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Add special keys for profile client get/set

This commit is contained in:
Chaoguang Lin 2021-02-19 12:22:00 -08:00
parent ac860b3c22
commit 703107332a
4 changed files with 216 additions and 4 deletions
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5
fdbclient/NativeAPI.actor.cpp
View File

@ -955,6 +955,11 @@ DatabaseContext::DatabaseContext(Reference<AsyncVar<Reference<ClusterConnectionF
std::make_unique<AdvanceVersionImpl>(
singleKeyRange(LiteralStringRef("min_required_commit_version"))
.withPrefix(SpecialKeySpace::getModuleRange(SpecialKeySpace::MODULE::MANAGEMENT).begin)));
registerSpecialKeySpaceModule(
SpecialKeySpace::MODULE::MANAGEMENT, SpecialKeySpace::IMPLTYPE::READWRITE,
std::make_unique<ClientProfilingImpl>(
KeyRangeRef(LiteralStringRef("profiling/"), LiteralStringRef("profiling0"))
.withPrefix(SpecialKeySpace::getModuleRange(SpecialKeySpace::MODULE::MANAGEMENT).begin)));
}
if (apiVersionAtLeast(630)) {
registerSpecialKeySpaceModule(SpecialKeySpace::MODULE::TRANSACTION, SpecialKeySpace::IMPLTYPE::READONLY,

96
fdbclient/SpecialKeySpace.actor.cpp
View File

@ -21,6 +21,7 @@
#include "boost/lexical_cast.hpp"
#include "fdbclient/SpecialKeySpace.actor.h"
#include "flow/Arena.h"
#include "flow/UnitTest.h"
#include "fdbclient/ManagementAPI.actor.h"
#include "fdbclient/StatusClient.h"
@ -59,6 +60,8 @@ std::unordered_map<std::string, KeyRange> SpecialKeySpace::managementApiCommandT
{ "consistencycheck", singleKeyRange(LiteralStringRef("consistency_check_suspended"))
.withPrefix(moduleToBoundary[MODULE::MANAGEMENT].begin) },
{ "advanceversion", singleKeyRange(LiteralStringRef("min_required_commit_version"))
.withPrefix(moduleToBoundary[MODULE::MANAGEMENT].begin) },
{ "profile", KeyRangeRef(LiteralStringRef("profiling/"), LiteralStringRef("profiling0"))
.withPrefix(moduleToBoundary[MODULE::MANAGEMENT].begin) }
};
@ -1416,3 +1419,96 @@ Future<Optional<std::string>> AdvanceVersionImpl::commit(ReadYourWritesTransacti
}
return Optional<std::string>();
}
ClientProfilingImpl::ClientProfilingImpl(KeyRangeRef kr) : SpecialKeyRangeRWImpl(kr) {}
ACTOR static Future<Standalone<RangeResultRef>> ClientProfilingGetRangeActor(ReadYourWritesTransaction* ryw,
KeyRef prefix, KeyRangeRef kr) {
state Standalone<RangeResultRef> result;
// client_txn_sample_rate
state Key sampleRateKey = LiteralStringRef("client_txn_sample_rate").withPrefix(prefix);
if (kr.contains(sampleRateKey)) {
auto entry = ryw->getSpecialKeySpaceWriteMap()[sampleRateKey];
if (!ryw->readYourWritesDisabled() && entry.first) {
if (entry.second.present())
result.push_back_deep(result.arena(), KeyValueRef(sampleRateKey, entry.second.get()));
// check clear is forbidden
} else {
Optional<Value> f = wait(ryw->getTransaction().get(fdbClientInfoTxnSampleRate));
std::string sampleRateStr = "default";
if (f.present()) {
const double sampleRateDbl = BinaryReader::fromStringRef<double>(f.get(), Unversioned());
