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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "anomaly/AnomalyMonitor.h"
#include "anomaly/AnomalyTracker.h"
#include "condition/ConditionTracker.h"
#include "config/ConfigKey.h"
#include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
#include "logd/LogEvent.h"
#include "matchers/LogMatchingTracker.h"
#include "metrics/MetricProducer.h"
#include "packages/UidMap.h"
#include <unordered_map>
namespace android {
namespace os {
namespace statsd {
// A MetricsManager is responsible for managing metrics from one single config source.
class MetricsManager : public PackageInfoListener {
public:
MetricsManager(const ConfigKey& configKey, const StatsdConfig& config, const long timeBaseSec,
sp<UidMap> uidMap);
virtual ~MetricsManager();
// Return whether the configuration is valid.
bool isConfigValid() const;
void onLogEvent(const LogEvent& event);
void onAnomalyAlarmFired(
const uint64_t timestampNs,
unordered_set<sp<const AnomalyAlarm>, SpHash<AnomalyAlarm>>& anomalySet);
void setAnomalyMonitor(const sp<AnomalyMonitor>& anomalyMonitor);
void notifyAppUpgrade(const uint64_t& eventTimeNs, const string& apk, const int uid,
const int64_t version) override;
void notifyAppRemoved(const uint64_t& eventTimeNs, const string& apk, const int uid) override;
void onUidMapReceived(const uint64_t& eventTimeNs) override;
bool shouldAddUidMapListener() const {
return !mAllowedPkg.empty();
}
void dumpStates(FILE* out, bool verbose);
// Returns the elapsed realtime when this metric manager last reported metrics.
uint64_t getLastReportTimeNs() {
return mLastReportTimeNs;
};
// Config source owner can call onDumpReport() to get all the metrics collected.
virtual void onDumpReport(const uint64_t dumpTimeNs,
android::util::ProtoOutputStream* protoOutput);
// Computes the total byte size of all metrics managed by a single config source.
// Does not change the state.
virtual size_t byteSize();
private:
const ConfigKey mConfigKey;
sp<UidMap> mUidMap;
bool mConfigValid = false;
uint64_t mLastReportTimeNs;
// The uid log sources from StatsdConfig.
std::vector<int32_t> mAllowedUid;
// The pkg log sources from StatsdConfig.
std::vector<std::string> mAllowedPkg;
// The combined uid sources (after translating pkg name to uid).
// Logs from uids that are not in the list will be ignored to avoid spamming.
std::set<int32_t> mAllowedLogSources;
// To guard access to mAllowedLogSources
mutable std::mutex mAllowedLogSourcesMutex;
// All event tags that are interesting to my metrics.
std::set<int> mTagIds;
// We only store the sp of LogMatchingTracker, MetricProducer, and ConditionTracker in
// MetricsManager. There are relationships between them, and the relationships are denoted by
// index instead of pointers. The reasons for this are: (1) the relationship between them are
// complicated, so storing index instead of pointers reduces the risk that A holds B's sp, and B
// holds A's sp. (2) When we evaluate matcher results, or condition results, we can quickly get
// the related results from a cache using the index.
// Hold all the atom matchers from the config.
std::vector<sp<LogMatchingTracker>> mAllAtomMatchers;
// Hold all the conditions from the config.
std::vector<sp<ConditionTracker>> mAllConditionTrackers;
// Hold all metrics from the config.
std::vector<sp<MetricProducer>> mAllMetricProducers;
// Hold all alert trackers.
std::vector<sp<AnomalyTracker>> mAllAnomalyTrackers;
// To make the log processing more efficient, we want to do as much filtering as possible
// before we go into individual trackers and conditions to match.
// 1st filter: check if the event tag id is in mTagIds.
// 2nd filter: if it is, we parse the event because there is at least one member is interested.
// then pass to all LogMatchingTrackers (itself also filter events by ids).
// 3nd filter: for LogMatchingTrackers that matched this event, we pass this event to the
// ConditionTrackers and MetricProducers that use this matcher.
// 4th filter: for ConditionTrackers that changed value due to this event, we pass
// new conditions to metrics that use this condition.
// The following map is initialized from the statsd_config.
// maps from the index of the LogMatchingTracker to index of MetricProducer.
std::unordered_map<int, std::vector<int>> mTrackerToMetricMap;
// maps from LogMatchingTracker to ConditionTracker
std::unordered_map<int, std::vector<int>> mTrackerToConditionMap;
// maps from ConditionTracker to MetricProducer
std::unordered_map<int, std::vector<int>> mConditionToMetricMap;
void initLogSourceWhiteList();
// The metrics that don't need to be uploaded or even reported.
std::set<int64_t> mNoReportMetricIds;
FRIEND_TEST(WakelockDurationE2eTest, TestAggregatedPredicateDimensions);
FRIEND_TEST(MetricConditionLinkE2eTest, TestMultiplePredicatesAndLinks);
FRIEND_TEST(AttributionE2eTest, TestAttributionMatchAndSlice);
FRIEND_TEST(GaugeMetricE2eTest, TestMultipleFieldsForPushedEvent);
FRIEND_TEST(DimensionInConditionE2eTest, TestCountMetricNoLink);
FRIEND_TEST(DimensionInConditionE2eTest, TestCountMetricWithLink);
FRIEND_TEST(DimensionInConditionE2eTest, TestDurationMetricNoLink);
FRIEND_TEST(DimensionInConditionE2eTest, TestDurationMetricWithLink);
};
} // namespace statsd
} // namespace os
} // namespace android
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