// StartModule sets up the module with the given name.
func StartModule(name string, setup func(context *ModuleContext) error) {
logger := log.New(os.Stderr, name+" ", log.LstdFlags)
// Load configuration
flag.Parse()
if flag.NArg() != 1 {
logger.Fatal("Expecting configuration path.")
}
cfgPath := util.GetConfigPath(flag.Arg(0))
settings, err := util.LoadMonstiSettings(cfgPath)
if err != nil {
logger.Fatal("Could not load settings: ", err)
}
gettext.DefaultLocales.Domain = "monsti-" + name
gettext.DefaultLocales.LocaleDir = settings.Directories.Locale
renderer := mtemplate.Renderer{
Root: settings.GetTemplatesPath()}
monstiPath := settings.GetServicePath(service.MonstiService.String())
sessions := service.NewSessionPool(1, monstiPath)
session, err := sessions.New()
if err != nil {
logger.Fatalf("Could not get session: %v", err)
}
defer sessions.Free(session)
if err := setup(&ModuleContext{
settings, sessions, session, logger, &renderer,
}); err != nil {
logger.Fatalf("Could not setup module: %v", err)
}
if err := session.Monsti().ModuleInitDone("example-module"); err != nil {
logger.Fatalf("Could not finish initialization: %v", err)
}
for {
if err := session.Monsti().WaitSignal(); err != nil {
logger.Printf("Could not wait for signal: %v", err)
}
}
}
func main() {
useSyslog := flag.Bool("syslog", false, "use syslog")
flag.Parse()
var logger *log.Logger
if *useSyslog {
var err error
logger, err = syslog.NewLogger(syslog.LOG_INFO|syslog.LOG_DAEMON, 0)
if err != nil {
fmt.Fprintf(os.Stderr, "Could not setup syslog logger: %v\n", err)
os.Exit(1)
}
} else {
logger = log.New(os.Stderr, "monsti ", log.LstdFlags)
}
// Load configuration
if flag.NArg() != 1 {
logger.Fatalf("Usage: %v <config_directory>\n",
filepath.Base(os.Args[0]))
}
cfgPath := msettings.GetConfigPath(flag.Arg(0))
var settings settings
if err := msettings.LoadModuleSettings("daemon", cfgPath, &settings); err != nil {
logger.Fatal("Could not load settings: ", err)
}
gettext.DefaultLocales.Domain = "monsti-daemon"
gettext.DefaultLocales.LocaleDir = settings.Monsti.Directories.Locale
var waitGroup sync.WaitGroup
// Start service handler
monstiPath := settings.Monsti.GetServicePath(service.MonstiService.String())
monsti := new(MonstiService)
monsti.Settings = &settings
monsti.Logger = logger
provider := service.NewProvider("Monsti", monsti)
provider.Logger = logger
if err := provider.Listen(monstiPath); err != nil {
logger.Fatalf("service: Could not start service: %v", err)
}
waitGroup.Add(1)
go func() {
defer waitGroup.Done()
if err := provider.Accept(); err != nil {
logger.Fatalf("Could not accept at service: %v", err)
}
}()
sessions := service.NewSessionPool(1, monstiPath)
renderer := template.Renderer{Root: settings.Monsti.GetTemplatesPath()}
// Init core functionality
session, err := sessions.New()
if err != nil {
logger.Fatalf("Could not get session: %v", err)
}
if err := initNodeTypes(&settings, session, logger); err != nil {
logger.Fatalf("Could not init node types: %v", err)
}
if err := initBlog(&settings, session, sessions, logger,
&renderer); err != nil {
logger.Fatalf("Could not init blog: %v", err)
}
// Wait for signals
go func() {
for {
if err := session.Monsti().WaitSignal(); err != nil {
logger.Fatalf("Could not wait for signal: %v", err)
}
}
}()
// Start modules
monsti.moduleInit = make(map[string]chan bool)
for _, module := range settings.Modules {
monsti.moduleInit[module] = make(chan bool, 1)
}
for _, module := range settings.Modules {
executable := "monsti-" + module
cmd := exec.Command(executable, cfgPath)
cmd.Stderr = moduleLog{module, logger}
go func(module string) {
if err := cmd.Run(); err != nil {
logger.Fatalf("Module %q failed: %v", module, err)
}
}(module)
}
logger.Println("Waiting for modules to finish initialization...")
for _, module := range settings.Modules {
logger.Printf("Waiting for %q...", module)
<-monsti.moduleInit[module]
}
// Setup up httpd
handler := nodeHandler{
Renderer: renderer,
Settings: &settings,
Log: logger,
Sessions: sessions,
}
monsti.Handler = &handler
monsti.siteMutexes = make(map[string]*sync.RWMutex)
http.Handle("/static/", http.FileServer(http.Dir(
filepath.Dir(settings.Monsti.GetStaticsPath()))))
handler.InitializedSites = make(map[string]bool)
http.Handle("/", &handler)
waitGroup.Add(1)
go func() {
if err := http.ListenAndServe(settings.Listen, nil); err != nil {
logger.Fatal("HTTP Listener failed: ", err)
}
waitGroup.Done()
}()
logger.Printf("Monsti is up and running, listening on %q.", settings.Listen)
waitGroup.Wait()
logger.Println("Monsti is shutting down.")
}