/*
* 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
*
* 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.streams.riak.binary;
import org.apache.streams.riak.pojo.RiakConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.ConcurrentHashMap;
/**
* RiakBinaryClient maintains shared connections to riak via binary protocol.
*/
public class RiakBinaryClient {
private static final Logger LOGGER = LoggerFactory
.getLogger(RiakBinaryClient.class);
private com.basho.riak.client.api.RiakClient client;
public RiakConfiguration config;
private RiakBinaryClient(RiakConfiguration config) {
this.config = config;
try {
this.start();
} catch (Exception e) {
e.printStackTrace();
this.client = null;
}
}
private static Map<RiakConfiguration, RiakBinaryClient> INSTANCE_MAP = new ConcurrentHashMap<>();
public static RiakBinaryClient getInstance(RiakConfiguration riakConfiguration) {
if ( INSTANCE_MAP != null
&& INSTANCE_MAP.size() > 0
&& INSTANCE_MAP.containsKey(riakConfiguration)) {
return INSTANCE_MAP.get(riakConfiguration);
} else {
RiakBinaryClient instance = new RiakBinaryClient(riakConfiguration);
if( instance != null && instance.client != null ) {
INSTANCE_MAP.put(riakConfiguration, instance);
return instance;
} else {
return null;
}
}
}
public void start() throws Exception {
Objects.nonNull(config);
LOGGER.info("RiakHttpClient.start {}", config);
this.client = com.basho.riak.client.api.RiakClient.newClient(config.getPort().intValue(), config.getHosts());
Objects.nonNull(client);
Objects.nonNull(client.getRiakCluster());
assert( client.getRiakCluster().getNodes().size() > 0 );
}
public void stop() throws Exception {
this.client = null;
}
public RiakConfiguration config() {
return config;
}
public com.basho.riak.client.api.RiakClient client() {
return client;
}
}