private void handleRequestCreate(VerticalCommand cmd)
throws IMTPException, JADESecurityException, NotFoundException, NameClashException,
ServiceException {
Object[] params = cmd.getParams();
String name = (String) params[0];
String className = (String) params[1];
Object[] args = (Object[]) params[2];
ContainerID cid = (ContainerID) params[3];
JADEPrincipal owner = (JADEPrincipal) params[4];
Credentials initialCredentials = (Credentials) params[5];
if (myLogger.isLoggable(Logger.CONFIG))
myLogger.log(
Logger.CONFIG, "Source Sink consuming command REQUEST_CREATE. Name is " + name);
MainContainer impl = myContainer.getMain();
if (impl != null) {
AID agentID = new AID(AID.createGUID(name, myContainer.getPlatformID()), AID.ISGUID);
AgentManagementSlice targetSlice = (AgentManagementSlice) getSlice(cid.getName());
if (targetSlice != null) {
try {
targetSlice.createAgent(
agentID,
className,
args,
owner,
initialCredentials,
AgentManagementSlice.CREATE_AND_START,
cmd);
} catch (IMTPException imtpe) {
// Try to get a newer slice and repeat...
targetSlice = (AgentManagementSlice) getFreshSlice(cid.getName());
targetSlice.createAgent(
agentID,
className,
args,
owner,
initialCredentials,
AgentManagementSlice.CREATE_AND_START,
cmd);
}
} else {
throw new NotFoundException("Container " + cid.getName() + " not found");
}
} else {
// Do nothing for now, but could also route the command to the main slice, thus enabling
// e.g. AMS replication
}
}
/**
* Creates a new JADE agent, running within this container,
*
* @param nickname A platform-unique nickname for the newly created agent. The agent will be given
* a FIPA compliant agent identifier using the nickname and the ID of the platform it is
* running on.
* @param className The fully qualified name of the class that implements the agent.
* @param args An object array, containing initialization parameters to pass to the new agent.
* @return A proxy object, allowing to call state-transition forcing methods on the real agent
* instance.
*/
public AgentController createNewAgent(String nickname, String className, Object[] args)
throws StaleProxyException {
if (myImpl == null || myProxy == null) {
throw new StaleProxyException();
}
AID agentID = new AID(AID.createGUID(nickname, myImpl.getPlatformID()), AID.ISGUID);
try {
myProxy.createAgent(agentID, className, args);
return new AgentControllerImpl(agentID, myProxy, myImpl);
} catch (Throwable t) {
t.printStackTrace();
throw new StaleProxyException(t);
}
}
/**
* Get a controller (i.e. a proxy) to a local agent given its local-name or GUID.
*
* @param name The local name or the GUID of the desired agent.
* @param isGuid A flag indicating whether <code>name</code> represents the local-name (<code>
* AID.ISLOCALNAME</code>) or the GUID (<code>AID.ISGUID</code>) of the desired agent.
* @throws ControllerException If any problems occur obtaining this proxy or if no such agent
* exists in the local container.
*/
public AgentController getAgent(String name, boolean isGuid) throws ControllerException {
if (myImpl == null || myProxy == null) {
throw new StaleProxyException();
}
if (!isGuid) {
name = AID.createGUID(name, myImpl.getPlatformID());
}
AID agentID = new AID(name, AID.ISGUID);
// Check that the agent exists
jade.core.Agent instance = myImpl.acquireLocalAgent(agentID);
if (instance == null) {
throw new ControllerException("Agent " + agentID.getName() + " not found.");
}
myImpl.releaseLocalAgent(agentID);
return new AgentControllerImpl(agentID, myProxy, myImpl);
}
/**
* Add an Agent to this container. Typically Agent would be some class extending Agent which was
* instantiated and configured.
*
* @param nickname A platform-unique nickname for the newly created agent. The agent will be given
* a FIPA compliant agent identifier using the nickname and the ID of the platform it is
* running on.
* @param anAgent The agent to be added to this agent container.
* @return An AgentController, allowing to call state-transition forcing methods on the real agent
* instance.
*/
public AgentController acceptNewAgent(String nickname, jade.core.Agent anAgent)
throws StaleProxyException {
if (myImpl == null || myProxy == null) {
throw new StaleProxyException();
}
AID agentID = new AID(AID.createGUID(nickname, myImpl.getPlatformID()), AID.ISGUID);
// FIXME: This call skips the security checks on the local container
try {
jade.core.NodeDescriptor nd = myImpl.getNodeDescriptor();
// The owner of the new agent is the owner of the local container.
// The new agent has NO initial credentials
myImpl.initAgent(agentID, anAgent, nd.getOwnerPrincipal(), null);
} catch (Exception e) {
throw new StaleProxyException(e);
}
return new AgentControllerImpl(agentID, myProxy, myImpl);
}
