GaugeMetricProducer.cpp revision ec3c7a3e58757a23afbb494b5fd9f1a1081fa495 
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    flushIfNeededLocked(dumpTimeNs);
190    if (mPastBuckets.empty()) {
191        return;
192    }
193
194    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_ID, (long long)mMetricId);
195    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_TIME_BASE, (long long)mTimeBaseNs);
196    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_BUCKET_SIZE, (long long)mBucketSizeNs);
197
198    // Fills the dimension path if not slicing by ALL.
199    if (!mSliceByPositionALL) {
200        if (!mDimensionsInWhat.empty()) {
201            uint64_t dimenPathToken = protoOutput->start(
202                    FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_PATH_IN_WHAT);
203            writeDimensionPathToProto(mDimensionsInWhat, protoOutput);
204            protoOutput->end(dimenPathToken);
205        }
206        if (!mDimensionsInCondition.empty()) {
207            uint64_t dimenPathToken = protoOutput->start(
208                    FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_PATH_IN_CONDITION);
209            writeDimensionPathToProto(mDimensionsInCondition, protoOutput);
210            protoOutput->end(dimenPathToken);
211        }
212    }
213
214    uint64_t protoToken = protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_ID_GAUGE_METRICS);
215
216    for (const auto& pair : mSkippedBuckets) {
217        uint64_t wrapperToken =
218                protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_SKIPPED);
219        protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_SKIPPED_START_MILLIS,
220                           (long long)(NanoToMillis(pair.first)));
221        protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_SKIPPED_END_MILLIS,
222                           (long long)(NanoToMillis(pair.second)));
223        protoOutput->end(wrapperToken);
224    }
225    mSkippedBuckets.clear();
226
227    for (const auto& pair : mPastBuckets) {
228        const MetricDimensionKey& dimensionKey = pair.first;
229
230        VLOG("Gauge dimension key %s", dimensionKey.toString().c_str());
231        uint64_t wrapperToken =
232                protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_DATA);
233
234        // First fill dimension.
235        if (mSliceByPositionALL) {
236            uint64_t dimensionToken = protoOutput->start(
237                    FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_IN_WHAT);
238            writeDimensionToProto(dimensionKey.getDimensionKeyInWhat(), str_set, protoOutput);
239            protoOutput->end(dimensionToken);
240
241            if (dimensionKey.hasDimensionKeyInCondition()) {
242                uint64_t dimensionInConditionToken = protoOutput->start(
243                        FIELD_TYPE_MESSAGE | FIELD_ID_DIMENSION_IN_CONDITION);
244                writeDimensionToProto(dimensionKey.getDimensionKeyInCondition(),
245                                      str_set, protoOutput);
246                protoOutput->end(dimensionInConditionToken);
247            }
248        } else {
249            writeDimensionLeafNodesToProto(dimensionKey.getDimensionKeyInWhat(),
250                                           FIELD_ID_DIMENSION_LEAF_IN_WHAT, str_set, protoOutput);
251            if (dimensionKey.hasDimensionKeyInCondition()) {
252                writeDimensionLeafNodesToProto(dimensionKey.getDimensionKeyInCondition(),
253                                               FIELD_ID_DIMENSION_LEAF_IN_CONDITION,
254                                               str_set, protoOutput);
255            }
256        }
257
258        // Then fill bucket_info (GaugeBucketInfo).
259        for (const auto& bucket : pair.second) {
260            uint64_t bucketInfoToken = protoOutput->start(
261                    FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_BUCKET_INFO);
262
263            if (bucket.mBucketEndNs - bucket.mBucketStartNs != mBucketSizeNs) {
264                protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_START_BUCKET_ELAPSED_MILLIS,
265                                   (long long)NanoToMillis(bucket.mBucketStartNs));
266                protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_END_BUCKET_ELAPSED_MILLIS,
267                                   (long long)NanoToMillis(bucket.mBucketEndNs));
268            } else {
269                protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_BUCKET_NUM,
270                                   (long long)(getBucketNumFromEndTimeNs(bucket.mBucketEndNs)));
271            }
272
273            if (!bucket.mGaugeAtoms.empty()) {
274                for (const auto& atom : bucket.mGaugeAtoms) {
275                    uint64_t atomsToken =
276                        protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED |
277                                           FIELD_ID_ATOM);
278                    writeFieldValueTreeToStream(mTagId, *(atom.mFields), protoOutput);
279                    protoOutput->end(atomsToken);
280                }
281                const bool truncateTimestamp =
282                        android::util::AtomsInfo::kNotTruncatingTimestampAtomWhiteList.find(
283                                mTagId) ==
284                        android::util::AtomsInfo::kNotTruncatingTimestampAtomWhiteList.end();
285                for (const auto& atom : bucket.mGaugeAtoms) {
286                    const int64_t elapsedTimestampNs =  truncateTimestamp ?
