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foundationdb/fdbserver/workloads/StatusWorkload.actor.cpp

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/*
* StatusWorkload.actor.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2018 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 "fdbclient/StatusClient.h"
#include "flow/UnitTest.h"
#include "fdbclient/Schemas.h"
#include "fdbclient/ManagementAPI.actor.h"
#include "flow/actorcompiler.h" // This must be the last #include.
extern bool noUnseed;
struct StatusWorkload : TestWorkload {
double testDuration, requestsPerSecond;
bool enableLatencyBands;
Future<Void> latencyBandActor;
PerfIntCounter requests, replies, errors, totalSize;
Optional<StatusObject> parsedSchema;
StatusWorkload(WorkloadContext const& wcx)
: TestWorkload(wcx),
requests("Status requests issued"), replies("Status replies received"), errors("Status Errors"), totalSize("Status reply size sum")
{
testDuration = getOption(options, LiteralStringRef("testDuration"), 10.0);
requestsPerSecond = getOption(options, LiteralStringRef("requestsPerSecond"), 0.5);
enableLatencyBands = getOption(options, LiteralStringRef("enableLatencyBands"), g_random->random01() < 0.5);
auto statusSchemaStr = getOption(options, LiteralStringRef("schema"), JSONSchemas::statusSchema);
if (statusSchemaStr.size()) {
json_spirit::mValue schema = readJSONStrictly(statusSchemaStr.toString());
parsedSchema = schema.get_obj();
// This is sort of a hack, but generate code coverage *requirements* for everything in schema
schemaCoverageRequirements(parsedSchema.get());
}
noUnseed = true;
}
virtual std::string description() { return "StatusWorkload"; }
virtual Future<Void> setup(Database const& cx) {
if(enableLatencyBands) {
latencyBandActor = configureLatencyBands(this, cx);
}
return Void();
}
virtual Future<Void> start(Database const& cx) {
if (clientId != 0)
return Void();
return success(timeout(fetcher(cx->getConnectionFile(), this), testDuration));
}
virtual Future<bool> check(Database const& cx) {
return errors.getValue() == 0;
}
virtual void getMetrics(vector<PerfMetric>& m) {
if (clientId != 0)
return;
m.push_back(requests.getMetric());
m.push_back(replies.getMetric());
m.push_back(PerfMetric("Average Reply Size", replies.getValue() ? totalSize.getValue() / replies.getValue() : 0, false));
m.push_back(errors.getMetric());
}
static void schemaCoverageRequirements( StatusObject const& schema, std::string schema_path = std::string() ) {
try {
for(auto& skv : schema) {
std::string spath = schema_path + "." + skv.first;
schemaCoverage(spath, false);
if (skv.second.type() == json_spirit::array_type && skv.second.get_array().size()) {
schemaCoverageRequirements( skv.second.get_array()[0].get_obj(), spath + "[0]" );
} else if (skv.second.type() == json_spirit::obj_type) {
if (skv.second.get_obj().count("$enum")) {
for(auto& enum_item : skv.second.get_obj().at("$enum").get_array())
schemaCoverage(spath + ".$enum." + enum_item.get_str(), false);
} else
schemaCoverageRequirements( skv.second.get_obj(), spath );
}
}
} catch (std::exception& e) {
TraceEvent(SevError,"SchemaCoverageRequirementsException").detail("What", e.what());
throw unknown_error();
} catch (...) {
TraceEvent(SevError,"SchemaCoverageRequirementsException");
throw unknown_error();
}
}
static std::string generateBands() {
int numBands = g_random->randomInt(0, 10);
std::vector<double> bands;
while(bands.size() < numBands) {
