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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 #pragma once
18 
19 #include <gtest/gtest_prod.h>
20 #include "config/ConfigListener.h"
21 #include "logd/LogEvent.h"
22 #include "metrics/MetricsManager.h"
23 #include "packages/UidMap.h"
24 #include "external/StatsPullerManager.h"
25 
26 #include "src/statsd_config.pb.h"
27 #include "src/statsd_metadata.pb.h"
28 
29 #include <stdio.h>
30 #include <unordered_map>
31 
32 namespace android {
33 namespace os {
34 namespace statsd {
35 
36 
37 class StatsLogProcessor : public ConfigListener, public virtual PackageInfoListener {
38 public:
39     StatsLogProcessor(const sp<UidMap>& uidMap, const sp<StatsPullerManager>& pullerManager,
40                       const sp<AlarmMonitor>& anomalyAlarmMonitor,
41                       const sp<AlarmMonitor>& subscriberTriggerAlarmMonitor,
42                       const int64_t timeBaseNs,
43                       const std::function<bool(const ConfigKey&)>& sendBroadcast,
44                       const std::function<bool(const int&,
45                                                const vector<int64_t>&)>& sendActivationBroadcast);
46     virtual ~StatsLogProcessor();
47 
48     void OnLogEvent(LogEvent* event);
49 
50     void OnConfigUpdated(const int64_t timestampNs, const ConfigKey& key,
51                          const StatsdConfig& config, bool modularUpdate = true);
52     void OnConfigRemoved(const ConfigKey& key);
53 
54     size_t GetMetricsSize(const ConfigKey& key) const;
55 
56     void GetActiveConfigs(const int uid, vector<int64_t>& outActiveConfigs);
57 
58     void onDumpReport(const ConfigKey& key, const int64_t dumpTimeNs,
59                       const bool include_current_partial_bucket, const bool erase_data,
60                       const DumpReportReason dumpReportReason,
61                       const DumpLatency dumpLatency,
62                       vector<uint8_t>* outData);
63     void onDumpReport(const ConfigKey& key, const int64_t dumpTimeNs,
64                       const bool include_current_partial_bucket, const bool erase_data,
65                       const DumpReportReason dumpReportReason,
66                       const DumpLatency dumpLatency,
67                       ProtoOutputStream* proto);
68 
69     /* Tells MetricsManager that the alarms in alarmSet have fired. Modifies periodic alarmSet. */
70     void onPeriodicAlarmFired(
71             const int64_t& timestampNs,
72             unordered_set<sp<const InternalAlarm>, SpHash<InternalAlarm>> alarmSet);
73 
74     /* Flushes data to disk. Data on memory will be gone after written to disk. */
75     void WriteDataToDisk(const DumpReportReason dumpReportReason, const DumpLatency dumpLatency,
76                          const int64_t elapsedRealtimeNs);
77 
78     /* Persist configs containing metrics with active activations to disk. */
79     void SaveActiveConfigsToDisk(int64_t currentTimeNs);
80 
81     /* Writes the current active status/ttl for all configs and metrics to ProtoOutputStream. */
82     void WriteActiveConfigsToProtoOutputStream(
83             int64_t currentTimeNs, const DumpReportReason reason, ProtoOutputStream* proto);
84 
85     /* Load configs containing metrics with active activations from disk. */
86     void LoadActiveConfigsFromDisk();
87 
88     /* Persist metadata for configs and metrics to disk. */
89     void SaveMetadataToDisk(int64_t currentWallClockTimeNs, int64_t systemElapsedTimeNs);
90 
91     /* Writes the statsd metadata for all configs and metrics to StatsMetadataList. */
92     void WriteMetadataToProto(int64_t currentWallClockTimeNs,
93                               int64_t systemElapsedTimeNs,
94                               metadata::StatsMetadataList* metadataList);
95 
96     /* Load stats metadata for configs and metrics from disk. */
97     void LoadMetadataFromDisk(int64_t currentWallClockTimeNs,
98                               int64_t systemElapsedTimeNs);
99 
100     /* Sets the metadata for all configs and metrics */
101     void SetMetadataState(const metadata::StatsMetadataList& statsMetadataList,
102                           int64_t currentWallClockTimeNs,
103                           int64_t systemElapsedTimeNs);
104 
105     /* Sets the active status/ttl for all configs and metrics to the status in ActiveConfigList. */
106     void SetConfigsActiveState(const ActiveConfigList& activeConfigList, int64_t currentTimeNs);
107 
108     /* Notify all MetricsManagers of app upgrades */
109     void notifyAppUpgrade(const int64_t& eventTimeNs, const string& apk, const int uid,
110                           const int64_t version) override;
111 
112     /* Notify all MetricsManagers of app removals */
113     void notifyAppRemoved(const int64_t& eventTimeNs, const string& apk, const int uid) override;
114 
115     /* Notify all MetricsManagers of uid map snapshots received */
116     void onUidMapReceived(const int64_t& eventTimeNs) override;
117 
118     /* Notify all metrics managers of boot completed
119      * This will force a bucket split when the boot is finished.