287                        truncateTimestampNsToFiveMinutes(atom.mElapsedTimestamps) :
288                            atom.mElapsedTimestamps;
289                    const int64_t wallClockNs = truncateTimestamp ?
290                        truncateTimestampNsToFiveMinutes(atom.mWallClockTimestampNs) :
291                            atom.mWallClockTimestampNs;
292                    protoOutput->write(
293                        FIELD_TYPE_INT64 | FIELD_COUNT_REPEATED | FIELD_ID_ELAPSED_ATOM_TIMESTAMP,
294                        (long long)elapsedTimestampNs);
295                    protoOutput->write(
296                        FIELD_TYPE_INT64 | FIELD_COUNT_REPEATED |
297                            FIELD_ID_WALL_CLOCK_ATOM_TIMESTAMP,
298                        (long long)wallClockNs);
299                }
300            }
301            protoOutput->end(bucketInfoToken);
302            VLOG("Gauge \t bucket [%lld - %lld] includes %d atoms.",
303                 (long long)bucket.mBucketStartNs, (long long)bucket.mBucketEndNs,
304                 (int)bucket.mGaugeAtoms.size());
305        }
306        protoOutput->end(wrapperToken);
307    }
308    protoOutput->end(protoToken);
309
310    mPastBuckets.clear();
311    // TODO: Clear mDimensionKeyMap once the report is dumped.
312}
313
314void GaugeMetricProducer::pullLocked(const int64_t timestampNs) {
315    bool triggerPuller = false;
316    switch(mSamplingType) {
317        // When the metric wants to do random sampling and there is already one gauge atom for the
318        // current bucket, do not do it again.
319        case GaugeMetric::RANDOM_ONE_SAMPLE: {
320            triggerPuller = mCondition && mCurrentSlicedBucket->empty();
321            break;
322        }
323        case GaugeMetric::ALL_CONDITION_CHANGES: {
324            triggerPuller = true;
325            break;
326        }
327        case GaugeMetric::CONDITION_CHANGE_TO_TRUE: {
328            triggerPuller = mCondition;
329            break;
330        }
331        default:
332            break;
333    }
334    if (!triggerPuller) {
335        return;
336    }
337
338    vector<std::shared_ptr<LogEvent>> allData;
339    if (!mStatsPullerManager->Pull(mPullTagId, timestampNs, &allData)) {
340        ALOGE("Gauge Stats puller failed for tag: %d", mPullTagId);
341        return;
342    }
343
344    for (const auto& data : allData) {
345        onMatchedLogEventLocked(0, *data);
346    }
347}
348
349void GaugeMetricProducer::onConditionChangedLocked(const bool conditionMet,
350                                                   const int64_t eventTimeNs) {
351    VLOG("GaugeMetric %lld onConditionChanged", (long long)mMetricId);
352    flushIfNeededLocked(eventTimeNs);
353    mCondition = conditionMet;
354
355    if (mPullTagId != -1) {
356        pullLocked(eventTimeNs);
357    }  // else: Push mode. No need to proactively pull the gauge data.
358}
359
360void GaugeMetricProducer::onSlicedConditionMayChangeLocked(bool overallCondition,
361                                                           const int64_t eventTimeNs) {
362    VLOG("GaugeMetric %lld onSlicedConditionMayChange overall condition %d", (long long)mMetricId,
363         overallCondition);
364    flushIfNeededLocked(eventTimeNs);
365    // If the condition is sliced, mCondition is true if any of the dimensions is true. And we will
366    // pull for every dimension.
