func main() {
opts := optparse.Parser(
"Usage: ampzero </path/to/instance/directory> [options]\n",
"ampzero 0.0.0")
debug := opts.Bool([]string{"-d", "--debug"}, false,
"enable debug mode")
frontendHost := opts.StringConfig("frontend-host", "",
"the host to bind the Frontend Server to")
frontendPort := opts.IntConfig("frontend-port", 9040,
"the port to bind the Frontend Server to [default: 9040]")
frontendTLS := opts.BoolConfig("frontend-tls", false,
"use TLS (HTTPS) for the Frontend Server [default: false]")
certFile := opts.StringConfig("cert-file", "cert/frontend.cert",
"the path to the TLS certificate [default: cert/frontend.cert]")
keyFile := opts.StringConfig("key-file", "cert/frontend.key",
"the path to the TLS key [default: cert/frontend.key]")
officialHost := opts.StringConfig("official-host", "",
"if set, limit the Frontend Server to the specified host")
noRedirect := opts.BoolConfig("no-redirect", false,
"disable the HTTP Redirector [default: false]")
httpHost := opts.StringConfig("http-host", "",
"the host to bind the HTTP Redirector to")
httpPort := opts.IntConfig("http-port", 9080,
"the port to bind the HTTP Redirector to [default: 9080]")
redirectURL := opts.StringConfig("redirect-url", "",
"the URL that the HTTP Redirector redirects to")
gaeHost := opts.StringConfig("gae-host", "localhost",
"the App Engine host to connect to [default: localhost]")
gaePort := opts.IntConfig("gae-port", 8080,
"the App Engine port to connect to [default: 8080]")
gaeTLS := opts.BoolConfig("gae-tls", false,
"use TLS when connecting to App Engine [default: false]")
logRotate := opts.StringConfig("log-rotate", "never",
"specify one of 'hourly', 'daily' or 'never' [default: never]")
noConsoleLog := opts.BoolConfig("no-console-log", false,
"disable logging to stdout/stderr [default: false]")
os.Args[0] = "ampzero"
args := opts.Parse(os.Args)
var instanceDirectory string
if len(args) >= 1 {
if args[0] == "help" {
opts.PrintUsage()
runtime.Exit(0)
}
instanceDirectory = path.Clean(args[0])
} else {
opts.PrintUsage()
runtime.Exit(0)
}
rootInfo, err := os.Stat(instanceDirectory)
if err == nil {
if !rootInfo.IsDirectory() {
runtime.Error("ERROR: %q is not a directory\n", instanceDirectory)
}
} else {
runtime.Error("ERROR: %s\n", err)
}
configPath := path.Join(instanceDirectory, "ampzero.yaml")
_, err = os.Stat(configPath)
if err == nil {
err = opts.ParseConfig(configPath, os.Args)
if err != nil {
runtime.Error("ERROR: %s\n", err)
}
}
logPath := path.Join(instanceDirectory, "log")
err = os.MkdirAll(logPath, 0755)
if err != nil {
runtime.Error("ERROR: %s\n", err)
}
runPath := path.Join(instanceDirectory, "run")
err = os.MkdirAll(runPath, 0755)
if err != nil {
runtime.Error("ERROR: %s\n", err)
}
_, err = runtime.GetLock(runPath, "ampzero")
if err != nil {
runtime.Error("ERROR: Couldn't successfully acquire a process lock:\n\n\t%s\n\n", err)
}
go runtime.CreatePidFile(path.Join(runPath, "ampzero.pid"))
if *frontendTLS {
var exitProcess bool
if len(*certFile) == 0 {
fmt.Printf("ERROR: The cert-file config value hasn't been specified.\n")
exitProcess = true
}
if len(*keyFile) == 0 {
fmt.Printf("ERROR: The key-file config value hasn't been specified.\n")
exitProcess = true
}
if exitProcess {
runtime.Exit(1)
}
}
// Initialise the Ampify runtime -- which will run ``ampzero`` on multiple
// processors if possible.
runtime.Init()
// Initialise the TLS config.
tlsconf.Init()
debugMode = *debug
gaeAddr := fmt.Sprintf("%s:%d", *gaeHost, *gaePort)
frontendAddr := fmt.Sprintf("%s:%d", *frontendHost, *frontendPort)
frontendConn, err := net.Listen("tcp", frontendAddr)
if err != nil {
runtime.Error("ERROR: Cannot listen on %s: %v\n", frontendAddr, err)
}
var frontendListener net.Listener
if *frontendTLS {
certPath := path.Join(instanceDirectory, *certFile)
keyPath := path.Join(instanceDirectory, *keyFile)
tlsConfig := &tls.Config{
NextProtos: []string{"http/1.1"},
Rand: rand.Reader,
Time: time.Seconds,
}
tlsConfig.Certificates = make([]tls.Certificate, 1)
tlsConfig.Certificates[0], err = tls.LoadX509KeyPair(certPath, keyPath)
if err != nil {
runtime.Error("ERROR: Couldn't load certificate/key pair: %s\n", err)
}
frontendListener = tls.NewListener(frontendConn, tlsConfig)
} else {
frontendListener = frontendConn
}
var enforceHost bool
var officialRedirectURL string
var officialRedirectHTML []byte
if len(*officialHost) != 0 {
enforceHost = true
if *frontendTLS {
officialRedirectURL = "https://" + *officialHost + "/"
} else {
officialRedirectURL = "http://" + *officialHost + "/"
}
officialRedirectHTML = []byte(fmt.Sprintf(redirectHTML, officialRedirectURL))
}
var frontendScheme, frontendAddrURL, httpAddrURL string
if *frontendTLS {
frontendScheme = "https://"
} else {
frontendScheme = "http://"
}
if len(*frontendHost) == 0 {
frontendAddrURL = fmt.Sprintf("%slocalhost:%d", frontendScheme, *frontendPort)
