GaugeMetricProducer.cpp revision 3b592910c50856a3b28a07a735c31e19f44bc460 
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 "../guardrail/StatsdStats.h"
21#include "GaugeMetricProducer.h"
22#include "../stats_log_util.h"
23
24#include <cutils/log.h>
25
26using android::util::FIELD_COUNT_REPEATED;
27using android::util::FIELD_TYPE_BOOL;
28using android::util::FIELD_TYPE_FLOAT;
29using android::util::FIELD_TYPE_INT32;
30using android::util::FIELD_TYPE_INT64;
31using android::util::FIELD_TYPE_MESSAGE;
32using android::util::FIELD_TYPE_STRING;
33using android::util::ProtoOutputStream;
34using std::map;
35using std::string;
36using std::unordered_map;
37using std::vector;
38using std::make_shared;
39using std::shared_ptr;
40
41namespace android {
42namespace os {
43namespace statsd {
44
45// for StatsLogReport
46const int FIELD_ID_ID = 1;
47const int FIELD_ID_GAUGE_METRICS = 8;
48const int FIELD_ID_TIME_BASE = 9;
49const int FIELD_ID_BUCKET_SIZE = 10;
50const int FIELD_ID_DIMENSION_PATH_IN_WHAT = 11;
51const int FIELD_ID_DIMENSION_PATH_IN_CONDITION = 12;
52// for GaugeMetricDataWrapper
53const int FIELD_ID_DATA = 1;
54const int FIELD_ID_SKIPPED = 2;
55const int FIELD_ID_SKIPPED_START_MILLIS = 3;
56const int FIELD_ID_SKIPPED_END_MILLIS = 4;
57// for GaugeMetricData
58const int FIELD_ID_DIMENSION_IN_WHAT = 1;
59const int FIELD_ID_DIMENSION_IN_CONDITION = 2;
60const int FIELD_ID_BUCKET_INFO = 3;
61const int FIELD_ID_DIMENSION_LEAF_IN_WHAT = 4;
62const int FIELD_ID_DIMENSION_LEAF_IN_CONDITION = 5;
63// for GaugeBucketInfo
64const int FIELD_ID_ATOM = 3;
65const int FIELD_ID_ELAPSED_ATOM_TIMESTAMP = 4;
66const int FIELD_ID_WALL_CLOCK_ATOM_TIMESTAMP = 5;
67const int FIELD_ID_BUCKET_NUM = 6;
68const int FIELD_ID_START_BUCKET_ELAPSED_MILLIS = 7;
69const int FIELD_ID_END_BUCKET_ELAPSED_MILLIS = 8;
70
71GaugeMetricProducer::GaugeMetricProducer(const ConfigKey& key, const GaugeMetric& metric,
72                                         const int conditionIndex,
73                                         const sp<ConditionWizard>& wizard, const int pullTagId,
74                                         const int64_t timeBaseNs, const int64_t startTimeNs,
75                                         shared_ptr<StatsPullerManager> statsPullerManager)
76    : MetricProducer(metric.id(), key, timeBaseNs, conditionIndex, wizard),
77      mStatsPullerManager(statsPullerManager),
78      mPullTagId(pullTagId),
79      mMinBucketSizeNs(metric.min_bucket_size_nanos()),
80      mDimensionSoftLimit(StatsdStats::kAtomDimensionKeySizeLimitMap.find(pullTagId) !=
81                                          StatsdStats::kAtomDimensionKeySizeLimitMap.end()
82                                  ? StatsdStats::kAtomDimensionKeySizeLimitMap.at(pullTagId).first
83                                  : StatsdStats::kDimensionKeySizeSoftLimit),
84      mDimensionHardLimit(StatsdStats::kAtomDimensionKeySizeLimitMap.find(pullTagId) !=
85                                          StatsdStats::kAtomDimensionKeySizeLimitMap.end()
86                                  ? StatsdStats::kAtomDimensionKeySizeLimitMap.at(pullTagId).second
87                                  : StatsdStats::kDimensionKeySizeHardLimit) {
88    mCurrentSlicedBucket = std::make_shared<DimToGaugeAtomsMap>();
89    mCurrentSlicedBucketForAnomaly = std::make_shared<DimToValMap>();
90    int64_t bucketSizeMills = 0;
91    if (metric.has_bucket()) {
92        bucketSizeMills = TimeUnitToBucketSizeInMillisGuardrailed(key.GetUid(), metric.bucket());
93    } else {
94        bucketSizeMills = TimeUnitToBucketSizeInMillis(ONE_HOUR);
95    }
96    mBucketSizeNs = bucketSizeMills * 1000000;
97
98    mSamplingType = metric.sampling_type();
99    if (!metric.gauge_fields_filter().include_all()) {
100        translateFieldMatcher(metric.gauge_fields_filter().fields(), &mFieldMatchers);
101    }
102
103    // TODO: use UidMap if uid->pkg_name is required
104    if (metric.has_dimensions_in_what()) {
105        translateFieldMatcher(metric.dimensions_in_what(), &mDimensionsInWhat);
