| /* |
| * 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.apache.karaf.cellar.shell.handler; |
| |
| import org.apache.karaf.cellar.core.Node; |
| import org.apache.karaf.cellar.core.control.ManageHandlersCommand; |
| import org.apache.karaf.cellar.core.control.ManageHandlersResult; |
| import org.apache.karaf.cellar.shell.ClusterCommandSupport; |
| import org.apache.karaf.shell.support.table.ShellTable; |
| |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Generic cluster event handler shell command support. |
| */ |
| public abstract class HandlersSupport extends ClusterCommandSupport { |
| |
| protected Object doExecute(String handlerName, List<String> nodeIds, Boolean status) throws Exception { |
| |
| ManageHandlersCommand command = new ManageHandlersCommand(clusterManager.generateId()); |
| |
| // looking for nodes and check if exist |
| Set<Node> recipientList = new HashSet<Node>(); |
| if (nodeIds != null && !nodeIds.isEmpty()) { |
| for (String nodeId : nodeIds) { |
| Node node = clusterManager.findNodeById(nodeId); |
| if (node == null) { |
| System.err.println("Cluster node " + nodeId + " doesn't exist"); |
| } else { |
| recipientList.add(node); |
| } |
| } |
| } else { |
| if (status == null) { |
| // in case of status display, select all nodes |
| recipientList = clusterManager.listNodes(); |
| } else { |
| // in case of status change, select only the local node |
| recipientList.add(clusterManager.getNode()); |
| } |
| } |
| |
| if (recipientList.size() < 1) { |
| return null; |
| } |
| |
| command.setDestination(recipientList); |
| command.setHandlerName(handlerName); |
| command.setStatus(status); |
| |
| Map<Node, ManageHandlersResult> results = executionContext.execute(command); |
| if (results == null || results.isEmpty()) { |
| System.out.println("No result received within given timeout"); |
| } else { |
| ShellTable table = new ShellTable(); |
| table.column(" "); |
| table.column("Node"); |
| table.column("Status"); |
| table.column("Event Handler"); |
| for (Map.Entry<Node,ManageHandlersResult> handlersResultEntry : results.entrySet()) { |
| Node node = handlersResultEntry.getKey(); |
| String local = ""; |
| if (node.equals(clusterManager.getNode())) { |
| local = "x"; |
| } |
| ManageHandlersResult result = handlersResultEntry.getValue(); |
| if (result != null && result.getHandlers() != null) { |
| |
| for (Map.Entry<String,String> handlerEntry: result.getHandlers().entrySet()) { |
| String handler = handlerEntry.getKey(); |
| String s = handlerEntry.getValue(); |
| table.addRow().addContent(local, node.getId(), s, handler); |
| } |
| } |
| } |
| table.print(System.out); |
| } |
| return null; |
| } |
| |
| } |