/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.bpm.console.server;
import com.google.gson.Gson;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jboss.bpm.console.client.model.*;
import org.jboss.bpm.console.server.gson.GsonFactory;
import org.jboss.bpm.console.server.integration.ManagementFactory;
import org.jboss.bpm.console.server.integration.ProcessManagement;
import org.jboss.bpm.console.server.plugin.*;
import org.jboss.bpm.console.server.util.Payload2XML;
import org.jboss.bpm.console.server.util.RsComment;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.*;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLDecoder;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/**
* REST server module for accessing process related data.
*
* @author Heiko.Braun <heiko.braun@jboss.com>
*/
@Path("process")
@RsComment(
title = "Process Management",
description = "Process related data.")
public class ProcessMgmtFacade
{
private static final Log log = LogFactory.getLog(ProcessMgmtFacade.class);
private ProcessManagement processManagement;
private GraphViewerPlugin graphViewerPlugin;
private ProcessActivityPlugin activityPlugin;
private FormDispatcherPlugin formPlugin;
/**
* Lazy load the {@link org.jboss.bpm.console.server.plugin.FormDispatcherPlugin}.
* Can be null if the plugin is not available.
*/
private FormDispatcherPlugin getFormDispatcherPlugin()
{
if(null==this.formPlugin)
{
this.formPlugin = PluginMgr.load(FormDispatcherPlugin.class);
}
return this.formPlugin;
}
private ProcessManagement getProcessManagement()
{
if(null==this.processManagement)
{
ManagementFactory factory = ManagementFactory.newInstance();
this.processManagement = factory.createProcessManagement();
log.debug("Using ManagementFactory impl:" + factory.getClass().getName());
}
return this.processManagement;
}
private GraphViewerPlugin getGraphViewerPlugin()
{
if(graphViewerPlugin==null)
{
graphViewerPlugin = PluginMgr.load(
GraphViewerPlugin.class
);
}
return graphViewerPlugin;
}
private ProcessActivityPlugin getActivityPlugin()
{
if(activityPlugin==null)
{
activityPlugin = PluginMgr.load(
ProcessActivityPlugin.class
);
}
return activityPlugin;
}
@GET
@Path("definitions")
@Produces("application/json")
public Response getDefinitionsJSON()
{
List<ProcessDefinitionRef> processDefinitions = getProcessManagement().getProcessDefinitions();
return decorateProcessDefintions(processDefinitions);
}
/**
* Enriches {@link org.jboss.bpm.console.client.model.ProcessDefinitionRef} with
* form and diagram URLs if applicable.
*/
private Response decorateProcessDefintions( List<ProcessDefinitionRef> processDefinitions)
{
// decorate process form URL if plugin available
FormDispatcherPlugin formPlugin = getFormDispatcherPlugin();
if(formPlugin!=null)
{
for(ProcessDefinitionRef def : processDefinitions)
{
URL processFormURL = formPlugin.getDispatchUrl(
new FormAuthorityRef(def.getId(), FormAuthorityRef.Type.PROCESS)
);
if(processFormURL!=null)
{
def.setFormUrl(processFormURL.toExternalForm());
}
}
}
// decorate the diagram URL if available
GraphViewerPlugin graphViewer = getGraphViewerPlugin();
if(graphViewer!=null)
{
for(ProcessDefinitionRef def : processDefinitions)
{
URL diagramUrl = graphViewer.getDiagramURL(def.getId());
if(diagramUrl!=null)
{
def.setDiagramUrl(diagramUrl.toExternalForm());
}
}
}
ProcessDefinitionRefWrapper wrapper =
new ProcessDefinitionRefWrapper(processDefinitions);
return createJsonResponse(wrapper);
}
@POST
@Path("definition/{id}/remove")
@Produces("application/json")
public Response removeDefinitionsJSON(
@PathParam("id")
String definitionId
)
{
ProcessDefinitionRefWrapper wrapper =
new ProcessDefinitionRefWrapper( getProcessManagement().removeProcessDefinition(definitionId));
return createJsonResponse(wrapper);
}
@GET
@Path("definition/{id}/instances")
@Produces("application/json")
public Response getInstancesJSON(
@PathParam("id")
String definitionId
)
{
ProcessInstanceRefWrapper wrapper =
new ProcessInstanceRefWrapper(getProcessManagement().getProcessInstances(definitionId));
return createJsonResponse(wrapper);
}
@POST
@Path("definition/{id}/new_instance")
@Produces("application/json")
public Response newInstance(
@PathParam("id")
String definitionId)
{
ProcessInstanceRef instance = null;
try
{
instance = getProcessManagement().newInstance(definitionId);
return createJsonResponse(instance);
}
catch (Throwable t)
{
throw new WebApplicationException(t, 500);
}
}
@GET
@Path("instance/{id}/dataset")
@Produces("text/xml")