106        mContainANYPositionInDimensionsInWhat = HasPositionANY(metric.dimensions_in_what());
107    }
108
109    if (metric.has_dimensions_in_condition()) {
110        translateFieldMatcher(metric.dimensions_in_condition(), &mDimensionsInCondition);
111    }
112
113    if (metric.links().size() > 0) {
114        for (const auto& link : metric.links()) {
115            Metric2Condition mc;
116            mc.conditionId = link.condition();
117            translateFieldMatcher(link.fields_in_what(), &mc.metricFields);
118            translateFieldMatcher(link.fields_in_condition(), &mc.conditionFields);
119            mMetric2ConditionLinks.push_back(mc);
120        }
121    }
122    mConditionSliced = (metric.links().size() > 0) || (mDimensionsInCondition.size() > 0);
123    mSliceByPositionALL = HasPositionALL(metric.dimensions_in_what()) ||
124            HasPositionALL(metric.dimensions_in_condition());
125
126    flushIfNeededLocked(startTimeNs);
127    // Kicks off the puller immediately.
128    if (mPullTagId != -1 && mSamplingType == GaugeMetric::RANDOM_ONE_SAMPLE) {
129        mStatsPullerManager->RegisterReceiver(
130                mPullTagId, this, getCurrentBucketEndTimeNs(), mBucketSizeNs);
131    }
132
133    VLOG("Gauge metric %lld created. bucket size %lld start_time: %lld sliced %d",
134         (long long)metric.id(), (long long)mBucketSizeNs, (long long)mTimeBaseNs,
135         mConditionSliced);
136}
137
138// for testing
139GaugeMetricProducer::GaugeMetricProducer(const ConfigKey& key, const GaugeMetric& metric,
140                                         const int conditionIndex,
141                                         const sp<ConditionWizard>& wizard, const int pullTagId,
142                                         const int64_t timeBaseNs, const int64_t startTimeNs)
143    : GaugeMetricProducer(key, metric, conditionIndex, wizard, pullTagId, timeBaseNs, startTimeNs,
144                          make_shared<StatsPullerManager>()) {
145}
146
147GaugeMetricProducer::~GaugeMetricProducer() {
148    VLOG("~GaugeMetricProducer() called");
149    if (mPullTagId != -1 && mSamplingType == GaugeMetric::RANDOM_ONE_SAMPLE) {
150        mStatsPullerManager->UnRegisterReceiver(mPullTagId, this);
151    }
152}
153
154void GaugeMetricProducer::dumpStatesLocked(FILE* out, bool verbose) const {
155    if (mCurrentSlicedBucket == nullptr ||
156        mCurrentSlicedBucket->size() == 0) {
157        return;
158    }
159
160    fprintf(out, "GaugeMetric %lld dimension size %lu\n", (long long)mMetricId,
161            (unsigned long)mCurrentSlicedBucket->size());
162    if (verbose) {
163        for (const auto& it : *mCurrentSlicedBucket) {
164            fprintf(out, "\t(what)%s\t(condition)%s  %d atoms\n",
165                it.first.getDimensionKeyInWhat().toString().c_str(),
166                it.first.getDimensionKeyInCondition().toString().c_str(),
167                (int)it.second.size());
168        }
169    }
170}
171
172void GaugeMetricProducer::clearPastBucketsLocked(const int64_t dumpTimeNs) {
173    flushIfNeededLocked(dumpTimeNs);
174    mPastBuckets.clear();
175    mSkippedBuckets.clear();
176}
177
178void GaugeMetricProducer::onDumpReportLocked(const int64_t dumpTimeNs,
179                                             const bool include_current_partial_bucket,
180                                             std::set<string> *str_set,
181                                             ProtoOutputStream* protoOutput) {
182    VLOG("Gauge metric %lld report now...", (long long)mMetricId);
183    if (include_current_partial_bucket) {
184        flushLocked(dumpTimeNs);
185    } else {
186        flushIfNeededLocked(dumpTimeNs);
187    }
188
189    if (mPastBuckets.empty()) {
190        return;
191    }
192
193    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_ID, (long long)mMetricId);
194    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_TIME_BASE, (long long)mTimeBaseNs);
195    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_BUCKET_SIZE, (long long)mBucketSizeNs);
196
197    // Fills the dimension path if not slicing by ALL.
