Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* 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.
*/
package org.apache.kafka.streams.kstream.internals;
import org.apache.kafka.common.utils.Bytes;
import org.apache.kafka.streams.kstream.Aggregator;
import org.apache.kafka.streams.kstream.Initializer;
import org.apache.kafka.streams.kstream.KTable;
import org.apache.kafka.streams.kstream.Materialized;
import org.apache.kafka.streams.kstream.Merger;
import org.apache.kafka.streams.kstream.Named;
import org.apache.kafka.streams.kstream.SessionWindowedCogroupedKStream;
import org.apache.kafka.streams.kstream.SessionWindows;
import org.apache.kafka.streams.kstream.Windowed;
import org.apache.kafka.streams.kstream.WindowedSerdes;
import org.apache.kafka.streams.kstream.internals.graph.GraphNode;
import org.apache.kafka.streams.state.SessionBytesStoreSupplier;
import org.apache.kafka.streams.state.SessionStore;
import org.apache.kafka.streams.state.StoreBuilder;
import org.apache.kafka.streams.state.Stores;
import java.time.Duration;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
public class SessionWindowedCogroupedKStreamImpl extends
AbstractStream implements SessionWindowedCogroupedKStream {
private final SessionWindows sessionWindows;
private final CogroupedStreamAggregateBuilder aggregateBuilder;
private final Map, Aggregator> groupPatterns;
SessionWindowedCogroupedKStreamImpl(final SessionWindows sessionWindows,
final InternalStreamsBuilder builder,
final Set subTopologySourceNodes,
final String name,
final CogroupedStreamAggregateBuilder aggregateBuilder,
final GraphNode graphNode,
final Map, Aggregator> groupPatterns) {
super(name, null, null, subTopologySourceNodes, graphNode, builder);
//keySerde and valueSerde are null because there are many different groupStreams that they could be from
this.sessionWindows = sessionWindows;
this.aggregateBuilder = aggregateBuilder;
this.groupPatterns = groupPatterns;
}
@Override
public KTable, V> aggregate(final Initializer initializer,
final Merger sessionMerger) {
return aggregate(initializer, sessionMerger, Materialized.with(null, null));
}
@Override
public KTable, V> aggregate(final Initializer initializer,
final Merger sessionMerger,
final Materialized> materialized) {
return aggregate(initializer, sessionMerger, NamedInternal.empty(), materialized);
}
@Override
public KTable, V> aggregate(final Initializer initializer,
final Merger sessionMerger, final Named named) {
return aggregate(initializer, sessionMerger, named, Materialized.with(null, null));
}
@Override
public KTable, V> aggregate(final Initializer initializer,
final Merger sessionMerger, final Named named,
final Materialized> materialized) {
Objects.requireNonNull(initializer, "initializer can't be null");
Objects.requireNonNull(sessionMerger, "sessionMerger can't be null");
Objects.requireNonNull(materialized, "materialized can't be null");
Objects.requireNonNull(named, "named can't be null");
final MaterializedInternal> materializedInternal = new MaterializedInternal<>(
materialized,
builder,
CogroupedKStreamImpl.AGGREGATE_NAME);
return aggregateBuilder.build(
groupPatterns,
initializer,
new NamedInternal(named),
materialize(materializedInternal),
materializedInternal.keySerde() != null ?
new WindowedSerdes.SessionWindowedSerde<>(
materializedInternal.keySerde()) :
null,
materializedInternal.valueSerde(),
materializedInternal.queryableStoreName(),
sessionWindows,
sessionMerger);
}
private StoreBuilder> materialize(final MaterializedInternal> materialized) {
SessionBytesStoreSupplier supplier = (SessionBytesStoreSupplier) materialized.storeSupplier();
if (supplier == null) {
final long retentionPeriod = materialized.retention() != null ?
materialized.retention().toMillis() : sessionWindows.inactivityGap() + sessionWindows.gracePeriodMs();
if ((sessionWindows.inactivityGap() + sessionWindows.gracePeriodMs()) > retentionPeriod) {
throw new IllegalArgumentException("The retention period of the session store "
+ materialized.storeName()
+ " must be no smaller than the session inactivity gap plus the"
+ " grace period."
+ " Got gap=[" + sessionWindows.inactivityGap() + "],"
+ " grace=[" + sessionWindows.gracePeriodMs() + "],"
+ " retention=[" + retentionPeriod + "]");
}
switch (materialized.storeType()) {
case IN_MEMORY:
supplier = Stores.inMemorySessionStore(
materialized.storeName(),
Duration.ofMillis(retentionPeriod)
);
break;
case ROCKS_DB:
supplier = Stores.persistentSessionStore(
materialized.storeName(),
Duration.ofMillis(retentionPeriod)
);
break;
default:
throw new IllegalStateException("Unknown store type: " + materialized.storeType());
}
}
final StoreBuilder> builder = Stores.sessionStoreBuilder(
supplier,
materialized.keySerde(),
materialized.valueSerde()
);
if (materialized.loggingEnabled()) {
builder.withLoggingEnabled(materialized.logConfig());
} else {
builder.withLoggingDisabled();
}
if (materialized.cachingEnabled()) {
builder.withCachingEnabled();
}
return builder;
}
}
