org.apache.kafka.streams.kstream.internals.KStreamBranch Maven / Gradle / Ivy
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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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kafka.streams.kstream.internals;
import org.apache.kafka.streams.kstream.Predicate;
import org.apache.kafka.streams.processor.AbstractProcessor;
import org.apache.kafka.streams.processor.Processor;
import org.apache.kafka.streams.processor.ProcessorSupplier;
import org.apache.kafka.streams.processor.To;
class KStreamBranch implements ProcessorSupplier {
private final Predicate[] predicates;
private final String[] childNodes;
KStreamBranch(final Predicate[] predicates,
final String[] childNodes) {
this.predicates = predicates;
this.childNodes = childNodes;
}
@Override
public Processor get() {
return new KStreamBranchProcessor();
}
private class KStreamBranchProcessor extends AbstractProcessor {
@Override
public void process(final K key, final V value) {
for (int i = 0; i < predicates.length; i++) {
if (predicates[i].test(key, value)) {
// use forward with child here and then break the loop
// so that no record is going to be piped to multiple streams
context().forward(key, value, To.child(childNodes[i]));
break;
}
}
}
}
}