/*
* Copyright 2015 Collective, Inc.
*
* 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 com.collective.celos.servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.collective.celos.*;
import com.collective.celos.database.StateDatabaseConnection;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* Returns JSON information about a single slot.
*/
@SuppressWarnings("serial")
public class JSONSlotStateServlet extends AbstractJSONServlet {
protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException {
String id = req.getParameter(CelosClient.ID_PARAM);
try {
if (id == null) {
res.sendError(HttpServletResponse.SC_BAD_REQUEST, CelosClient.ID_PARAM + " parameter missing.");
return;
}
SlotID slotID = new SlotID(new WorkflowID(id), getRequestTime(req));
try (StateDatabaseConnection connection = getStateDatabase().openConnection()) {
SlotState slotState = connection.getSlotState(slotID);
if (slotState == null) {
res.sendError(HttpServletResponse.SC_NOT_FOUND, "Slot not found: " + id);
} else {
ObjectNode object = slotState.toJSONNode();
writer.writeValue(res.getOutputStream(), object);
}
}
} catch (Exception e) {
throw new ServletException(e);
}
}
}