foundationdb/fdbserver/workloads/Sideband.actor.cpp

194 lines
6.1 KiB
C++

/*
* Sideband.actor.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
*
* 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.
*/
#include "fdbclient/NativeAPI.actor.h"
#include "fdbserver/TesterInterface.actor.h"
#include "fdbserver/workloads/workloads.actor.h"
#include "flow/actorcompiler.h" // This must be the last #include.
struct SidebandMessage {
constexpr static FileIdentifier file_identifier = 11862046;
uint64_t key;
Version commitVersion;
SidebandMessage() {}
SidebandMessage(uint64_t key, Version commitVersion) : key(key), commitVersion(commitVersion) {}
template <class Ar>
void serialize(Ar& ar) {
serializer(ar, key, commitVersion);
}
};
struct SidebandInterface {
constexpr static FileIdentifier file_identifier = 15950544;
RequestStream<SidebandMessage> updates;
UID id() const { return updates.getEndpoint().token; }
template <class Ar>
void serialize(Ar& ar) {
serializer(ar, updates);
}
};
struct SidebandWorkload : TestWorkload {
static constexpr auto NAME = "Sideband";
double testDuration, operationsPerSecond;
SidebandInterface interf;
std::vector<Future<Void>> clients;
PerfIntCounter messages, consistencyErrors, keysUnexpectedlyPresent;
SidebandWorkload(WorkloadContext const& wcx)
: TestWorkload(wcx), messages("Messages"), consistencyErrors("Causal Consistency Errors"),
keysUnexpectedlyPresent("KeysUnexpectedlyPresent") {
testDuration = getOption(options, "testDuration"_sr, 10.0);
operationsPerSecond = getOption(options, "operationsPerSecond"_sr, 50.0);
}
Future<Void> setup(Database const& cx) override { return persistInterface(this, cx->clone()); }
Future<Void> start(Database const& cx) override {
clients.push_back(mutator(this, cx->clone()));
clients.push_back(checker(this, cx->clone()));
return delay(testDuration);
}
Future<bool> check(Database const& cx) override {
int errors = 0;
for (int c = 0; c < clients.size(); c++)
errors += clients[c].isError();
if (errors)
TraceEvent(SevError, "TestFailure").detail("Reason", "There were client errors.");
clients.clear();
if (consistencyErrors.getValue())
TraceEvent(SevError, "TestFailure").detail("Reason", "There were causal consistency errors.");
return !errors && !consistencyErrors.getValue();
}
void getMetrics(std::vector<PerfMetric>& m) override {
m.push_back(messages.getMetric());
m.push_back(consistencyErrors.getMetric());
m.push_back(keysUnexpectedlyPresent.getMetric());
}
ACTOR Future<Void> persistInterface(SidebandWorkload* self, Database cx) {
state Transaction tr(cx);
BinaryWriter wr(IncludeVersion());
wr << self->interf;
state Standalone<StringRef> serializedInterface = wr.toValue();
loop {
try {
Optional<Value> val = wait(tr.get(StringRef(format("Sideband/Client/%d", self->clientId))));
if (val.present()) {
if (val.get() != serializedInterface)
throw operation_failed();
break;
}
tr.set(format("Sideband/Client/%d", self->clientId), serializedInterface);
wait(tr.commit());
break;
} catch (Error& e) {
wait(tr.onError(e));
}
}
TraceEvent("SidebandPersisted", self->interf.id()).detail("ClientIdx", self->clientId);
return Void();
}
ACTOR Future<SidebandInterface> fetchSideband(SidebandWorkload* self, Database cx) {
state Transaction tr(cx);
loop {
try {
Optional<Value> val =
wait(tr.get(StringRef(format("Sideband/Client/%d", (self->clientId + 1) % self->clientCount))));
if (!val.present()) {
throw operation_failed();
}
SidebandInterface sideband;
BinaryReader br(val.get(), IncludeVersion());
br >> sideband;
TraceEvent("SidebandFetched", sideband.id()).detail("ClientIdx", self->clientId);
return sideband;
} catch (Error& e) {
wait(tr.onError(e));
}
}
}
ACTOR Future<Void> mutator(SidebandWorkload* self, Database cx) {
state SidebandInterface checker = wait(self->fetchSideband(self, cx->clone()));
state double lastTime = now();
state Version commitVersion;
loop {
wait(poisson(&lastTime, 1.0 / self->operationsPerSecond));
state Transaction tr(cx);
state uint64_t key = deterministicRandom()->randomUniqueID().hash();
state Standalone<StringRef> messageKey(format("Sideband/Message/%llx", key));
loop {
try {
Optional<Value> val = wait(tr.get(messageKey));
if (val.present()) {
commitVersion = tr.getReadVersion().get();
++self->keysUnexpectedlyPresent;
break;
}
tr.set(messageKey, "deadbeef"_sr);
wait(tr.commit());
commitVersion = tr.getCommittedVersion();
break;
} catch (Error& e) {
wait(tr.onError(e));
}
}
++self->messages;
checker.updates.send(SidebandMessage(key, commitVersion));
}
}
ACTOR Future<Void> checker(SidebandWorkload* self, Database cx) {
loop {
state SidebandMessage message = waitNext(self->interf.updates.getFuture());
state Standalone<StringRef> messageKey(format("Sideband/Message/%llx", message.key));
state Transaction tr(cx);
loop {
try {
Optional<Value> val = wait(tr.get(messageKey));
if (!val.present()) {
TraceEvent(SevError, "CausalConsistencyError", self->interf.id())
.detail("MessageKey", messageKey.toString().c_str())
.detail("RemoteCommitVersion", message.commitVersion)
.detail("LocalReadVersion",
tr.getReadVersion().get()); // will assert that ReadVersion is set
++self->consistencyErrors;
}
break;
} catch (Error& e) {
wait(tr.onError(e));
}
}
}
}
};
WorkloadFactory<SidebandWorkload> SidebandWorkloadFactory;