120      */
121     void onStatsdInitCompleted(const int64_t& elapsedTimeNs);
122 
123     // Reset all configs.
124     void resetConfigs();
125 
getUidMap()126     inline sp<UidMap> getUidMap() {
127         return mUidMap;
128     }
129 
130     void dumpStates(int outFd, bool verbose);
131 
132     void informPullAlarmFired(const int64_t timestampNs);
133 
134     int64_t getLastReportTimeNs(const ConfigKey& key);
135 
setPrintLogs(bool enabled)136     inline void setPrintLogs(bool enabled) {
137         std::lock_guard<std::mutex> lock(mMetricsMutex);
138         mPrintAllLogs = enabled;
139     }
140 
141     // Add a specific config key to the possible configs to dump ASAP.
142     void noteOnDiskData(const ConfigKey& key);
143 
144     void setAnomalyAlarm(const int64_t timeMillis);
145 
146     void cancelAnomalyAlarm();
147 
148 private:
149     // For testing only.
getAnomalyAlarmMonitor()150     inline sp<AlarmMonitor> getAnomalyAlarmMonitor() const {
151         return mAnomalyAlarmMonitor;
152     }
153 
getPeriodicAlarmMonitor()154     inline sp<AlarmMonitor> getPeriodicAlarmMonitor() const {
155         return mPeriodicAlarmMonitor;
156     }
157 
158     mutable mutex mMetricsMutex;
159 
160     // Guards mNextAnomalyAlarmTime. A separate mutex is needed because alarms are set/cancelled
161     // in the onLogEvent code path, which is locked by mMetricsMutex.
162     // DO NOT acquire mMetricsMutex while holding mAnomalyAlarmMutex. This can lead to a deadlock.
163     mutable mutex mAnomalyAlarmMutex;
164 
165     std::unordered_map<ConfigKey, sp<MetricsManager>> mMetricsManagers;
166 
167     std::unordered_map<ConfigKey, int64_t> mLastBroadcastTimes;
168 
169     // Last time we sent a broadcast to this uid that the active configs had changed.
170     std::unordered_map<int, int64_t> mLastActivationBroadcastTimes;
171 
172     // Tracks when we last checked the bytes consumed for each config key.
173     std::unordered_map<ConfigKey, int64_t> mLastByteSizeTimes;
174 
175     // Tracks which config keys has metric reports on disk
176     std::set<ConfigKey> mOnDiskDataConfigs;
177 
178     sp<UidMap> mUidMap;  // Reference to the UidMap to lookup app name and version for each uid.