198    if (!mSliceByPositionALL) {
199        if (!mDimensionsInWhat.empty()) {
200            uint64_t dimenPathToken = protoOutput->start(
201                    FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_PATH_IN_WHAT);
202            writeDimensionPathToProto(mDimensionsInWhat, protoOutput);
203            protoOutput->end(dimenPathToken);
204        }
205        if (!mDimensionsInCondition.empty()) {
206            uint64_t dimenPathToken = protoOutput->start(
207                    FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_PATH_IN_CONDITION);
208            writeDimensionPathToProto(mDimensionsInCondition, protoOutput);
209            protoOutput->end(dimenPathToken);
210        }
211    }
212
213    uint64_t protoToken = protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_ID_GAUGE_METRICS);
214
215    for (const auto& pair : mSkippedBuckets) {
216        uint64_t wrapperToken =
217                protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_SKIPPED);
218        protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_SKIPPED_START_MILLIS,
219                           (long long)(NanoToMillis(pair.first)));
220        protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_SKIPPED_END_MILLIS,
221                           (long long)(NanoToMillis(pair.second)));
222        protoOutput->end(wrapperToken);
223    }
224    mSkippedBuckets.clear();
225
226    for (const auto& pair : mPastBuckets) {
227        const MetricDimensionKey& dimensionKey = pair.first;
228
229        VLOG("Gauge dimension key %s", dimensionKey.toString().c_str());
230        uint64_t wrapperToken =
231                protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_DATA);
232
233        // First fill dimension.
234        if (mSliceByPositionALL) {
235            uint64_t dimensionToken = protoOutput->start(
236                    FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_IN_WHAT);
237            writeDimensionToProto(dimensionKey.getDimensionKeyInWhat(), str_set, protoOutput);
238            protoOutput->end(dimensionToken);
239
240            if (dimensionKey.hasDimensionKeyInCondition()) {
241                uint64_t dimensionInConditionToken = protoOutput->start(
242                        FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_IN_CONDITION);
243                writeDimensionToProto(dimensionKey.getDimensionKeyInCondition(),
244                                      str_set, protoOutput);
245                protoOutput->end(dimensionInConditionToken);
246            }
247        } else {
248            writeDimensionLeafNodesToProto(dimensionKey.getDimensionKeyInWhat(),
249                                           FIELD_ID_DIMENSION_LEAF_IN_WHAT, str_set, protoOutput);
250            if (dimensionKey.hasDimensionKeyInCondition()) {
251                writeDimensionLeafNodesToProto(dimensionKey.getDimensionKeyInCondition(),
252                                               FIELD_ID_DIMENSION_LEAF_IN_CONDITION,
253                                               str_set, protoOutput);
254            }
255        }
256
257        // Then fill bucket_info (GaugeBucketInfo).
258        for (const auto& bucket : pair.second) {
259            uint64_t bucketInfoToken = protoOutput->start(
260                    FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_BUCKET_INFO);
261
262            if (bucket.mBucketEndNs - bucket.mBucketStartNs != mBucketSizeNs) {
263                protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_START_BUCKET_ELAPSED_MILLIS,
264                                   (long long)NanoToMillis(bucket.mBucketStartNs));
265                protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_END_BUCKET_ELAPSED_MILLIS,
266                                   (long long)NanoToMillis(bucket.mBucketEndNs));
267            } else {
268                protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_BUCKET_NUM,
269                                   (long long)(getBucketNumFromEndTimeNs(bucket.mBucketEndNs)));
270            }
271
272            if (!bucket.mGaugeAtoms.empty()) {
273                for (const auto& atom : bucket.mGaugeAtoms) {
274                    uint64_t atomsToken =
275                        protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED |
276                                           FIELD_ID_ATOM);
277                    writeFieldValueTreeToStream(mTagId, *(atom.mFields), protoOutput);
278                    protoOutput->end(atomsToken);
279                }
280                const bool truncateTimestamp =
281                        android::util::AtomsInfo::kNotTruncatingTimestampAtomWhiteList.find(
282                                mTagId) ==
283                        android::util::AtomsInfo::kNotTruncatingTimestampAtomWhiteList.end();
284                for (const auto& atom : bucket.mGaugeAtoms) {
285                    const int64_t elapsedTimestampNs =  truncateTimestamp ?
