/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* 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.activiti.rest.api.process;
import java.util.List;
import java.util.Map;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.history.HistoricActivityInstance;
import org.activiti.engine.history.HistoricDetail;
import org.activiti.engine.history.HistoricProcessInstance;
import org.activiti.engine.history.HistoricTaskInstance;
import org.activiti.engine.history.HistoricVariableUpdate;
import org.activiti.rest.api.ActivitiUtil;
import org.activiti.rest.api.RequestUtil;
import org.activiti.rest.api.SecuredResource;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.node.ArrayNode;
import org.codehaus.jackson.node.ObjectNode;
import org.restlet.resource.Delete;
import org.restlet.resource.Get;
/**
* @author Tijs Rademakers
*/
public class ProcessInstanceResource extends SecuredResource {
@Get
public ObjectNode getProcessInstance() {
if(authenticate() == false) return null;
String processInstanceId = (String) getRequest().getAttributes().get("processInstanceId");
HistoricProcessInstance instance = ActivitiUtil.getHistoryService()
.createHistoricProcessInstanceQuery()
.processInstanceId(processInstanceId)
.singleResult();
if(instance == null) {
throw new ActivitiException("Process instance not found for id " + processInstanceId);
}
ObjectNode responseJSON = new ObjectMapper().createObjectNode();
responseJSON.put("processInstanceId", instance.getId());
if (instance.getBusinessKey() != null) {
responseJSON.put("businessKey", instance.getBusinessKey());
} else {
responseJSON.putNull("businessKey");
}
responseJSON.put("processDefinitionId", instance.getProcessDefinitionId());
responseJSON.put("startTime", RequestUtil.dateToString(instance.getStartTime()));
responseJSON.put("startActivityId", instance.getStartActivityId());
if (instance.getStartUserId() != null) {
responseJSON.put("startUserId", instance.getStartUserId());
} else {
responseJSON.putNull("startUserId");
}
if(instance.getEndTime() == null) {
responseJSON.put("completed", false);
} else {
responseJSON.put("completed", true);
responseJSON.put("endTime", RequestUtil.dateToString(instance.getEndTime()));
responseJSON.put("endActivityId", instance.getEndActivityId());
responseJSON.put("duration", instance.getDurationInMillis());
}
addTaskList(processInstanceId, responseJSON);
addActivityList(processInstanceId, responseJSON);
addVariableList(processInstanceId, responseJSON);
return responseJSON;
}
@Delete
public ObjectNode deleteProcessInstance() {
if(authenticate() == false) return null;
String processInstanceId = (String) getRequest().getAttributes().get("processInstanceId");
ActivitiUtil.getRuntimeService().deleteProcessInstance(processInstanceId, "REST API");
ObjectNode successNode = new ObjectMapper().createObjectNode();
successNode.put("success", true);
return successNode;
}
private void addTaskList(String processInstanceId, ObjectNode responseJSON) {
List<HistoricTaskInstance> taskList = ActivitiUtil.getHistoryService()
.createHistoricTaskInstanceQuery()
.processInstanceId(processInstanceId)
.orderByHistoricActivityInstanceStartTime()
.asc()
.list();
if(taskList != null && taskList.size() > 0) {
ArrayNode tasksJSON = new ObjectMapper().createArrayNode();
responseJSON.put("tasks", tasksJSON);
for (HistoricTaskInstance historicTaskInstance : taskList) {
ObjectNode taskJSON = new ObjectMapper().createObjectNode();
taskJSON.put("taskId", historicTaskInstance.getId());
taskJSON.put("taskDefinitionKey", historicTaskInstance.getTaskDefinitionKey());
if (historicTaskInstance.getName() != null) {
taskJSON.put("taskName", historicTaskInstance.getName());
} else {
taskJSON.putNull("taskName");
}
if (historicTaskInstance.getOwner() != null) {
taskJSON.put("owner", historicTaskInstance.getOwner());
} else {
taskJSON.putNull("owner");
}
if (historicTaskInstance.getAssignee() != null) {
taskJSON.put("assignee", historicTaskInstance.getAssignee());
} else {
taskJSON.putNull("assignee");
}
taskJSON.put("startTime", RequestUtil.dateToString(historicTaskInstance.getStartTime()));
if(historicTaskInstance.getEndTime() == null) {
taskJSON.put("completed", false);
} else {
taskJSON.put("completed", true);
taskJSON.put("endTime", RequestUtil.dateToString(historicTaskInstance.getEndTime()));
taskJSON.put("duration", historicTaskInstance.getDurationInMillis());
}
tasksJSON.add(taskJSON);
}
}
}
