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Ability to override deserializer in Kafka consumer
- When binding the consumer, the kafka consumer should not be set to use `ByteArrayDeserializer` for both key/value deserializer. Instead, they need to be used as the default values. Any extended consumer properties for key/value deserializer should override this default deserializer. - Add test This resolves #55 Add tests for custom/native serialization - Test using built-in serialization without using kafka native serialization (ie. both the serializer/de-serializer are set to use ByteArraySe/Deserializer) - Test using custom serializer by explicitly setting value.deserializer for both Kafka producer/consumer properties - Test avro message conversion and Kafka Avro Serializer using Confluent Schema Registry - Given pre-released registry versions have some bugs that blocks the testing and `3.0.1` requires Kafka 0.10, this test is only in Kafka .10 binder Update Schema based custom serializer/de-serializer tests Fix import Handle unbind during tests appropriately
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85 changes: 85 additions & 0 deletions
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...er-kafka-0.10-test/src/test/java/org/springframework/cloud/stream/binder/kafka/User1.java
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| /* | ||
| * Copyright 2016 the original author or authors. | ||
| * | ||
| * Licensed 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.springframework.cloud.stream.binder.kafka; | ||
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| import java.io.IOException; | ||
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| import org.apache.avro.Schema; | ||
| import org.apache.avro.reflect.Nullable; | ||
| import org.apache.avro.specific.SpecificRecordBase; | ||
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| import org.springframework.core.io.ClassPathResource; | ||
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| /** | ||
| * @author Marius Bogoevici | ||
| * @author Ilayaperumal Gopinathan | ||
| */ | ||
| public class User1 extends SpecificRecordBase { | ||
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| @Nullable | ||
| private String name; | ||
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| @Nullable | ||
| private String favoriteColor; | ||
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| public String getName() { | ||
| return this.name; | ||
| } | ||
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| public void setName(String name) { | ||
| this.name = name; | ||
| } | ||
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| public String getFavoriteColor() { | ||
| return this.favoriteColor; | ||
| } | ||
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| public void setFavoriteColor(String favoriteColor) { | ||
| this.favoriteColor = favoriteColor; | ||
| } | ||
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| @Override | ||
| public Schema getSchema() { | ||
| try { | ||
| return new Schema.Parser().parse(new ClassPathResource("schemas/users_v1.schema").getInputStream()); | ||
| } | ||
| catch (IOException e) { | ||
| throw new IllegalStateException(e); | ||
| } | ||
| } | ||
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| @Override | ||
| public Object get(int i) { | ||
| if (i == 0) { | ||
| return getName().toString(); | ||
| } | ||
| if (i == 1) { | ||
| return getFavoriteColor().toString(); | ||
| } | ||
| return null; | ||
| } | ||
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| @Override | ||
| public void put(int i, Object o) { | ||
| if (i == 0) { | ||
| setName((String) o); | ||
| } | ||
| if (i == 1) { | ||
| setFavoriteColor((String) o); | ||
| } | ||
| } | ||
| } |
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spring-cloud-stream-binder-kafka-0.10-test/src/test/resources/schemas/users_v1.schema
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| {"namespace": "org.springframework.cloud.stream.binder.kafka", | ||
| "type": "record", | ||
| "name": "User1", | ||
| "fields": [ | ||
| {"name": "name", "type": "string"}, | ||
| {"name": "favoriteColor", "type": "string"} | ||
| ] | ||
| } |
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