds.
func readFromProcess(
r io.Reader,
status io.Writer) (err error) {
decoder := gob.NewDecoder(r)
for {
// Read a message.
var msg interface{}
err = decoder.Decode(&msg)
if err != nil {
err = fmt.Errorf("Decode: %v", err)
return
}
// Handle the message.
switch msg := msg.(type) {
case logMsg:
_, err = status.Write(msg.Msg)
if err != nil {
err = fmt.Errorf("status.Write: %v", err)
return
}
case outcomeMsg:
if msg.Successful {
return
}
err = fmt.Errorf("sub-process: %s", msg.ErrorMsg)
return
default:
err = fmt.Errorf("Unhandled message type: %T", msg)
return
}
}
}

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depends/jacobsa/daemonize/go.mod
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@ -1,3 +0,0 @@
module github.com/jacobsa/daemonize
go 1.16

3
go.mod
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@ -3,7 +3,6 @@ module github.com/cubefs/cubefs
go 1.17
replace (
github.com/jacobsa/daemonize => ./depends/jacobsa/daemonize
github.com/jacobsa/fuse => ./depends/jacobsa/fuse
github.com/spf13/cobra => ./depends/spf13/cobra
)
@ -27,7 +26,7 @@ require (
github.com/gorilla/mux v1.8.0
github.com/hashicorp/consul/api v1.15.2
github.com/hashicorp/golang-lru v0.5.4
github.com/jacobsa/daemonize v0.0.0-00010101000000-000000000000
github.com/jacobsa/daemonize v0.0.0-20160101105449-e460293e890f
github.com/julienschmidt/httprouter v1.3.0
github.com/klauspost/reedsolomon v1.11.7
github.com/opentracing/opentracing-go v1.2.0

2
go.sum
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@ -318,6 +318,8 @@ github.com/hinshun/vt10x v0.0.0-20180809195222-d55458df857c/go.mod h1:DqJ97dSdRW
github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/jacobsa/daemonize v0.0.0-20160101105449-e460293e890f h1:X+tnaqoCcBgAwSTJtoYW6p0qKiuPyMfofEHEFUf2kdU=
github.com/jacobsa/daemonize v0.0.0-20160101105449-e460293e890f/go.mod h1:Ip4fOwzCrnDVuluHBd7FXIMb7SHOKfkt9/UDrYSZvqI=
github.com/jcmturner/aescts/v2 v2.0.0 h1:9YKLH6ey7H4eDBXW8khjYslgyqG2xZikXP0EQFKrle8=
github.com/jcmturner/aescts/v2 v2.0.0/go.mod h1:AiaICIRyfYg35RUkr8yESTqvSy7csK90qZ5xfvvsoNs=
github.com/jcmturner/dnsutils/v2 v2.0.0 h1:lltnkeZGL0wILNvrNiVCR6Ro5PGU/SeBvVO/8c/iPbo=

24
vendor/github.com/jacobsa/daemonize/.gitignore generated vendored Normal file
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@ -0,0 +1,24 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof

1
vendor/github.com/spf13/cobra/command_notwin.go generated vendored
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@ -1,3 +1,4 @@
//go:build !windows
// +build !windows
package cobra

1
vendor/github.com/spf13/cobra/command_win.go generated vendored
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@ -1,3 +1,4 @@
//go:build windows
// +build windows
package cobra

5
vendor/modules.txt vendored
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@ -199,8 +199,8 @@ github.com/hashicorp/serf/coordinate
# github.com/inconshreveable/mousetrap v1.0.0
## explicit
github.com/inconshreveable/mousetrap
# github.com/jacobsa/daemonize v0.0.0-00010101000000-000000000000 => ./depends/jacobsa/daemonize
## explicit; go 1.16
# github.com/jacobsa/daemonize v0.0.0-20160101105449-e460293e890f
## explicit
github.com/jacobsa/daemonize
# github.com/jcmturner/aescts/v2 v2.0.0
## explicit; go 1.13
@ -501,6 +501,5 @@ gopkg.in/yaml.v2
# gopkg.in/yaml.v3 v3.0.1
## explicit
gopkg.in/yaml.v3
# github.com/jacobsa/daemonize => ./depends/jacobsa/daemonize
# github.com/jacobsa/fuse => ./depends/jacobsa/fuse
# github.com/spf13/cobra => ./depends/spf13/cobra