179 
180     sp<StatsPullerManager> mPullerManager;  // Reference to StatsPullerManager
181 
182     sp<AlarmMonitor> mAnomalyAlarmMonitor;
183 
184     sp<AlarmMonitor> mPeriodicAlarmMonitor;
185 
186     void OnLogEvent(LogEvent* event, int64_t elapsedRealtimeNs);
187 
188     void resetIfConfigTtlExpiredLocked(const int64_t eventTimeNs);
189 
190     void OnConfigUpdatedLocked(const int64_t currentTimestampNs, const ConfigKey& key,
191                                const StatsdConfig& config, bool modularUpdate);
192 
193     void GetActiveConfigsLocked(const int uid, vector<int64_t>& outActiveConfigs);
194 
195     void WriteActiveConfigsToProtoOutputStreamLocked(
196             int64_t currentTimeNs, const DumpReportReason reason, ProtoOutputStream* proto);
197 
198     void SetConfigsActiveStateLocked(const ActiveConfigList& activeConfigList,
199                                      int64_t currentTimeNs);
200 
201     void SetMetadataStateLocked(const metadata::StatsMetadataList& statsMetadataList,
202                                 int64_t currentWallClockTimeNs,
203                                 int64_t systemElapsedTimeNs);
204 
205     void WriteMetadataToProtoLocked(int64_t currentWallClockTimeNs,
206                                     int64_t systemElapsedTimeNs,
207                                     metadata::StatsMetadataList* metadataList);
208 
209     void WriteDataToDiskLocked(const DumpReportReason dumpReportReason,
210                                const DumpLatency dumpLatency, const int64_t elapsedRealtimeNs);
211 
212     void WriteDataToDiskLocked(const ConfigKey& key, const int64_t timestampNs,
213                                const DumpReportReason dumpReportReason,
214                                const DumpLatency dumpLatency);
215 
216     void onConfigMetricsReportLocked(
217             const ConfigKey& key, const int64_t dumpTimeStampNs,
218             const bool include_current_partial_bucket, const bool erase_data,
219             const DumpReportReason dumpReportReason, const DumpLatency dumpLatency,
220             /*if dataSavedToDisk is true, it indicates the caller will write the data to disk
221              (e.g., before reboot). So no need to further persist local history.*/
222             const bool dataSavedToDisk, vector<uint8_t>* proto);
223 
224     /* Check if we should send a broadcast if approaching memory limits and if we're over, we
225      * actually delete the data. */
226     void flushIfNecessaryLocked(const ConfigKey& key, MetricsManager& metricsManager);
227 
228     // Maps the isolated uid in the log event to host uid if the log event contains uid fields.
229     void mapIsolatedUidToHostUidIfNecessaryLocked(LogEvent* event) const;
230 
231     // Handler over the isolated uid change event.
232     void onIsolatedUidChangedEventLocked(const LogEvent& event);
233 
234     // Handler over the binary push state changed event.
235     void onBinaryPushStateChangedEventLocked(LogEvent* event);
236 
237     // Handler over the watchdog rollback occurred event.
238     void onWatchdogRollbackOccurredLocked(LogEvent* event);
239 
240     // Updates train info on disk based on binary push state changed info and
241     // write disk info into parameters.
242     void getAndUpdateTrainInfoOnDisk(bool is_rollback, InstallTrainInfo* trainInfoIn);
243 
244     // Gets experiment ids on disk for associated train and updates them
245     // depending on rollback type. Then writes them back to disk and returns
246     // them.
247     std::vector<int64_t> processWatchdogRollbackOccurred(const int32_t rollbackTypeIn,
248                                                           const string& packageName);
249 
250     // Reset all configs.
251     void resetConfigsLocked(const int64_t timestampNs);
252     // Reset the specified configs.
253     void resetConfigsLocked(const int64_t timestampNs, const std::vector<ConfigKey>& configs);
254 
255     // An anomaly alarm should have fired.
256     // Check with anomaly alarm manager to find the alarms and process the result.
257     void informAnomalyAlarmFiredLocked(const int64_t elapsedTimeMillis);
258 
259     /* Tells MetricsManager that the alarms in alarmSet have fired. Modifies anomaly alarmSet. */
260     void processFiredAnomalyAlarmsLocked(
261             const int64_t& timestampNs,
262             unordered_set<sp<const InternalAlarm>, SpHash<InternalAlarm>> alarmSet);
263 
264     // Function used to send a broadcast so that receiver for the config key can call getData
265     // to retrieve the stored data.
266     std::function<bool(const ConfigKey& key)> mSendBroadcast;
267 
268     // Function used to send a broadcast so that receiver can be notified of which configs
269     // are currently active.
270     std::function<bool(const int& uid, const vector<int64_t>& configIds)> mSendActivationBroadcast;
271 
272     const int64_t mTimeBaseNs;
273 
274     // Largest timestamp of the events that we have processed.
275     int64_t mLargestTimestampSeen = 0;
276 
277     int64_t mLastTimestampSeen = 0;
278 
279     int64_t mLastPullerCacheClearTimeSec = 0;
280 
281     // Last time we wrote data to disk.
