ServerInfo.java

/*
 * Copyright 2002-2011 the original author or authors.
 *
 * 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.springframework.data.document.couchdb.monitor;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Map;

import org.springframework.jmx.export.annotation.ManagedOperation;
import org.springframework.jmx.export.annotation.ManagedResource;
import org.springframework.web.client.RestTemplate;

/**
 * Expose basic server information via JMX
 *
 * @author Mark Pollack
 */
@ManagedResource(description = "Server Information")
public class ServerInfo extends AbstractMonitor {


  public ServerInfo(String databaseUrl) {
    this.databaseUrl = databaseUrl;
    this.restTemplate = new RestTemplate();
  }


  @ManagedOperation(description = "Server host name")
  public String getHostName() throws UnknownHostException {
    return InetAddress.getLocalHost().getHostName();
  }


  @ManagedOperation(description = "CouchDB Server Version")
  public String getVersion() {
    return (String) getRoot().get("version");
  }

  @ManagedOperation(description = "Message of the day")
  public String getMotd() {
    return (String) getRoot().get("greeting");
  }

  public Map getRoot() {
    Map map = restTemplate.getForObject(getDatabaseUrl(), Map.class);
    return map;
  }

}