io.axoniq.axondb.client.axon.GrpcMetaDataAwareSerializer Maven / Gradle / Ivy
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/*
* Copyright (c) 2018. AxonIQ
* 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.
*/
package io.axoniq.axondb.client.axon;
import io.axoniq.platform.MetaDataValue;
import org.axonframework.serialization.Converter;
import org.axonframework.serialization.SerializedObject;
import org.axonframework.serialization.SerializedType;
import org.axonframework.serialization.Serializer;
import org.axonframework.serialization.UnknownSerializedTypeException;
import java.util.Map;
/**
* Wrapper around standard Axon Framework serializer that can deserialize Metadata from AxonDB events.
*
*/
public class GrpcMetaDataAwareSerializer implements Serializer {
private final Serializer delegate;
private final GrpcMetaDataConverter metaDataConverter;
public GrpcMetaDataAwareSerializer(Serializer delegate) {
this.metaDataConverter = new GrpcMetaDataConverter(delegate);
this.delegate = delegate;
}
@Override
public SerializedObject serialize(Object object, Class expectedRepresentation) {
return delegate.serialize(object, expectedRepresentation);
}
@Override
public boolean canSerializeTo(Class expectedRepresentation) {
return delegate.canSerializeTo(expectedRepresentation);
}
@Override
public T deserialize(SerializedObject serializedObject) {
if (Map.class.equals(serializedObject.getContentType())) {
// this is the MetaDataMap, deserialize differently
Map metaDataMap = (Map) serializedObject.getData();
return (T) metaDataConverter.convert(metaDataMap);
}
return delegate.deserialize(serializedObject);
}
@Override
public Class classForType(SerializedType type) throws UnknownSerializedTypeException {
return delegate.classForType(type);
}
@Override
public SerializedType typeForClass(Class type) {
return delegate.typeForClass(type);
}
@Override
public Converter getConverter() {
return delegate.getConverter();
}
}