/**
* Copyright (c) 2010 Yahoo! Inc. All rights reserved.
* 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. See accompanying LICENSE file.
*/
package org.apache.oozie.servlet;
import java.io.IOException;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.oozie.BuildInfo;
import org.apache.oozie.client.rest.JsonTags;
import org.apache.oozie.client.rest.RestConstants;
import org.apache.oozie.service.AuthorizationException;
import org.apache.oozie.service.AuthorizationService;
import org.apache.oozie.service.InstrumentationService;
import org.apache.oozie.service.Services;
import org.apache.oozie.util.Instrumentation;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
public abstract class BaseAdminServlet extends JsonRestServlet {
private static final long serialVersionUID = 1L;
protected String modeTag;
public BaseAdminServlet(String instrumentationName, ResourceInfo[] RESOURCES_INFO) {
super(instrumentationName, RESOURCES_INFO);
setAllowSafeModeChanges(true);
}
/**
* Change safemode state.
*/
@Override
protected void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String resourceName = getResourceName(request);
request.setAttribute(AUDIT_OPERATION, resourceName);
request.setAttribute(AUDIT_PARAM, request.getParameter(modeTag));
try {
AuthorizationService auth = Services.get().get(AuthorizationService.class);
auth.authorizeForAdmin(getUser(request), true);
}
catch (AuthorizationException ex) {
throw new XServletException(HttpServletResponse.SC_UNAUTHORIZED, ex);
}
setOozieMode(request, response, resourceName);
/*if (resourceName.equals(RestConstants.ADMIN_STATUS_RESOURCE)) {
boolean safeMode = Boolean.parseBoolean(request.getParameter(RestConstants.ADMIN_SAFE_MODE_PARAM));
Services.get().setSafeMode(safeMode);
response.setStatus(HttpServletResponse.SC_OK);
}
else {
throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0301, resourceName);
}*/
}
/**
* Return safemode state, instrumentation, configuration, osEnv or
* javaSysProps
*/
@Override
@SuppressWarnings("unchecked")
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String resource = getResourceName(request);
Instrumentation instr = Services.get().get(InstrumentationService.class).get();
if (resource.equals(RestConstants.ADMIN_STATUS_RESOURCE)) {
JSONObject json = new JSONObject();
populateOozieMode(json);
// json.put(JsonTags.SYSTEM_SAFE_MODE, getOozeMode());
sendJsonResponse(response, HttpServletResponse.SC_OK, json);
}
else if (resource.equals(RestConstants.ADMIN_OS_ENV_RESOURCE)) {
JSONObject json = new JSONObject();
json.putAll(instr.getOSEnv());
sendJsonResponse(response, HttpServletResponse.SC_OK, json);
}
else if (resource.equals(RestConstants.ADMIN_JAVA_SYS_PROPS_RESOURCE)) {
JSONObject json = new JSONObject();
json.putAll(instr.getJavaSystemProperties());
sendJsonResponse(response, HttpServletResponse.SC_OK, json);
}
else if (resource.equals(RestConstants.ADMIN_CONFIG_RESOURCE)) {
JSONObject json = new JSONObject();
json.putAll(instr.getConfiguration());
sendJsonResponse(response, HttpServletResponse.SC_OK, json);
}
else if (resource.equals(RestConstants.ADMIN_INSTRUMENTATION_RESOURCE)) {
sendJsonResponse(response, HttpServletResponse.SC_OK, instrToJson(instr));
}
else if (resource.equals(RestConstants.ADMIN_BUILD_VERSION_RESOURCE)) {
JSONObject json = new JSONObject();
json.put(JsonTags.BUILD_VERSION, BuildInfo.getBuildInfo().getProperty(BuildInfo.BUILD_VERSION));
sendJsonResponse(response, HttpServletResponse.SC_OK, json);
}
else if (resource.equals(RestConstants.ADMIN_QUEUE_DUMP_RESOURCE)) {
JSONObject json = new JSONObject();
getQueueDump(json);
sendJsonResponse(response, HttpServletResponse.SC_OK, json);
}
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
}
@SuppressWarnings("unchecked")
private <T> JSONArray instrElementsToJson(Map<String, Map<String, Instrumentation.Element<T>>> instrElements) {
JSONArray array = new JSONArray();
for (Map.Entry<String, Map<String, Instrumentation.Element<T>>> group : instrElements.entrySet()) {
JSONObject json = new JSONObject();
String groupName = group.getKey();
json.put(JsonTags.INSTR_GROUP, groupName);
JSONArray dataArray = new JSONArray();
for (Map.Entry<String, Instrumentation.Element<T>> elementEntry : group.getValue().entrySet()) {
String samplerName = elementEntry.getKey();
JSONObject dataJson = new JSONObject();
dataJson.put(JsonTags.INSTR_NAME, samplerName);
Object value = elementEntry.getValue().getValue();
if (value instanceof Instrumentation.Timer) {
Instrumentation.Timer timer = (Instrumentation.Timer) value;
dataJson.put(JsonTags.INSTR_TIMER_TICKS, timer.getTicks());
dataJson.put(JsonTags.INSTR_TIMER_OWN_TIME_AVG, timer.getOwnAvg());
dataJson.put(JsonTags.INSTR_TIMER_TOTAL_TIME_AVG, timer.getTotalAvg());
dataJson.put(JsonTags.INSTR_TIMER_OWN_STD_DEV, timer.getOwnStdDev());
dataJson.put(JsonTags.INSTR_TIMER_TOTAL_STD_DEV, timer.getTotalStdDev());
dataJson.put(JsonTags.INSTR_TIMER_OWN_MIN_TIME, timer.getOwnMin());
dataJson.put(JsonTags.INSTR_TIMER_OWN_MAX_TIME, timer.getOwnMax());
dataJson.put(JsonTags.INSTR_TIMER_TOTAL_MIN_TIME, timer.getTotalMin());
dataJson.put(JsonTags.INSTR_TIMER_TOTAL_MAX_TIME, timer.getTotalMax());
}
else {
dataJson.put(JsonTags.INSTR_VARIABLE_VALUE, value);
}
dataArray.add(dataJson);
}
json.put(JsonTags.INSTR_DATA, dataArray);
array.add(json);
}
return array;
}
@SuppressWarnings("unchecked")
private JSONObject instrToJson(Instrumentation instr) {
JSONObject json = new JSONObject();
json.put(JsonTags.INSTR_VARIABLES, instrElementsToJson(instr.getVariables()));
json.put(JsonTags.INSTR_SAMPLERS, instrElementsToJson(instr.getSamplers()));
json.put(JsonTags.INSTR_COUNTERS, instrElementsToJson(instr.getCounters()));
json.put(JsonTags.INSTR_TIMERS, instrElementsToJson(instr.getTimers()));
return json;
}
protected abstract void populateOozieMode(JSONObject json);
protected abstract void setOozieMode(HttpServletRequest request, HttpServletResponse response, String resourceName)
throws XServletException;
protected abstract void getQueueDump(JSONObject json) throws XServletException;
}