package org.apache.directmemory.server.commons;
/*
* 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.
*/
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import java.io.IOException;
import java.io.InputStream;
/**
* @author Olivier Lamy
*/
public class DirectMemoryParser
{
private JsonFactory jsonFactory;
private static DirectMemoryParser INSTANCE = new DirectMemoryParser();
private DirectMemoryParser()
{
this.jsonFactory = new JsonFactory();
}
public static DirectMemoryParser instance()
{
return INSTANCE;
}
public DirectMemoryRequest buildRequest( InputStream inputStream )
throws DirectMemoryException
{
try
{
JsonParser jp = this.jsonFactory.createJsonParser( inputStream );
DirectMemoryRequest rq = new DirectMemoryRequest();
JsonToken jsonToken = jp.nextToken();
while ( jsonToken != JsonToken.END_OBJECT && jsonToken != null )
{
String fieldName = jp.getCurrentName();
if ( DirectMemoryConstants.KEY_FIELD_NAME.equals( fieldName ) )
{
rq.setKey( jp.getText() );
}
if ( DirectMemoryConstants.PUT_FIELD_NAME.equals( fieldName ) )
{
rq.setUpdate( jp.getValueAsBoolean() );
}
if ( DirectMemoryConstants.EXPIRES_IN_FIELD_NAME.equals( fieldName ) )
{
rq.setExpiresIn( jp.getValueAsInt() );
}
if ( DirectMemoryConstants.CACHE_CONTENT_FIELD_NAME.equals( fieldName ) )
{
// binaryValue need to go to nextToken
jp.nextToken();
rq.setCacheContent( jp.getBinaryValue() );
}
jsonToken = jp.nextToken();
}
jp.close();
return rq;
}
catch ( JsonParseException e )
{
throw new DirectMemoryException( e.getMessage(), e );
}
catch ( IOException e )
{
throw new DirectMemoryException( e.getMessage(), e );
}
}
public DirectMemoryResponse buildResponse( InputStream inputStream )
throws DirectMemoryException
{
try
{
JsonParser jp = this.jsonFactory.createJsonParser( inputStream );
DirectMemoryResponse rs = new DirectMemoryResponse();
JsonToken jsonToken = jp.nextToken();
while ( jsonToken != JsonToken.END_OBJECT && jsonToken != null)
{
String fieldName = jp.getCurrentName();
if ( DirectMemoryConstants.FOUND_FIELD_NAME.equals( fieldName ) )
{
rs.setFound( jp.getValueAsBoolean() );
}
if ( DirectMemoryConstants.KEY_FIELD_NAME.equals( fieldName ) )
{
rs.setKey( jp.getText() );
}
if ( DirectMemoryConstants.CACHE_CONTENT_FIELD_NAME.equals( fieldName ) )
{
// binaryValue need to go to nextToken
jp.nextToken();
rs.setCacheContent( jp.getBinaryValue() );
}
jsonToken = jp.nextToken();
}
return rs;
}
catch ( JsonParseException e )
{
throw new DirectMemoryException( e.getMessage(), e );
}
catch ( IOException e )
{
throw new DirectMemoryException( e.getMessage(), e );
}
}
}