proton-c/bindings/cpp/src/id_generator.cpp

/*
 * 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 "proton/id_generator.hpp"
#include <sstream>

namespace proton {

id_generator::id_generator(const std::string& s) : prefix_(s), count_(0) {}

std::string id_generator::next() {
    // TODO aconway 2016-01-19: more efficient conversion, fixed buffer.
    std::ostringstream o;
    o << prefix_ << std::hex << ++count_;
    return o.str();
}

}