1 /* 2 * Copyright (C) 2018 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 #define DEBUG false 17 #include "Log.h" 18 19 #include "Throttler.h" 20 21 #include <inttypes.h> 22 #include <utils/SystemClock.h> 23 24 namespace android { 25 namespace os { 26 namespace incidentd { 27 28 Throttler::Throttler(size_t limit, int64_t refractoryPeriodMs) 29 : mSizeLimit(limit), 30 mRefractoryPeriodMs(refractoryPeriodMs), 31 mAccumulatedSize(0), 32 mLastRefractoryMs(android::elapsedRealtime()) {} 33 34 Throttler::~Throttler() {} 35 36 sp<ReportBatch> Throttler::filterBatch(const sp<ReportBatch>& queued) { 37 sp<ReportBatch> result = new ReportBatch(); 38 39 // We will never throttle the streaming ones. 40 queued->transferStreamingRequests(result); 41 42 // If the persisted ones aren't to be throttled, then add them to the 43 // batch we're going to do. 44 if (!shouldThrottle()) { 45 queued->transferPersistedRequests(result); 46 } 47 48 return result; 49 } 50 51 bool Throttler::shouldThrottle() { 52 int64_t now = android::elapsedRealtime(); 53 if (now > mRefractoryPeriodMs + mLastRefractoryMs) { 54 mLastRefractoryMs = now; 55 mAccumulatedSize = 0; 56 } 57 return mAccumulatedSize > mSizeLimit; 58 } 59 60 void Throttler::addReportSize(size_t reportByteSize) { 61 VLOG("The current request took %zu bytes to dropbox", reportByteSize); 62 mAccumulatedSize += reportByteSize; 63 } 64 65 void Throttler::dump(FILE* out) { 66 fprintf(out, "mSizeLimit=%zu\n", mSizeLimit); 67 fprintf(out, "mAccumulatedSize=%zu\n", mAccumulatedSize); 68 fprintf(out, "mRefractoryPeriodMs=%" PRIi64 "\n", mRefractoryPeriodMs); 69 fprintf(out, "mLastRefractoryMs=%" PRIi64 "\n", mLastRefractoryMs); 70 } 71 72 } // namespace incidentd 73 } // namespace os 74 } // namespace android 75
