org.apache.kafka.streams.state.internals.KeyValueStoreBuilder 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.
*/
package org.apache.kafka.streams.state.internals;
import org.apache.kafka.common.serialization.Serde;
import org.apache.kafka.common.utils.Bytes;
import org.apache.kafka.common.utils.Time;
import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
import org.apache.kafka.streams.state.KeyValueStore;
import java.util.Objects;
public class KeyValueStoreBuilder extends AbstractStoreBuilder> {
private final KeyValueBytesStoreSupplier storeSupplier;
public KeyValueStoreBuilder(final KeyValueBytesStoreSupplier storeSupplier,
final Serde keySerde,
final Serde valueSerde,
final Time time) {
super(storeSupplier.name(), keySerde, valueSerde, time);
Objects.requireNonNull(storeSupplier, "storeSupplier can't be null");
Objects.requireNonNull(storeSupplier.metricsScope(), "storeSupplier's metricsScope can't be null");
this.storeSupplier = storeSupplier;
}
@Override
public KeyValueStore build() {
return new MeteredKeyValueStore<>(
maybeWrapCaching(maybeWrapLogging(storeSupplier.get())),
storeSupplier.metricsScope(),
time,
keySerde,
valueSerde);
}
private KeyValueStore maybeWrapCaching(final KeyValueStore inner) {
if (!enableCaching) {
return inner;
}
return new CachingKeyValueStore(inner, false);
}
private KeyValueStore maybeWrapLogging(final KeyValueStore inner) {
if (!enableLogging) {
return inner;
}
return new ChangeLoggingKeyValueBytesStore(inner);
}
}