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Unified Diff: components/rappor/log_uploader.h

Issue 49753002: RAPPOR implementation (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 7 years ago
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Index: components/rappor/log_uploader.h
diff --git a/components/rappor/log_uploader.h b/components/rappor/log_uploader.h
new file mode 100644
index 0000000000000000000000000000000000000000..ba182019976e1d6f9bb176eabed689742f495c3d
--- /dev/null
+++ b/components/rappor/log_uploader.h
@@ -0,0 +1,74 @@
+// Copyright (c) 2013 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_RAPPOR_LOG_UPLOADER_H_
+#define COMPONENTS_RAPPOR_LOG_UPLOADER_H_
+
+#include <queue>
+#include <string>
+
+#include "base/memory/weak_ptr.h"
+#include "base/time/time.h"
+#include "base/timer/timer.h"
+#include "net/url_request/url_fetcher.h"
+#include "net/url_request/url_fetcher_delegate.h"
+#include "net/url_request/url_request_context_getter.h"
+
+namespace rappor {
+
+// Handles uploading logs to an external server.
+class LogUploader : public net::URLFetcherDelegate {
+ public:
+ LogUploader(const char* server_url, const char* mime_type);
+
+ void SetRequestContext(net::URLRequestContextGetter* request_context);
+
+ void QueueLog(const std::string& logData);
+
+ private:
+ // The server URL to upload logs to.
+ const char* server_url_;
+
+ // The mime type to specify on uploaded logs.
+ const char* mime_type_;
+
+ net::URLRequestContextGetter* request_context_;
+
+ // The outstanding transmission appears as a URL Fetch operation.
+ scoped_ptr<net::URLFetcher> current_fetch_;
+
+ // The logs that still need to be uploaded.
+ std::queue<std::string> queued_logs_;
+
+ base::OneShotTimer<LogUploader> upload_timer_;
+
+ // Indicates that the last triggered upload hasn't resolved yet.
+ bool callback_pending_;
+
+ // The interval between being told an upload is done and starting the next
+ // upload.
+ base::TimeDelta upload_interval_;
+
+ // Starts transmission of the next log.
+ void StartScheduledUpload();
+
+ // Schedules a future call to StartScheduledUpload if one isn't already
+ // pending.
+ void ScheduleNextUpload();
+
+ // Increases the upload interval each time it's called, to handle the case
+ // where the server is having issues.
+ void BackOffUploadInterval();
+
+ // Implementation of net::URLFetcherDelegate. Called after transmission
+ // completes (either successfully or with failure).
+ virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
+
+ // Called when the upload is completed.
+ void UploadFinished(bool server_is_healthy, bool more_logs_remaining);
+};
+
+} // namespace rappor
+
+#endif // COMPONENTS_RAPPOR_LOG_UPLOADER_H_

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