resources.asyncSplitsentence.js Maven / Gradle / Ivy
/*
* 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.
*/
/**
* Example for async bolt. Receives sentence and breaks it into words.
*
*/
var storm = require('./storm');
var BasicBolt = storm.BasicBolt;
function SplitSentenceBolt() {
BasicBolt.call(this);
};
SplitSentenceBolt.prototype = Object.create(BasicBolt.prototype);
SplitSentenceBolt.prototype.constructor = SplitSentenceBolt;
SplitSentenceBolt.prototype.process = function(tup, done) {
var self = this;
// Here setTimeout is not really needed, we use it to demonstrate asynchronous code in the process method:
setTimeout(function() {
var words = tup.values[0].split(" ");
words.forEach(function(word) {
self.emit({tuple: [word], anchorTupleId: tup.id}, function(taskIds) {
self.log(word + ' sent to task ids - ' + taskIds);
});
});
done();
}, 5000)
}
new SplitSentenceBolt().run();