func main() {
for Args = os.Args[1:]; Args != nil && len(Args) > 0 && Args[0][0] == '-'; Args = Args[1:] {
switch Args[0] {
case "--no-color":
color = false
slog.DisableColor()
case "--log":
tracefile, err := os.OpenFile(Args[1], os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
if err == nil {
slog.TraceLogger = slog.NewTraceLogger(tracefile)
Args = Args[1:]
} else {
fmt.Printf("Could not open trace file %s", Args[1])
return
}
case "--file-change-delay":
if len(Args) > 1 {
delay, err := time.ParseDuration(Args[1])
if err != nil {
execManPage("zeus")
}
Args = Args[1:]
restarter.FileChangeWindow = delay
} else {
execManPage("zeus")
}
case "--version":
printVersion()
return
}
}
if len(Args) == 0 {
execManPage("zeus")
}
if generalHelpRequested(Args) {
execManPage("zeus")
} else if Args[0] == "help" {
commandSpecificHelp(Args)
} else if Args[0] == "version" {
printVersion()
} else if Args[0] == "start" {
zeusmaster.Run()
} else if Args[0] == "init" {
zeusInit()
} else if Args[0] == "commands" {
zeusCommands()
} else {
tree := config.BuildProcessTree()
for _, name := range tree.AllCommandsAndAliases() {
if Args[0] == name {
zeusclient.Run()
return
}
}
commandNotFound(Args[0])
}
}
func Run(color bool) {
if !color {
slog.DisableColor()
DisableErrorColor()
}
slog.StartingZeus()
var tree *ProcessTree = BuildProcessTree()
exitNow = make(chan int)
localMasterFile, remoteMasterFile, err := unixsocket.Socketpair(syscall.SOCK_DGRAM)
if err != nil {
panic(err)
}
localMasterSocket, err := unixsocket.NewUsockFromFile(localMasterFile)
if err != nil {
panic(err)
}
quit1 := make(chan bool)
quit2 := make(chan bool)
quit3 := make(chan bool)
go StartSlaveMonitor(tree, localMasterSocket, remoteMasterFile, quit1)
go StartClientHandler(tree, quit2)
go StartFileMonitor(tree, quit3)
quit := make(chan bool, 1)
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func() {
<-c
// FIXME: Unprecedented levels of jank, right here.
terminateComponents(quit1, quit2, quit3, quit)
}()
go func() {
exitStatus = <-exitNow
terminateComponents(quit1, quit2, quit3, quit)
}()
<-quit
<-quit
<-quit
os.Exit(exitStatus)
}
func Run(color bool) {
exitNow = make(chan int)
if !color {
slog.DisableColor()
}
startingZeus()
var tree *ProcessTree = BuildProcessTree()
quit1 := make(chan bool)
quit2 := make(chan bool)
quit3 := make(chan bool)
quit4 := make(chan bool)
go StartSlaveMonitor(tree, quit1)
go StartClientHandler(tree, quit2)
go StartFileMonitor(tree, quit3)
go StartStatusChart(tree, quit4)
quit := make(chan bool)
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func() {
<-c
terminateComponents(quit1, quit2, quit3, quit4, quit)
}()
go func() {
exitStatus = <-exitNow
terminateComponents(quit1, quit2, quit3, quit4, quit)
}()
<-quit
<-quit
<-quit
<-quit
os.Exit(exitStatus)
}
func main() {
if len(os.Args) == 1 {
execManPage("zeus")
}
var args []string
if os.Args[1] == "--no-color" {
color = false
slog.DisableColor()
args = os.Args[2:]
} else {
args = os.Args[1:]
}
if generalHelpRequested(args) {
execManPage("zeus")
} else if args[0] == "help" {
commandSpecificHelp(args)
} else if args[0] == "version" || args[0] == "--version" {
println("Zeus version " + zeusversion.VERSION)
} else if args[0] == "start" {
zeusmaster.Run()
} else if args[0] == "init" {
zeusInit()
} else if args[0] == "commands" {
zeusCommands()
} else {
tree := zeusmaster.BuildProcessTree()
for _, name := range tree.AllCommandsAndAliases() {
if args[0] == name {
zeusclient.Run()
return
}
}
commandNotFound(args[0])
}
}
func main() {
args := os.Args[1:]
configFile := "zeus.json"
fileChangeDelay := filemonitor.DefaultFileChangeDelay
for ; args != nil && len(args) > 0 && args[0][0] == '-'; args = args[1:] {
switch args[0] {
case "--no-color":
color = false
slog.DisableColor()
case "--log":
tracefile, err := os.OpenFile(args[1], os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
if err == nil {
slog.SetTraceLogger(slog.NewTraceLogger(tracefile))
args = args[1:]
} else {
fmt.Printf("Could not open trace file %s\n", args[1])
return
}
case "--file-change-delay":
if len(args) > 1 {
delay, err := time.ParseDuration(args[1])
if err != nil {
execManPage("zeus")
}
args = args[1:]
fileChangeDelay = delay
} else {
execManPage("zeus")
}
case "--config":
_, err := os.Stat(args[1])
if err != nil {
fmt.Printf("Config file doesn't exist: %s (%e)\n", args[1], err)
return
}
configFile = args[1]
args = args[1:]
case "--version":
printVersion()
return
}
}
if len(args) == 0 {
execManPage("zeus")
return
}
if generalHelpRequested(args) {
execManPage("zeus")
} else if args[0] == "help" {
commandSpecificHelp(args)
} else if args[0] == "version" {
printVersion()
} else if args[0] == "start" {
os.Exit(zeusmaster.Run(configFile, fileChangeDelay))
} else if args[0] == "init" {
zeusInit()
} else if args[0] == "commands" {
zeusCommands(configFile)
} else {
tree := config.BuildProcessTree(configFile, nil)
for _, name := range tree.AllCommandsAndAliases() {
if args[0] == name {
// Don't confuse the master by sending *full* args to
// it; just those that are not zeus-specific.