367    mCondition = overallCondition;
368    if (mPullTagId != -1) {
369        pullLocked(eventTimeNs);
370    }  // else: Push mode. No need to proactively pull the gauge data.
371}
372
373std::shared_ptr<vector<FieldValue>> GaugeMetricProducer::getGaugeFields(const LogEvent& event) {
374    if (mFieldMatchers.size() > 0) {
375        std::shared_ptr<vector<FieldValue>> gaugeFields = std::make_shared<vector<FieldValue>>();
376        filterGaugeValues(mFieldMatchers, event.getValues(), gaugeFields.get());
377        return gaugeFields;
378    } else {
379        return std::make_shared<vector<FieldValue>>(event.getValues());
380    }
381}
382
383void GaugeMetricProducer::onDataPulled(const std::vector<std::shared_ptr<LogEvent>>& allData) {
384    std::lock_guard<std::mutex> lock(mMutex);
385    if (allData.size() == 0) {
386        return;
387    }
388    for (const auto& data : allData) {
389        onMatchedLogEventLocked(0, *data);
390    }
391}
392
393bool GaugeMetricProducer::hitGuardRailLocked(const MetricDimensionKey& newKey) {
394    if (mCurrentSlicedBucket->find(newKey) != mCurrentSlicedBucket->end()) {
395        return false;
396    }
397    // 1. Report the tuple count if the tuple count > soft limit
398    if (mCurrentSlicedBucket->size() > mDimensionSoftLimit - 1) {
399        size_t newTupleCount = mCurrentSlicedBucket->size() + 1;
400        StatsdStats::getInstance().noteMetricDimensionSize(mConfigKey, mMetricId, newTupleCount);
401        // 2. Don't add more tuples, we are above the allowed threshold. Drop the data.
402        if (newTupleCount > mDimensionHardLimit) {
403            ALOGE("GaugeMetric %lld dropping data for dimension key %s",
404                (long long)mMetricId, newKey.toString().c_str());
405            return true;
406        }
407    }
408
409    return false;
410}
411
412void GaugeMetricProducer::onMatchedLogEventInternalLocked(
413        const size_t matcherIndex, const MetricDimensionKey& eventKey,
414        const ConditionKey& conditionKey, bool condition,
415        const LogEvent& event) {
416    if (condition == false) {
417        return;
418    }
419    int64_t eventTimeNs = event.GetElapsedTimestampNs();
420    mTagId = event.GetTagId();
421    if (eventTimeNs < mCurrentBucketStartTimeNs) {
422        VLOG("Gauge Skip event due to late arrival: %lld vs %lld", (long long)eventTimeNs,
423             (long long)mCurrentBucketStartTimeNs);
424        return;
425    }
426    flushIfNeededLocked(eventTimeNs);
427
428    // When gauge metric wants to randomly sample the output atom, we just simply use the first
429    // gauge in the given bucket.
430    if (mCurrentSlicedBucket->find(eventKey) != mCurrentSlicedBucket->end() &&
431        mSamplingType == GaugeMetric::RANDOM_ONE_SAMPLE) {
432        return;
433    }
434    if (hitGuardRailLocked(eventKey)) {
435        return;
436    }
437    GaugeAtom gaugeAtom(getGaugeFields(event), eventTimeNs, getWallClockNs());
438    (*mCurrentSlicedBucket)[eventKey].push_back(gaugeAtom);
439    // Anomaly detection on gauge metric only works when there is one numeric
440    // field specified.
441    if (mAnomalyTrackers.size() > 0) {
442        if (gaugeAtom.mFields->size() == 1) {
443            const Value& value = gaugeAtom.mFields->begin()->mValue;
444            long gaugeVal = 0;
445            if (value.getType() == INT) {
446                gaugeVal = (long)value.int_value;
447            } else if (value.getType() == LONG) {
448                gaugeVal = value.long_value;
449            }
450            for (auto& tracker : mAnomalyTrackers) {
451                tracker->detectAndDeclareAnomaly(eventTimeNs, mCurrentBucketNum, eventKey,
452                                                 gaugeVal);
453            }
454        }
455    }
456}
457
458void GaugeMetricProducer::updateCurrentSlicedBucketForAnomaly() {
459    for (const auto& slice : *mCurrentSlicedBucket) {
460        if (slice.second.empty()) {
461            continue;
462        }
463        const Value& value = slice.second.front().mFields->front().mValue;
464        long gaugeVal = 0;
465        if (value.getType() == INT) {
466            gaugeVal = (long)value.int_value;
467        } else if (value.getType() == LONG) {
468            gaugeVal = value.long_value;
469        }
470        (*mCurrentSlicedBucketForAnomaly)[slice.first] = gaugeVal;
471    }
472}
473
474void GaugeMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
475    flushIfNeededLocked(dropTimeNs);
476    mPastBuckets.clear();
477}
478
479// When a new matched event comes in, we check if event falls into the current
480// bucket. If not, flush the old counter to past buckets and initialize the new
481// bucket.
