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/**
* Copyright (C) 2021-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/db/process_health/test_health_observer.h"
#include "mongo/db/commands/test_commands_enabled.h"
#include "mongo/db/process_health/health_observer_registration.h"
#include "mongo/logv2/log.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kProcessHealth
namespace mongo {
namespace process_health {
MONGO_FAIL_POINT_DEFINE(hangTestHealthObserver);
MONGO_FAIL_POINT_DEFINE(testHealthObserver);
MONGO_FAIL_POINT_DEFINE(badConfigTestHealthObserver);
MONGO_FAIL_POINT_DEFINE(statusFailureTestHealthObserver);
Future<HealthCheckStatus> TestHealthObserver::periodicCheckImpl(
PeriodicHealthCheckContext&& periodicCheckContext) noexcept {
LOGV2_DEBUG(5936801, 2, "Test health observer executing");
hangTestHealthObserver.pauseWhileSet();
if (statusFailureTestHealthObserver.shouldFail()) {
return Status(ErrorCodes::BadValue, "Status failure in test health observer");
}
auto result = Future<HealthCheckStatus>::makeReady(makeHealthyStatus());
testHealthObserver.executeIf(
[this, &result](const BSONObj& data) {
auto code = data["code"].checkAndGetStringData();
auto msg = data["msg"].checkAndGetStringData();
result = Future<HealthCheckStatus>::makeReady(makeSimpleFailedStatus(
Severity::kFailure,
{Status(ErrorCodes::fromString(code.toString()), msg.toString())}));
},
[&](const BSONObj& data) { return !data.isEmpty(); });
LOGV2_DEBUG(5936802, 2, "Test health observer returns", "result"_attr = result.get());
return result;
}
bool TestHealthObserver::isConfigured() const {
if (badConfigTestHealthObserver.shouldFail()) {
return false;
}
return true;
}
namespace {
MONGO_INITIALIZER(TestHealthObserver)(InitializerContext*) {
// Failpoints can only be set when test commands are enabled, and so the test health observer
// is only useful in that case.
if (getTestCommandsEnabled()) {
LOGV2(5936803, "Test health observer instantiated");
HealthObserverRegistration::registerObserverFactory(
[](ServiceContext* svcCtx) { return std::make_unique<TestHealthObserver>(svcCtx); });
}
}
} // namespace
} // namespace process_health
} // namespace mongo
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