Merge JCR, OSGi and Ant support into SLC Core

[gpl/argeo-slc.git] / org.argeo.slc.core / src / org / argeo / slc / jcr / execution / JcrAgent.java

diff --git a/org.argeo.slc.core/src/org/argeo/slc/jcr/execution/JcrAgent.java b/org.argeo.slc.core/src/org/argeo/slc/jcr/execution/JcrAgent.java
new file mode 100644 (file)
index 0000000..1c00b47
--- /dev/null
+++ b/org.argeo.slc.core/src/org/argeo/slc/jcr/execution/JcrAgent.java
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * 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.argeo.slc.jcr.execution;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.UUID;
+
+import javax.jcr.Node;
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+
+import org.argeo.jcr.JcrUtils;
+import org.argeo.slc.SlcException;
+import org.argeo.slc.core.execution.DefaultAgent;
+import org.argeo.slc.core.execution.ProcessThread;
+import org.argeo.slc.execution.ExecutionModulesManager;
+import org.argeo.slc.execution.ExecutionProcess;
+import org.argeo.slc.jcr.SlcJcrConstants;
+import org.argeo.slc.jcr.SlcNames;
+import org.argeo.slc.jcr.SlcTypes;
+
+/** SLC VM agent synchronizing with a JCR repository. */
+public class JcrAgent extends DefaultAgent implements SlcNames {
+       // final static String ROLE_REMOTE = "ROLE_REMOTE";
+       final static String NODE_REPO_URI = "argeo.node.repo.uri";
+
+       private Repository repository;
+
+       private String agentNodeName = "default";
+
+       /*
+        * LIFECYCLE
+        */
+       protected String initAgentUuid() {
+               Session session = null;
+               try {
+                       session = repository.login();
+
+                       String agentFactoryPath = getAgentFactoryPath();
+                       Node vmAgentFactoryNode = JcrUtils.mkdirsSafe(session,
+                                       agentFactoryPath, SlcTypes.SLC_AGENT_FACTORY);
+                       if (!vmAgentFactoryNode.hasNode(agentNodeName)) {
+                               String uuid = UUID.randomUUID().toString();
+                               Node agentNode = vmAgentFactoryNode.addNode(agentNodeName,
+                                               SlcTypes.SLC_AGENT);
+                               agentNode.setProperty(SLC_UUID, uuid);
+                       }
+                       session.save();
+                       return vmAgentFactoryNode.getNode(agentNodeName)
+                                       .getProperty(SLC_UUID).getString();
+               } catch (RepositoryException e) {
+                       JcrUtils.discardQuietly(session);
+                       throw new SlcException("Cannot find JCR agent UUID", e);
+               } finally {
+                       JcrUtils.logoutQuietly(session);
+               }
+       }
+
+       @Override
+       public void destroy() {
+               super.destroy();
+       }
+
+       /*
+        * SLC AGENT
+        */
+       @Override
+       protected ProcessThread createProcessThread(
+                       ThreadGroup processesThreadGroup,
+                       ExecutionModulesManager modulesManager, ExecutionProcess process) {
+               if (process instanceof JcrExecutionProcess)
+                       return new JcrProcessThread(processesThreadGroup, modulesManager,
+                                       (JcrExecutionProcess) process);
+               else
+                       return super.createProcessThread(processesThreadGroup,
+                                       modulesManager, process);
+       }
+
+       /*
+        * UTILITIES
+        */
+       public String getNodePath() {
+               return getAgentFactoryPath() + '/' + getAgentNodeName();
+       }
+
+       public String getAgentFactoryPath() {
+               try {
+                       Boolean isRemote = System.getProperty(NODE_REPO_URI) != null;
+                       String agentFactoryPath;
+                       if (isRemote) {
+                               InetAddress localhost = InetAddress.getLocalHost();
+                               agentFactoryPath = SlcJcrConstants.AGENTS_BASE_PATH + "/"
+                                               + localhost.getCanonicalHostName();
+
+                               if (agentFactoryPath
+                                               .equals(SlcJcrConstants.VM_AGENT_FACTORY_PATH))
+                                       throw new SlcException("Unsupported hostname "
+                                                       + localhost.getCanonicalHostName());
+                       } else {// local
+                               agentFactoryPath = SlcJcrConstants.VM_AGENT_FACTORY_PATH;
+                       }
+                       return agentFactoryPath;
+               } catch (UnknownHostException e) {
+                       throw new SlcException("Cannot find agent factory base path", e);
+               }
+       }
+
+       /*
+        * BEAN
+        */
+       public String getAgentNodeName() {
+               return agentNodeName;
+       }
+
+       public void setRepository(Repository repository) {
+               this.repository = repository;
+       }
+
+       public void setAgentNodeName(String agentNodeName) {
+               this.agentNodeName = agentNodeName;
+       }
+}