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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.cassandra.cql3;
import java.nio.ByteBuffer;
import java.util.Map;
import org.apache.cassandra.config.CassandraRelevantProperties;
import org.apache.cassandra.cql3.statements.BatchStatement;
import org.apache.cassandra.service.ClientState;
import org.apache.cassandra.service.QueryState;
import org.apache.cassandra.transport.messages.ResultMessage;
import org.apache.cassandra.utils.MD5Digest;
/**
* Custom QueryHandler that sends custom request payloads back with the result.
* Used to facilitate testing.
* Enabled with system property {@link CassandraRelevantProperties#CUSTOM_QUERY_HANDLER_CLASS}.
*/
public class CustomPayloadMirroringQueryHandler implements QueryHandler
{
static QueryProcessor queryProcessor = QueryProcessor.instance;
public CQLStatement parse(String query, QueryState state, QueryOptions options)
{
return queryProcessor.parse(query, state, options);
}
public ResultMessage process(CQLStatement statement,
QueryState state,
QueryOptions options,
Map<String, ByteBuffer> customPayload,
long queryStartNanoTime)
{
ResultMessage result = queryProcessor.process(statement, state, options, customPayload, queryStartNanoTime);
result.setCustomPayload(customPayload);
return result;
}
public ResultMessage.Prepared prepare(String query, ClientState clientState, Map<String, ByteBuffer> customPayload)
{
ResultMessage.Prepared prepared = queryProcessor.prepare(query, clientState, customPayload);
prepared.setCustomPayload(customPayload);
return prepared;
}
public QueryProcessor.Prepared getPrepared(MD5Digest id)
{
return queryProcessor.getPrepared(id);
}
public ResultMessage processPrepared(CQLStatement statement,
QueryState state,
QueryOptions options,
Map<String, ByteBuffer> customPayload,
long queryStartNanoTime)
{
ResultMessage result = queryProcessor.processPrepared(statement, state, options, customPayload, queryStartNanoTime);
result.setCustomPayload(customPayload);
return result;
}
public ResultMessage processBatch(BatchStatement statement,
QueryState state,
BatchQueryOptions options,
Map<String, ByteBuffer> customPayload,
long queryStartNanoTime)
{
ResultMessage result = queryProcessor.processBatch(statement, state, options, customPayload, queryStartNanoTime);
result.setCustomPayload(customPayload);
return result;
}
}