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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.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kTest
#include <fmt/format.h>
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/bson/json.h"
#include "mongo/db/s/resharding/resharding_metrics.h"
#include "mongo/db/service_context_test_fixture.h"
#include "mongo/logv2/log.h"
#include "mongo/unittest/death_test.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/clock_source_mock.h"
#include "mongo/util/uuid.h"
namespace mongo {
namespace {
using namespace fmt::literals;
constexpr auto kOpTimeRemaining = "remainingOperationTimeEstimated"_sd;
class ReshardingMetricsTest : public ServiceContextTest {
public:
enum OpReportType {
CumulativeReport,
CurrentOpReportDonorRole,
CurrentOpReportRecipientRole,
CurrentOpReportCoordinatorRole
};
void setUp() override {
auto clockSource = std::make_unique<ClockSourceMock>();
_clockSource = clockSource.get();
getGlobalServiceContext()->setFastClockSource(std::move(clockSource));
}
auto getMetrics() {
return ReshardingMetrics::get(getGlobalServiceContext());
}
// Timer step in milliseconds
static constexpr auto kTimerStep = 100;
void advanceTime(Milliseconds step = Milliseconds{kTimerStep}) {
_clockSource->advance(step);
}
auto getReport(OpReportType reportType) {
BSONObjBuilder bob;
if (reportType == OpReportType::CumulativeReport) {
getMetrics()->serializeCumulativeOpMetrics(&bob);
} else if (reportType == OpReportType::CurrentOpReportDonorRole) {
getMetrics()->serializeCurrentOpMetrics(
&bob, ReshardingMetrics::ReporterOptions::Role::kDonor);
} else if (reportType == OpReportType::CurrentOpReportRecipientRole) {
getMetrics()->serializeCurrentOpMetrics(
&bob, ReshardingMetrics::ReporterOptions::Role::kRecipient);
} else {
getMetrics()->serializeCurrentOpMetrics(
&bob, ReshardingMetrics::ReporterOptions::Role::kCoordinator);
}
return bob.obj();
}
void checkMetrics(std::string tag, int expectedValue, OpReportType reportType) {
const auto report = getReport(reportType);
checkMetrics(report, std::move(tag), expectedValue);
}
void checkMetrics(std::string tag,
int expectedValue,
std::string errMsg,
OpReportType reportType) {
const auto report = getReport(reportType);
checkMetrics(report, std::move(tag), expectedValue, std::move(errMsg));
}
void checkMetrics(const BSONObj& report,
std::string tag,
int expectedValue,
std::string errMsg = "Unexpected value") const {
ASSERT_EQ(report.getIntField(tag), expectedValue)
<< fmt::format("{}: {}", errMsg, report.toString());
};
private:
ClockSourceMock* _clockSource;
};
// TODO Re-enable once underlying invariants are re-enabled
/*
DEATH_TEST_F(ReshardingMetricsTest, RunOnCompletionBeforeOnStart, "No operation is in progress") {
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kSuccess);
}
DEATH_TEST_F(ReshardingMetricsTest,
RunOnStepUpAfterOnStartInvariants,
"Another operation is in progress") {
getMetrics()->onStart();
getMetrics()->onStepUp();
}
DEATH_TEST_F(ReshardingMetricsTest,
RunOnCompletionAfterOnStepDownInvariants,
"No operation is in progress") {
getMetrics()->onStart();
getMetrics()->onStepDown();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kSuccess);
}
*/
TEST_F(ReshardingMetricsTest, RunOnStepDownAfterOnCompletionIsSafe) {
getMetrics()->onStart();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kSuccess);
getMetrics()->onStepDown();
}
TEST_F(ReshardingMetricsTest, OperationStatus) {
getMetrics()->onStart();
const auto report = getReport(OpReportType::CurrentOpReportCoordinatorRole);
ASSERT_EQ(report.getStringField("opStatus"),
