130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
/*
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* WatchAndWait.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 2013-2026 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 "fdbclient/NativeAPI.actor.h"
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#include "fdbserver/core/TesterInterface.h"
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#include "BulkSetup.h"
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#include "fdbclient/ReadYourWrites.h"
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#include "fdbserver/tester/workloads.h"
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struct WatchAndWaitWorkload : TestWorkload {
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static constexpr auto NAME = "WatchAndWait";
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uint64_t nodeCount, watchCount;
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int64_t nodePrefix;
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int keyBytes;
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double testDuration;
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bool triggerWatches;
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std::vector<Future<Void>> clients;
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PerfIntCounter triggers, retries;
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explicit WatchAndWaitWorkload(WorkloadContext const& wcx)
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: TestWorkload(wcx), triggers("Triggers"), retries("Retries") {
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testDuration = getOption(options, "testDuration"_sr, 600.0);
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watchCount = getOption(options, "watchCount"_sr, (uint64_t)10000);
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nodeCount = getOption(options, "nodeCount"_sr, (uint64_t)100000);
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nodePrefix = getOption(options, "nodePrefix"_sr, (int64_t)-1);
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keyBytes = std::max(getOption(options, "keyBytes"_sr, 16), 4);
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triggerWatches = getOption(options, "triggerWatches"_sr, false);
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if (watchCount > nodeCount) {
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watchCount = nodeCount;
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}
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if (nodePrefix > 0) {
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keyBytes += 16;
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}
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if (!triggerWatches) {
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keyBytes++; // watches are on different keys than the ones being modified by the workload
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}
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}
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Future<Void> setup(Database const& cx) override { return Void(); }
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Key keyForIndex(uint64_t index) const {
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Key result = makeString(keyBytes);
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uint8_t* data = mutateString(result);
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memset(data, '.', keyBytes);
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int idx = 0;
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if (nodePrefix > 0) {
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emplaceIndex(data, 0, nodePrefix);
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idx += 16;
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}
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double d = double(index) / nodeCount;
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emplaceIndex(data, idx, *(int64_t*)&d);
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return result;
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}
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Future<bool> check(Database const& cx) override { return true; }
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void getMetrics(std::vector<PerfMetric>& m) override {
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double duration = testDuration;
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m.emplace_back("Triggers/sec", triggers.getValue() / duration, Averaged::False);
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m.push_back(triggers.getMetric());
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m.push_back(retries.getMetric());
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}
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Future<Void> start(Database const& cx) override {
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std::vector<Future<Void>> watches;
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uint64_t endNode = (nodeCount * (clientId + 1)) / clientCount;
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uint64_t startNode = (nodeCount * clientId) / clientCount;
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uint64_t NodesPerWatch = nodeCount / watchCount;
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TraceEvent("WatchAndWaitExpect")
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.detail("Duration", testDuration)
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.detail("ExpectedCount", (endNode - startNode) / NodesPerWatch)
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.detail("End", endNode)
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.detail("Start", startNode)
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.detail("Npw", NodesPerWatch);
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for (uint64_t i = startNode; i < endNode; i += NodesPerWatch) {
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watches.push_back(watchAndWait(cx, this, i));
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}
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co_await delay(testDuration); // || waitForAll( watches )
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TraceEvent("WatchAndWaitEnd").detail("Duration", testDuration);
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}
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Future<Void> watchAndWait(Database cx, WatchAndWaitWorkload* self, int index) {
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try {
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ReadYourWritesTransaction tr(cx);
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while (true) {
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cx->maxOutstandingWatches = 1e6;
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Error err;
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try {
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Future<Void> watch = tr.watch(self->keyForIndex(index));
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co_await tr.commit();
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co_await watch;
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++self->triggers;
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} catch (Error& e) {
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err = e;
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}
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++self->retries;
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co_await tr.onError(err);
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}
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} catch (Error& e) {
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TraceEvent(SevError, "WatchAndWaitError").error(e);
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throw e;
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}
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}
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};
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WorkloadFactory<WatchAndWaitWorkload> WatchAndWaitWorkloadFactory;
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