Yao Chen | 44cf27c | 2017-09-14 22:32:50 -0700 | [diff] [blame^] | 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 LOG_TAG "CountMetric" |
| 18 | #define DEBUG true // STOPSHIP if true |
| 19 | #define VLOG(...) \ |
| 20 | if (DEBUG) ALOGD(__VA_ARGS__); |
| 21 | |
| 22 | #include "CountMetricProducer.h" |
| 23 | #include "parse_util.h" |
| 24 | |
| 25 | #include <cutils/log.h> |
| 26 | #include <limits.h> |
| 27 | #include <stdlib.h> |
| 28 | |
| 29 | using std::unordered_map; |
| 30 | |
| 31 | namespace android { |
| 32 | namespace os { |
| 33 | namespace statsd { |
| 34 | |
| 35 | CountMetricProducer::CountMetricProducer(const CountMetric& metric, |
| 36 | const sp<ConditionTracker> condition) |
| 37 | : mMetric(metric), |
| 38 | mConditionTracker(condition), |
| 39 | mStartTime(std::time(nullptr)), |
| 40 | mCounter(0), |
| 41 | mCurrentBucketStartTime(mStartTime) { |
| 42 | // TODO: evaluate initial conditions. and set mConditionMet. |
| 43 | if (metric.has_bucket() && metric.bucket().has_bucket_size_millis()) { |
| 44 | mBucketSize_sec = metric.bucket().bucket_size_millis() / 1000; |
| 45 | } else { |
| 46 | mBucketSize_sec = LONG_MAX; |
| 47 | } |
| 48 | |
| 49 | VLOG("created. bucket size %lu start_time: %lu", mBucketSize_sec, mStartTime); |
| 50 | } |
| 51 | |
| 52 | CountMetricProducer::CountMetricProducer(const CountMetric& metric) |
| 53 | : CountMetricProducer(metric, new ConditionTracker()) { |
| 54 | } |
| 55 | |
| 56 | CountMetricProducer::~CountMetricProducer() { |
| 57 | VLOG("~CountMetricProducer() called"); |
| 58 | } |
| 59 | |
| 60 | void CountMetricProducer::finish() { |
| 61 | // TODO: write the StatsLogReport to dropbox using |
| 62 | // DropboxWriter. |
| 63 | onDumpReport(); |
| 64 | } |
| 65 | |
| 66 | void CountMetricProducer::onDumpReport() { |
| 67 | VLOG("dump report now..."); |
| 68 | } |
| 69 | |
| 70 | void CountMetricProducer::onMatchedLogEvent(const LogEventWrapper& event) { |
| 71 | time_t eventTime = event.timestamp_ns / 1000000000; |
| 72 | |
| 73 | // this is old event, maybe statsd restarted? |
| 74 | if (eventTime < mStartTime) { |
| 75 | return; |
| 76 | } |
| 77 | |
| 78 | if (mConditionTracker->isConditionMet()) { |
| 79 | flushCounterIfNeeded(eventTime); |
| 80 | mCounter++; |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | // When a new matched event comes in, we check if it falls into the current bucket. And flush the |
| 85 | // counter to the StatsLogReport and adjust the bucket if needed. |
| 86 | void CountMetricProducer::flushCounterIfNeeded(const time_t& eventTime) { |
| 87 | if (mCurrentBucketStartTime + mBucketSize_sec > eventTime) { |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | // TODO: add a KeyValuePair to StatsLogReport. |
| 92 | ALOGD("CountMetric: dump counter %d", mCounter); |
| 93 | |
| 94 | // reset counter |
| 95 | mCounter = 0; |
| 96 | |
| 97 | // adjust the bucket start time |
| 98 | mCurrentBucketStartTime = |
| 99 | mCurrentBucketStartTime + |
| 100 | ((eventTime - mCurrentBucketStartTime) / mBucketSize_sec) * mBucketSize_sec; |
| 101 | |
| 102 | VLOG("new bucket start time: %lu", mCurrentBucketStartTime); |
| 103 | } |
| 104 | |
| 105 | } // namespace statsd |
| 106 | } // namespace os |
| 107 | } // namespace android |