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Unified Diff: components/copresence/handlers/gcm_handler.h

Issue 712833002: Undoing revert, cl is not the cause of gcm crash on canary. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@2214
Patch Set: Created 6 years, 1 month ago
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Index: components/copresence/handlers/gcm_handler.h
diff --git a/components/copresence/handlers/gcm_handler.h b/components/copresence/handlers/gcm_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..f69d8a48090e181a46ce330763ee07f0ef862387
--- /dev/null
+++ b/components/copresence/handlers/gcm_handler.h
@@ -0,0 +1,78 @@
+// 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.
+
+#ifndef COMPONENTS_COPRESENCE_HANDLERS_GCM_HANDLER_H_
+#define COMPONENTS_COPRESENCE_HANDLERS_GCM_HANDLER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/callback.h"
+#include "base/memory/weak_ptr.h"
+#include "components/gcm_driver/gcm_app_handler.h"
+#include "components/gcm_driver/gcm_client.h"
+
+namespace gcm {
+class GCMDriver;
+}
+
+namespace copresence {
+
+class DirectiveHandler;
+
+// This class handles GCM messages from the Copresence server.
+class GCMHandler final : public gcm::GCMAppHandler,
+ public base::SupportsWeakPtr<GCMHandler> {
+ public:
+ // Callback to report that registration has completed.
+ // Returns an empty ID if registration failed.
+ using RegistrationCallback = base::Callback<void(const std::string&)>;
+
+ static const char kCopresenceAppId[];
+ static const char kCopresenceSenderId[];
+ static const char kGcmMessageKey[];
+
+ // |gcm_driver| is required, but may disappear if we get a ShutdownHandler()
+ // call first. |directive_handler| must outlive us. The caller owns both.
+ GCMHandler(gcm::GCMDriver* gcm_driver,
+ DirectiveHandler* directive_handler);
+ ~GCMHandler() override;
+
+ // Request the GCM ID. It may be returned now or later, via the callback.
+ void GetGcmId(const RegistrationCallback& callback);
+
+ // GCMAppHandler overrides
+ void ShutdownHandler() override;
+ void OnMessage(const std::string& app_id,
+ const gcm::GCMClient::IncomingMessage& message) override;
+ void OnMessagesDeleted(const std::string& app_id) override;
+ void OnSendError(
+ const std::string& /* app_id */,
+ const gcm::GCMClient::SendErrorDetails& /* send_error_details */)
+ override;
+ void OnSendAcknowledged(const std::string& /* app_id */,
+ const std::string& /* message_id */) override;
+ bool CanHandle(const std::string& app_id) const override;
+
+ private:
+ // GCM Registration has finished. Notify clients as appropriate.
+ void RegistrationComplete(const std::string& registration_id,
+ gcm::GCMClient::Result result);
+
+ gcm::GCMDriver* driver_;
+ DirectiveHandler* const directive_handler_;
+
+ // TODO(ckehoe): Change this to a CancelableCallback.
+ base::Callback<void(const std::string&,
+ gcm::GCMClient::Result)> registration_callback_;
+
+ std::string gcm_id_;
+ std::vector<RegistrationCallback> pending_id_requests_;
+
+ DISALLOW_COPY_AND_ASSIGN(GCMHandler);
+};
+
+} // namespace copresence
+
+#endif // COMPONENTS_COPRESENCE_HANDLERS_GCM_HANDLER_H_
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