82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
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/*
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* AsyncFileBlobStore.actor.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "AsyncFileBlobStore.actor.h"
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#include "AsyncFileReadAhead.actor.h"
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#include "flow/UnitTest.h"
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Future<int64_t> AsyncFileBlobStoreRead::size() {
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if(!m_size.isValid())
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m_size = m_bstore->objectSize(m_bucket, m_object);
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return m_size;
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}
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Future<int> AsyncFileBlobStoreRead::read( void *data, int length, int64_t offset ) {
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return m_bstore->readObject(m_bucket, m_object, data, length, offset);
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}
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ACTOR Future<Void> sendStuff(int id, Reference<IRateControl> t, int bytes) {
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printf("Starting fake sender %d which will send send %d bytes.\n", id, bytes);
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state double ts = timer();
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state int total = 0;
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while(total < bytes) {
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state int r = std::min<int>(g_random->randomInt(0,1000), bytes - total);
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Void _ = wait(t->getAllowance(r));
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total += r;
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}
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double dur = timer() - ts;
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printf("Sender %d: Sent %d in %fs, %f/s\n", id, total, dur, total/dur);
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return Void();
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}
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TEST_CASE("backup/throttling") {
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// Test will not work in simulation.
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if(g_network->isSimulated())
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return Void();
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state int limit = 100000;
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state Reference<IRateControl> t(new SpeedLimit(limit, 1));
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state int id = 1;
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std::vector<Future<Void>> f;
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state double ts = timer();
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state int total = 0;
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int s;
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s = 500000;
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f.push_back(sendStuff(id++, t, s)); total += s;
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f.push_back(sendStuff(id++, t, s)); total += s;
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s = 50000;
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f.push_back(sendStuff(id++, t, s)); total += s;
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f.push_back(sendStuff(id++, t, s)); total += s;
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s = 5000;
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f.push_back(sendStuff(id++, t, s)); total += s;
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Void _ = wait(waitForAll(f));
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double dur = timer() - ts;
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int speed = int(total / dur);
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printf("Speed limit was %d, measured speed was %d\n", limit, speed);
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ASSERT(abs(speed - limit) / limit < .01);
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return Void();
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}
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