private void addActivityList(String processInstanceId, ObjectNode responseJSON) {
List<HistoricActivityInstance> activityList = ActivitiUtil.getHistoryService()
.createHistoricActivityInstanceQuery()
.processInstanceId(processInstanceId)
.orderByHistoricActivityInstanceStartTime()
.asc()
.list();
if(activityList != null && activityList.size() > 0) {
ArrayNode activitiesJSON = new ObjectMapper().createArrayNode();
responseJSON.put("activities", activitiesJSON);
for (HistoricActivityInstance historicActivityInstance : activityList) {
ObjectNode activityJSON = new ObjectMapper().createObjectNode();
activityJSON.put("activityId", historicActivityInstance.getActivityId());
if (historicActivityInstance.getActivityName() != null) {
activityJSON.put("activityName", historicActivityInstance.getActivityName());
} else {
activityJSON.putNull("activityName");
}
activityJSON.put("activityType", historicActivityInstance.getActivityType());
activityJSON.put("startTime", RequestUtil.dateToString(historicActivityInstance.getStartTime()));
if(historicActivityInstance.getEndTime() == null) {
activityJSON.put("completed", false);
} else {
activityJSON.put("completed", true);
activityJSON.put("endTime", RequestUtil.dateToString(historicActivityInstance.getEndTime()));
activityJSON.put("duration", historicActivityInstance.getDurationInMillis());
}
activitiesJSON.add(activityJSON);
}
}
}
private void addVariableList(String processInstanceId, ObjectNode responseJSON) {
try {
Map<String, Object> variableMap = ActivitiUtil.getRuntimeService()
.getVariables(processInstanceId);
if(variableMap != null && variableMap.size() > 0) {
ArrayNode variablesJSON = new ObjectMapper().createArrayNode();
responseJSON.put("variables", variablesJSON);
for (String key : variableMap.keySet()) {
Object variableValue = variableMap.get(key);
ObjectNode variableJSON = new ObjectMapper().createObjectNode();
variableJSON.put("variableName", key);
if (variableValue != null) {
if (variableValue instanceof Boolean) {
variableJSON.put("variableValue", (Boolean) variableValue);
} else if (variableValue instanceof Long) {
variableJSON.put("variableValue", (Long) variableValue);
} else if (variableValue instanceof Double) {
variableJSON.put("variableValue", (Double) variableValue);
} else if (variableValue instanceof Float) {
variableJSON.put("variableValue", (Float) variableValue);
} else if (variableValue instanceof Integer) {
variableJSON.put("variableValue", (Integer) variableValue);
} else {
variableJSON.put("variableValue", variableValue.toString());
}
} else {
variableJSON.putNull("variableValue");
}
variablesJSON.add(variableJSON);
}
}
} catch(Exception e) {
// Absorb possible error that the execution could not be found
}
List<HistoricDetail> historyVariableList = ActivitiUtil.getHistoryService()
.createHistoricDetailQuery()
.processInstanceId(processInstanceId)
.variableUpdates()
.orderByTime()
.desc()
.list();
if(historyVariableList != null && historyVariableList.size() > 0) {
ArrayNode variablesJSON = new ObjectMapper().createArrayNode();
responseJSON.put("historyVariables", variablesJSON);
for (HistoricDetail historicDetail : historyVariableList) {
HistoricVariableUpdate variableUpdate = (HistoricVariableUpdate) historicDetail;
ObjectNode variableJSON = new ObjectMapper().createObjectNode();
variableJSON.put("variableName", variableUpdate.getVariableName());
if (variableUpdate.getValue() != null) {
if (variableUpdate.getValue() instanceof Boolean) {
variableJSON.put("variableValue", (Boolean) variableUpdate.getValue());
} else if (variableUpdate.getValue() instanceof Long) {
variableJSON.put("variableValue", (Long) variableUpdate.getValue());
} else if (variableUpdate.getValue() instanceof Double) {
variableJSON.put("variableValue", (Double) variableUpdate.getValue());
} else if (variableUpdate.getValue() instanceof Float) {
variableJSON.put("variableValue", (Float) variableUpdate.getValue());
} else if (variableUpdate.getValue() instanceof Integer) {
variableJSON.put("variableValue", (Integer) variableUpdate.getValue());
} else {
variableJSON.put("variableValue", variableUpdate.getValue().toString());
}
} else {
variableJSON.putNull("variableValue");
}
variableJSON.put("variableType", variableUpdate.getVariableTypeName());
variableJSON.put("revision", variableUpdate.getRevision());
variableJSON.put("time", RequestUtil.dateToString(variableUpdate.getTime()));
variablesJSON.add(variableJSON);
}
}
}
}