1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/metrics/metrics_log_manager.h"
#include <algorithm>
#include "base/metrics/histogram.h"
#include "base/strings/string_util.h"
#include "chrome/common/metrics/metrics_log_base.h"
MetricsLogManager::MetricsLogManager()
: current_log_type_(NO_LOG),
paused_log_type_(NO_LOG),
staged_log_type_(NO_LOG),
max_ongoing_log_store_size_(0),
last_provisional_store_index_(-1),
last_provisional_store_type_(INITIAL_LOG) {}
MetricsLogManager::~MetricsLogManager() {}
void MetricsLogManager::BeginLoggingWithLog(MetricsLogBase* log,
LogType log_type) {
DCHECK(log_type != NO_LOG);
DCHECK(!current_log_.get());
current_log_.reset(log);
current_log_type_ = log_type;
}
void MetricsLogManager::FinishCurrentLog() {
DCHECK(current_log_.get());
DCHECK(current_log_type_ != NO_LOG);
current_log_->CloseLog();
std::string compressed_log;
CompressCurrentLog(&compressed_log);
if (!compressed_log.empty())
StoreLog(&compressed_log, current_log_type_, NORMAL_STORE);
current_log_.reset();
current_log_type_ = NO_LOG;
}
void MetricsLogManager::StageNextLogForUpload() {
// Prioritize initial logs for uploading.
std::vector<std::string>* source_list =
unsent_initial_logs_.empty() ? &unsent_ongoing_logs_
: &unsent_initial_logs_;
LogType source_type = (source_list == &unsent_ongoing_logs_) ? ONGOING_LOG
: INITIAL_LOG;
// CHECK, rather than DCHECK, because swap()ing with an empty list causes
// hard-to-identify crashes much later.
CHECK(!source_list->empty());
DCHECK(staged_log_text_.empty());
DCHECK(staged_log_type_ == NO_LOG);
staged_log_text_.swap(source_list->back());
staged_log_type_ = source_type;
source_list->pop_back();
// If the staged log was the last provisional store, clear that.
if (last_provisional_store_index_ != -1) {
if (source_type == last_provisional_store_type_ &&
static_cast<unsigned int>(last_provisional_store_index_) ==
source_list->size()) {
last_provisional_store_index_ = -1;
}
}
}
bool MetricsLogManager::has_staged_log() const {
return !staged_log_text().empty();
}
void MetricsLogManager::DiscardStagedLog() {
staged_log_text_.clear();
staged_log_type_ = NO_LOG;
}
void MetricsLogManager::DiscardCurrentLog() {
current_log_->CloseLog();
current_log_.reset();
current_log_type_ = NO_LOG;
}
void MetricsLogManager::PauseCurrentLog() {
DCHECK(!paused_log_.get());
DCHECK(paused_log_type_ == NO_LOG);
paused_log_.reset(current_log_.release());
paused_log_type_ = current_log_type_;
current_log_type_ = NO_LOG;
}
void MetricsLogManager::ResumePausedLog() {
DCHECK(!current_log_.get());
DCHECK(current_log_type_ == NO_LOG);
current_log_.reset(paused_log_.release());
current_log_type_ = paused_log_type_;
paused_log_type_ = NO_LOG;
}
void MetricsLogManager::StoreStagedLogAsUnsent(StoreType store_type) {
DCHECK(has_staged_log());
// If compressing the log failed, there's nothing to store.
if (staged_log_text_.empty())
return;
StoreLog(&staged_log_text_, staged_log_type_, store_type);
DiscardStagedLog();
}
void MetricsLogManager::StoreLog(std::string* log_text,
LogType log_type,
StoreType store_type) {
DCHECK(log_type != NO_LOG);
std::vector<std::string>* destination_list =
(log_type == INITIAL_LOG) ? &unsent_initial_logs_
: &unsent_ongoing_logs_;
destination_list->push_back(std::string());
destination_list->back().swap(*log_text);
if (store_type == PROVISIONAL_STORE) {
last_provisional_store_index_ = destination_list->size() - 1;
last_provisional_store_type_ = log_type;
}
}
void MetricsLogManager::DiscardLastProvisionalStore() {
if (last_provisional_store_index_ == -1)
return;
std::vector<std::string>* source_list =
(last_provisional_store_type_ == ONGOING_LOG) ? &unsent_ongoing_logs_
: &unsent_initial_logs_;
DCHECK_LT(static_cast<unsigned int>(last_provisional_store_index_),
source_list->size());
source_list->erase(source_list->begin() + last_provisional_store_index_);
last_provisional_store_index_ = -1;
}
void MetricsLogManager::PersistUnsentLogs() {
DCHECK(log_serializer_.get());
if (!log_serializer_.get())
return;
// Remove any ongoing logs that are over the serialization size limit.
if (max_ongoing_log_store_size_) {
for (std::vector<std::string>::iterator it = unsent_ongoing_logs_.begin();
it != unsent_ongoing_logs_.end();) {
size_t log_size = it->length();
if (log_size > max_ongoing_log_store_size_) {
UMA_HISTOGRAM_COUNTS("UMA.Large Accumulated Log Not Persisted",
static_cast<int>(log_size));
it = unsent_ongoing_logs_.erase(it);
} else {
++it;
}
}
}
log_serializer_->SerializeLogs(unsent_initial_logs_, INITIAL_LOG);
log_serializer_->SerializeLogs(unsent_ongoing_logs_, ONGOING_LOG);
}
void MetricsLogManager::LoadPersistedUnsentLogs() {
DCHECK(log_serializer_.get());
if (!log_serializer_.get())
return;
log_serializer_->DeserializeLogs(INITIAL_LOG, &unsent_initial_logs_);
log_serializer_->DeserializeLogs(ONGOING_LOG, &unsent_ongoing_logs_);
}
void MetricsLogManager::CompressCurrentLog(std::string* compressed_log) {
current_log_->GetEncodedLog(compressed_log);
}
|