} else {
frontendAddrURL = fmt.Sprintf("%s%s:%d", frontendScheme, *frontendHost, *frontendPort)
}
if len(*httpHost) == 0 {
httpAddrURL = fmt.Sprintf("http://localhost:%d", *httpPort)
} else {
httpAddrURL = fmt.Sprintf("http://%s:%d", *httpHost, *httpPort)
}
var httpAddr string
var httpListener net.Listener
if !*noRedirect {
if *redirectURL == "" {
*redirectURL = frontendAddrURL
}
httpAddr = fmt.Sprintf("%s:%d", *httpHost, *httpPort)
httpListener, err = net.Listen("tcp", httpAddr)
if err != nil {
runtime.Error("ERROR: Cannot listen on %s: %v\n", httpAddr, err)
}
}
var rotate int
switch *logRotate {
case "daily":
rotate = logging.RotateDaily
case "hourly":
rotate = logging.RotateHourly
case "never":
rotate = logging.RotateNever
default:
runtime.Error("ERROR: Unknown log rotation format %q\n", *logRotate)
}
if !*noConsoleLog {
logging.AddConsoleLogger()
logging.AddFilter(filterRequestLog)
}
_, err = logging.AddFileLogger("ampzero", logPath, rotate)
if err != nil {
runtime.Error("ERROR: Couldn't initialise logfile: %s\n", err)
}
fmt.Printf("Running ampzero with %d CPUs:\n", runtime.CPUCount)
if !*noRedirect {
redirector := &Redirector{url: *redirectURL}
go func() {
err = http.Serve(httpListener, redirector)
if err != nil {
runtime.Error("ERROR serving HTTP Redirector: %s\n", err)
}
}()
fmt.Printf("* HTTP Redirector running on %s -> %s\n", httpAddrURL, *redirectURL)
}
frontend := &Frontend{
gaeAddr: gaeAddr,
gaeHost: *gaeHost,
gaeTLS: *gaeTLS,
officialHost: *officialHost,
officialRedirectURL: officialRedirectURL,
officialRedirectHTML: officialRedirectHTML,
enforceHost: enforceHost,
}
fmt.Printf("* Frontend Server running on %s\n", frontendAddrURL)
err = http.Serve(frontendListener, frontend)
if err != nil {
runtime.Error("ERROR serving Frontend Server: %s\n", err)
}
}
func DefaultOpts(name string, opts *optparse.OptionParser, argv []string, consoleFilter logging.Filter) (bool, string, string) {
var (
configPath string
instanceDirectory string
err os.Error
)
debug := opts.Bool([]string{"-d", "--debug"}, false,
"enable debug mode")
genConfig := opts.Bool([]string{"-g", "--gen-config"}, false,
"show the default yaml config")
runDirectory := opts.StringConfig("run-dir", "run",
"the path to the run directory to store locks, pid files, etc. [run]")
logDirectory := opts.StringConfig("log-dir", "log",
"the path to the log directory [log]")
logRotate := opts.StringConfig("log-rotate", "never",
"specify one of 'hourly', 'daily' or 'never' [never]")
noConsoleLog := opts.BoolConfig("no-console-log", false,
"disable server requests being logged to the console [false]")
extraConfig := opts.StringConfig("extra-config", "",
"path to a YAML config file with additional options")
// Parse the command line options.
args := opts.Parse(argv)
// Print the default YAML config file if the ``-g`` flag was specified.
if *genConfig {
opts.PrintDefaultConfigFile(name)
Exit(0)
}
// Assume the parent directory of the config as the instance directory.
if len(args) >= 1 {
configPath, err = filepath.Abs(filepath.Clean(args[0]))
if err != nil {
StandardError(err)
}
err = opts.ParseConfig(configPath, os.Args)
if err != nil {
StandardError(err)
}
instanceDirectory, _ = filepath.Split(configPath)
} else {
opts.PrintUsage()
Exit(0)
}
// Load the extra config file with additional options if one has been
// specified.
if *extraConfig != "" {
extraConfigPath, err := filepath.Abs(filepath.Clean(*extraConfig))
if err != nil {
StandardError(err)
}
extraConfigPath = JoinPath(instanceDirectory, extraConfigPath)
err = opts.ParseConfig(extraConfigPath, os.Args)
if err != nil {
StandardError(err)
}
}
// Create the log directory if it doesn't exist.
logPath := JoinPath(instanceDirectory, *logDirectory)
err = os.MkdirAll(logPath, 0755)
if err != nil {
StandardError(err)
}
// Create the run directory if it doesn't exist.
runPath := JoinPath(instanceDirectory, *runDirectory)
err = os.MkdirAll(runPath, 0755)
if err != nil {
StandardError(err)
}
// Setup the file and console logging.
var rotate int
switch *logRotate {
case "daily":
rotate = logging.RotateDaily
case "hourly":
rotate = logging.RotateHourly
case "never":
rotate = logging.RotateNever
default:
Error("ERROR: Unknown log rotation format %q\n", *logRotate)
}
if !*noConsoleLog {
logging.AddConsoleLogger()
logging.AddConsoleFilter(consoleFilter)
}
_, err = logging.AddFileLogger(name, logPath, rotate, logging.InfoLog)
if err != nil {
Error("ERROR: Couldn't initialise logfile: %s\n", err)
}
_, err = logging.AddFileLogger("error", logPath, rotate, logging.ErrorLog)
if err != nil {
Error("ERROR: Couldn't initialise logfile: %s\n", err)
}
// Initialise the runtime -- which will run the process on multiple
// processors if possible.
Init()
// Initialise the process-related resources.
InitProcess(name, runPath)
return *debug, instanceDirectory, runPath
}