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foundationdb/fdbserver/workloads/SnapTest.actor.cpp

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#include <boost/lexical_cast.hpp>
#include "fdbclient/ManagementAPI.actor.h"
#include "fdbclient/NativeAPI.actor.h"
#include "fdbclient/ReadYourWrites.h"
#include "fdbclient/SystemData.h"
#include "fdbrpc/ContinuousSample.h"
#include "fdbclient/SimpleIni.h"
#include "fdbserver/Status.h"
#include "fdbserver/TesterInterface.actor.h"
#include "fdbserver/WorkerInterface.actor.h"
#include "fdbserver/workloads/BulkSetup.actor.h"
#include "fdbserver/workloads/workloads.actor.h"
#include "flow/actorcompiler.h"
void getVersionAndnumTags(TraceEventFields md, Version& version, int& numTags) {
version = -1;
numTags = -1;
version = boost::lexical_cast<int64_t>(md.getValue("Version"));
numTags = boost::lexical_cast<int>(md.getValue("NumTags"));
}
void getTagAndDurableVersion(TraceEventFields md, Version version, Tag& tag, Version& durableVersion) {
durableVersion = -1;
// verify version:
boost::lexical_cast<int64_t>(md.getValue("Version"));
std::string tagString = md.getValue("Tag");
int colon = tagString.find_first_of(':');
std::string localityString = tagString.substr(0, colon);
std::string idString = tagString.substr(colon + 1);
tag.locality = boost::lexical_cast<int>(localityString);
tag.id = boost::lexical_cast<int>(idString);
durableVersion = boost::lexical_cast<int64_t>(md.getValue("DurableVersion"));
}
void getMinAndMaxTLogVersions(TraceEventFields md,
Version version,
Tag tag,
Version& minTLogVersion,
Version& maxTLogVersion) {
Tag verifyTag;
minTLogVersion = maxTLogVersion = -1;
// verify version:
boost::lexical_cast<int64_t>(md.getValue("Version"));
std::string tagString = md.getValue("Tag");
int colon = tagString.find_first_of(':');
std::string localityString = tagString.substr(0, colon);
std::string idString = tagString.substr(colon + 1);
verifyTag.locality = boost::lexical_cast<int>(localityString);
verifyTag.id = boost::lexical_cast<int>(idString);
if (tag != verifyTag) {
return;
}
minTLogVersion = boost::lexical_cast<int64_t>(md.getValue("PoppedTagVersion"));
maxTLogVersion = boost::lexical_cast<int64_t>(md.getValue("QueueCommittedVersion"));
}
void filterEmptyMessages(std::vector<Future<TraceEventFields>>& messages) {
messages.erase(std::remove_if(messages.begin(),
messages.end(),
[](Future<TraceEventFields> const& msgFuture) {
return !msgFuture.isReady() || msgFuture.get().size() == 0;
}),
messages.end());
return;
}
void printMessages(std::vector<Future<TraceEventFields>>& messages) {
for (int i = 0; i < messages.size(); i++) {
TraceEvent("SnapTestMessages").detail("I", i).detail("Value", messages[i].get().toString());
}
return;
}
struct SnapTestWorkload : TestWorkload {
public: // variables
int numSnaps; // num of snapshots to be taken
// FIXME: currently validation works on numSnap = 1
double maxSnapDelay; // max delay before which a snapshot will be taken
int testID; // test id
UID snapUID; // UID used for snap name
std::string restartInfoLocation; // file location to store the snap restore info
int maxRetryCntToRetrieveMessage; // number of retires to do trackLatest
bool skipCheck; // disable check if the exec fails
int retryLimit; // -1 if no limit
public: // ctor & dtor
SnapTestWorkload(WorkloadContext const& wcx)