public Response getInstanceData(
@PathParam("id")
String instanceId
)
{
Map<String, Object> javaPayload = getProcessManagement().getInstanceData(instanceId);
Payload2XML payload2XML = new Payload2XML();
StringBuffer sb = payload2XML.convert(instanceId, javaPayload);
return Response.ok(sb.toString()).build();
}
@POST
@Path("instance/{id}/state/{next}")
@Produces("application/json")
public Response changeState(
@PathParam("id")
String executionId,
@PathParam("next")
String next)
{
ProcessInstanceRef.STATE state = ProcessInstanceRef.STATE.valueOf(next);
log.debug("Change instance (ID "+executionId+") to state " +state);
getProcessManagement().setProcessState(executionId, state);
return Response.ok().type("application/json").build();
}
@POST
@Path("instance/{id}/end/{result}")
@Produces("application/json")
public Response endInstance(
@PathParam("id")
String executionId,
@PathParam("result")
String resultValue)
{
ProcessInstanceRef.RESULT result = ProcessInstanceRef.RESULT.valueOf(resultValue);
log.debug("Change instance (ID "+executionId+") to state " + ProcessInstanceRef.STATE.ENDED);
getProcessManagement().endInstance(executionId, result);
return Response.ok().type("application/json").build();
}
@POST
@Path("instance/{id}/delete")
@Produces("application/json")
public Response deleteInstance(
@PathParam("id")
String executionId
)
{
log.debug("Delete instance (ID "+executionId+")");
getProcessManagement().deleteInstance(executionId);
return Response.ok().type("application/json").build();
}
@POST
@Path("tokens/{id}/transition")
@Produces("application/json")
public Response signalExecution(
@PathParam("id")
String id,
@QueryParam("signal")
String signalName)
{
try {
id = URLDecoder.decode(id, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
log.debug("Signal token " + id + " -> " + signalName);
if ("default transition".equals(signalName))
signalName = null;
getProcessManagement().signalExecution(id, signalName);
return Response.ok().type("application/json").build();
}
@POST
@Path("tokens/{id}/transition/default")
@Produces("application/json")
public Response signalExecutionDefault(
@PathParam("id")
String id)
{
try {
id = URLDecoder.decode(id, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
log.debug("Signal token " + id);
getProcessManagement().signalExecution(id, null);
return Response.ok().type("application/json").build();
}
@GET
@Path("definition/{id}/image")
@Produces("image/*")
public Response getProcessImage(
@Context
HttpServletRequest request,
@PathParam("id")
String id
)
{
GraphViewerPlugin plugin = getGraphViewerPlugin();
if(plugin !=null)
{
byte[] processImage = plugin.getProcessImage(id);
if(processImage!=null)
return Response.ok(processImage).type("image/png").build();
else
return Response.status(404).build();
}
throw new RuntimeException(
GraphViewerPlugin.class.getName()+ " not available."
);
}
@GET
@Path("definition/{id}/image/{instance}")
@Produces("image/*")
public Response getProcessInstanceImage(
@Context
HttpServletRequest request,
@PathParam("id")
String id,
@PathParam("instance")
String instance
)
{
ProcessActivityPlugin plugin = getActivityPlugin();
if(plugin !=null)
{
byte[] processImage = plugin.getProcessInstanceImage(id, instance);
if(processImage!=null)
return Response.ok(processImage).type("image/png").build();
else
return Response.status(404).build();
}
throw new RuntimeException(
ProcessActivityPlugin.class.getName()+ " not available."
);
}
@GET
@Path("instance/{id}/activeNodeInfo")
@Produces("application/json")
public Response getActiveNodeInfo(
@PathParam("id")
String id)
{
GraphViewerPlugin plugin = getGraphViewerPlugin();
if(plugin !=null)
{
List<ActiveNodeInfo> info = plugin.getActiveNodeInfo(id);
return createJsonResponse(info);
}
throw new RuntimeException(
GraphViewerPlugin.class.getName()+ " not available."
);
}
@GET
@Path("definition/history/{id}/nodeInfo")
@Produces("application/json")
public Response getNodeInfoForActivities(
@PathParam("id")
String id, @QueryParam("activity") String[] activities)
{
GraphViewerPlugin plugin = getGraphViewerPlugin();
if(plugin !=null)
{
List<ActiveNodeInfo> info = plugin.getNodeInfoForActivities(id, Arrays.asList(activities));
return createJsonResponse(info);
}
throw new RuntimeException(
GraphViewerPlugin.class.getName()+ " not available."
);
}
private Response createJsonResponse(Object wrapper)
{
Gson gson = GsonFactory.createInstance();
String json = gson.toJson(wrapper);
return Response.ok(json).type("application/json").build();
}
}