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,
046                                                     true,
047                                                                             Arrays.asList("PUT"))));
048        RESOURCES_INFO[1] = new ResourceInfo(RestConstants.ADMIN_OS_ENV_RESOURCE, Arrays.asList("GET"),
049                Collections.EMPTY_LIST);
050        RESOURCES_INFO[2] = new ResourceInfo(RestConstants.ADMIN_JAVA_SYS_PROPS_RESOURCE, Arrays.asList("GET"),
051                Collections.EMPTY_LIST);
052        RESOURCES_INFO[3] = new ResourceInfo(RestConstants.ADMIN_CONFIG_RESOURCE, Arrays.asList("GET"),
053                Collections.EMPTY_LIST);
054        RESOURCES_INFO[4] = new ResourceInfo(RestConstants.ADMIN_INSTRUMENTATION_RESOURCE, Arrays.asList("GET"),
055                Collections.EMPTY_LIST);
056        RESOURCES_INFO[5] = new ResourceInfo(RestConstants.ADMIN_BUILD_VERSION_RESOURCE, Arrays.asList("GET"),
057                Collections.EMPTY_LIST);
058    }
059
060    public V0AdminServlet() {
061        super(INSTRUMENTATION_NAME, RESOURCES_INFO);
062        modeTag = RestConstants.ADMIN_SAFE_MODE_PARAM;
063    }
064
065    /*
066     * (non-Javadoc)
067     *
068     * @see
069     * org.apache.oozie.servlet.BaseAdminServlet#populateOozieMode(org.json.
070     * simple.JSONObject)
071     */
072    @Override
073    protected void populateOozieMode(JSONObject json) {
074        if (Services.get().getSystemMode() != SYSTEM_MODE.NORMAL) {
075            json.put(JsonTags.OOZIE_SAFE_MODE, true);
076        }
077        else {
078            json.put(JsonTags.OOZIE_SAFE_MODE, false);
079        }
080    }
081
082    /*
083     * (non-Javadoc)
084     *
085     * @see
086     * org.apache.oozie.servlet.BaseAdminServlet#setOozieMode(javax.servlet.
087     * http.HttpServletRequest, javax.servlet.http.HttpServletResponse,
088     * java.lang.String)
089     */
090    @Override
091    protected void setOozieMode(HttpServletRequest request, HttpServletResponse response, String resourceName)
092            throws XServletException {
093        boolean safeMode = Boolean.parseBoolean(request.getParameter(modeTag));
094        SYSTEM_MODE sysMode = safeMode ? SYSTEM_MODE.NOWEBSERVICE : SYSTEM_MODE.NORMAL;
095        Services.get().setSystemMode(sysMode);
096        response.setStatus(HttpServletResponse.SC_OK);
097    }
098
099    /*
100     * (non-Javadoc)
101     *
102     * @see
103     * org.apache.oozie.servlet.BaseAdminServlet#getQueueDump(org.json.simple
104     * .JSONObject)
105     */
106    @Override
107    protected void getQueueDump(JSONObject json) throws XServletException {
108        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0301, "cannot get queue dump");
109    }
110
111    @Override
112    protected JsonBean getJMSConnectionInfo(HttpServletRequest request, HttpServletResponse response) throws XServletException,
113            IOException {
114        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0302, "Not supported in v0");
115    }
116
117    @Override
118    protected Map<String, String> getOozieURLs() throws XServletException {
119        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0302, "Not supported in v0");
120    }
121
122    @Override
123    protected void sendMetricsResponse(HttpServletResponse response) throws IOException, XServletException {
124        throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0302, "Not supported in v0");
125    }
126}