bands.push_back(g_random->random01() * pow(10, g_random->randomInt(-5, 1)));
}
std::string result = "\"bands\":[";
for(int i = 0; i < bands.size(); ++i) {
if(i > 0) {
result += ",";
}
result += format("%f", bands[i]);
}
return result + "]";
}
ACTOR Future<Void> configureLatencyBands(StatusWorkload *self, Database cx) {
loop {
state Transaction tr(cx);
loop {
try {
tr.setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
tr.setOption(FDBTransactionOptions::LOCK_AWARE);
std::string config = "{"
"\"get_read_version\":{" + generateBands() + "},"
"\"read\":{" + generateBands() + format(", \"max_key_selector_offset\":%d, \"max_read_bytes\":%d},", g_random->randomInt(0, 10000), g_random->randomInt(0, 1000000)) + ""
"\"commit\":{" + generateBands() + format(", \"max_commit_bytes\":%d", g_random->randomInt(0, 1000000)) + "}"
"}";
tr.set(latencyBandConfigKey, ValueRef(config));
wait(tr.commit());
if(g_random->random01() < 0.3) {
return Void();
}
wait(delay(g_random->random01() * 120));
}
catch(Error &e) {
wait(tr.onError(e));
}
}
}
}
ACTOR Future<Void> fetcher(Reference<ClusterConnectionFile> connFile, StatusWorkload *self) {
state double lastTime = now();
loop{
wait(poisson(&lastTime, 1.0 / self->requestsPerSecond));
try {
// Since we count the requests that start, we could potentially never really hear back?
++self->requests;
state double issued = now();
StatusObject result = wait(StatusClient::statusFetcher(connFile));
++self->replies;
BinaryWriter br(AssumeVersion(currentProtocolVersion));
save(br, result);
self->totalSize += br.getLength();
TraceEvent("StatusWorkloadReply").detail("ReplySize", br.getLength()).detail("Latency", now() - issued);//.detail("Reply", json_spirit::write_string(json_spirit::mValue(result)));
std::string errorStr;
if (self->parsedSchema.present() && !schemaMatch(self->parsedSchema.get(), result, errorStr, SevError, true) )
TraceEvent(SevError, "StatusWorkloadValidationFailed").detail("JSON", json_spirit::write_string(json_spirit::mValue(result)));
}
catch (Error& e) {
if (e.code() != error_code_actor_cancelled) {
TraceEvent(SevError, "StatusWorkloadError").error(e);
++self->errors;
}
throw;
}
}
}
};
WorkloadFactory<StatusWorkload> StatusWorkloadFactory("Status");
TEST_CASE("/fdbserver/status/schema/basic") {
json_spirit::mValue schema = readJSONStrictly("{\"apple\":3,\"banana\":\"foo\",\"sub\":{\"thing\":true},\"arr\":[{\"a\":1,\"b\":2}],\"en\":{\"$enum\":[\"foo\",\"bar\"]},\"mapped\":{\"$map\":{\"x\":true}}}");
auto check = [&schema](bool expect_ok, std::string t) {
json_spirit::mValue test = readJSONStrictly(t);
TraceEvent("SchemaMatch").detail("Schema", json_spirit::write_string(schema)).detail("Value", json_spirit::write_string(test)).detail("Expect", expect_ok);
std::string errorStr;
ASSERT( expect_ok == schemaMatch(schema.get_obj(), test.get_obj(), errorStr, expect_ok ? SevError : SevInfo, true) );
};
check(true, "{}");
check(true, "{\"apple\":4}");
check(false, "{\"apple\":\"wrongtype\"}");
check(false, "{\"extrathingy\":1}");
check(true, "{\"banana\":\"b\",\"sub\":{\"thing\":false}}");
check(false, "{\"banana\":\"b\",\"sub\":{\"thing\":false, \"x\":0}}");
check(true, "{\"arr\":[{},{\"a\":0}]}");
check(false, "{\"arr\":[{\"a\":0},{\"c\":0}]}");
check(true, "{\"en\":\"bar\"}");
check(false, "{\"en\":\"baz\"}");
check(true, "{\"mapped\":{\"item1\":{\"x\":false},\"item2\":{}}}");
check(false, "{\"mapped\":{\"item1\":{\"x\":false},\"item2\":{\"y\":1}}}");
return Void();
}
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