if (!std::isinf(sampleRateDbl)) {
sampleRateStr = boost::lexical_cast<std::string>(sampleRateDbl);
}
}
result.push_back_deep(result.arena(), KeyValueRef(sampleRateKey, Value(sampleRateStr)));
}
}
// client_txn_size_limit
state Key txnSizeLimitKey = LiteralStringRef("client_txn_size_limit").withPrefix(prefix);
if (kr.contains(txnSizeLimitKey)) {
auto entry = ryw->getSpecialKeySpaceWriteMap()[txnSizeLimitKey];
if (!ryw->readYourWritesDisabled() && entry.first) {
if (entry.second.present())
result.push_back_deep(result.arena(), KeyValueRef(txnSizeLimitKey, entry.second.get()));
// check clear is forbidden
} else {
Optional<Value> f = wait(ryw->getTransaction().get(fdbClientInfoTxnSizeLimit));
std::string sizeLimitStr = "default";
if (f.present()) {
const int64_t sizeLimit = BinaryReader::fromStringRef<int64_t>(f.get(), Unversioned());
if (sizeLimit != -1) {
sizeLimitStr = boost::lexical_cast<std::string>(sizeLimit);
}
}
result.push_back_deep(result.arena(), KeyValueRef(txnSizeLimitKey, Value(sizeLimitStr)));
}
}
return result;
}
Future<Standalone<RangeResultRef>> ClientProfilingImpl::getRange(ReadYourWritesTransaction* ryw, KeyRangeRef kr) const {
return ClientProfilingGetRangeActor(ryw, getKeyRange().begin, kr);
}
Future<Optional<std::string>> ClientProfilingImpl::commit(ReadYourWritesTransaction* ryw) {
// client_txn_sample_rate
Key sampleRateKey = LiteralStringRef("client_txn_sample_rate").withPrefix(getKeyRange().begin);
auto rateEntry = ryw->getSpecialKeySpaceWriteMap()[sampleRateKey];
if (rateEntry.first && rateEntry.second.present()) {
std::string sampleRateStr = rateEntry.second.get().toString();
double sampleRate;
if (sampleRateStr == "default")
sampleRate = std::numeric_limits<double>::infinity();
else {
try {
sampleRate = boost::lexical_cast<double>(sampleRateStr);
} catch (boost::bad_lexical_cast& e) {
return Optional<std::string>(ManagementAPIError::toJsonString(
false, "profile", "Invalid transaction sample rate(double): " + sampleRateStr));
}
}
ryw->getTransaction().set(fdbClientInfoTxnSampleRate, BinaryWriter::toValue(sampleRate, Unversioned()));
}
// client_txn_size_limit
Key txnSizeLimitKey = LiteralStringRef("client_txn_size_limit").withPrefix(getKeyRange().begin);
auto sizeLimitEntry = ryw->getSpecialKeySpaceWriteMap()[txnSizeLimitKey];
if (sizeLimitEntry.first && sizeLimitEntry.second.present()) {
std::string sizeLimitStr = sizeLimitEntry.second.get().toString();
int64_t sizeLimit;
if (sizeLimitStr == "default")
sizeLimit = -1;
else {
try {
sizeLimit = boost::lexical_cast<int64_t>(sizeLimitStr);
} catch (boost::bad_lexical_cast& e) {
return Optional<std::string>(ManagementAPIError::toJsonString(
false, "profile", "Invalid transaction size limit(int64_t): " + sizeLimitStr));
}
}
ryw->getTransaction().set(fdbClientInfoTxnSizeLimit, BinaryWriter::toValue(sizeLimit, Unversioned()));
}
return Optional<std::string>();
}

