/*
* 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.examples;
import org.jredis.JRedis;
import org.jredis.RedisException;
import org.jredis.connector.ConnectionSpec;
import org.jredis.ri.alphazero.JRedisClient;
import org.jredis.ri.alphazero.JRedisPipelineService;
import org.jredis.ri.alphazero.connection.DefaultConnectionSpec;
import org.jredis.ri.alphazero.support.Log;
import static org.jredis.ri.alphazero.support.DefaultCodec.*;
/**
* JRedisPipelineService provides blocking synchronous semantics backed by a pipeline and is suitable
* for concurrent usages with a single (socket) connection to the server. There is really nothing
* different here than using a vanial {@link JRedisClient}.
*
* @author Joubin Houshyar (alphazero@sensesay.net)
* @version alpha.0, Nov 6, 2009
* @since alpha.0
*
*/
public class UsingJRedisPipelineService {
final JRedis jredis;
private UsingJRedisPipelineService() {
// same as usual.
ConnectionSpec spec = DefaultConnectionSpec.newSpec();
spec.setDatabase(11).setCredentials("jredis".getBytes());
// only need to use the specific class.
jredis = new JRedisPipelineService(spec);
}
private void run () {
try {
jredis.ping();
basicStuff();
elicitErrors();
}
catch (RedisException e) {
e.printStackTrace();
}
// Use the connection concurrently
final int wcnt = 10;
final int opcnt = 20000;
final Thread[] workers = new Thread[wcnt];
final JRedis client = jredis;
for(int i=0; i<workers.length; i++) {
final int j = i;
workers[i] = new Thread(new Runnable() {
@Override
public void run() {
final String wkey = "foo" + j;
String wvalue = null;
for(int i=0; i< opcnt; i++) {
try {
client.incr(wkey);
wvalue = toStr(client.get(wkey));
} catch (RedisException e) {
e.printStackTrace();
break;
}
}
System.out.format("%s => %s\n", wkey, wvalue);
}
});
workers[i].start();
}
for(Thread t : workers){
try {
t.join();
}
catch (InterruptedException e) {
e.printStackTrace();
}
}
//
jredis.quit();
}
private void elicitErrors () {
String key = "foo" ;
try {
jredis.set(key, "bar");
jredis.sadd(key, "foobar");
}
catch (RedisException e) {
Log.log("Expected elicited error: %s", e.getMessage());
}
}
private void basicStuff () throws RedisException {
jredis.flushdb();
String key = "foo" ;
jredis.set(key, "bar");
String value = toStr(jredis.get(key));
System.out.format("%s => %s\n", key, value);
}
public static void main (String[] args) {
(new UsingJRedisPipelineService()).run();
}
}