Configuration for download service.

components/download/internal/config.h

+// Copyright 2017 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_DOWNLOAD_INTERNAL_CONFIG_H_
+#define COMPONENTS_DOWNLOAD_INTERNAL_CONFIG_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "base/time/time.h"
+
+namespace download {
+
+// Configuration name for max concurrent downloads.
+constexpr char kMaxConcurrentDownloadsConfig[] = "max_concurrent_downloads";
+
+// Configuration name for maximum running downloads.
+constexpr char kMaxRunningDownloadsConfig[] = "max_running_downloads";
+
+// Configuration name for maximum scheduled downloads.
+constexpr char kMaxScheduledDownloadsConfig[] = "max_scheduled_downloads";
+
+// Configuration name for maximum retry count.
+constexpr char kMaxRetryCountConfig[] = "max_retry_count";
+
+// Configuration name for file keep alive time.
+constexpr char kFileKeepAliveTimeMinutesConfig[] = "file_keep_alive_time";
+
+// Download service configuration.
+//
+// Loaded based on experiment parameters from the server. Use default values if
+// no server configuration was detected.
+struct Configuration {
+ public:
+  // Create the configuration.
+  static std::unique_ptr<Configuration> Create();

[David Trainor- moved to gerrit, 2017/05/05 23:36:28]

CreateFromFinch?

[xingliu, 2017/05/06 00:55:01]

Done.

+
+  // The maximum number of downloads the DownloadService can have currently in
+  // Active or Paused states.
+  int max_concurrent_downloads;
+
+  // The maximum number of downloads the DownloadService can have currently in
+  // only Active state.
+  int max_running_downloads;
+
+  // The maximum number of downloads that are scheduled but not yet in Active
+  // state, for each client using the download service.
+  int max_scheduled_downloads;
+
+  // The maximum number of retries before the download is aborted.
+  int max_retry_count;
+
+  // The time that the download service will keep the files around before
+  // deleting them if the client hasn't handle the files.
+  base::TimeDelta file_keep_alive_time;
+
+ private:
+  Configuration();

[David Trainor- moved to gerrit, 2017/05/05 23:36:29]

Leave this public.

[xingliu, 2017/05/06 00:55:01]

Done.

+
+  DISALLOW_COPY_AND_ASSIGN(Configuration);
+};
+
+}  // namespace download
+
+#endif  // COMPONENTS_DOWNLOAD_INTERNAL_CONFIG_H_