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1 // Copyright (c) 2012 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 #include "sync/engine/traffic_recorder.h" | |
6 | |
7 #include "base/json/json_writer.h" | |
8 #include "base/logging.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/values.h" | |
11 #include "sync/protocol/proto_value_conversions.h" | |
12 #include "sync/protocol/sync.pb.h" | |
13 #include "sync/sessions/sync_session.h" | |
14 #include "sync/util/time.h" | |
15 | |
16 namespace syncer { | |
17 | |
18 // Return current time. | |
19 base::Time TrafficRecorder::GetTime() { | |
20 return base::Time::Now(); | |
21 } | |
22 | |
23 TrafficRecorder::TrafficRecord::TrafficRecord(const std::string& message, | |
24 TrafficMessageType message_type, | |
25 bool truncated, | |
26 base::Time time) : | |
27 message(message), | |
28 message_type(message_type), | |
29 truncated(truncated), | |
30 timestamp(time) { | |
31 } | |
32 | |
33 TrafficRecorder::TrafficRecord::TrafficRecord() | |
34 : message_type(UNKNOWN_MESSAGE_TYPE), | |
35 truncated(false) { | |
36 } | |
37 | |
38 TrafficRecorder::TrafficRecord::~TrafficRecord() { | |
39 } | |
40 | |
41 TrafficRecorder::TrafficRecorder(unsigned int max_messages, | |
42 unsigned int max_message_size) | |
43 : max_messages_(max_messages), | |
44 max_message_size_(max_message_size) { | |
45 } | |
46 | |
47 TrafficRecorder::~TrafficRecorder() { | |
48 } | |
49 | |
50 namespace { | |
51 const char* GetMessageTypeString(TrafficRecorder::TrafficMessageType type) { | |
52 switch(type) { | |
53 case TrafficRecorder::CLIENT_TO_SERVER_MESSAGE: | |
54 return "Request"; | |
55 case TrafficRecorder::CLIENT_TO_SERVER_RESPONSE: | |
56 return "Response"; | |
57 default: | |
58 NOTREACHED(); | |
59 return ""; | |
60 } | |
61 } | |
62 } | |
63 | |
64 base::DictionaryValue* TrafficRecorder::TrafficRecord::ToValue() const { | |
65 scoped_ptr<base::DictionaryValue> value; | |
66 if (truncated) { | |
67 value.reset(new base::DictionaryValue()); | |
68 value->SetString("message_type", | |
69 GetMessageTypeString(message_type)); | |
70 value->SetBoolean("truncated", true); | |
71 } else if (message_type == TrafficRecorder::CLIENT_TO_SERVER_MESSAGE) { | |
72 sync_pb::ClientToServerMessage message_proto; | |
73 if (message_proto.ParseFromString(message)) | |
74 value.reset( | |
75 ClientToServerMessageToValue(message_proto, | |
76 false /* include_specifics */)); | |
77 } else if (message_type == TrafficRecorder::CLIENT_TO_SERVER_RESPONSE) { | |
78 sync_pb::ClientToServerResponse message_proto; | |
79 if (message_proto.ParseFromString(message)) | |
80 value.reset( | |
81 ClientToServerResponseToValue(message_proto, | |
82 false /* include_specifics */)); | |
83 } else { | |
84 NOTREACHED(); | |
85 } | |
86 | |
87 value->SetString("timestamp", GetTimeDebugString(timestamp)); | |
88 | |
89 return value.release(); | |
90 } | |
91 | |
92 | |
93 base::ListValue* TrafficRecorder::ToValue() const { | |
94 scoped_ptr<base::ListValue> value(new base::ListValue()); | |
95 std::deque<TrafficRecord>::const_iterator it; | |
96 for (it = records_.begin(); it != records_.end(); ++it) { | |
97 const TrafficRecord& record = *it; | |
98 value->Append(record.ToValue()); | |
99 } | |
100 | |
101 return value.release(); | |
102 } | |
103 | |
104 | |
105 void TrafficRecorder::AddTrafficToQueue(TrafficRecord* record) { | |
106 records_.resize(records_.size() + 1); | |
107 std::swap(records_.back(), *record); | |
108 | |
109 // We might have more records than our limit. | |
110 // Maintain the size invariant by deleting items. | |
111 while (records_.size() > max_messages_) { | |
112 records_.pop_front(); | |
113 } | |
114 } | |
115 | |
116 void TrafficRecorder::StoreProtoInQueue( | |
117 const ::google::protobuf::MessageLite& msg, | |
118 TrafficMessageType type) { | |
119 bool truncated = false; | |
120 std::string message; | |
121 if (static_cast<unsigned int>(msg.ByteSize()) >= max_message_size_) { | |
122 // TODO(lipalani): Trim the specifics to fit in size. | |
123 truncated = true; | |
124 } else { | |
125 msg.SerializeToString(&message); | |
126 } | |
127 | |
128 TrafficRecord record(message, type, truncated, GetTime()); | |
129 AddTrafficToQueue(&record); | |
130 } | |
131 | |
132 void TrafficRecorder::RecordClientToServerMessage( | |
133 const sync_pb::ClientToServerMessage& msg) { | |
134 StoreProtoInQueue(msg, CLIENT_TO_SERVER_MESSAGE); | |
135 } | |
136 | |
137 void TrafficRecorder::RecordClientToServerResponse( | |
138 const sync_pb::ClientToServerResponse& response) { | |
139 StoreProtoInQueue(response, CLIENT_TO_SERVER_RESPONSE); | |
140 } | |
141 | |
142 } // namespace syncer | |
143 | |
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