org.apache.kafka.streams.kstream.internals.graph.StreamSourceNode 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,
* 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.
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package org.apache.kafka.streams.kstream.internals.graph;
import org.apache.kafka.common.serialization.Serde;
import org.apache.kafka.streams.kstream.internals.ConsumedInternal;
import org.apache.kafka.streams.processor.internals.InternalTopologyBuilder;
import java.util.ArrayList;
import java.util.Collection;
import java.util.regex.Pattern;
public class StreamSourceNode extends StreamsGraphNode {
private Collection topicNames;
private Pattern topicPattern;
private final ConsumedInternal consumedInternal;
public StreamSourceNode(final String nodeName,
final Collection topicNames,
final ConsumedInternal consumedInternal) {
super(nodeName);
this.topicNames = topicNames;
this.consumedInternal = consumedInternal;
}
public StreamSourceNode(final String nodeName,
final Pattern topicPattern,
final ConsumedInternal consumedInternal) {
super(nodeName);
this.topicPattern = topicPattern;
this.consumedInternal = consumedInternal;
}
public Collection topicNames() {
return new ArrayList<>(topicNames);
}
public Pattern topicPattern() {
return topicPattern;
}
public ConsumedInternal consumedInternal() {
return consumedInternal;
}
public Serde keySerde() {
return consumedInternal.keySerde();
}
public Serde valueSerde() {
return consumedInternal.valueSerde();
}
@Override
public String toString() {
return "StreamSourceNode{" +
"topicNames=" + topicNames +
", topicPattern=" + topicPattern +
", consumedInternal=" + consumedInternal +
"} " + super.toString();
}
@Override
public void writeToTopology(final InternalTopologyBuilder topologyBuilder) {
if (topicPattern != null) {
topologyBuilder.addSource(consumedInternal.offsetResetPolicy(),
nodeName(),
consumedInternal.timestampExtractor(),
consumedInternal.keyDeserializer(),
consumedInternal.valueDeserializer(),
topicPattern);
} else {
topologyBuilder.addSource(consumedInternal.offsetResetPolicy(),
nodeName(),
consumedInternal.timestampExtractor(),
consumedInternal.keyDeserializer(),
consumedInternal.valueDeserializer(),
topicNames.toArray(new String[topicNames.size()]));
}
}
}