282     int64_t mLastWriteTimeNs = 0;
283 
284     // Last time we wrote active metrics to disk.
285     int64_t mLastActiveMetricsWriteNs = 0;
286 
287     //Last time we wrote metadata to disk.
288     int64_t mLastMetadataWriteNs = 0;
289 
290     // The time for the next anomaly alarm for alerts.
291     int64_t mNextAnomalyAlarmTime = 0;
292 
293     bool mPrintAllLogs = false;
294 
295     FRIEND_TEST(StatsLogProcessorTest, TestOutOfOrderLogs);
296     FRIEND_TEST(StatsLogProcessorTest, TestRateLimitByteSize);
297     FRIEND_TEST(StatsLogProcessorTest, TestRateLimitBroadcast);
298     FRIEND_TEST(StatsLogProcessorTest, TestDropWhenByteSizeTooLarge);
299     FRIEND_TEST(StatsLogProcessorTest, InvalidConfigRemoved);
300     FRIEND_TEST(StatsLogProcessorTest, TestActiveConfigMetricDiskWriteRead);
301     FRIEND_TEST(StatsLogProcessorTest, TestActivationOnBoot);
302     FRIEND_TEST(StatsLogProcessorTest, TestActivationOnBootMultipleActivations);
303     FRIEND_TEST(StatsLogProcessorTest,
304             TestActivationOnBootMultipleActivationsDifferentActivationTypes);
305     FRIEND_TEST(StatsLogProcessorTest, TestActivationsPersistAcrossSystemServerRestart);
306 
307     FRIEND_TEST(WakelockDurationE2eTest, TestAggregatedPredicateDimensionsForSumDuration1);
308     FRIEND_TEST(WakelockDurationE2eTest, TestAggregatedPredicateDimensionsForSumDuration2);
309     FRIEND_TEST(WakelockDurationE2eTest, TestAggregatedPredicateDimensionsForSumDuration3);
310     FRIEND_TEST(WakelockDurationE2eTest, TestAggregatedPredicateDimensionsForMaxDuration1);
311     FRIEND_TEST(WakelockDurationE2eTest, TestAggregatedPredicateDimensionsForMaxDuration2);
312     FRIEND_TEST(WakelockDurationE2eTest, TestAggregatedPredicateDimensionsForMaxDuration3);
313     FRIEND_TEST(MetricConditionLinkE2eTest, TestMultiplePredicatesAndLinks1);
314     FRIEND_TEST(MetricConditionLinkE2eTest, TestMultiplePredicatesAndLinks2);
315     FRIEND_TEST(AttributionE2eTest, TestAttributionMatchAndSliceByFirstUid);
316     FRIEND_TEST(AttributionE2eTest, TestAttributionMatchAndSliceByChain);
317     FRIEND_TEST(GaugeMetricE2eTest, TestMultipleFieldsForPushedEvent);
318     FRIEND_TEST(GaugeMetricE2eTest, TestRandomSamplePulledEvents);
319     FRIEND_TEST(GaugeMetricE2eTest, TestRandomSamplePulledEvent_LateAlarm);
320     FRIEND_TEST(GaugeMetricE2eTest, TestRandomSamplePulledEventsWithActivation);
321     FRIEND_TEST(GaugeMetricE2eTest, TestRandomSamplePulledEventsNoCondition);
322     FRIEND_TEST(GaugeMetricE2eTest, TestConditionChangeToTrueSamplePulledEvents);
323 
324     FRIEND_TEST(AnomalyDetectionE2eTest, TestSlicedCountMetric_single_bucket);
325     FRIEND_TEST(AnomalyDetectionE2eTest, TestSlicedCountMetric_multiple_buckets);
326     FRIEND_TEST(AnomalyDetectionE2eTest, TestCountMetric_save_refractory_to_disk_no_data_written);
327     FRIEND_TEST(AnomalyDetectionE2eTest, TestCountMetric_save_refractory_to_disk);
328     FRIEND_TEST(AnomalyDetectionE2eTest, TestCountMetric_load_refractory_from_disk);
329     FRIEND_TEST(AnomalyDetectionE2eTest, TestDurationMetric_SUM_single_bucket);