ReshardingOperationStatus_serializer(ReshardingOperationStatusEnum::kRunning));
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kSuccess);
}
TEST_F(ReshardingMetricsTest, TestOperationStatus) {
const auto kNumSuccessfulOps = 3;
const auto kNumFailedOps = 5;
const auto kNumCanceledOps = 7;
for (auto i = 0; i < kNumSuccessfulOps; i++) {
getMetrics()->onStart();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kSuccess);
}
for (auto i = 0; i < kNumFailedOps; i++) {
getMetrics()->onStart();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kFailure);
}
for (auto i = 0; i < kNumCanceledOps; i++) {
getMetrics()->onStart();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kCanceled);
}
checkMetrics("countReshardingSuccessful", kNumSuccessfulOps, OpReportType::CumulativeReport);
checkMetrics("countReshardingFailures", kNumFailedOps, OpReportType::CumulativeReport);
checkMetrics("countReshardingCanceled", kNumCanceledOps, OpReportType::CumulativeReport);
const auto total = kNumSuccessfulOps + kNumFailedOps + kNumCanceledOps;
checkMetrics("countReshardingOperations", total, OpReportType::CumulativeReport);
getMetrics()->onStart();
checkMetrics("countReshardingOperations", total + 1, OpReportType::CumulativeReport);
}
TEST_F(ReshardingMetricsTest, TestElapsedTime) {
getMetrics()->onStart();
const auto elapsedTime = 1;
advanceTime(Seconds(elapsedTime));
checkMetrics("totalOperationTimeElapsed", elapsedTime, OpReportType::CurrentOpReportDonorRole);
}
TEST_F(ReshardingMetricsTest, TestDonorAndRecipientMetrics) {
getMetrics()->onStart();
const auto elapsedTime = 1;
advanceTime(Seconds(elapsedTime));
// Update metrics for donor
const auto kWritesDuringCriticalSection = 7;
getMetrics()->setDonorState(DonorStateEnum::kDonatingOplogEntries);
getMetrics()->startInCriticalSection();
getMetrics()->onWriteDuringCriticalSection(kWritesDuringCriticalSection);
advanceTime(Seconds(elapsedTime));
// Update metrics for recipient
const auto kDocumentsToCopy = 50;
const auto kBytesToCopy = 740;
const auto kCopyProgress = 50;
getMetrics()->setRecipientState(RecipientStateEnum::kCreatingCollection);
getMetrics()->setDocumentsToCopy(kDocumentsToCopy, kBytesToCopy);
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy * kCopyProgress / 100,
kBytesToCopy * kCopyProgress / 100);
advanceTime(Seconds(elapsedTime));
const auto currentDonorOpReport = getReport(OpReportType::CurrentOpReportDonorRole);
const auto currentRecipientOpReport = getReport(OpReportType::CurrentOpReportRecipientRole);
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kSuccess);
checkMetrics(currentRecipientOpReport, "totalCopyTimeElapsed", elapsedTime);
checkMetrics(currentRecipientOpReport, "bytesCopied", kBytesToCopy * kCopyProgress / 100);
checkMetrics(
currentRecipientOpReport, "documentsCopied", kDocumentsToCopy * kCopyProgress / 100);
checkMetrics(currentDonorOpReport, "totalCriticalSectionTimeElapsed", elapsedTime * 2);
checkMetrics(
currentDonorOpReport, "countWritesDuringCriticalSection", kWritesDuringCriticalSection);
// Expected remaining time = totalCopyTimeElapsed + 2 * estimated time to copy remaining
checkMetrics(currentDonorOpReport,
"remainingOperationTimeEstimated",
elapsedTime + 2 * (100 - kCopyProgress) / kCopyProgress * elapsedTime);
const auto cumulativeReportAfterCompletion = getReport(OpReportType::CumulativeReport);
checkMetrics(
cumulativeReportAfterCompletion, "bytesCopied", kBytesToCopy * kCopyProgress / 100);
checkMetrics(
cumulativeReportAfterCompletion, "documentsCopied", kDocumentsToCopy * kCopyProgress / 100);
checkMetrics(cumulativeReportAfterCompletion,
"countWritesDuringCriticalSection",
kWritesDuringCriticalSection);
