001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.oozie.servlet;
020
021import java.io.IOException;
022import java.util.Arrays;
023import java.util.Collections;
024import java.util.Map;
025
026import javax.servlet.http.HttpServletRequest;
027import javax.servlet.http.HttpServletResponse;
028
029import org.apache.oozie.ErrorCode;
030import org.apache.oozie.client.OozieClient.SYSTEM_MODE;
031import org.apache.oozie.client.rest.JsonBean;
032import org.apache.oozie.client.rest.JsonTags;
033import org.apache.oozie.client.rest.RestConstants;
034import org.apache.oozie.service.Services;
035import org.json.simple.JSONObject;
036
037@SuppressWarnings("unchecked")
038public class V0AdminServlet extends BaseAdminServlet {
039    private static final long serialVersionUID = 1L;
040    private static final String INSTRUMENTATION_NAME = "v0admin";
041    private static final ResourceInfo RESOURCES_INFO[] = new ResourceInfo[6];
042
043    static {
044        RESOURCES_INFO[0] = new ResourceInfo(RestConstants.ADMIN_STATUS_RESOURCE, Arrays.asList("PUT", "GET"),
045                                             Arrays.asList(new ParameterInfo(RestConstants.ADMIN_SAFE_MODE_PARAM, Boolean.class, true,
046                                                                             Arrays.asList("PUT"))));
047        RESOURCES_INFO[1] = new ResourceInfo(RestConstants.ADMIN_OS_ENV_RESOURCE, Arrays.asList("GET"),
048                Collections.EMPTY_LIST);
049        RESOURCES_INFO[2] = new ResourceInfo(RestConstants.ADMIN_JAVA_SYS_PROPS_RESOURCE, Arrays.asList("GET"),
050                Collections.EMPTY_LIST);
051        RESOURCES_INFO[3] = new ResourceInfo(RestConstants.ADMIN_CONFIG_RESOURCE, Arrays.asList("GET"),
052                Collections.EMPTY_LIST);
053        RESOURCES_INFO[4] = new ResourceInfo(RestConstants.ADMIN_INSTRUMENTATION_RESOURCE, Arrays.asList("GET"),
054                Collections.EMPTY_LIST);
055        RESOURCES_INFO[5] = new ResourceInfo(RestConstants.ADMIN_BUILD_VERSION_RESOURCE, Arrays.asList("GET"),
056                Collections.EMPTY_LIST);
057    }
058
059    public V0AdminServlet() {
060        super(INSTRUMENTATION_NAME, RESOURCES_INFO);
061        modeTag = RestConstants.ADMIN_SAFE_MODE_PARAM;
062    }
063
064    /*
065     * (non-Javadoc)
066     *
067     * @see
068     * org.apache.oozie.servlet.BaseAdminServlet#populateOozieMode(org.json.
069     * simple.JSONObject)
070     */
071    @Override
072    protected void populateOozieMode(JSONObject json) {
073        if (Services.get().getSystemMode() != SYSTEM_MODE.NORMAL) {
074            json.put(JsonTags.OOZIE_SAFE_MODE, true);
075        }
076        else {
077            json.put(JsonTags.OOZIE_SAFE_MODE, false);
078        }
079    }
080
081    /*
082     * (non-Javadoc)
083     *
084     * @see
085     * org.apache.oozie.servlet.BaseAdminServlet#setOozieMode(javax.servlet.
086     * http.HttpServletRequest, javax.servlet.http.HttpServletResponse,
087     * java.lang.String)
088     */
089    @Override
090    protected void setOozieMode(HttpServletRequest request, HttpServletResponse response, String resourceName)
091            throws XServletException {
092        boolean safeMode = Boolean.parseBoolean(request.getParameter(modeTag));
093        SYSTEM_MODE sysMode = safeMode ? SYSTEM_MODE.NOWEBSERVICE : SYSTEM_MODE.NORMAL;
094        Services.get().setSystemMode(sysMode);
095        response.setStatus(HttpServletResponse.SC_OK);
096    }
097
098    /*
099     * (non-Javadoc)
100     *
101     * @see
102     * org.apache.oozie.servlet.BaseAdminServlet#getQueueDump(org.json.simple
103     * .JSONObject)
104     */
105    @Override
106    protected void getQueueDump(JSONObject json) throws XServletException {
107        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0301, "cannot get queue dump");
108    }
109
110    @Override
111    protected JsonBean getJMSConnectionInfo(HttpServletRequest request, HttpServletResponse response) throws XServletException,
112            IOException {
113        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0302, "Not supported in v0");
114    }
115
116    @Override
117    protected Map<String, String> getOozieURLs() throws XServletException {
118        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0302, "Not supported in v0");
119    }
120
121    @Override
122    protected void sendMetricsResponse(HttpServletResponse response) throws IOException, XServletException {
123        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0302, "Not supported in v0");
124    }
125}