330     FRIEND_TEST(AnomalyDetectionE2eTest, TestDurationMetric_SUM_partial_bucket);
331     FRIEND_TEST(AnomalyDetectionE2eTest, TestDurationMetric_SUM_multiple_buckets);
332     FRIEND_TEST(AnomalyDetectionE2eTest, TestDurationMetric_SUM_long_refractory_period);
333 
334     FRIEND_TEST(AlarmE2eTest, TestMultipleAlarms);
335     FRIEND_TEST(ConfigTtlE2eTest, TestCountMetric);
336     FRIEND_TEST(MetricActivationE2eTest, TestCountMetric);
337     FRIEND_TEST(MetricActivationE2eTest, TestCountMetricWithOneDeactivation);
338     FRIEND_TEST(MetricActivationE2eTest, TestCountMetricWithTwoDeactivations);
339     FRIEND_TEST(MetricActivationE2eTest, TestCountMetricWithSameDeactivation);
340     FRIEND_TEST(MetricActivationE2eTest, TestCountMetricWithTwoMetricsTwoDeactivations);
341 
342     FRIEND_TEST(ConfigUpdateE2eTest, TestAlarms);
343     FRIEND_TEST(ConfigUpdateE2eTest, TestGaugeMetric);
344     FRIEND_TEST(ConfigUpdateE2eTest, TestValueMetric);
345     FRIEND_TEST(ConfigUpdateE2eTest, TestAnomalyDurationMetric);
346     FRIEND_TEST(ConfigUpdateE2eAbTest, TestHashStrings);
347     FRIEND_TEST(ConfigUpdateE2eAbTest, TestUidMapVersionStringInstaller);
348     FRIEND_TEST(ConfigUpdateE2eAbTest, TestConfigTtl);
349 
350     FRIEND_TEST(CountMetricE2eTest, TestInitialConditionChanges);
351     FRIEND_TEST(CountMetricE2eTest, TestSlicedState);
352     FRIEND_TEST(CountMetricE2eTest, TestSlicedStateWithMap);
353     FRIEND_TEST(CountMetricE2eTest, TestMultipleSlicedStates);
354     FRIEND_TEST(CountMetricE2eTest, TestSlicedStateWithPrimaryFields);
355 
356     FRIEND_TEST(DurationMetricE2eTest, TestOneBucket);
357     FRIEND_TEST(DurationMetricE2eTest, TestTwoBuckets);
358     FRIEND_TEST(DurationMetricE2eTest, TestWithActivation);
359     FRIEND_TEST(DurationMetricE2eTest, TestWithCondition);
360     FRIEND_TEST(DurationMetricE2eTest, TestWithSlicedCondition);
361     FRIEND_TEST(DurationMetricE2eTest, TestWithActivationAndSlicedCondition);
362     FRIEND_TEST(DurationMetricE2eTest, TestWithSlicedState);
363     FRIEND_TEST(DurationMetricE2eTest, TestWithConditionAndSlicedState);
364     FRIEND_TEST(DurationMetricE2eTest, TestWithSlicedStateMapped);
365     FRIEND_TEST(DurationMetricE2eTest, TestSlicedStatePrimaryFieldsNotSubsetDimInWhat);
366     FRIEND_TEST(DurationMetricE2eTest, TestWithSlicedStatePrimaryFieldsSubset);
367     FRIEND_TEST(DurationMetricE2eTest, TestUploadThreshold);
368 
369     FRIEND_TEST(ValueMetricE2eTest, TestInitialConditionChanges);
370     FRIEND_TEST(ValueMetricE2eTest, TestPulledEvents);
371     FRIEND_TEST(ValueMetricE2eTest, TestPulledEvents_LateAlarm);
372     FRIEND_TEST(ValueMetricE2eTest, TestPulledEvents_WithActivation);
373     FRIEND_TEST(ValueMetricE2eTest, TestInitWithSlicedState);
374     FRIEND_TEST(ValueMetricE2eTest, TestInitWithSlicedState_WithDimensions);
375     FRIEND_TEST(ValueMetricE2eTest, TestInitWithSlicedState_WithIncorrectDimensions);
376 };
377 
378 }  // namespace statsd
379 }  // namespace os
380 }  // namespace android
381