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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::kDefault

#include "mongo/base/init.h"
#include "mongo/logv2/log.h"
#include "mongo/util/testing_options_gen.h"
#include "mongo/util/testing_proctor.h"

namespace mongo {
namespace {

/**
 * The following initializer must always run before "DisableTestingDiagnosticsByDefault" to ensure
 * it is allowed to set (enables/disables) testing diagnostics.
 */
MONGO_INITIALIZER_GENERAL(TestingDiagnostics,
                          ("EndServerParameterRegistration"),
                          ("DisableTestingDiagnosticsByDefault"))
(InitializerContext*) {
    // Initialize testing diagnostics only if it has not been already initialized, or it must be
    // enabled by the initializer (i.e., "testingDiagnosticsEnabled=true"). This ensures testing
    // diagnostics cannot be set beyond this point.
    if (!TestingProctor::instance().isInitialized() || gTestingDiagnosticsEnabledAtStartup) {
        TestingProctor::instance().setEnabled(gTestingDiagnosticsEnabledAtStartup);
    }

    if (TestingProctor::instance().isEnabled()) {
        LOGV2_OPTIONS(4672602,
                      {logv2::LogTag::kStartupWarnings},
                      "Testing behaviors are enabled. This has serious implications for both "
                      "performance and security.");
    }

    return Status::OK();
}

}  // namespace
}  // namespace mongo