}
TEST_F(ReshardingMetricsTest, CumulativeOpMetricsAreRetainedAfterCompletion) {
auto constexpr kTag = "documentsCopied";
getMetrics()->onStart();
const auto kDocumentsToCopy = 2;
const auto kBytesToCopy = 200;
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy, kBytesToCopy);
advanceTime();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kFailure);
advanceTime();
checkMetrics(kTag,
kDocumentsToCopy,
"Cumulative metrics are not retained",
OpReportType::CumulativeReport);
getMetrics()->onStart();
checkMetrics(
kTag, kDocumentsToCopy, "Cumulative metrics are reset", OpReportType::CumulativeReport);
}
TEST_F(ReshardingMetricsTest, CumulativeOpMetricsAreRetainedAfterCancellation) {
auto constexpr kTag = "documentsCopied";
getMetrics()->onStart();
const auto kDocumentsToCopy = 2;
const auto kBytesToCopy = 200;
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy, kBytesToCopy);
advanceTime();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kCanceled);
advanceTime();
checkMetrics(kTag,
kDocumentsToCopy,
"Cumulative metrics are not retained",
OpReportType::CumulativeReport);
getMetrics()->onStart();
checkMetrics(
kTag, kDocumentsToCopy, "Cumulative metrics are reset", OpReportType::CumulativeReport);
}
TEST_F(ReshardingMetricsTest, CurrentOpMetricsAreResetAfterCompletion) {
auto constexpr kTag = "documentsCopied";
getMetrics()->onStart();
const auto kDocumentsToCopy = 2;
const auto kBytesToCopy = 200;
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy, kBytesToCopy);
checkMetrics(kTag,
kDocumentsToCopy,
"Current metrics are not set",
OpReportType::CurrentOpReportRecipientRole);
advanceTime();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kSuccess);
advanceTime();
getMetrics()->onStart();
checkMetrics(
kTag, 0, "Current metrics are not reset", OpReportType::CurrentOpReportRecipientRole);
}
TEST_F(ReshardingMetricsTest, CurrentOpMetricsAreNotRetainedAfterCompletion) {
auto constexpr kTag = "documentsCopied";
getMetrics()->onStart();
const auto kDocumentsToCopy = 2;
const auto kBytesToCopy = 200;
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy, kBytesToCopy);
checkMetrics(kTag,
kDocumentsToCopy,
"Current metrics are not set",
OpReportType::CurrentOpReportRecipientRole);
advanceTime();
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kFailure);
advanceTime();
ASSERT_FALSE(getReport(OpReportType::CurrentOpReportRecipientRole)[kTag].ok());
}
TEST_F(ReshardingMetricsTest, CurrentOpMetricsAreNotRetainedAfterStepDown) {
auto constexpr kTag = "documentsCopied";
getMetrics()->onStart();
const auto kDocumentsToCopy = 2;
const auto kBytesToCopy = 200;
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy, kBytesToCopy);
checkMetrics(kTag,
kDocumentsToCopy,
"Current metrics are not set",
OpReportType::CurrentOpReportRecipientRole);
advanceTime();
getMetrics()->onStepDown();
advanceTime();
ASSERT_FALSE(getReport(OpReportType::CurrentOpReportRecipientRole)[kTag].ok());
}
TEST_F(ReshardingMetricsTest, EstimatedRemainingOperationTime) {
auto constexpr kTag = "remainingOperationTimeEstimated";
const auto elapsedTime = 1;
getMetrics()->onStart();
checkMetrics(kTag, -1, OpReportType::CurrentOpReportDonorRole);
const auto kDocumentsToCopy = 2;
const auto kBytesToCopy = 200;
getMetrics()->setRecipientState(RecipientStateEnum::kCreatingCollection);
getMetrics()->setDocumentsToCopy(kDocumentsToCopy, kBytesToCopy);
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy / 2, kBytesToCopy / 2);
advanceTime(Seconds(elapsedTime));
// Since 50% of the data is copied, the remaining copy time equals the elapsed copy time, which
// is equal to `elapsedTime` seconds.
