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/**
* This file is part of the CRISTAL-iSE kernel.
* Copyright (c) 2001-2014 The CRISTAL Consortium. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* http://www.fsf.org/licensing/licenses/lgpl.html
*/
package com.c2kernel.entity.agent;
import com.c2kernel.common.CannotManageException;
import com.c2kernel.common.ObjectCannotBeUpdated;
import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.common.SystemKey;
import com.c2kernel.entity.AgentOperations;
import com.c2kernel.entity.ItemImplementation;
import com.c2kernel.lifecycle.instance.predefined.PredefinedStepContainer;
import com.c2kernel.lifecycle.instance.predefined.agent.AgentPredefinedStepContainer;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.ItemPath;
import com.c2kernel.lookup.RolePath;
import com.c2kernel.process.Gateway;
import com.c2kernel.utils.Logger;
/**
* Implementation of Agent, though called from the CORBA implementation ActiveEntity.
*
* <p>The Agent is an extension of the Item that can execute Jobs, and in doing so
* change the state of Item workflows, submit data to them in the form of Outcomes
* and run any scripts associated with those activities. In this server object,
* none of this specific Agent work is performed - it all must be done using the
* client API. The server implementation only manages the Agent's data: its roles
* and persistent Jobs.
*/
public class AgentImplementation extends ItemImplementation implements
AgentOperations {
private JobList currentJobs;
private final AgentPath mAgentPath;
public AgentImplementation(AgentPath path) {
super(path);
mAgentPath = path;
}
/**
* Updates an Agent's list of Jobs relating to a particular activity. Only
* Activities that are assigned to a Role that is flagged to push Jobs do this.
*
*/
@Override
public synchronized void refreshJobList(SystemKey sysKey, String stepPath, String newJobs) {
try {
ItemPath itemPath = new ItemPath(sysKey);
JobArrayList newJobList = (JobArrayList)Gateway.getMarshaller().unmarshall(newJobs);
// get our joblist
if (currentJobs == null)
currentJobs = new JobList( itemPath, null);
// remove old jobs for this item
currentJobs.removeJobsForStep( itemPath, stepPath );
// merge new jobs in
for (Object name : newJobList.list) {
Job newJob = (Job)name;
Logger.msg(6, "Adding job for "+newJob.getItemPath()+"/"+newJob.getStepPath()+":"+newJob.getTransition().getId());
currentJobs.addJob(newJob);
}
} catch (Throwable ex) {
Logger.error("Could not refresh job list.");
Logger.error(ex);
}
}
/** Adds the given Role to this Agent. Called from the SetAgentRoles
* predefined step.
*
* @param roleName - the new Role to add
* @throws CannotManageException When the process has no lookup manager
* @throws ObjectNotFoundException
*
*/
@Override
public void addRole(String roleName) throws CannotManageException, ObjectNotFoundException {
RolePath newRole = Gateway.getLookup().getRolePath(roleName);
try {
Gateway.getLookupManager().addRole(mAgentPath, newRole);
} catch (ObjectCannotBeUpdated ex) {
throw new CannotManageException("Could not update role");
}
}
/**
* Removes the given Role from this Agent. Called by the SetAgentRoles
* predefined step.
*
* @param roleName
*/
@Override
public void removeRole(String roleName) throws CannotManageException, ObjectNotFoundException {
RolePath rolePath = Gateway.getLookup().getRolePath(roleName);
try {
Gateway.getLookupManager().removeRole(mAgentPath, rolePath);
} catch (ObjectCannotBeUpdated ex) {
throw new CannotManageException("Could not update role");
}
}
/**
* Agents have their own predefined step containers. They contain the standard
* predefined steps, plus special Agent ones related to Agent management and
* instantiation.
*
* @see com.c2kernel.lifecycle.instance.predefined.agent.AgentPredefinedStepContainer
*/
@Override
protected PredefinedStepContainer getNewPredefStepContainer() {
return new AgentPredefinedStepContainer();
}
}
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