1/*
2 * Copyright (C) 2017 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#define DEBUG false  // STOPSHIP if true
18#include "Log.h"
19
20#include "EventMetricProducer.h"
21#include "stats_util.h"
22#include "stats_log_util.h"
23
24#include <limits.h>
25#include <stdlib.h>
26
27using android::util::FIELD_COUNT_REPEATED;
28using android::util::FIELD_TYPE_BOOL;
29using android::util::FIELD_TYPE_FLOAT;
30using android::util::FIELD_TYPE_INT32;
31using android::util::FIELD_TYPE_INT64;
32using android::util::FIELD_TYPE_STRING;
33using android::util::FIELD_TYPE_MESSAGE;
34using android::util::ProtoOutputStream;
35using std::map;
36using std::string;
37using std::unordered_map;
38using std::vector;
39
40namespace android {
41namespace os {
42namespace statsd {
43
44// for StatsLogReport
45const int FIELD_ID_ID = 1;
46const int FIELD_ID_EVENT_METRICS = 4;
47// for EventMetricDataWrapper
48const int FIELD_ID_DATA = 1;
49// for EventMetricData
50const int FIELD_ID_ELAPSED_TIMESTAMP_NANOS = 1;
51const int FIELD_ID_ATOMS = 2;
52const int FIELD_ID_WALL_CLOCK_TIMESTAMP_NANOS = 3;
53
54EventMetricProducer::EventMetricProducer(const ConfigKey& key, const EventMetric& metric,
55                                         const int conditionIndex,
56                                         const sp<ConditionWizard>& wizard,
57                                         const int64_t startTimeNs)
58    : MetricProducer(metric.id(), key, startTimeNs, conditionIndex, wizard) {
59    if (metric.links().size() > 0) {
60        for (const auto& link : metric.links()) {
61            Metric2Condition mc;
62            mc.conditionId = link.condition();
63            translateFieldMatcher(link.fields_in_what(), &mc.metricFields);
64            translateFieldMatcher(link.fields_in_condition(), &mc.conditionFields);
65            mMetric2ConditionLinks.push_back(mc);
66        }
67        mConditionSliced = true;
68    }
69    mProto = std::make_unique<ProtoOutputStream>();
70    VLOG("metric %lld created. bucket size %lld start_time: %lld", (long long)metric.id(),
71         (long long)mBucketSizeNs, (long long)mTimeBaseNs);
72}
73
74EventMetricProducer::~EventMetricProducer() {
75    VLOG("~EventMetricProducer() called");
76}
77
78void EventMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
79    mProto->clear();
80}
81
82void EventMetricProducer::onSlicedConditionMayChangeLocked(bool overallCondition,
83                                                           const int64_t eventTime) {
84}
85
86std::unique_ptr<std::vector<uint8_t>> serializeProtoLocked(ProtoOutputStream& protoOutput) {
87    size_t bufferSize = protoOutput.size();
88
89    std::unique_ptr<std::vector<uint8_t>> buffer(new std::vector<uint8_t>(bufferSize));
90
91    size_t pos = 0;
92    auto it = protoOutput.data();
93    while (it.readBuffer() != NULL) {
94        size_t toRead = it.currentToRead();
95        std::memcpy(&((*buffer)[pos]), it.readBuffer(), toRead);
96        pos += toRead;
97        it.rp()->move(toRead);
98    }
99
100    return buffer;
101}
102
103void EventMetricProducer::clearPastBucketsLocked(const int64_t dumpTimeNs) {
104    mProto->clear();
105}
106
107void EventMetricProducer::onDumpReportLocked(const int64_t dumpTimeNs,
108                                             const bool include_current_partial_bucket,
109                                             std::set<string> *str_set,
110                                             ProtoOutputStream* protoOutput) {
111    if (mProto->size() <= 0) {
112        return;
113    }
114    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_ID, (long long)mMetricId);
115
116    size_t bufferSize = mProto->size();
117    VLOG("metric %lld dump report now... proto size: %zu ",
118        (long long)mMetricId, bufferSize);
119    std::unique_ptr<std::vector<uint8_t>> buffer = serializeProtoLocked(*mProto);
120
121    protoOutput->write(FIELD_TYPE_MESSAGE | FIELD_ID_EVENT_METRICS,
122                       reinterpret_cast<char*>(buffer.get()->data()), buffer.get()->size());
123
124    mProto->clear();
125}
126
127void EventMetricProducer::onConditionChangedLocked(const bool conditionMet,
128                                                   const int64_t eventTime) {
129    VLOG("Metric %lld onConditionChanged", (long long)mMetricId);
130    mCondition = conditionMet;
131}
132
133void EventMetricProducer::onMatchedLogEventInternalLocked(
134        const size_t matcherIndex, const MetricDimensionKey& eventKey,
135        const ConditionKey& conditionKey, bool condition,
136        const LogEvent& event) {
137    if (!condition) {
138        return;
139    }
140
141    uint64_t wrapperToken =
142            mProto->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_DATA);
143    const bool truncateTimestamp =
144            android::util::AtomsInfo::kNotTruncatingTimestampAtomWhiteList.find(event.GetTagId()) ==
145            android::util::AtomsInfo::kNotTruncatingTimestampAtomWhiteList.end();
146    if (truncateTimestamp) {
147        mProto->write(FIELD_TYPE_INT64 | FIELD_ID_ELAPSED_TIMESTAMP_NANOS,
148            (long long)truncateTimestampNsToFiveMinutes(event.GetElapsedTimestampNs()));
149        mProto->write(FIELD_TYPE_INT64 | FIELD_ID_WALL_CLOCK_TIMESTAMP_NANOS,
150            (long long)truncateTimestampNsToFiveMinutes(getWallClockNs()));
151    } else {
152        mProto->write(FIELD_TYPE_INT64 | FIELD_ID_ELAPSED_TIMESTAMP_NANOS,
153            (long long)event.GetElapsedTimestampNs());
154        mProto->write(FIELD_TYPE_INT64 | FIELD_ID_WALL_CLOCK_TIMESTAMP_NANOS,
155            (long long)getWallClockNs());
156    }
157
158    uint64_t eventToken = mProto->start(FIELD_TYPE_MESSAGE | FIELD_ID_ATOMS);
159    event.ToProto(*mProto);
160    mProto->end(eventToken);
161    mProto->end(wrapperToken);
162}
163
164size_t EventMetricProducer::byteSizeLocked() const {
165    return mProto->bytesWritten();
166}
167
168}  // namespace statsd
169}  // namespace os
170}  // namespace android
171