+ 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;
+ }
+