: TestWorkload(wcx), numSnaps(0), maxSnapDelay(0.0), testID(0), snapUID() {
TraceEvent("SnapTestWorkloadConstructor").log();
std::string workloadName = "SnapTest";
maxRetryCntToRetrieveMessage = 10;
numSnaps = getOption(options, LiteralStringRef("numSnaps"), 0);
maxSnapDelay = getOption(options, LiteralStringRef("maxSnapDelay"), 25.0);
testID = getOption(options, LiteralStringRef("testID"), 0);
restartInfoLocation =
getOption(options, LiteralStringRef("restartInfoLocation"), LiteralStringRef("simfdb/restartInfo.ini"))
.toString();
skipCheck = false;
retryLimit = getOption(options, LiteralStringRef("retryLimit"), 5);
}
public: // workload functions
std::string description() const override { return "SnapTest"; }
Future<Void> setup(Database const& cx) override {
TraceEvent("SnapTestWorkloadSetup").log();
return Void();
}
Future<Void> start(Database const& cx) override {
TraceEvent("SnapTestWorkloadStart").log();
if (clientId == 0) {
return _start(cx, this);
}
return Void();
}
ACTOR Future<bool> _check(Database cx, SnapTestWorkload* self) {
if (self->skipCheck) {
TraceEvent(SevWarnAlways, "SnapCheckIgnored").log();
return true;
}
state Transaction tr(cx);
// read the key SnapFailedTLog.$UID
loop {
try {
Standalone<StringRef> keyStr =
LiteralStringRef("\xff/SnapTestFailStatus/").withSuffix(StringRef(self->snapUID.toString()));
TraceEvent("TestKeyStr").detail("Value", keyStr);
tr.setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
Optional<Value> val = wait(tr.get(keyStr));
if (val.present()) {
break;
}
// wait for the key to be written out by TLogs
wait(delay(0.1));
} catch (Error& e) {
wait(tr.onError(e));
}
}
return true;
}
Future<bool> check(Database const& cx) override {
TraceEvent("SnapTestWorkloadCheck").detail("ClientID", clientId);
if (clientId != 0) {
return true;
}
if (this->testID != 5 && this->testID != 6) {
return true;
}
return _check(cx, this);
}
void getMetrics(std::vector<PerfMetric>& m) override { TraceEvent("SnapTestWorkloadGetMetrics"); }
ACTOR Future<Void> _create_keys(Database cx, std::string prefix, bool even = true) {
state Transaction tr(cx);
state std::vector<int64_t> keys;
keys.reserve(1000);
for (int i = 0; i < 1000; i++) {
keys.push_back(deterministicRandom()->randomInt64(0, INT64_MAX - 2));
}
tr.reset();
loop {
try {
for (auto id : keys) {
if (even) {
if (id % 2 != 0) {
id++;
}
} else {
if (id % 2 == 0) {
id++;
}
}
std::string Key1 = prefix + std::to_string(id);
Key key1Ref(Key1);
std::string Val1 = std::to_string(id);
Value val1Ref(Val1);
tr.set(key1Ref, val1Ref, AddConflictRange::False);
}
wait(tr.commit());
break;
} catch (Error& e) {
wait(tr.onError(e));
}
}
return Void();
}
ACTOR Future<Void> _start(Database cx, SnapTestWorkload* self) {
state Transaction tr(cx);
state bool snapFailed = false;
if (self->testID == 0) {
// create even keys before the snapshot
wait(self->_create_keys(cx, "snapKey"));
} else if (self->testID == 1) {
// create a snapshot
state double toDelay = fmod(deterministicRandom()->randomUInt32(), self->maxSnapDelay);
TraceEvent("ToDelay").detail("Value", toDelay);
ASSERT(toDelay < self->maxSnapDelay);
wait(delay(toDelay));
state int retry = 0;
loop {
self->snapUID = deterministicRandom()->randomUniqueID();
try {
StringRef snapCmdRef = LiteralStringRef("/bin/snap_create.sh");
Future<Void> status = snapCreate(cx, snapCmdRef, self->snapUID);
