/*
* Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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 org.wso2.carbon.mediation.startup;
import org.apache.axiom.om.OMElement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.SynapseConstants;
import org.apache.synapse.task.TaskDescription;
import org.apache.synapse.task.TaskDescriptionSerializer;
import org.apache.synapse.task.service.TaskManagementService;
import org.wso2.carbon.mediation.initializer.AbstractServiceBusAdmin;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.locks.Lock;
/**
* Provide Task based Startup management
*/
public class StartupAdminService extends AbstractServiceBusAdmin implements TaskManagementService {
private static Log log = LogFactory.getLog(StartupAdminService.class);
public StartupAdminService() {
}
public void addTaskDescription(TaskDescription taskDescription) {
final Lock lock = getLock();
try {
lock.lock();
validateTaskDescription(taskDescription);
OMElement taskElement = TaskDescriptionSerializer
.serializeTaskDescription(SynapseConstants.SYNAPSE_OMNAMESPACE, taskDescription);
validateTaskElement(taskElement);
StartupUtils.addStartup(taskElement, getSynapseConfiguration(), getSynapseEnvironment());
} finally {
lock.unlock();
}
}
public void deleteTaskDescription(String taskName) {
final Lock lock = getLock();
try {
lock.lock();
validateName(taskName);
StartupUtils.deleteStartup(taskName, getSynapseConfiguration());
} finally {
lock.unlock();
}
}
public void editTaskDescription(TaskDescription taskDescription) {
final Lock lock = getLock();
try {
lock.lock();
validateTaskDescription(taskDescription);
OMElement taskElement = TaskDescriptionSerializer
.serializeTaskDescription(SynapseConstants.SYNAPSE_OMNAMESPACE, taskDescription);
validateTaskElement(taskElement);
StartupUtils.updateStartup(taskDescription.getName(), taskElement, getSynapseConfiguration(),
getSynapseEnvironment());
} finally {
lock.unlock();
}
}
public List<TaskDescription> getAllTaskDescriptions() {
final Lock lock = getLock();
try {
lock.lock();
List<TaskDescription> taskDescriptions = new ArrayList<TaskDescription>();
Iterator<TaskDescription> iterator = StartupUtils.getAllTaskDescriptions(getSynapseEnvironment());
while (iterator.hasNext()) {
TaskDescription taskDescription = iterator.next();
if (taskDescription != null) {
taskDescriptions.add(taskDescription);
}
}
if (log.isDebugEnabled()) {
log.debug("All available Task based Startup " + taskDescriptions);
}
return taskDescriptions;
} finally {
lock.unlock();
}
}
public TaskDescription getTaskDescription(String taskName) {
final Lock lock = getLock();
try {
lock.lock();
validateName(taskName);
return StartupUtils.getTaskDescription(taskName, getSynapseEnvironment());
} finally {
lock.unlock();
}
}
public boolean isContains(String taskName) {
final Lock lock = getLock();
try {
lock.lock();
validateName(taskName);
return StartupUtils.isContains(taskName, getSynapseEnvironment());
} finally {
lock.unlock();
}
}
public List<String> getPropertyNames(String taskClass) {
final Lock lock = getLock();
List<String> names = new ArrayList<String>();
try {
lock.lock();
Class clazz = Class.forName(taskClass.trim());
Method[] methods = clazz.getMethods();
Field[] fields = clazz.getDeclaredFields();
for (Method method : methods) {
if (method == null) {
continue;
}
String methodName = method.getName();
if (methodName == null) {
continue;
}
if (methodName.startsWith("set") && !"setTraceState".equals(methodName)) {
for (Field field : fields) {
if (field.getName().equalsIgnoreCase(methodName.substring(3))) {
names.add(field.getName());
break;
}
}
}
}
} catch (ClassNotFoundException e) {
handleException("Class " + taskClass + " not found in the path", e);
} finally {
lock.unlock();
}
if (log.isDebugEnabled()) {
log.debug("Task class '" + taskClass + "' contains property Names : " + names);
}
return names;
}
private static void validateTaskDescription(TaskDescription description) {
if (description == null) {
handleException("Task Description can not be found.");
}
}
private static void validateTaskElement(OMElement taskElement) {
if (taskElement == null) {
handleException("Task Description OMElement can not be found.");
}
}
private static void validateName(String name) {
if (name == null || "".equals(name)) {
handleException("Name is null or empty");
}
}
private static void handleException(String msg) {
log.error(msg);
throw new IllegalArgumentException(msg);
}
private static void handleException(String msg, Throwable throwable) {
log.error(msg, throwable);
throw new RuntimeException(msg);
}
}