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| 1 // Copyright 2017 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. | |
| 4 | |
| 5 #ifndef COMPONENTS_UKM_UKM_ENTRY_H_ | |
| 6 #define COMPONENTS_UKM_UKM_ENTRY_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/macros.h" | |
| 12 | |
| 13 namespace ukm { | |
| 14 | |
| 15 class Entry; | |
| 16 class UkmEntryBuilder; | |
| 17 | |
| 18 // One UkmEntry contains metrics for a specific source and event. It is | |
| 19 // connected to a UkmSource by the source ID. The event can be user defined. | |
| 20 // One example is "PageLoad". Each UkmEntry can have a list of metrics, each of | |
| 21 // which consist of a metric name and value. When the entry is serialized to the | |
| 22 // proto message, the event and metric names will be hashed by | |
| 23 // base::HashMetricName. | |
| 24 // | |
| 25 // To build UkmEntry objects, please use UkmEntryBuilder. | |
| 26 class UkmEntry { | |
| 27 public: | |
| 28 // Serializes the members of the class into the supplied proto. | |
| 29 void PopulateProto(Entry* proto_entry) const; | |
| 30 | |
| 31 int32_t source_id() const { return source_id_; } | |
| 32 uint64_t event_hash() const { return event_hash_; } | |
| 33 | |
| 34 ~UkmEntry(); | |
| 35 | |
| 36 private: | |
| 37 friend UkmEntryBuilder; | |
| 38 | |
| 39 UkmEntry(int32_t source_id, const char* event_name); | |
| 40 | |
| 41 const int32_t source_id_; | |
| 42 const uint64_t event_hash_; | |
| 43 std::vector<std::pair<uint64_t, int64_t>> metrics_; | |
| 44 | |
| 45 DISALLOW_COPY_AND_ASSIGN(UkmEntry); | |
| 46 }; | |
| 47 | |
| 48 } // namespace ukm | |
| 49 | |
| 50 #endif // COMPONENTS_UKM_UKM_ENTRY_H_ | |
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Chromium Code Reviews
Issue 2893943004:
Refactor UKM interface for mojo-ification (Closed)