checkMetrics(kTag, elapsedTime + 2 * elapsedTime, OpReportType::CurrentOpReportDonorRole);
const auto kOplogEntriesFetched = 4;
const auto kOplogEntriesApplied = 2;
getMetrics()->setRecipientState(RecipientStateEnum::kApplying);
getMetrics()->onOplogEntriesFetched(kOplogEntriesFetched);
getMetrics()->onOplogEntriesApplied(kOplogEntriesApplied);
advanceTime(Seconds(elapsedTime));
// So far, the time to apply oplog entries equals `elapsedTime` seconds.
checkMetrics(kTag,
elapsedTime * (kOplogEntriesFetched / kOplogEntriesApplied - 1),
OpReportType::CurrentOpReportDonorRole);
}
TEST_F(ReshardingMetricsTest, CurrentOpReportForDonor) {
const auto kDonorState = DonorStateEnum::kDonatingOplogEntries;
getMetrics()->onStart();
advanceTime(Seconds(2));
getMetrics()->setDonorState(kDonorState);
getMetrics()->startInCriticalSection();
advanceTime(Seconds(3));
const ReshardingMetrics::ReporterOptions options(
ReshardingMetrics::ReporterOptions::Role::kDonor,
UUID::parse("12345678-1234-1234-1234-123456789abc").getValue(),
NamespaceString("db", "collection"),
BSON("id" << 1),
true);
const auto expected =
fromjson(fmt::format("{{ type: \"op\","
"desc: \"ReshardingDonorService {0}\","
"op: \"command\","
"ns: \"{1}\","
"originatingCommand: {{ reshardCollection: \"{1}\","
"key: {2},"
"unique: {3},"
"collation: {{ locale: \"simple\" }} }},"
"totalOperationTimeElapsed: 5,"
"remainingOperationTimeEstimated: -1,"
"countWritesDuringCriticalSection: 0,"
"totalCriticalSectionTimeElapsed : 3,"
"donorState: \"{4}\","
"opStatus: \"running\" }}",
options.id.toString(),
options.nss.toString(),
options.shardKey.toString(),
options.unique ? "true" : "false",
DonorState_serializer(kDonorState)));
const auto report = getMetrics()->reportForCurrentOp(options);
ASSERT_BSONOBJ_EQ(expected, report);
}
TEST_F(ReshardingMetricsTest, CurrentOpReportForRecipient) {
const auto kRecipientState = RecipientStateEnum::kCloning;
constexpr auto kDocumentsToCopy = 500;
constexpr auto kDocumentsCopied = kDocumentsToCopy * 0.5;
static_assert(kDocumentsToCopy >= kDocumentsCopied);
constexpr auto kBytesToCopy = 8192;
constexpr auto kBytesCopied = kBytesToCopy * 0.5;
static_assert(kBytesToCopy >= kBytesCopied);
constexpr auto kDelayBeforeCloning = Seconds(2);
getMetrics()->onStart();
advanceTime(kDelayBeforeCloning);
constexpr auto kTimeSpentCloning = Seconds(3);
getMetrics()->setRecipientState(RecipientStateEnum::kCreatingCollection);
getMetrics()->setDocumentsToCopy(kDocumentsToCopy, kBytesToCopy);
getMetrics()->setRecipientState(kRecipientState);
advanceTime(kTimeSpentCloning);
getMetrics()->onDocumentsCopied(kDocumentsCopied, kBytesCopied);
const auto kTimeToCopyRemainingSeconds =
durationCount<Seconds>(kTimeSpentCloning) * (kBytesToCopy / kBytesCopied - 1);
