func (hl *handlerLoader) setupHandler(prefix string) {
h, ok := hl.config[prefix]
if !ok {
exitFailure("invalid reference to undefined handler %q", prefix)
}
if h.setupDone {
// Already setup by something else reference it and forcing it to be
// setup before the bottom loop got to it.
return
}
hl.prefixStack = append(hl.prefixStack, prefix)
if h.settingUp {
buf := make([]byte, 1024)
buf = buf[:runtime.Stack(buf, false)]
exitFailure("loop in configuration graph; %q tried to load itself indirectly: %q\nStack:\n%s",
prefix, hl.prefixStack, buf)
}
h.settingUp = true
defer func() {
// log.Printf("Configured handler %q", prefix)
h.setupDone = true
hl.prefixStack = hl.prefixStack[:len(hl.prefixStack)-1]
r := recover()
if r == nil {
if hl.handler[prefix] == nil {
panic(fmt.Sprintf("setupHandler for %q didn't install a handler", prefix))
}
} else {
panic(r)
}
}()
hl.curPrefix = prefix
if strings.HasPrefix(h.htype, "storage-") {
stype := strings.TrimPrefix(h.htype, "storage-")
// Assume a storage interface
pstorage, err := blobserver.CreateStorage(stype, hl, h.conf)
if err != nil {
exitFailure("error instantiating storage for prefix %q, type %q: %v",
h.prefix, stype, err)
}
if ix, ok := pstorage.(*index.Index); ok && hl.reindex {
log.Printf("Reindexing %s ...", h.prefix)
if err := ix.Reindex(); err != nil {
exitFailure("Error reindexing %s: %v", h.prefix, err)
}
}
hl.handler[h.prefix] = pstorage
if h.internal {
hl.installer.Handle(prefix, unauthorizedHandler{})
} else {
hl.installer.Handle(prefix+"camli/", makeCamliHandler(prefix, hl.baseURL, pstorage, hl))
}
if cl, ok := pstorage.(blobserver.ShutdownStorage); ok {
hl.closers = append(hl.closers, cl)
}
return
}
var hh http.Handler
if h.htype == "app" {
ap, err := app.NewHandler(h.conf, hl.baseURL+"/", prefix)
if err != nil {
exitFailure("error setting up app for prefix %q: %v", h.prefix, err)
}
hh = ap
auth.AddMode(ap.AuthMode())
if ap.ProgramName() == "publisher" {
if err := hl.initPublisherRootNode(ap); err != nil {
exitFailure("Error looking/setting up root node for publisher on %v: %v", h.prefix, err)
}
}
} else {
var err error
hh, err = blobserver.CreateHandler(h.htype, hl, h.conf)
if err != nil {
exitFailure("error instantiating handler for prefix %q, type %q: %v",
h.prefix, h.htype, err)
}
}
hl.handler[prefix] = hh
var wrappedHandler http.Handler
if h.internal {
wrappedHandler = unauthorizedHandler{}
} else {
wrappedHandler = &httputil.PrefixHandler{prefix, hh}
if handlerTypeWantsAuth(h.htype) {
wrappedHandler = auth.Handler{wrappedHandler}
}
}
hl.installer.Handle(prefix, wrappedHandler)
}
func (hl *handlerLoader) setupHandler(prefix string) {
h, ok := hl.config[prefix]
if !ok {
exitFailure("invalid reference to undefined handler %q", prefix)
}
if h.setupDone {
// Already setup by something else reference it and forcing it to be
// setup before the bottom loop got to it.
return
}
hl.prefixStack = append(hl.prefixStack, prefix)
if h.settingUp {
buf := make([]byte, 1024)
buf = buf[:runtime.Stack(buf, false)]
exitFailure("loop in configuration graph; %q tried to load itself indirectly: %q\nStack:\n%s",
prefix, hl.prefixStack, buf)
}
h.settingUp = true
defer func() {
// log.Printf("Configured handler %q", prefix)
h.setupDone = true
hl.prefixStack = hl.prefixStack[:len(hl.prefixStack)-1]
r := recover()
if r == nil {
if hl.handler[prefix] == nil {
panic(fmt.Sprintf("setupHandler for %q didn't install a handler", prefix))
}
} else {
panic(r)
}
}()
hl.curPrefix = prefix
if strings.HasPrefix(h.htype, "storage-") {
stype := strings.TrimPrefix(h.htype, "storage-")
// Assume a storage interface
pstorage, err := blobserver.CreateStorage(stype, hl, h.conf)
if err != nil {
exitFailure("error instantiating storage for prefix %q, type %q: %v",
h.prefix, stype, err)
}
if ix, ok := pstorage.(*index.Index); ok && hl.reindex {
log.Printf("Reindexing %s ...", h.prefix)
if err := ix.Reindex(); err != nil {
exitFailure("Error reindexing %s: %v", h.prefix, err)
}
}
hl.handler[h.prefix] = pstorage
if h.internal {
hl.installer.Handle(prefix, unauthorizedHandler{})
} else {
hl.installer.Handle(prefix+"camli/", makeCamliHandler(prefix, hl.baseURL, pstorage, hl))
}
if cl, ok := pstorage.(blobserver.ShutdownStorage); ok {
hl.closers = append(hl.closers, cl)
}
return
}
var hh http.Handler
if h.htype == "app" {
// h.conf might already contain the server's baseURL, but
// camlistored.go derives (if needed) a more useful hl.baseURL,
// after h.conf was generated, so we provide it as well to
// FromJSONConfig so NewHandler can benefit from it.
hc, err := app.FromJSONConfig(h.conf, hl.baseURL)
if err != nil {
exitFailure("error setting up app config for prefix %q: %v", h.prefix, err)
}
ap, err := app.NewHandler(hc)
if err != nil {
exitFailure("error setting up app for prefix %q: %v", h.prefix, err)
}
hh = ap
auth.AddMode(ap.AuthMode())
// TODO(mpl): this check is weak, as the user could very well
// use another binary name for the publisher app. We should
// introduce/use another identifier.
if ap.ProgramName() == "publisher" {
if err := hl.initPublisherRootNode(ap); err != nil {
exitFailure("Error looking/setting up root node for publisher on %v: %v", h.prefix, err)
}
}
} else {
var err error
hh, err = blobserver.CreateHandler(h.htype, hl, h.conf)
if err != nil {
exitFailure("error instantiating handler for prefix %q, type %q: %v",
h.prefix, h.htype, err)
}
}
hl.handler[prefix] = hh
var wrappedHandler http.Handler
if h.internal {
wrappedHandler = unauthorizedHandler{}
} else {
wrappedHandler = &httputil.PrefixHandler{Prefix: prefix, Handler: hh}
if handlerTypeWantsAuth(h.htype) {
wrappedHandler = auth.Handler{Handler: wrappedHandler}
}
}
hl.installer.Handle(prefix, wrappedHandler)
}