// gceDeployHandler conditionally returns an http.Handler for a GCE launcher,
// configured to run at /prefix/ (the trailing slash can be omitted).
// If CAMLI_GCE_CLIENTID is not set, the launcher-config.json file, if present,
// is used instead of environment variables to initialize the launcher. If a
// launcher isn't enabled, gceDeployHandler returns nil. If another error occurs,
// log.Fatal is called.
func gceDeployHandler(prefix string) http.Handler {
hostPort, err := netutil.HostPort("https://" + *httpsAddr)
if err != nil {
hostPort = "camlistore.org:443"
}
var gceh http.Handler
if e := os.Getenv("CAMLI_GCE_CLIENTID"); e != "" {
gceh, err = gce.NewDeployHandler(hostPort, prefix)
} else {
config := filepath.Join(*root, "launcher-config.json")
if _, err := os.Stat(config); err != nil {
if os.IsNotExist(err) {
return nil
}
log.Fatalf("Could not stat launcher-config.json: %v", err)
}
gceh, err = gce.NewDeployHandlerFromConfig(hostPort, prefix, config)
}
if err != nil {
log.Fatalf("Error initializing gce deploy handler: %v", err)
}
pageBytes, err := ioutil.ReadFile(filepath.Join(*root, "tmpl", "page.html"))
if err != nil {
log.Fatalf("Error initializing gce deploy handler: %v", err)
}
if err := gceh.(*gce.DeployHandler).AddTemplateTheme(string(pageBytes)); err != nil {
log.Fatalf("Error initializing gce deploy handler: %v", err)
}
log.Printf("Starting Camlistore launcher on https://%s%s", hostPort, prefix)
return gceh
}
// gceDeployHandler returns an http.Handler for a GCE launcher,
// configured to run at /prefix/ (the trailing slash can be omitted).
// The launcher is not initialized if:
// - in production, the launcher-config.json file is not found in the relevant bucket
// - neither CAMLI_GCE_CLIENTID is set, nor launcher-config.json is found in the
// camlistore server config dir.
func gceDeployHandler(ctx context.Context, prefix string) (*gce.DeployHandler, error) {
var hostPort string
var err error
scheme := "https"
if inProd {
hostPort = "camlistore.org:443"
} else {
addr := *httpsAddr
if *devMode && *httpsAddr == "" {
addr = *httpAddr
scheme = "http"
}
hostPort, err = netutil.ListenHostPort(addr)
if err != nil {
// the deploy handler needs to know its own
// hostname or IP for the oauth2 callback.
return nil, fmt.Errorf("invalid -https flag: %v", err)
}
}
config, err := gceDeployHandlerConfig(ctx)
if config == nil {
return nil, err
}
gceh, err := gce.NewDeployHandlerFromConfig(hostPort, prefix, config)
if err != nil {
return nil, fmt.Errorf("NewDeployHandlerFromConfig: %v", err)
}
pageBytes, err := ioutil.ReadFile(filepath.Join(*root, "tmpl", "page.html"))
if err != nil {
return nil, err
}
if err := gceh.AddTemplateTheme(string(pageBytes)); err != nil {
return nil, fmt.Errorf("AddTemplateTheme: %v", err)
}
gceh.SetScheme(scheme)
log.Printf("Starting Camlistore launcher on %s://%s%s", scheme, hostPort, prefix)
return gceh, nil
}