286                        truncateTimestampNsToFiveMinutes(atom.mElapsedTimestamps) :
287                            atom.mElapsedTimestamps;
288                    const int64_t wallClockNs = truncateTimestamp ?
289                        truncateTimestampNsToFiveMinutes(atom.mWallClockTimestampNs) :
290                            atom.mWallClockTimestampNs;
291                    protoOutput->write(
292                        FIELD_TYPE_INT64 | FIELD_COUNT_REPEATED | FIELD_ID_ELAPSED_ATOM_TIMESTAMP,
293                        (long long)elapsedTimestampNs);
294                    protoOutput->write(
295                        FIELD_TYPE_INT64 | FIELD_COUNT_REPEATED |
296                            FIELD_ID_WALL_CLOCK_ATOM_TIMESTAMP,
297                        (long long)wallClockNs);
298                }
299            }
300            protoOutput->end(bucketInfoToken);
301            VLOG("Gauge \t bucket [%lld - %lld] includes %d atoms.",
302                 (long long)bucket.mBucketStartNs, (long long)bucket.mBucketEndNs,
303                 (int)bucket.mGaugeAtoms.size());
304        }
305        protoOutput->end(wrapperToken);
306    }
307    protoOutput->end(protoToken);
308
309    mPastBuckets.clear();
310    // TODO: Clear mDimensionKeyMap once the report is dumped.
311}
312
313void GaugeMetricProducer::pullLocked(const int64_t timestampNs) {
314    bool triggerPuller = false;
315    switch(mSamplingType) {
316        // When the metric wants to do random sampling and there is already one gauge atom for the
317        // current bucket, do not do it again.
318        case GaugeMetric::RANDOM_ONE_SAMPLE: {
319            triggerPuller = mCondition && mCurrentSlicedBucket->empty();
320            break;
321        }
322        case GaugeMetric::ALL_CONDITION_CHANGES: {
323            triggerPuller = true;
324            break;
325        }
326        case GaugeMetric::CONDITION_CHANGE_TO_TRUE: {
327            triggerPuller = mCondition;
328            break;
329        }
330        default:
331            break;
332    }
333    if (!triggerPuller) {
334        return;
335    }
336
337    vector<std::shared_ptr<LogEvent>> allData;
338    if (!mStatsPullerManager->Pull(mPullTagId, timestampNs, &allData)) {
339        ALOGE("Gauge Stats puller failed for tag: %d", mPullTagId);
340        return;
341    }
342
343    for (const auto& data : allData) {
344        onMatchedLogEventLocked(0, *data);
345    }
346}
347
348void GaugeMetricProducer::onConditionChangedLocked(const bool conditionMet,
349                                                   const int64_t eventTimeNs) {
350    VLOG("GaugeMetric %lld onConditionChanged", (long long)mMetricId);
351    flushIfNeededLocked(eventTimeNs);
352    mCondition = conditionMet;
353
354    if (mPullTagId != -1) {
355        pullLocked(eventTimeNs);
356    }  // else: Push mode. No need to proactively pull the gauge data.
357}
358
359void GaugeMetricProducer::onSlicedConditionMayChangeLocked(bool overallCondition,
360                                                           const int64_t eventTimeNs) {
361    VLOG("GaugeMetric %lld onSlicedConditionMayChange overall condition %d", (long long)mMetricId,
362         overallCondition);
363    flushIfNeededLocked(eventTimeNs);
364    // If the condition is sliced, mCondition is true if any of the dimensions is true. And we will
365    // pull for every dimension.
366    mCondition = overallCondition;
367    if (mPullTagId != -1) {
368        pullLocked(eventTimeNs);
369    }  // else: Push mode. No need to proactively pull the gauge data.