7
fdbclient/SpecialKeySpace.actor.h
View File

@ -339,5 +339,12 @@ public:
Future<Optional<std::string>> commit(ReadYourWritesTransaction* ryw) override;
};
class ClientProfilingImpl : public SpecialKeyRangeRWImpl {
public:
explicit ClientProfilingImpl(KeyRangeRef kr);
Future<Standalone<RangeResultRef>> getRange(ReadYourWritesTransaction* ryw, KeyRangeRef kr) const override;
Future<Optional<std::string>> commit(ReadYourWritesTransaction* ryw) override;
};
#include "flow/unactorcompiler.h"
#endif

106
fdbserver/workloads/SpecialKeySpaceCorrectness.actor.cpp
View File

@ -18,6 +18,8 @@
* limitations under the License.
*/
#include "boost/lexical_cast.hpp"
#include "fdbclient/ManagementAPI.actor.h"
#include "fdbclient/NativeAPI.actor.h"
#include "fdbclient/ReadYourWrites.h"
@ -25,6 +27,8 @@
#include "fdbclient/SpecialKeySpace.actor.h"
#include "fdbserver/TesterInterface.actor.h"
#include "fdbserver/workloads/workloads.actor.h"
#include "flow/Arena.h"
#include "flow/IRandom.h"
#include "flow/actorcompiler.h"
struct SpecialKeySpaceCorrectnessWorkload : TestWorkload {
@ -434,7 +438,8 @@ struct SpecialKeySpaceCorrectnessWorkload : TestWorkload {
}
// test case when registered range is the same as the underlying module
try {
state Standalone<RangeResultRef> result = wait(tx->getRange(KeyRangeRef(LiteralStringRef("\xff\xff/worker_interfaces/"),
state Standalone<RangeResultRef> result =
wait(tx->getRange(KeyRangeRef(LiteralStringRef("\xff\xff/worker_interfaces/"),
LiteralStringRef("\xff\xff/worker_interfaces0")),
CLIENT_KNOBS->TOO_MANY));
// We should have at least 1 process in the cluster
@ -902,6 +907,105 @@ struct SpecialKeySpaceCorrectnessWorkload : TestWorkload {
} catch (Error& e) {
wait(tx->onError(e));
}
// profile client get
loop {
try {
tx->setOption(FDBTransactionOptions::READ_SYSTEM_KEYS);
// client_txn_sample_rate
state Optional<Value> txnSampleRate =
wait(tx->get(LiteralStringRef("client_txn_sample_rate")
.withPrefix(SpecialKeySpace::getManagementApiCommandPrefix("profile"))));
ASSERT(txnSampleRate.present());
Optional<Value> txnSampleRateKey = wait(tx->get(fdbClientInfoTxnSampleRate));
if (txnSampleRateKey.present()) {
const double sampleRateDbl =
BinaryReader::fromStringRef<double>(txnSampleRateKey.get(), Unversioned());
if (!std::isinf(sampleRateDbl)) {
ASSERT(txnSampleRate.get().toString() == boost::lexical_cast<std::string>(sampleRateDbl));
} else {
ASSERT(txnSampleRate.get().toString() == "default");
}
} else {
ASSERT(txnSampleRate.get().toString() == "default");
}
// client_txn_size_limit
state Optional<Value> txnSizeLimit =
wait(tx->get(LiteralStringRef("client_txn_size_limit")
.withPrefix(SpecialKeySpace::getManagementApiCommandPrefix("profile"))));
ASSERT(txnSizeLimit.present());
Optional<Value> txnSizeLimitKey = wait(tx->get(fdbClientInfoTxnSizeLimit));
if (txnSizeLimitKey.present()) {
const int64_t sizeLimit =
BinaryReader::fromStringRef<int64_t>(txnSizeLimitKey.get(), Unversioned());
if (sizeLimit != -1) {
ASSERT(txnSizeLimit.get().toString() == boost::lexical_cast<std::string>(sizeLimit));
} else {
ASSERT(txnSizeLimit.get().toString() == "default");
}
} else {
ASSERT(txnSizeLimit.get().toString() == "default");
}
tx->reset();
break;
} catch (Error& e) {
TraceEvent(SevDebug, "ProfileClientGet").error(e);
wait(tx->onError(e));
}
}
{
state double r_sample_rate = deterministicRandom()->random01();
state int64_t r_size_limit = deterministicRandom()->randomInt64(1e3, 1e6);
// update the sample rate and size limit
loop {
try {
tx->setOption(FDBTransactionOptions::SPECIAL_KEY_SPACE_ENABLE_WRITES);
tx->set(LiteralStringRef("client_txn_sample_rate")
.withPrefix(SpecialKeySpace::getManagementApiCommandPrefix("profile")),
Value(boost::lexical_cast<std::string>(r_sample_rate)));
tx->set(LiteralStringRef("client_txn_size_limit")
.withPrefix(SpecialKeySpace::getManagementApiCommandPrefix("profile")),
Value(boost::lexical_cast<std::string>(r_size_limit)));
wait(tx->commit());
tx->reset();
break;
} catch (Error& e) {
wait(tx->onError(e));
}
}
// commit successfully, verify the system key changed
loop {
try {
tx->setOption(FDBTransactionOptions::READ_SYSTEM_KEYS);
Optional<Value> sampleRate = wait(tx->get(fdbClientInfoTxnSampleRate));
ASSERT(sampleRate.present());
ASSERT(r_sample_rate == BinaryReader::fromStringRef<double>(sampleRate.get(), Unversioned()));
Optional<Value> sizeLimit = wait(tx->get(fdbClientInfoTxnSizeLimit));
ASSERT(sizeLimit.present());
ASSERT(r_size_limit == BinaryReader::fromStringRef<int64_t>(sizeLimit.get(), Unversioned()));
tx->reset();
break;
} catch (Error& e) {
wait(tx->onError(e));
}
}
// Change back to default
loop {
try {
tx->setOption(FDBTransactionOptions::SPECIAL_KEY_SPACE_ENABLE_WRITES);
tx->set(LiteralStringRef("client_txn_sample_rate")
.withPrefix(SpecialKeySpace::getManagementApiCommandPrefix("profile")),
LiteralStringRef("default"));
tx->set(LiteralStringRef("client_txn_size_limit")
.withPrefix(SpecialKeySpace::getManagementApiCommandPrefix("profile")),
LiteralStringRef("default"));
wait(tx->commit());
tx->reset();
break;
} catch (Error& e) {
wait(tx->onError(e));
}
}
}
return Void();
}
};