mirror of https://gitee.com/bigwinds/arangodb
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2016 ArangoDB GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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////////////////////////////////////////////////////////////////////////////////
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#include "RandomFeature.h"
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#include "Logger/Logger.h"
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#include "ProgramOptions/ProgramOptions.h"
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#include "ProgramOptions/Section.h"
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#include "Random/RandomGenerator.h"
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using namespace arangodb::application_features;
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using namespace arangodb::options;
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namespace arangodb {
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RandomFeature::RandomFeature(application_features::ApplicationServer& server)
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: ApplicationFeature(server, "Random"),
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_randomGenerator((uint32_t)RandomGenerator::RandomType::MERSENNE) {
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setOptional(false);
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startsAfter("Logger");
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}
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void RandomFeature::collectOptions(std::shared_ptr<ProgramOptions> options) {
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options->addSection("random", "Configure the random generator");
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#ifdef _WIN32
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std::unordered_set<uint32_t> generators = {1, 5};
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#else
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std::unordered_set<uint32_t> generators = {1, 2, 3, 4};
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#endif
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options->addOption(
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"--random.generator",
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"random number generator to use (1 = MERSENNE, 2 = RANDOM, "
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"3 = URANDOM, 4 = COMBINED (not for Windows), 5 = WinCrypt (Windows "
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"only)",
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new DiscreteValuesParameter<UInt32Parameter>(&_randomGenerator, generators),
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arangodb::options::makeFlags(arangodb::options::Flags::Hidden));
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}
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void RandomFeature::prepare() {
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RandomGenerator::initialize((RandomGenerator::RandomType)_randomGenerator);
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}
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} // namespace arangodb
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