/*
* Copyright 2009 Joubin Houshyar
*
* 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 org.jredis.ri.alphazero;
import org.jredis.ClientRuntimeException;
import org.jredis.JRedis;
import org.jredis.ProviderException;
import org.jredis.connector.Connection;
import org.jredis.connector.ConnectionSpec;
import org.jredis.connector.FaultedConnection;
import org.jredis.connector.Connection.Property;
import org.jredis.resource.Context;
import org.jredis.resource.Resource;
import org.jredis.resource.ResourceException;
import org.jredis.ri.alphazero.support.Assert;
import org.jredis.ri.alphazero.support.Log;
/**
* [TODO: document me!]
*
* @author Joubin Houshyar (alphazero@sensesay.net)
* @version alpha.0, Apr 15, 2009
* @since alpha.0
*
*/
public abstract class SyncJRedisBase extends JRedisSupport implements Resource<JRedis> {
// ------------------------------------------------------------------------
// Properties
// ------------------------------------------------------------------------
// ------------------------------------------------------------------------
// Constructors
// ------------------------------------------------------------------------
// ------------------------------------------------------------------------
// Inner ops
// ------------------------------------------------------------------------
/**
* This extension point is really only necessary to allow this class to
* set the {@link FaultedConnection} when necessary, in course of the
* {@link SyncJRedisBase#createSyncConnection(String)}
* method operation.
*
* @param connection
*/
protected abstract void setConnection (Connection connection) ;
/**
* Creates a {@link Connection} with {@link Connection.Modality#Synchronous} semantics
* suitable for use by synchronous (blocking) JRedis clients.
*
* @param connSpec connection's specification
* @param redisVersion redis protocol compliance
* @return
*/
protected Connection createSyncConnection(ConnectionSpec connSpec){
Connection.Factory cfact = (Connection.Factory) connSpec.getConnectionProperty(Property.CONNECTION_FACTORY);
Connection conn = null;
try {
conn = Assert.notNull(cfact.newConnection(connSpec), "connection delegate", ClientRuntimeException.class);
}
catch (ProviderException e) {
Log.bug("Couldn't create the handler delegate. => " + e.getLocalizedMessage());
throw e;
}
catch (ClientRuntimeException e) {
String msg = String.format("%s\nMake sure your server is running.", e.getMessage());
Log.error ("Error creating connection -> " + e.getLocalizedMessage());
setConnection(new FaultedConnection(connSpec, msg));
}
Log.debug ("%s: Using %s", this.getClass().getSimpleName(), conn);
return conn;
}
// ------------------------------------------------------------------------
// Interface
// =========================================================== Resource<T>
/*
* Provides basic Resource support without any state management. Extensions
* that use context in a simply manner can rely on these methods. Others may
* wish to override.
*/
// ------------------------------------------------------------------------
private Context context;
@Override
public final Context getContext() throws ResourceException {
return context;
}
@Override
public final void setContext(Context context) throws ResourceException {
this.context = context;
}
}