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/**
* Copyright (C) 2020-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include <benchmark/benchmark.h>
#include "mongo/db/matcher/expression_parser.h"
#include "mongo/db/pipeline/expression.h"
#include "mongo/db/pipeline/expression_context_for_test.h"
#include "mongo/db/query/query_test_service_context.h"
namespace mongo {
namespace {
/**
* Tests performance of 'evaluate()' of $dateDiff expression.
*
* startDate - start date in milliseconds from the UNIX epoch.
* endDate - end date in milliseconds from the UNIX epoch.
* unit - a string expression of units to use for date difference calculation.
* timezone - a string representation of timezone to use for date difference calculation.
* state - benchmarking state.
*/
void testDateDiffExpression(long long startDate,
long long endDate,
std::string unit,
boost::optional<std::string> timezone,
benchmark::State& state) {
QueryTestServiceContext testServiceContext;
auto opContext = testServiceContext.makeOperationContext();
NamespaceString nss("test.bm");
boost::intrusive_ptr<ExpressionContextForTest> exprContext =
new ExpressionContextForTest(opContext.get(), nss);
// Build a $dateDiff expression.
BSONObjBuilder objBuilder;
objBuilder << "startDate" << Date_t::fromMillisSinceEpoch(startDate) << "endDate"
<< Date_t::fromMillisSinceEpoch(endDate) << "unit" << unit;
if (timezone) {
objBuilder << "timezone" << *timezone;
}
auto expression = BSON("$dateDiff" << objBuilder.obj());
auto dateDiffExpression = Expression::parseExpression(
exprContext.get(), expression, exprContext->variablesParseState);
// Prepare parameters for the 'evaluate()' call.
auto variables = &(exprContext->variables);
Document document;
// Run the test.
for (auto keepRunning : state) {
benchmark::DoNotOptimize(dateDiffExpression->evaluate(document, variables));
benchmark::ClobberMemory();
}
}
void BM_DateDiffEvaluateMinute300Years(benchmark::State& state) {
testDateDiffExpression(-1640989478000LL /* 1918-01-01*/,
7826117722000LL /* 2218-01-01*/,
"minute",
boost::none /*timezone*/,
state);
}
void BM_DateDiffEvaluateMinute2Years(benchmark::State& state) {
testDateDiffExpression(1542448721000LL /* 2018-11-17*/,
1605607121000LL /* 2020-11-17*/,
"minute",
boost::none /*timezone*/,
state);
}
void BM_DateDiffEvaluateMinute2YearsWithTimezone(benchmark::State& state) {
testDateDiffExpression(1542448721000LL /* 2018-11-17*/,
1605607121000LL /* 2020-11-17*/,
"minute",
std::string{"America/New_York"},
state);
}
void BM_DateDiffEvaluateWeek(benchmark::State& state) {
testDateDiffExpression(7826117722000LL /* 2218-01-01*/,
4761280721000LL /*2120-11-17*/,
"week",
boost::none /*timezone*/,
state);
}
BENCHMARK(BM_DateDiffEvaluateMinute300Years);
BENCHMARK(BM_DateDiffEvaluateMinute2Years);
BENCHMARK(BM_DateDiffEvaluateMinute2YearsWithTimezone);
BENCHMARK(BM_DateDiffEvaluateWeek);
/**
* Tests performance of evaluate() method of $dateAdd
*/
void testDateAddExpression(long long startDate,
std::string unit,
long long amount,
boost::optional<std::string> timezone,
benchmark::State& state) {
QueryTestServiceContext testServiceContext;
auto opContext = testServiceContext.makeOperationContext();
NamespaceString nss("test.bm");
boost::intrusive_ptr<ExpressionContextForTest> expCtx =
new ExpressionContextForTest(opContext.get(), nss);
BSONObjBuilder objBuilder;
objBuilder << "startDate" << Date_t::fromMillisSinceEpoch(startDate) << "unit" << unit
<< "amount" << amount;
if (timezone) {
objBuilder << "timezone" << *timezone;
}
auto doc = BSON("$dateAdd" << objBuilder.obj());
auto dateAddExp = Expression::parseExpression(expCtx.get(), doc, expCtx->variablesParseState);
auto variables = &(expCtx->variables);
Document document;
for (auto keepRunning : state) {
benchmark::DoNotOptimize(dateAddExp->evaluate(document, variables));
benchmark::ClobberMemory();
}
}
void BM_DateAddEvaluate10Days(benchmark::State& state) {
testDateAddExpression(1604131115000LL,
"day",
10LL,
boost::none, /* timezone */
state);
}
void BM_DateAddEvaluate100KSeconds(benchmark::State& state) {
testDateAddExpression(1604131115000LL,
"second",
100000LL,
boost::none, /* timezone */
state);
}
void BM_DateAddEvaluate100Years(benchmark::State& state) {
testDateAddExpression(1604131115000LL,
"year",
100LL,
boost::none, /* timezone */
state);
}
void BM_DateAddEvaluate12HoursWithTimezone(benchmark::State& state) {
testDateAddExpression(1604131115000LL, "hour", 12LL, std::string{"America/New_York"}, state);
}
BENCHMARK(BM_DateAddEvaluate10Days);
BENCHMARK(BM_DateAddEvaluate100KSeconds);
BENCHMARK(BM_DateAddEvaluate100Years);
BENCHMARK(BM_DateAddEvaluate12HoursWithTimezone);
} // namespace
} // namespace mongo
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