/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.sling.bgservlets.impl.servlets;
import java.io.IOException;
import javax.jcr.Session;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletResponse;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.servlets.SlingAllMethodsServlet;
import org.apache.sling.bgservlets.BackgroundServletConstants;
import org.apache.sling.bgservlets.JobConsole;
import org.apache.sling.bgservlets.JobStatus;
import org.apache.sling.commons.json.JSONException;
import org.apache.sling.commons.json.io.JSONWriter;
/** Handles POST to a job node, to request a job
* state change.
*/
@Component
@Service
@Properties({
@Property(name = "sling.servlet.resourceTypes", value = BackgroundServletConstants.JOB_RESOURCE_TYPE),
@Property(name = "sling.servlet.methods", value="POST")
})
@SuppressWarnings("serial")
public class JobStateChangeServlet extends SlingAllMethodsServlet {
public static final String PARAM_STATE = "desiredState";
@Reference
private JobConsole jobConsole;
@Override
protected void doPost(SlingHttpServletRequest request, SlingHttpServletResponse response)
throws ServletException, IOException {
final String str = request.getParameter(PARAM_STATE);
if(str == null) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Missing parameter:" + PARAM_STATE);
}
JobStatus.State desiredState = JobStatus.State.NEW;
try {
desiredState = JobStatus.State.valueOf(str);
} catch(Exception e) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Invalid " + PARAM_STATE + ": " + str);
return;
}
final Session session = request.getResourceResolver().adaptTo(Session.class);
if(session == null) {
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "ResourceResolver does not adapt to a Session");
return;
}
final JobStatus j = jobConsole.getJobStatus(session, request.getResource().getPath());
final JobStatus.State oldState = j.getState();
j.requestStateChange(desiredState);
final JobStatus.State newState = j.getState();
response.setContentType("application/json");
response.setCharacterEncoding("UTF-8");
final JSONWriter w = new JSONWriter(response.getWriter());
try {
w.object();
w.key("info").value("Requested state change");
w.key(PARAM_STATE).value(desiredState.toString());
w.key("path").value(j.getPath());
w.key("currentState").value(newState);
w.key("stateChanged").value(newState != oldState);
w.endObject();
} catch(JSONException je) {
throw new ServletException("JSONException in doPost", je);
}
}
}