package org.argeo.slc.client.ui.controllers;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.Property;
+import javax.jcr.RepositoryException;
+
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
-import org.argeo.slc.process.SlcExecution;
+import org.argeo.slc.SlcException;
+import org.argeo.slc.execution.ExecutionProcess;
+import org.argeo.slc.jcr.SlcJcrConstants;
+import org.argeo.slc.jcr.SlcJcrUtils;
+import org.argeo.slc.jcr.SlcNames;
+import org.argeo.slc.jcr.execution.JcrExecutionProcess;
import org.argeo.slc.runtime.SlcAgent;
-import org.argeo.slc.services.SlcExecutionService;
+import org.argeo.slc.runtime.SlcAgentFactory;
+/**
+ * We use a separate class (not in UI components) so that it can be a singleton
+ * in an application context.
+ */
public class ProcessController {
private final static Log log = LogFactory.getLog(ProcessController.class);
- private SlcExecutionService slcExecutionService;
+ private Map<String, SlcAgentFactory> agentFactories = new HashMap<String, SlcAgentFactory>();
- public void execute(SlcAgent agent, SlcExecution slcExecution) {
- slcExecutionService.newExecution(slcExecution);
- agent.runSlcExecution(slcExecution);
- if (log.isDebugEnabled())
- log.debug("SlcExcution " + slcExecution.getUuid()
- + " launched on Agent " + agent.toString());
+ public ExecutionProcess process(Node processNode) {
+ JcrExecutionProcess process = new JcrExecutionProcess(processNode);
+ try {
+ SlcAgent slcAgent = findAgent(processNode);
+ if (slcAgent == null)
+ throw new SlcException("Cannot find agent for " + processNode);
+ slcAgent.process(process);
+ return process;
+ } catch (Exception e) {
+ if (!process.getStatus().equals(ExecutionProcess.ERROR))
+ process.setStatus(ExecutionProcess.ERROR);
+ throw new SlcException("Cannot execute " + processNode, e);
+ }
}
- public void setSlcExecutionService(SlcExecutionService slcExecutionService) {
- this.slcExecutionService = slcExecutionService;
+ public void kill(Node processNode) {
+ JcrExecutionProcess process = new JcrExecutionProcess(processNode);
+ try {
+ SlcAgent slcAgent = findAgent(processNode);
+ if (slcAgent == null)
+ throw new SlcException("Cannot find agent for " + processNode);
+ slcAgent.kill(process);
+ } catch (Exception e) {
+ if (!process.getStatus().equals(ExecutionProcess.ERROR))
+ process.setStatus(ExecutionProcess.ERROR);
+ throw new SlcException("Cannot execute " + processNode, e);
+ }
+ }
+
+ protected SlcAgent findAgent(Node processNode) throws RepositoryException {
+ // we currently only deal with single agents
+ Node realizedFlowNode = processNode.getNode(SlcNames.SLC_FLOW);
+ NodeIterator nit = realizedFlowNode.getNodes();
+ if (nit.hasNext()) {
+ // TODO find a better way to determine which agent to use
+ // currently we check the agent of the first registered flow
+ Node firstRealizedFlow = nit.nextNode();
+ // we assume there is an nt:address
+ String firstFlowPath = firstRealizedFlow
+ .getNode(SlcNames.SLC_ADDRESS)
+ .getProperty(Property.JCR_PATH).getString();
+ Node flowNode = processNode.getSession().getNode(firstFlowPath);
+ String agentFactoryPath = SlcJcrUtils
+ .flowAgentFactoryPath(firstFlowPath);
+ if (!agentFactories.containsKey(agentFactoryPath))
+ throw new SlcException("No agent factory registered under "
+ + agentFactoryPath);
+ SlcAgentFactory agentFactory = agentFactories.get(agentFactoryPath);
+ Node agentNode = ((Node) flowNode
+ .getAncestor(SlcJcrUtils.AGENT_FACTORY_DEPTH + 1));
+ String agentUuid = agentNode.getProperty(SlcNames.SLC_UUID)
+ .getString();
+
+ // process
+ return agentFactory.getAgent(agentUuid);
+ }
+ return null;
}
+ public synchronized void register(SlcAgentFactory agentFactory,
+ Map<String, String> properties) {
+ String path = properties.get(SlcJcrConstants.PROPERTY_PATH);
+ if (log.isDebugEnabled())
+ log.debug("Agent factory registered under " + path);
+ agentFactories.put(path, agentFactory);
+ }
+
+ public synchronized void unregister(SlcAgentFactory agentFactory,
+ Map<String, String> properties) {
+ String path = properties.get(SlcJcrConstants.PROPERTY_PATH);
+ if (log.isDebugEnabled())
+ log.debug("Agent factory unregistered from " + path);
+ agentFactories.remove(path);
+ }
}