const auto kRemainingOperationTimeSeconds =
durationCount<Seconds>(kTimeSpentCloning) + 2 * kTimeToCopyRemainingSeconds;
const ReshardingMetrics::ReporterOptions options(
ReshardingMetrics::ReporterOptions::Role::kRecipient,
UUID::parse("12345678-1234-1234-1234-123456789def").getValue(),
NamespaceString("db", "collection"),
BSON("id" << 1),
false);
const auto expected =
fromjson(fmt::format("{{ type: \"op\","
"desc: \"ReshardingRecipientService {0}\","
"op: \"command\","
"ns: \"{1}\","
"originatingCommand: {{ reshardCollection: \"{1}\","
"key: {2},"
"unique: {3},"
"collation: {{ locale: \"simple\" }} }},"
"totalOperationTimeElapsed: {4},"
"remainingOperationTimeEstimated: {5},"
"approxDocumentsToCopy: {6},"
"documentsCopied: {7},"
"approxBytesToCopy: {8},"
"bytesCopied: {9},"
"totalCopyTimeElapsed: {10},"
"oplogEntriesFetched: 0,"
"oplogEntriesApplied: 0,"
"totalApplyTimeElapsed: 0,"
"recipientState: \"{11}\","
"opStatus: \"running\" }}",
options.id.toString(),
options.nss.toString(),
options.shardKey.toString(),
options.unique ? "true" : "false",
durationCount<Seconds>(kDelayBeforeCloning + kTimeSpentCloning),
kRemainingOperationTimeSeconds,
kDocumentsToCopy,
kDocumentsCopied,
kBytesToCopy,
kBytesCopied,
durationCount<Seconds>(kTimeSpentCloning),
RecipientState_serializer(kRecipientState)));
const auto report = getMetrics()->reportForCurrentOp(options);
ASSERT_BSONOBJ_EQ(expected, report);
}
TEST_F(ReshardingMetricsTest, CurrentOpReportForCoordinator) {
const auto kCoordinatorState = CoordinatorStateEnum::kInitializing;
const auto kSomeDuration = Seconds(10);
getMetrics()->onStart();
getMetrics()->setCoordinatorState(kCoordinatorState);
advanceTime(kSomeDuration);
const ReshardingMetrics::ReporterOptions options(
ReshardingMetrics::ReporterOptions::Role::kCoordinator,
UUID::parse("12345678-1234-1234-1234-123456789cba").getValue(),
NamespaceString("db", "collection"),
BSON("id" << 1),
false);
const auto expected =
fromjson(fmt::format("{{ type: \"op\","
"desc: \"ReshardingCoordinatorService {0}\","
"op: \"command\","
"ns: \"{1}\","
"originatingCommand: {{ reshardCollection: \"{1}\","
"key: {2},"
"unique: {3},"
"collation: {{ locale: \"simple\" }} }},"
"totalOperationTimeElapsed: {4},"
"remainingOperationTimeEstimated: -1,"
"coordinatorState: \"{5}\","
"opStatus: \"running\" }}",
options.id.toString(),
options.nss.toString(),
options.shardKey.toString(),
options.unique ? "true" : "false",
durationCount<Seconds>(kSomeDuration),
CoordinatorState_serializer(kCoordinatorState)));
const auto report = getMetrics()->reportForCurrentOp(options);
ASSERT_BSONOBJ_EQ(expected, report);
}
TEST_F(ReshardingMetricsTest, EstimatedRemainingOperationTimeCloning) {
// Copy N docs @ timePerDoc. Check the progression of the estimated time remaining.