482// if data is pushed, onMatchedLogEvent will only be called through onConditionChanged() inside
483// the GaugeMetricProducer while holding the lock.
484void GaugeMetricProducer::flushIfNeededLocked(const int64_t& eventTimeNs) {
485    int64_t currentBucketEndTimeNs = getCurrentBucketEndTimeNs();
486
487    if (eventTimeNs < currentBucketEndTimeNs) {
488        VLOG("Gauge eventTime is %lld, less than next bucket start time %lld",
489             (long long)eventTimeNs, (long long)(mCurrentBucketStartTimeNs + mBucketSizeNs));
490        return;
491    }
492
493    flushCurrentBucketLocked(eventTimeNs);
494
495    // Adjusts the bucket start and end times.
496    int64_t numBucketsForward = 1 + (eventTimeNs - currentBucketEndTimeNs) / mBucketSizeNs;
497    mCurrentBucketStartTimeNs = currentBucketEndTimeNs + (numBucketsForward - 1) * mBucketSizeNs;
498    mCurrentBucketNum += numBucketsForward;
499    VLOG("Gauge metric %lld: new bucket start time: %lld", (long long)mMetricId,
500         (long long)mCurrentBucketStartTimeNs);
501}
502
503void GaugeMetricProducer::flushCurrentBucketLocked(const int64_t& eventTimeNs) {
504    int64_t fullBucketEndTimeNs = getCurrentBucketEndTimeNs();
505
506    GaugeBucket info;
507    info.mBucketStartNs = mCurrentBucketStartTimeNs;
508    if (eventTimeNs < fullBucketEndTimeNs) {
509        info.mBucketEndNs = eventTimeNs;
510    } else {
511        info.mBucketEndNs = fullBucketEndTimeNs;
512    }
513
514    if (info.mBucketEndNs - mCurrentBucketStartTimeNs >= mMinBucketSizeNs) {
515        for (const auto& slice : *mCurrentSlicedBucket) {
516            info.mGaugeAtoms = slice.second;
517            auto& bucketList = mPastBuckets[slice.first];
518            bucketList.push_back(info);
519            VLOG("Gauge gauge metric %lld, dump key value: %s", (long long)mMetricId,
520                 slice.first.toString().c_str());
521        }
522    } else {
523        mSkippedBuckets.emplace_back(info.mBucketStartNs, info.mBucketEndNs);
524    }
525
526    // If we have anomaly trackers, we need to update the partial bucket values.
527    if (mAnomalyTrackers.size() > 0) {
528        updateCurrentSlicedBucketForAnomaly();
529
530        if (eventTimeNs > fullBucketEndTimeNs) {
531            // This is known to be a full bucket, so send this data to the anomaly tracker.
532            for (auto& tracker : mAnomalyTrackers) {
533                tracker->addPastBucket(mCurrentSlicedBucketForAnomaly, mCurrentBucketNum);
534            }
535            mCurrentSlicedBucketForAnomaly = std::make_shared<DimToValMap>();
536        }
537    }
538
539    mCurrentSlicedBucket = std::make_shared<DimToGaugeAtomsMap>();
540}
541
542size_t GaugeMetricProducer::byteSizeLocked() const {
543    size_t totalSize = 0;
544    for (const auto& pair : mPastBuckets) {
545        totalSize += pair.second.size() * kBucketSize;
546    }
547    return totalSize;
548}
549
550}  // namespace statsd
551}  // namespace os
552}  // namespace android
553