/*

* Licensed to the Apache Software Foundation (ASF) under one or more

* contributor license agreements. See the NOTICE file distributed with

* this work for additional information regarding copyright ownership.

* The ASF licenses this file to You under the Apache License, Version 2.0

* (the "License"); you may not use this file except in compliance with

* the License. You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

#include "ClientProxyMembershipIDFactory.hpp"

#include <algorithm>

#include <random>

#include <boost/asio.hpp>

#include <boost/process/environment.hpp>

#include "ClientProxyMembershipID.hpp"

#include "util/Log.hpp"

namespace bip = boost::asio::ip;

namespace apache {

namespace geode {

namespace client {

ClientProxyMembershipIDFactory::ClientProxyMembershipIDFactory(

std::string dsName)

: dsName_(std::move(dsName)) {

static const auto alphabet = std::string(

"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_");

static const auto numChars = static_cast<int>(alphabet.size()) - 2;

std::random_device rd;

std::default_random_engine rng(rd());

std::uniform_int_distribution<> dist(0, numChars);

randString_.reserve(7 + 10 + 15);

randString_.append("Native_");

std::generate_n(std::back_inserter(randString_), 10,

[&]() { return alphabet[dist(rng)]; });

auto pid = boost::this_process::get_id();

randString_.append(std::to_string(pid));

LOGINFO("Using %s as random data for ClientProxyMembershipID",

randString_.c_str());

}

std::unique_ptr<ClientProxyMembershipID> ClientProxyMembershipIDFactory::create(

const std::string& durableClientId,

const std::chrono::seconds durableClntTimeOut) {

auto hostname = bip::host_name();

boost::asio::io_service svc;

bip::tcp::resolver resolver{svc};

auto results = resolver.resolve(hostname, "0");

auto address = results->endpoint().address();

return std::unique_ptr<ClientProxyMembershipID>(

new ClientProxyMembershipID(dsName_, randString_, hostname, address, 0,

durableClientId, durableClntTimeOut));

}

} // namespace client

} // namespace geode

} // namespace apache