370}
371
372std::shared_ptr<vector<FieldValue>> GaugeMetricProducer::getGaugeFields(const LogEvent& event) {
373    if (mFieldMatchers.size() > 0) {
374        std::shared_ptr<vector<FieldValue>> gaugeFields = std::make_shared<vector<FieldValue>>();
375        filterGaugeValues(mFieldMatchers, event.getValues(), gaugeFields.get());
376        return gaugeFields;
377    } else {
378        return std::make_shared<vector<FieldValue>>(event.getValues());
379    }
380}
381
382void GaugeMetricProducer::onDataPulled(const std::vector<std::shared_ptr<LogEvent>>& allData) {
383    std::lock_guard<std::mutex> lock(mMutex);
384    if (allData.size() == 0) {
385        return;
386    }
387    for (const auto& data : allData) {
388        onMatchedLogEventLocked(0, *data);
389    }
390}
391
392bool GaugeMetricProducer::hitGuardRailLocked(const MetricDimensionKey& newKey) {
393    if (mCurrentSlicedBucket->find(newKey) != mCurrentSlicedBucket->end()) {
394        return false;
395    }
396    // 1. Report the tuple count if the tuple count > soft limit
397    if (mCurrentSlicedBucket->size() > mDimensionSoftLimit - 1) {
398        size_t newTupleCount = mCurrentSlicedBucket->size() + 1;
399        StatsdStats::getInstance().noteMetricDimensionSize(mConfigKey, mMetricId, newTupleCount);
400        // 2. Don't add more tuples, we are above the allowed threshold. Drop the data.
401        if (newTupleCount > mDimensionHardLimit) {
402            ALOGE("GaugeMetric %lld dropping data for dimension key %s",
403                (long long)mMetricId, newKey.toString().c_str());
404            return true;
405        }
406    }
407
408    return false;
409}
410
411void GaugeMetricProducer::onMatchedLogEventInternalLocked(
412        const size_t matcherIndex, const MetricDimensionKey& eventKey,
413        const ConditionKey& conditionKey, bool condition,
414        const LogEvent& event) {
415    if (condition == false) {
416        return;
417    }
418    int64_t eventTimeNs = event.GetElapsedTimestampNs();
419    mTagId = event.GetTagId();
420    if (eventTimeNs < mCurrentBucketStartTimeNs) {
421        VLOG("Gauge Skip event due to late arrival: %lld vs %lld", (long long)eventTimeNs,
422             (long long)mCurrentBucketStartTimeNs);
423        return;
424    }
425    flushIfNeededLocked(eventTimeNs);
426
427    // When gauge metric wants to randomly sample the output atom, we just simply use the first
428    // gauge in the given bucket.
429    if (mCurrentSlicedBucket->find(eventKey) != mCurrentSlicedBucket->end() &&
430        mSamplingType == GaugeMetric::RANDOM_ONE_SAMPLE) {
431        return;
432    }
433    if (hitGuardRailLocked(eventKey)) {
434        return;
435    }
436    GaugeAtom gaugeAtom(getGaugeFields(event), eventTimeNs, getWallClockNs());
437    (*mCurrentSlicedBucket)[eventKey].push_back(gaugeAtom);
438    // Anomaly detection on gauge metric only works when there is one numeric
439    // field specified.
440    if (mAnomalyTrackers.size() > 0) {
441        if (gaugeAtom.mFields->size() == 1) {
442            const Value& value = gaugeAtom.mFields->begin()->mValue;
443            long gaugeVal = 0;
444            if (value.getType() == INT) {
445                gaugeVal = (long)value.int_value;
446            } else if (value.getType() == LONG) {
447                gaugeVal = value.long_value;
448            }
449            for (auto& tracker : mAnomalyTrackers) {
450                tracker->detectAndDeclareAnomaly(eventTimeNs, mCurrentBucketNum, eventKey,
451                                                 gaugeVal);
452            }
453        }
454    }
455}
456
457void GaugeMetricProducer::updateCurrentSlicedBucketForAnomaly() {
458    for (const auto& slice : *mCurrentSlicedBucket) {
459        if (slice.second.empty()) {
460            continue;
461        }
462        const Value& value = slice.second.front().mFields->front().mValue;
463        long gaugeVal = 0;
464        if (value.getType() == INT) {
465            gaugeVal = (long)value.int_value;
466        } else if (value.getType() == LONG) {
467            gaugeVal = value.long_value;
468        }
469        (*mCurrentSlicedBucketForAnomaly)[slice.first] = gaugeVal;
470    }
471}
472
473void GaugeMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
474    flushIfNeededLocked(dropTimeNs);
475    mPastBuckets.clear();
476}
477
478// When a new matched event comes in, we check if event falls into the current
479// bucket. If not, flush the old counter to past buckets and initialize the new
480// bucket.
