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drain.js
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/*
* Copyright 2015 Red Hat Inc.
*
* Licensed 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.
*/
var container = require('rhea');
var args = require('./options.js').options({
'n': { alias: 'node', default: 'examples', describe: 'name of node (e.g. queue) from which messages are received'},
'h': { alias: 'host', default: 'localhost', describe: 'dns or ip name of server where you want to connect'},
'p': { alias: 'port', default: 5672, describe: 'port to connect to'}
}).help('help').argv;
var batch = 10;
var received = 0;
container.on('message', function (context) {
console.log(JSON.stringify(context.message.body))
if (++received === batch) {
received = 0;
context.receiver.add_credit(batch);
}
});
container.on('receiver_open', function (context) {
context.receiver.flow(batch);
context.receiver.drain = true;
});
container.on('receiver_drained', function (context) {
context.receiver.detach();
context.connection.close();
});
container.connect({port: args.port, host: args.host}).open_receiver({source:{address:args.node},credit_window:0/*disable automatic credit*/});