AgentClass.java

/**
 * 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 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 siebog.agents;

import java.io.Serializable;

import org.hornetq.utils.json.JSONException;
import org.hornetq.utils.json.JSONObject;

/**
 * Description of a deployed agent.
 *
 * @author <a href="mitrovic.dejan@gmail.com">Dejan Mitrovic</a>
 */
public class AgentClass implements Serializable {
	private static final long serialVersionUID = 1L;
	public static final char SEPARATOR = '$';
	private final String module;
	private final String ejbName;
	private final String path;

	public AgentClass() {
		this("", "");
	}

	public AgentClass(String module, String ejbName) {
		this(module, ejbName, "");
	}

	public AgentClass(String module, String ejbName, String path) {
		this.module = module;
		this.ejbName = ejbName;
		this.path = path;
	}

	/**
	 * Receives module and ejbName as a single string, separated by the
	 * SEPARATOR constant.
	 *
	 * @param moduleAndEjbName
	 * @throws IllegalArgumentException
	 */
	public AgentClass(String moduleAndEjbName) {
		if (moduleAndEjbName.startsWith("{")) {
			try {
				JSONObject json = new JSONObject(moduleAndEjbName);
				// {"module":"TestAgent","ejbName":"TestAgent","path":""}
				this.module = json.getString("module");
				this.ejbName = json.getString("ejbName");
				this.path = json.has("path") ? json.getString("path") : "";
			} catch (JSONException ex) {
				throw new IllegalArgumentException(ex);
			}
		} else {
			int n = moduleAndEjbName.indexOf(SEPARATOR);
			if (n <= 0 || n >= moduleAndEjbName.length() - 1) {
				throw new IllegalArgumentException("Expected module" + SEPARATOR + "ejbName.");
			}
			this.module = moduleAndEjbName.substring(0, n);
			this.ejbName = moduleAndEjbName.substring(n + 1);
			this.path = "";
		}
	}

	public static <T extends XjafAgent> AgentClass forSiebogEjb(Class<T> clazz) {
		return new AgentClass(Agent.SIEBOG_MODULE, clazz.getSimpleName());
	}

	public String getModule() {
		return module;
	}

	public String getEjbName() {
		return ejbName;
	}

	@Override
	public String toString() {
		return module + SEPARATOR + ejbName;
	}

	public static AgentClass valueOf(String str) {
		int n = str.lastIndexOf(SEPARATOR);
		return new AgentClass(str.substring(0, n), str.substring(n + 1));
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ejbName.hashCode();
		result = prime * result + module.hashCode();
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		AgentClass other = (AgentClass) obj;
		return module.equals(other.module) && ejbName.equals(other.ejbName);
	}

	public String getPath() {
		return path;
	}
}