scylla-jmx/src/main/java/org/apache/cassandra/locator/EndpointSnitchInfo.java
Amnon Heiman 0ef065ebc7 JMX-API: Fix an endless loop in EndpointSnitchInfo
This was a code that was modified from Origin, in the JMX API
initilization is done in the custructor, which mean that it would enter
an endless loop.

When initiliation in the constructor this should be used.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
2015-05-19 18:01:53 +03:00

90 lines
2.8 KiB
Java

/*
* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cassandra.locator;
import java.lang.management.ManagementFactory;
import java.net.UnknownHostException;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import com.cloudius.urchin.api.APIClient;
public class EndpointSnitchInfo implements EndpointSnitchInfoMBean {
private static final java.util.logging.Logger logger = java.util.logging.Logger
.getLogger(EndpointSnitchInfo.class.getName());
private APIClient c = new APIClient();
public void log(String str) {
System.out.println(str);
logger.info(str);
}
private static final EndpointSnitchInfo instance = new EndpointSnitchInfo();
public static EndpointSnitchInfo getInstance() {
return instance;
}
private EndpointSnitchInfo() {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
try {
mbs.registerMBean(this, new ObjectName(
"org.apache.cassandra.db:type=EndpointSnitchInfo"));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Provides the Rack name depending on the respective snitch used, given the
* host name/ip
*
* @param host
* @throws UnknownHostException
*/
public String getRack(String host) throws UnknownHostException {
log(" getRack(String host) throws UnknownHostException");
return c.getStringValue("");
}
/**
* Provides the Datacenter name depending on the respective snitch used,
* given the hostname/ip
*
* @param host
* @throws UnknownHostException
*/
public String getDatacenter(String host) throws UnknownHostException {
log(" getDatacenter(String host) throws UnknownHostException");
return c.getStringValue("");
}
/**
* Provides the snitch name of the cluster
*
* @return Snitch name
*/
public String getSnitchName() {
log(" getSnitchName()");
return c.getStringValue("");
}
}