1 /*
2  * Copyright (C) 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef SRC_TRACE_PROCESSOR_IMPORTERS_JSON_JSON_TRACKER_H_
18 #define SRC_TRACE_PROCESSOR_IMPORTERS_JSON_JSON_TRACKER_H_
19 
20 #include "src/trace_processor/importers/json/json_utils.h"
21 #include "src/trace_processor/types/destructible.h"
22 #include "src/trace_processor/types/trace_processor_context.h"
23 
24 namespace Json {
25 class Value;
26 }
27 
28 namespace perfetto {
29 namespace trace_processor {
30 
31 class JsonTracker : public Destructible {
32  public:
33   JsonTracker(const JsonTracker&) = delete;
34   JsonTracker& operator=(const JsonTracker&) = delete;
35   explicit JsonTracker(TraceProcessorContext*);
36   ~JsonTracker() override;
37 
GetOrCreate(TraceProcessorContext * context)38   static JsonTracker* GetOrCreate(TraceProcessorContext* context) {
39     if (!context->json_tracker) {
40       context->json_tracker.reset(new JsonTracker(context));
41     }
42     return static_cast<JsonTracker*>(context->json_tracker.get());
43   }
44 
SetTimeUnit(json::TimeUnit time_unit)45   void SetTimeUnit(json::TimeUnit time_unit) { time_unit_ = time_unit; }
46 
CoerceToTs(const Json::Value & value)47   base::Optional<int64_t> CoerceToTs(const Json::Value& value) {
48     return json::CoerceToTs(time_unit_, value);
49   }
50 
51  private:
52   json::TimeUnit time_unit_ = json::TimeUnit::kUs;
53 };
54 
55 }  // namespace trace_processor
56 }  // namespace perfetto
57 
58 #endif  // SRC_TRACE_PROCESSOR_IMPORTERS_JSON_JSON_TRACKER_H_
59