1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
6 #define COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
10 #include "base/basictypes.h"
11 #include "base/callback_forward.h"
12 #include "base/memory/scoped_ptr.h"
13 #include "base/strings/string16.h"
14 #include "components/metrics/proto/system_profile.pb.h"
18 class MetricsLogUploader;
20 // An abstraction of operations that depend on the embedder's (e.g. Chrome)
22 class MetricsServiceClient {
24 virtual ~MetricsServiceClient() {}
26 // Registers the client id with other services (e.g. crash reporting), called
27 // when metrics recording gets enabled.
28 virtual void SetMetricsClientId(const std::string& client_id) = 0;
30 // Whether there's an "off the record" (aka "Incognito") session active.
31 virtual bool IsOffTheRecordSessionActive() = 0;
33 // Returns the current application locale (e.g. "en-US").
34 virtual std::string GetApplicationLocale() = 0;
36 // Retrieves the brand code string associated with the install, returning
37 // false if no brand code is available.
38 virtual bool GetBrand(std::string* brand_code) = 0;
40 // Returns the release channel (e.g. stable, beta, etc) of the application.
41 virtual SystemProfileProto::Channel GetChannel() = 0;
43 // Returns the version of the application as a string.
44 virtual std::string GetVersionString() = 0;
46 // Called by the metrics service when a log has been uploaded.
47 virtual void OnLogUploadComplete() = 0;
49 // Starts gathering metrics, calling |done_callback| when initial metrics
50 // gathering is complete.
51 virtual void StartGatheringMetrics(const base::Closure& done_callback) = 0;
53 // Called prior to a metrics log being closed, allowing the client to collect
54 // extra histograms that will go in that log. Asynchronous API - the client
55 // implementation should call |done_callback| when complete.
56 virtual void CollectFinalMetrics(const base::Closure& done_callback) = 0;
58 // Creates a MetricsLogUploader with the specified parameters (see comments on
59 // MetricsLogUploader for details).
60 virtual scoped_ptr<MetricsLogUploader> CreateUploader(
61 const std::string& server_url,
62 const std::string& mime_type,
63 const base::Callback<void(int)>& on_upload_complete) = 0;
65 // Returns the name of a key under HKEY_CURRENT_USER that can be used to store
66 // backups of metrics data. Unused except on Windows.
67 virtual base::string16 GetRegistryBackupKey();
70 } // namespace metrics
72 #endif // COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_