Dispatch push event to worker from PushServiceImpl#OnMessage.

chrome/browser/services/gcm/push_messaging_service_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/services/gcm/push_messaging_service_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
-#include "base/strings/string_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/services/gcm/gcm_profile_service.h"
 #include "chrome/browser/services/gcm/gcm_profile_service_factory.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "components/gcm_driver/gcm_driver.h"
 #include "components/pref_registry/pref_registry_syncable.h"
+#include "content/browser/service_worker/service_worker_context_wrapper.h"
+#include "content/browser/service_worker/service_worker_registration.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/push_messaging_application_id.h"
+#include "content/public/browser/storage_partition.h"
+
+using content::BrowserContext;
+using content::BrowserThread;
+using content::PushMessagingApplicationId;
+using content::ServiceWorkerContextWrapper;
 
 namespace gcm {
 
 namespace {
-const char kAppIdPrefix[] = "push:";
+// TODO(mvanouwerkerk): Move this to a public shared place.
+const char kAppIdPrefix[] = "push";
 const int kMaxRegistrations = 1000000;
 }  // namespace
 
 // static
 void PushMessagingServiceImpl::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterIntegerPref(
       prefs::kPushMessagingRegistrationCount,
       0,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
@@ skipping 33 matching lines @@
       profile_(profile),
       weak_factory_(this) {
 }
 
 PushMessagingServiceImpl::~PushMessagingServiceImpl() {
   // TODO(johnme): If it's possible for this to be destroyed before GCMDriver,
   // then we should call RemoveAppHandler.
 }
 
 bool PushMessagingServiceImpl::CanHandle(const std::string& app_id) const {
-  // TODO(mvanouwerkerk): Finalize and centralize format of Push API app_id.
-  return StartsWithASCII(app_id, kAppIdPrefix, true);
+  return PushMessagingApplicationId::IsValid(app_id);
 }
 
 void PushMessagingServiceImpl::ShutdownHandler() {
   // TODO(johnme): Do any necessary cleanup.
 }
 
 void PushMessagingServiceImpl::OnMessage(
     const std::string& app_id,
     const GCMClient::IncomingMessage& message) {
+  LOG(WARNING) << "app_id: " << app_id;
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   // The Push API only exposes a single string of data in the push event fired
   // on the Service Worker. When developers send messages using GCM to the Push
   // API, they must pass a single key-value pair, where the key is "data" and
   // the value is the string they want to be passed to their Service Worker.
   // For example, they could send the following JSON using the HTTPS GCM API:
   // {
   //     "registration_ids": ["FOO", "BAR"],
   //     "data": {
   //         "data": "BAZ",
   //     },
   //     "delay_while_idle": true,
   // }
   // TODO(johnme): Make sure this is clearly documented for developers.
+  PushMessagingApplicationId id = PushMessagingApplicationId::Parse(app_id);
+  DCHECK(id.is_valid());
   GCMClient::MessageData::const_iterator it = message.data.find("data");
-  if (it != message.data.end()) {
-    const std::string& data ALLOW_UNUSED = it->second;
-    // TODO(mvanouwerkerk): Fire push event with data on the Service Worker
-    // corresponding to app_id (and remove ALLOW_UNUSED above).
+  if (id.is_valid() && it != message.data.end()) {
+    const std::string& data = it->second;
+    content::StoragePartition* partition =
+        BrowserContext::GetStoragePartitionForSite(profile_, id.origin);
+    scoped_refptr<ServiceWorkerContextWrapper> worker_context =
+        static_cast<ServiceWorkerContextWrapper*>(
+            partition->GetServiceWorkerContext());
+    BrowserThread::PostTask(BrowserThread::IO,
+                            FROM_HERE,
+                            base::Bind(&PushMessagingServiceImpl::SendMessage,
+                                       weak_factory_.GetWeakPtr(),
+                                       id,
+                                       data,
+                                       worker_context));
   } else {
+    LOG(WARNING) << "Dropping the message.";
     // Drop the message, as it is invalid.
     // TODO(mvanouwerkerk): Show a warning in the developer console of the
     // Service Worker corresponding to app_id.
     // TODO(johnme): Add diagnostic observers (e.g. UMA and an internals page)
     // to know when bad things happen.
   }
 }
 
