/*
* Copyright 2017 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jbpm.services.task.assignment.impl;
import org.jbpm.services.task.assignment.AssignmentService;
import org.jbpm.services.task.assignment.AssignmentServiceRegistry;
import org.jbpm.services.task.assignment.impl.strategy.PotentialOwnerBusynessAssignmentStrategy;
import org.kie.api.task.TaskContext;
import org.kie.api.task.model.Status;
import org.kie.api.task.model.Task;
import org.kie.api.task.model.User;
import org.kie.internal.task.api.TaskModelFactory;
import org.kie.internal.task.api.TaskModelProvider;
import org.kie.internal.task.api.assignment.Assignment;
import org.kie.internal.task.api.assignment.AssignmentStrategy;
import org.kie.internal.task.api.model.InternalTaskData;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AssignmentServiceImpl implements AssignmentService {
private static final Logger logger = LoggerFactory.getLogger(AssignmentServiceImpl.class);
private static final String ENABLED_PROPERTY = "org.jbpm.task.assignment.enabled";
private boolean enabled = Boolean.parseBoolean(System.getProperty(ENABLED_PROPERTY, "false"));
private AssignmentStrategy strategy;
private AssignmentServiceRegistry registry = AssignmentServiceRegistry.get();
private TaskModelFactory taskModelFactory = TaskModelProvider.getFactory();
public AssignmentServiceImpl() {
this.strategy = registry.getStrategy(System.getProperty("org.jbpm.task.assignment.strategy", PotentialOwnerBusynessAssignmentStrategy.IDENTIFIER));
}
public AssignmentServiceImpl(AssignmentStrategy strategy) {
this.strategy = strategy;
}
@Override
public void assignTask(Task task, TaskContext context) {
assignTask(task, context, null);
}
@Override
public void assignTask(Task task, TaskContext context, String excludedUser) {
if (!isEnabled()) {
logger.debug("AssignmentService is not enabled - to enable it set system property '" + ENABLED_PROPERTY + "' to true");
return;
}
if (task.getTaskData().getActualOwner() != null) {
logger.debug("Task {} has already been assigned to single actor {}", task.getId(), task.getTaskData().getActualOwner());
return;
}
Assignment assignTo = this.strategy.apply(task, context, excludedUser);
if (assignTo == null || assignTo.getUser() == null) {
logger.warn("Strategy {} did not return any assignment for task {}", strategy, task);
return;
}
logger.debug("Actual owner returned by strategy {} is {} for task {}", strategy, assignTo, task);
User actualOwner = taskModelFactory.newUser(assignTo.getUser());
((InternalTaskData) task.getTaskData()).setActualOwner(actualOwner);
((InternalTaskData) task.getTaskData()).setStatus(Status.Reserved);
}
@Override
public void onTaskDone(Task task, TaskContext context) {
if (!isEnabled()) {
logger.debug("AssignmentService is not enabled - to enable it set system property '" + ENABLED_PROPERTY + "' to true");
return;
}
this.strategy.taskDone(task, context);
logger.debug("Assignment strategy notified about task {} being done", task);
}
@Override
public boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
}