wait(status);
break;
} catch (Error& e) {
if (e.code() == error_code_snap_log_anti_quorum_unsupported) {
snapFailed = true;
break;
}
TraceEvent("SnapCreateError").error(e);
++retry;
// snap v2 can fail for many reasons, so retry for 5 times and then fail it
if (self->retryLimit != -1 && retry > self->retryLimit) {
snapFailed = true;
break;
}
wait(delay(5.0));
}
}
CSimpleIni ini;
ini.SetUnicode();
ini.LoadFile(self->restartInfoLocation.c_str());
std::string uidStr = self->snapUID.toString();
ini.SetValue("RESTORE", "RestoreSnapUID", uidStr.c_str());
ini.SetValue("RESTORE", "BackupFailed", format("%d", snapFailed).c_str());
ini.SaveFile(self->restartInfoLocation.c_str());
// write the snapUID to a file
TraceEvent("SnapshotCreateStatus").detail("Status", !snapFailed ? "Success" : "Failure");
} else if (self->testID == 2) {
// create odd keys after the snapshot
wait(self->_create_keys(cx, "snapKey", false /*even*/));
} else if (self->testID == 3) {
CSimpleIni ini;
ini.SetUnicode();
ini.LoadFile(self->restartInfoLocation.c_str());
bool backupFailed = atoi(ini.GetValue("RESTORE", "BackupFailed"));
if (backupFailed) {
// since backup failed, skip the restore checking
TraceEvent(SevWarnAlways, "BackupFailedSkippingRestoreCheck").log();
return Void();
}
state KeySelector begin = firstGreaterOrEqual(normalKeys.begin);
state KeySelector end = firstGreaterOrEqual(normalKeys.end);
state int cnt = 0;
// read the entire normalKeys range and look at keys prefixed
// with snapKeys 1) validate that all key ids are even ie -
// created before snap 2) values are same as the key id 3) # of
// keys adds up to the total keys created before snap
tr.reset();
loop {
try {
RangeResult kvRange = wait(tr.getRange(begin, end, 1000));
if (!kvRange.more && kvRange.size() == 0) {
TraceEvent("SnapTestNoMoreEntries").log();
break;
}
for (int i = 0; i < kvRange.size(); i++) {
if (kvRange[i].key.startsWith(LiteralStringRef("snapKey"))) {
std::string tmp1 = kvRange[i].key.substr(7).toString();
int64_t id = strtol(tmp1.c_str(), nullptr, 0);
if (id % 2 != 0) {
throw operation_failed();
}
++cnt;
std::string tmp2 = kvRange[i].value.toString();
int64_t value = strtol(tmp2.c_str(), nullptr, 0);
if (id != value) {
throw operation_failed();
}
}
}
begin = firstGreaterThan(kvRange.end()[-1].key);
} catch (Error& e) {
wait(tr.onError(e));
}
}
if (cnt != 1000) {
TraceEvent(SevError, "SnapTestVerifyCntValue").detail("Value", cnt);
throw operation_failed();
}
} else if (self->testID == 4) {
// create a snapshot with a non whitelisted binary path and operation
// should fail
state bool testedFailure = false;
snapFailed = false;
loop {
self->snapUID = deterministicRandom()->randomUniqueID();
try {
StringRef snapCmdRef = LiteralStringRef("/bin/snap_create1.sh");
Future<Void> status = snapCreate(cx, snapCmdRef, self->snapUID);
wait(status);
break;
} catch (Error& e) {
if (e.code() == error_code_snap_not_fully_recovered_unsupported ||
e.code() == error_code_snap_log_anti_quorum_unsupported) {
snapFailed = true;
break;
}
if (e.code() == error_code_snap_path_not_whitelisted) {
testedFailure = true;
break;
}
}
}
ASSERT(testedFailure || snapFailed);
}
wait(delay(0.0));
return Void();
}
};
WorkloadFactory<SnapTestWorkload> SnapTestWorkloadFactory("SnapTest");
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