+void PushMessagingServiceImpl::SendMessage(
+    const PushMessagingApplicationId& id,
+    const std::string& data,
+    scoped_refptr<ServiceWorkerContextWrapper> worker_context) {
+  LOG(WARNING) << "data: " << data;
+  // TODO(mvanouwerkerk): Can this method live in content::PushMessagingService?
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  content::ServiceWorkerRegistration* worker_registration =
+      worker_context->context()->GetLiveRegistration(id.worker_registration_id);
+  if (worker_registration) {
+    base::Callback<void(ServiceWorkerStatusCode)> callback =
+        base::Bind(&PushMessagingServiceImpl::SendMessageCallback,
+                   weak_factory_.GetWeakPtr());
+    worker_registration->active_version()->DispatchPushEvent(callback, data);
+  } else {
+    // TODO(mvanouwerkerk): UMA logging. Can we recover from failure?
+    LOG(WARNING) << "Could not find ServiceWorkerRegistration.";
+  }
+}
+
+void PushMessagingServiceImpl::SendMessageCallback(
+    ServiceWorkerStatusCode status) {
+  // TODO(mvanouwerkerk): UMA logging. Can we recover from failures?
+  LOG(WARNING) << "ServiceWorkerStatusCode: " << status;
+}
+
 void PushMessagingServiceImpl::OnMessagesDeleted(const std::string& app_id) {
   // TODO(mvanouwerkerk): Fire push error event on the Service Worker
   // corresponding to app_id.
 }
 
 void PushMessagingServiceImpl::OnSendError(
     const std::string& app_id,
     const GCMClient::SendErrorDetails& send_error_details) {
   NOTREACHED() << "The Push API shouldn't have sent messages upstream";
 }
 
 void PushMessagingServiceImpl::Register(
     const std::string& app_id,
     const std::string& sender_id,
     const content::PushMessagingService::RegisterCallback& callback) {
+  LOG(WARNING) << "app_id: " << app_id;
   if (!gcm_profile_service_->driver()) {
     NOTREACHED() << "There is no GCMDriver. Has GCMProfileService shut down?";
   }
 
   if (profile_->GetPrefs()->GetInteger(
           prefs::kPushMessagingRegistrationCount) >= kMaxRegistrations) {
+    LOG(WARNING) << "Registration limit has been reached.";
     DidRegister(app_id, callback, "", GCMClient::UNKNOWN_ERROR);
     return;
   }
 
   // If this is registering for the first time then the driver does not have
   // this as an app handler and registration would fail.
   if (gcm_profile_service_->driver()->GetAppHandler(kAppIdPrefix) != this)
     gcm_profile_service_->driver()->AddAppHandler(kAppIdPrefix, this);
 
   std::vector<std::string> sender_ids(1, sender_id);
   gcm_profile_service_->driver()->Register(
       app_id,
       sender_ids,
       base::Bind(&PushMessagingServiceImpl::DidRegister,
                  weak_factory_.GetWeakPtr(),
                  app_id,
                  callback));
 }
 
 void PushMessagingServiceImpl::DidRegister(
     const std::string& app_id,
     const content::PushMessagingService::RegisterCallback& callback,
     const std::string& registration_id,
     GCMClient::Result result) {
+  LOG(WARNING) << "result: " << result;
   GURL endpoint = GURL("https://android.googleapis.com/gcm/send");
   bool success = (result == GCMClient::SUCCESS);
   callback.Run(endpoint, registration_id, success);
   if (success) {
     // TODO(johnme): Make sure the pref doesn't get out of sync after crashes.
     int registration_count = profile_->GetPrefs()->GetInteger(
         prefs::kPushMessagingRegistrationCount);
     profile_->GetPrefs()->SetInteger(prefs::kPushMessagingRegistrationCount,
                                      registration_count + 1);
   }
 }
 
 // TODO(johnme): Unregister should decrement the pref, and call
 // RemoveAppHandler if the count drops to zero.
 
 }  // namespace gcm