com.hazelcast.org.apache.calcite.avatica.remote.LocalProtobufService Maven / Gradle / Ivy
/*
* 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 com.hazelcast.org.apache.calcite.avatica.remote;
import java.io.IOException;
/**
* A Service implementation that performs protocol buffer serialization on request and responses
* on either side of computing a response from a request to mimic some transport to a server which
* would normally perform such computation.
*/
public class LocalProtobufService extends ProtobufService {
private final Service service;
private final ProtobufTranslation translation;
public LocalProtobufService(Service service, ProtobufTranslation translation) {
this.service = service;
this.translation = translation;
}
@Override public Response _apply(Request request) {
try {
// Serialize the request to "send to the server"
byte[] serializedRequest = translation.serializeRequest(request);
// *some transport would normally happen here*
// Fake deserializing that request somewhere else
Request request2 = translation.parseRequest(serializedRequest);
// Serialize the response from the service to "send to the client"
byte[] serializedResponse = translation.serializeResponse(request2.accept(service));
// *some transport would normally happen here*
// Deserialize the response on "the client"
return translation.parseResponse(serializedResponse);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
// End LocalProtobufService.java
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