os.Exit(zeusclient.Run(args, os.Stdin, os.Stdout))
}
}
commandNotFound(args[0])
}
}
func doRun(color bool) int {
if !color {
slog.DisableColor()
DisableErrorColor()
}
if os.Getenv("RAILS_ENV") != "" {
println("Warning: Specifying a Rails environment via RAILS_ENV has no effect for commands run with zeus.")
}
master, slave, err := pty.Open()
if err != nil {
panic(err)
}
defer master.Close()
if ttyutils.IsTerminal(os.Stdout.Fd()) {
oldState, err := ttyutils.MakeTerminalRaw(os.Stdout.Fd())
if err != nil {
panic(err)
}
defer ttyutils.RestoreTerminalState(os.Stdout.Fd(), oldState)
}
ttyutils.MirrorWinsize(os.Stdout, master)
addr, err := net.ResolveUnixAddr("unixgram", zeusSockName)
if err != nil {
panic("Can't resolve server address")
}
conn, err := net.DialUnix("unix", nil, addr)
if err != nil {
ErrorCantConnectToMaster()
}
usock := unixsocket.NewUsock(conn)
msg := CreateCommandAndArgumentsMessage(os.Args[1], os.Args[2:])
usock.WriteMessage(msg)
usock.WriteFD(int(slave.Fd()))
slave.Close()
msg, err = usock.ReadMessage()
if err != nil {
panic(err)
}
parts := strings.Split(msg, "\000")
commandPid, err := strconv.Atoi(parts[0])
defer func() {
if commandPid > 0 {
// Just in case.
syscall.Kill(commandPid, 9)
}
}()
if err != nil {
panic(err)
}
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGWINCH, syscall.SIGCONT)
go func() {
for sig := range c {
if sig == syscall.SIGCONT {
syscall.Kill(commandPid, syscall.SIGCONT)
} else if sig == syscall.SIGWINCH {
ttyutils.MirrorWinsize(os.Stdout, master)
syscall.Kill(commandPid, syscall.SIGWINCH)
}
}
}()
var exitStatus int = -1
if len(parts) > 2 {
exitStatus, err = strconv.Atoi(parts[0])
if err != nil {
panic(err)
}
}
eof := make(chan bool)
go func() {
for {
buf := make([]byte, 1024)
n, err := master.Read(buf)
if err != nil {
eof <- true
break
}
os.Stdout.Write(buf[:n])
}
}()
go func() {
buf := make([]byte, 8192)
for {
n, err := os.Stdin.Read(buf)
if err != nil {
eof <- true
break
}
for i := 0; i < n; i++ {
switch buf[i] {
case sigInt:
syscall.Kill(commandPid, syscall.SIGINT)
case sigQuit:
syscall.Kill(commandPid, syscall.SIGQUIT)
case sigTstp:
syscall.Kill(commandPid, syscall.SIGTSTP)
syscall.Kill(os.Getpid(), syscall.SIGTSTP)
}
}
master.Write(buf[:n])
}
}()
<-eof
if exitStatus == -1 {
msg, err = usock.ReadMessage()
if err != nil {
panic(err)
}
parts := strings.Split(msg, "\000")
exitStatus, err = strconv.Atoi(parts[0])
if err != nil {
panic(err)
}
}
return exitStatus
}
func main() {
for Args = os.Args[1:]; Args != nil && len(Args) > 0 && Args[0][0] == '-'; Args = Args[1:] {
switch Args[0] {
case "--no-color":
color = false
slog.DisableColor()
case "--log":
tracefile, err := os.OpenFile(Args[1], os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
if err == nil {
slog.SetTraceLogger(slog.NewTraceLogger(tracefile))
Args = Args[1:]
} else {
fmt.Printf("Could not open trace file %s\n", Args[1])
return
}
case "--file-change-delay":
if len(Args) > 1 {
delay, err := time.ParseDuration(Args[1])
if err != nil {
execManPage("zeus")
}
Args = Args[1:]
restarter.FileChangeWindow = delay
} else {
execManPage("zeus")
}
case "--config":
_, err := os.Stat(Args[1])
if err != nil {
fmt.Printf("Config file doesn't exist: %s (%e)\n", Args[1], err)
return
}
config.ConfigFile = Args[1]
Args = Args[1:]
case "--version":
printVersion()
return
}
}
if len(Args) == 0 {
execManPage("zeus")
}
// Don't confuse the master by sending *full* args to it; just those that are
// not zeus-specific.
config.Args = Args
if generalHelpRequested(Args) {
execManPage("zeus")
} else if Args[0] == "help" {
commandSpecificHelp(Args)
} else if Args[0] == "version" {
printVersion()
} else if Args[0] == "start" {
zeusmaster.Run()
} else if Args[0] == "init" {
zeusInit()
} else if Args[0] == "commands" {
zeusCommands()
} else {
tree := config.BuildProcessTree()
for _, name := range tree.AllCommandsAndAliases() {
if Args[0] == name {
zeusclient.Run()
return
}
}
commandNotFound(Args[0])
}
}