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KAFKA-16573: Specify node and store where serdes are needed (apache#1…
…5790) Reviewers: Matthias J. Sax <matthias@confluent.io>, Bruno Cadonna <bruno@confluent.io>, Anna Sophie Blee-Goldman <ableegoldman@apache.org>
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76
streams/src/main/java/org/apache/kafka/streams/state/internals/StoreSerdeInitializer.java
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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; | ||
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| import org.apache.kafka.common.config.ConfigException; | ||
| import org.apache.kafka.common.serialization.Serde; | ||
| import org.apache.kafka.streams.errors.StreamsException; | ||
| import org.apache.kafka.streams.kstream.internals.WrappingNullableUtils; | ||
| import org.apache.kafka.streams.processor.ProcessorContext; | ||
| import org.apache.kafka.streams.processor.StateStoreContext; | ||
| import org.apache.kafka.streams.processor.TaskId; | ||
| import org.apache.kafka.streams.processor.internals.SerdeGetter; | ||
| import org.apache.kafka.streams.state.StateSerdes; | ||
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| public class StoreSerdeInitializer { | ||
| static <K, V> StateSerdes<K, V> prepareStoreSerde(final StateStoreContext context, | ||
| final String storeName, | ||
| final String changelogTopic, | ||
| final Serde<K> keySerde, | ||
| final Serde<V> valueSerde, | ||
| final PrepareFunc<V> prepareValueSerdeFunc) { | ||
| return new StateSerdes<>( | ||
| changelogTopic, | ||
| prepareSerde(WrappingNullableUtils::prepareKeySerde, storeName, keySerde, new SerdeGetter(context), true, context.taskId()), | ||
| prepareSerde(prepareValueSerdeFunc, storeName, valueSerde, new SerdeGetter(context), false, context.taskId()) | ||
| ); | ||
| } | ||
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| static <K, V> StateSerdes<K, V> prepareStoreSerde(final ProcessorContext context, | ||
| final String storeName, | ||
| final String changelogTopic, | ||
| final Serde<K> keySerde, | ||
| final Serde<V> valueSerde, | ||
| final PrepareFunc<V> prepareValueSerdeFunc) { | ||
| return new StateSerdes<>( | ||
| changelogTopic, | ||
| prepareSerde(WrappingNullableUtils::prepareKeySerde, storeName, keySerde, new SerdeGetter(context), true, context.taskId()), | ||
| prepareSerde(prepareValueSerdeFunc, storeName, valueSerde, new SerdeGetter(context), false, context.taskId()) | ||
| ); | ||
| } | ||
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| private static <T> Serde<T> prepareSerde(final PrepareFunc<T> prepare, | ||
| final String storeName, | ||
| final Serde<T> serde, | ||
| final SerdeGetter getter, | ||
| final Boolean isKey, | ||
| final TaskId taskId) { | ||
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| final String serdeType = isKey ? "key" : "value"; | ||
| try { | ||
| return prepare.prepareSerde(serde, getter); | ||
| } catch (final ConfigException | StreamsException e) { | ||
| throw new StreamsException(String.format("Failed to initialize %s serdes for store %s", serdeType, storeName), e, taskId); | ||
| } | ||
| } | ||
| } | ||
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| interface PrepareFunc<T> { | ||
| Serde<T> prepareSerde(Serde<T> serde, SerdeGetter getter); | ||
| } | ||
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