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| 1 // Copyright 2013 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 "net/base/net_log_logger.h" | |
| 6 | |
| 7 #include <stdio.h> | |
| 8 | |
| 9 #include "base/json/json_writer.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/memory/scoped_ptr.h" | |
| 12 #include "base/values.h" | |
| 13 #include "net/base/net_log_util.h" | |
| 14 | |
| 15 namespace net { | |
| 16 | |
| 17 NetLogLogger::NetLogLogger(FILE* file, const base::Value& constants) | |
| 18 : file_(file), | |
| 19 log_level_(NetLog::LOG_STRIP_PRIVATE_DATA), | |
| 20 added_events_(false) { | |
| 21 DCHECK(file); | |
| 22 | |
| 23 // Write constants to the output file. This allows loading files that have | |
| 24 // different source and event types, as they may be added and removed | |
| 25 // between Chrome versions. | |
| 26 std::string json; | |
| 27 base::JSONWriter::Write(&constants, &json); | |
| 28 fprintf(file_.get(), "{\"constants\": %s,\n", json.c_str()); | |
| 29 fprintf(file_.get(), "\"events\": [\n"); | |
| 30 } | |
| 31 | |
| 32 NetLogLogger::~NetLogLogger() { | |
| 33 if (file_.get()) | |
| 34 fprintf(file_.get(), "]}"); | |
| 35 } | |
| 36 | |
| 37 void NetLogLogger::set_log_level(net::NetLog::LogLevel log_level) { | |
| 38 DCHECK(!net_log()); | |
| 39 log_level_ = log_level; | |
| 40 } | |
| 41 | |
| 42 void NetLogLogger::StartObserving(net::NetLog* net_log) { | |
| 43 net_log->AddThreadSafeObserver(this, log_level_); | |
| 44 } | |
| 45 | |
| 46 void NetLogLogger::StopObserving() { | |
| 47 net_log()->RemoveThreadSafeObserver(this); | |
| 48 } | |
| 49 | |
| 50 void NetLogLogger::OnAddEntry(const net::NetLog::Entry& entry) { | |
| 51 // Add a comma and newline for every event but the first. Newlines are needed | |
| 52 // so can load partial log files by just ignoring the last line. For this to | |
| 53 // work, lines cannot be pretty printed. | |
| 54 scoped_ptr<base::Value> value(entry.ToValue()); | |
| 55 std::string json; | |
| 56 base::JSONWriter::Write(value.get(), &json); | |
| 57 fprintf(file_.get(), "%s%s", | |
| 58 (added_events_ ? ",\n" : ""), | |
| 59 json.c_str()); | |
| 60 added_events_ = true; | |
| 61 } | |
| 62 | |
| 63 // static | |
| 64 base::DictionaryValue* NetLogLogger::GetConstants() { | |
| 65 return GetNetConstants().release(); | |
| 66 } | |
| 67 | |
| 68 } // namespace net | |
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