JSPUtil.java
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上传日期:2018-01-08
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- /**
- * 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.hadoop.mapred;
- import java.io.IOException;
- import java.util.Iterator;
- import java.util.Collection;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.util.StringUtils;
- import org.apache.hadoop.util.ServletUtil;
- class JSPUtil {
- private static final String PRIVATE_ACTIONS_KEY = "webinterface.private.actions";
-
- public static final Configuration conf = new Configuration();
- /**
- * Method used to process the request from the job page based on the
- * request which it has received. For example like changing priority.
- *
- * @param request HTTP request Object.
- * @param response HTTP response object.
- * @param tracker {@link JobTracker} instance
- * @throws IOException
- */
- public static void processButtons(HttpServletRequest request,
- HttpServletResponse response, JobTracker tracker) throws IOException {
- if (conf.getBoolean(PRIVATE_ACTIONS_KEY, false)
- && request.getParameter("killJobs") != null) {
- String[] jobs = request.getParameterValues("jobCheckBox");
- if (jobs != null) {
- for (String job : jobs) {
- tracker.killJob(JobID.forName(job));
- }
- }
- }
- if (conf.getBoolean(PRIVATE_ACTIONS_KEY, false) &&
- request.getParameter("changeJobPriority") != null) {
- String[] jobs = request.getParameterValues("jobCheckBox");
- if (jobs != null) {
- JobPriority jobPri = JobPriority.valueOf(request
- .getParameter("setJobPriority"));
- for (String job : jobs) {
- tracker.setJobPriority(JobID.forName(job), jobPri);
- }
- }
- }
- }
- /**
- * Method used to generate the Job table for Job pages.
- *
- * @param label display heading to be used in the job table.
- * @param jobs vector of jobs to be displayed in table.
- * @param refresh refresh interval to be used in jobdetails page.
- * @param rowId beginning row id to be used in the table.
- * @return
- * @throws IOException
- */
- public static String generateJobTable(String label, Collection<JobInProgress> jobs
- , int refresh, int rowId) throws IOException {
- boolean isModifiable = label.equals("Running")
- && conf.getBoolean(
- PRIVATE_ACTIONS_KEY, false);
- StringBuffer sb = new StringBuffer();
-
- sb.append("<table border="1" cellpadding="5" cellspacing="0">n");
- if (jobs.size() > 0) {
- if (isModifiable) {
- sb.append("<form action="/jobtracker.jsp" onsubmit="return confirmAction();" method="POST">");
- sb.append("<tr>");
- sb.append("<td><input type="Button" onclick="selectAll()" " +
- "value="Select All" id="checkEm"></td>");
- sb.append("<td>");
- sb.append("<input type="submit" name="killJobs" value="Kill Selected Jobs">");
- sb.append("</td");
- sb.append("<td><nobr>");
- sb.append("<select name="setJobPriority">");
- for (JobPriority prio : JobPriority.values()) {
- sb.append("<option"
- + (JobPriority.NORMAL == prio ? " selected="selected">" : ">")
- + prio + "</option>");
- }
- sb.append("</select>");
- sb.append("<input type="submit" name="changeJobPriority" " +
- "value="Change">");
- sb.append("</nobr></td>");
- sb.append("<td colspan="10"> </td>");
- sb.append("</tr>");
- sb.append("<td> </td>");
- } else {
- sb.append("<tr>");
- }
- sb.append("<td><b>Jobid</b></td><td><b>Priority" +
- "</b></td><td><b>User</b></td>");
- sb.append("<td><b>Name</b></td>");
- sb.append("<td><b>Map % Complete</b></td>");
- sb.append("<td><b>Map Total</b></td>");
- sb.append("<td><b>Maps Completed</b></td>");
- sb.append("<td><b>Reduce % Complete</b></td>");
- sb.append("<td><b>Reduce Total</b></td>");
- sb.append("<td><b>Reduces Completed</b></td>");
- sb.append("<td><b>Job Scheduling Information</b></td>");
- sb.append("</tr>n");
- for (Iterator<JobInProgress> it = jobs.iterator(); it.hasNext(); ++rowId) {
- JobInProgress job = it.next();
- JobProfile profile = job.getProfile();
- JobStatus status = job.getStatus();
- JobID jobid = profile.getJobID();
- int desiredMaps = job.desiredMaps();
- int desiredReduces = job.desiredReduces();
- int completedMaps = job.finishedMaps();
- int completedReduces = job.finishedReduces();
- String name = profile.getJobName();
- String jobpri = job.getPriority().toString();
- String schedulingInfo = job.getStatus().getSchedulingInfo();
- if (isModifiable) {
- sb.append("<tr><td><input TYPE="checkbox" " +
- "onclick="checkButtonVerbage()" " +
- "name="jobCheckBox" value="
- + jobid + "></td>");
- } else {
- sb.append("<tr>");
- }
- sb.append("<td id="job_" + rowId
- + ""><a href="jobdetails.jsp?jobid=" + jobid + "&refresh="
- + refresh + "">" + jobid + "</a></td>" + "<td id="priority_"
- + rowId + "">" + jobpri + "</td>" + "<td id="user_" + rowId
- + "">" + profile.getUser() + "</td>" + "<td id="name_" + rowId
- + "">" + ("".equals(name) ? " " : name) + "</td>" + "<td>"
- + StringUtils.formatPercent(status.mapProgress(), 2)
- + ServletUtil.percentageGraph(status.mapProgress() * 100, 80)
- + "</td><td>" + desiredMaps + "</td><td>" + completedMaps
- + "</td><td>"
- + StringUtils.formatPercent(status.reduceProgress(), 2)
- + ServletUtil.percentageGraph(status.reduceProgress() * 100, 80)
- + "</td><td>" + desiredReduces + "</td><td> " + completedReduces
- + "</td><td>" + schedulingInfo
- + "</td></tr>n");
- }
- if (isModifiable) {
- sb.append("</form>n");
- }
- } else {
- sb.append("<tr><td align="center" colspan="8"><i>none</i>" +
- "</td></tr>n");
- }
- sb.append("</table>n");
-
- return sb.toString();
- }
- }