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/*
*
* 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/connection.hpp>
#include <proton/container.hpp>
#include <proton/message.hpp>
#include <proton/messaging_handler.hpp>
#include <proton/receiver_options.hpp>
#include <proton/source_options.hpp>
#include <iostream>
namespace {
// Example custom function to configure an AMQP filter,
// specifically an APACHE.ORG:SELECTOR
// (http://www.amqp.org/specification/1.0/filters)
void set_filter(proton::source_options &opts, const std::string& selector_str) {
proton::source::filter_map map;
proton::symbol filter_key("selector");
proton::value filter_value;
// The value is a specific AMQP "described type": binary string with symbolic descriptor
proton::codec::encoder enc(filter_value);
enc << proton::codec::start::described()
<< proton::symbol("apache.org:selector-filter:string")
<< selector_str
<< proton::codec::finish();
// In our case, the map has this one element
map.put(filter_key, filter_value);
opts.filters(map);
}
}
class selected_recv : public proton::messaging_handler {
std::string conn_url_;
std::string addr_;
public:
selected_recv(const std::string& u, const std::string& a) :
conn_url_(u), addr_(a) {}
void on_container_start(proton::container &c) override {
proton::source_options opts;
set_filter(opts, "colour = 'green'");
proton::connection conn = c.connect(conn_url_);
conn.open_receiver(addr_, proton::receiver_options().source(opts));
}
void on_message(proton::delivery &, proton::message &m) override {
std::cout << m.body() << std::endl;
}
};
int main(int argc, char **argv) {
try {
std::string conn_url = argc > 1 ? argv[1] : "//127.0.0.1:5672";
std::string addr = argc > 2 ? argv[2] : "examples";
selected_recv recv(conn_url, addr);
proton::container(recv).run();
return 0;
} catch (const std::exception& e) {
std::cerr << e.what() << std::endl;
}
return 1;
}
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