481// if data is pushed, onMatchedLogEvent will only be called through onConditionChanged() inside
482// the GaugeMetricProducer while holding the lock.
483void GaugeMetricProducer::flushIfNeededLocked(const int64_t& eventTimeNs) {
484    int64_t currentBucketEndTimeNs = getCurrentBucketEndTimeNs();
485
486    if (eventTimeNs < currentBucketEndTimeNs) {
487        VLOG("Gauge eventTime is %lld, less than next bucket start time %lld",
488             (long long)eventTimeNs, (long long)(mCurrentBucketStartTimeNs + mBucketSizeNs));
489        return;
490    }
491
492    flushCurrentBucketLocked(eventTimeNs);
493
494    // Adjusts the bucket start and end times.
495    int64_t numBucketsForward = 1 + (eventTimeNs - currentBucketEndTimeNs) / mBucketSizeNs;
496    mCurrentBucketStartTimeNs = currentBucketEndTimeNs + (numBucketsForward - 1) * mBucketSizeNs;
497    mCurrentBucketNum += numBucketsForward;
498    VLOG("Gauge metric %lld: new bucket start time: %lld", (long long)mMetricId,
499         (long long)mCurrentBucketStartTimeNs);
500}
501
502void GaugeMetricProducer::flushCurrentBucketLocked(const int64_t& eventTimeNs) {
503    int64_t fullBucketEndTimeNs = getCurrentBucketEndTimeNs();
504
505    GaugeBucket info;
506    info.mBucketStartNs = mCurrentBucketStartTimeNs;
507    if (eventTimeNs < fullBucketEndTimeNs) {
508        info.mBucketEndNs = eventTimeNs;
509    } else {
510        info.mBucketEndNs = fullBucketEndTimeNs;
511    }
512
513    if (info.mBucketEndNs - mCurrentBucketStartTimeNs >= mMinBucketSizeNs) {
514        for (const auto& slice : *mCurrentSlicedBucket) {
515            info.mGaugeAtoms = slice.second;
516            auto& bucketList = mPastBuckets[slice.first];
517            bucketList.push_back(info);
518            VLOG("Gauge gauge metric %lld, dump key value: %s", (long long)mMetricId,
519                 slice.first.toString().c_str());
520        }
521    } else {
522        mSkippedBuckets.emplace_back(info.mBucketStartNs, info.mBucketEndNs);
523    }
524
525    // If we have anomaly trackers, we need to update the partial bucket values.
526    if (mAnomalyTrackers.size() > 0) {
527        updateCurrentSlicedBucketForAnomaly();
528
529        if (eventTimeNs > fullBucketEndTimeNs) {
530            // This is known to be a full bucket, so send this data to the anomaly tracker.
531            for (auto& tracker : mAnomalyTrackers) {
532                tracker->addPastBucket(mCurrentSlicedBucketForAnomaly, mCurrentBucketNum);
533            }
534            mCurrentSlicedBucketForAnomaly = std::make_shared<DimToValMap>();
535        }
536    }
537
538    mCurrentSlicedBucket = std::make_shared<DimToGaugeAtomsMap>();
539}
540
541size_t GaugeMetricProducer::byteSizeLocked() const {
542    size_t totalSize = 0;
543    for (const auto& pair : mPastBuckets) {
544        for (const auto& bucket : pair.second) {
545            totalSize += bucket.mGaugeAtoms.size() * sizeof(GaugeAtom);
546            for (const auto& atom : bucket.mGaugeAtoms) {
547                if (atom.mFields != nullptr) {
548                    totalSize += atom.mFields->size() * sizeof(FieldValue);
549                }
550            }
551        }
552    }
553    return totalSize;
554}
555
556}  // namespace statsd
557}  // namespace os
558}  // namespace android
559