auto m = getMetrics();
m->onStart();
auto timePerDocument = Seconds(2);
int64_t bytesPerDocument = 1024;
int64_t documentsToCopy = 409;
int64_t bytesToCopy = bytesPerDocument * documentsToCopy;
m->setRecipientState(RecipientStateEnum::kCreatingCollection);
m->setDocumentsToCopy(documentsToCopy, bytesToCopy);
m->setRecipientState(RecipientStateEnum::kCloning);
auto remainingTime = 2 * timePerDocument * documentsToCopy;
double maxAbsRelErr = 0;
for (int64_t copied = 0; copied < documentsToCopy; ++copied) {
double output =
getReport(OpReportType::CurrentOpReportRecipientRole)[kOpTimeRemaining].Number();
if (copied == 0) {
ASSERT_EQ(output, -1);
} else {
ASSERT_GTE(output, 0);
auto expected = durationCount<Seconds>(remainingTime);
// Check that error is pretty small (it should get better as the operation progresses)
double absRelErr = std::abs((output - expected) / expected);
ASSERT_LT(absRelErr, 0.05)
<< "output={}, expected={}, copied={}"_format(output, expected, copied);
maxAbsRelErr = std::max(maxAbsRelErr, absRelErr);
}
m->onDocumentsCopied(1, bytesPerDocument);
advanceTime(timePerDocument);
remainingTime -= timePerDocument;
}
LOGV2_DEBUG(
5422700, 3, "Max absolute relative error observed", "maxAbsRelErr"_attr = maxAbsRelErr);
}
TEST_F(ReshardingMetricsTest, EstimatedRemainingOperationTimeApplying) {
// Perform N ops @ timePerOp. Check the progression of the estimated time remaining.
auto m = getMetrics();
m->onStart();
m->setRecipientState(RecipientStateEnum::kApplying);
// 1 extra millisecond here because otherwise an error of just 1ms will round this down to the
// next second.
auto timePerOp = Milliseconds(1001);
int64_t fetched = 10000;
m->onOplogEntriesFetched(fetched);
auto remainingTime = timePerOp * fetched;
double maxAbsRelErr = 0;
for (int64_t applied = 0; applied < fetched; ++applied) {
double output =
getReport(OpReportType::CurrentOpReportRecipientRole)[kOpTimeRemaining].Number();
if (applied == 0) {
ASSERT_EQ(output, -1);
} else {
auto expected = durationCount<Seconds>(remainingTime);
// Check that error is pretty small (it should get better as the operation progresses)
double absRelErr = std::abs((output - expected) / expected);
ASSERT_LT(absRelErr, 0.05)
<< "output={}, expected={}, applied={}"_format(output, expected, applied);
maxAbsRelErr = std::max(maxAbsRelErr, absRelErr);
}
advanceTime(timePerOp);
m->onOplogEntriesApplied(1);
remainingTime -= timePerOp;
}
LOGV2_DEBUG(
5422701, 3, "Max absolute relative error observed", "maxAbsRelErr"_attr = maxAbsRelErr);
}
TEST_F(ReshardingMetricsTest, CumulativeOpMetricsAccumulate) {
auto constexpr kTag = "documentsCopied";
getMetrics()->onStart();
const auto kDocumentsToCopy1 = 2;
const auto kBytesToCopy1 = 200;
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy1, kBytesToCopy1);
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kFailure);
getMetrics()->onStart();
const auto kDocumentsToCopy2 = 3;
const auto kBytesToCopy2 = 400;
getMetrics()->setRecipientState(RecipientStateEnum::kCloning);
getMetrics()->onDocumentsCopied(kDocumentsToCopy2, kBytesToCopy2);
getMetrics()->onCompletion(ReshardingOperationStatusEnum::kFailure);
checkMetrics(kTag,
kDocumentsToCopy1 + kDocumentsToCopy2,
"Cumulative metrics are not accumulated",
OpReportType::CumulativeReport);
}
} // namespace
} // namespace mongo
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