hadoop AppsBlock 源码

haddop AppsBlock 代码

文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/webapp/AppsBlock.java

/**
 * 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.yarn.server.webapp;

import static org.apache.hadoop.yarn.util.StringHelper.join;
import static org.apache.hadoop.yarn.webapp.YarnWebParams.APP_STATE;
import static org.apache.hadoop.yarn.webapp.YarnWebParams.APP_START_TIME_BEGIN;
import static org.apache.hadoop.yarn.webapp.YarnWebParams.APP_START_TIME_END;
import static org.apache.hadoop.yarn.webapp.YarnWebParams.APPS_NUM;
import static org.apache.hadoop.yarn.webapp.view.JQueryUI.C_PROGRESSBAR;
import static org.apache.hadoop.yarn.webapp.view.JQueryUI.C_PROGRESSBAR_VALUE;

import java.io.IOException;
import java.security.PrivilegedExceptionAction;
import java.util.Collection;
import java.util.EnumSet;
import java.util.List;

import org.apache.commons.text.StringEscapeUtils;
import org.apache.commons.lang3.Range;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.yarn.api.ApplicationBaseProtocol;
import org.apache.hadoop.yarn.api.protocolrecords.GetApplicationsRequest;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.api.records.YarnApplicationState;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.server.webapp.dao.AppInfo;
import org.apache.hadoop.yarn.util.Apps;
import org.apache.hadoop.yarn.webapp.BadRequestException;
import org.apache.hadoop.yarn.webapp.hamlet2.Hamlet;
import org.apache.hadoop.yarn.webapp.hamlet2.Hamlet.TABLE;
import org.apache.hadoop.yarn.webapp.hamlet2.Hamlet.TBODY;
import org.apache.hadoop.yarn.webapp.view.HtmlBlock;

import com.google.inject.Inject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AppsBlock extends HtmlBlock {

  private static final Logger LOG = LoggerFactory.getLogger(AppsBlock.class);
  protected ApplicationBaseProtocol appBaseProt;
  protected EnumSet<YarnApplicationState> reqAppStates;
  protected UserGroupInformation callerUGI;
  protected Collection<ApplicationReport> appReports;

  @Inject
  protected AppsBlock(ApplicationBaseProtocol appBaseProt, ViewContext ctx) {
    super(ctx);
    this.appBaseProt = appBaseProt;
  }

  protected void fetchData() throws YarnException, IOException,
      InterruptedException {
    reqAppStates = EnumSet.noneOf(YarnApplicationState.class);
    String reqStateString = $(APP_STATE);
    if (reqStateString != null && !reqStateString.isEmpty()) {
      String[] appStateStrings = reqStateString.split(",");
      for (String stateString : appStateStrings) {
        reqAppStates.add(YarnApplicationState.valueOf(stateString.trim()));
      }
    }
    callerUGI = getCallerUGI();
    final GetApplicationsRequest request =
        GetApplicationsRequest.newInstance(reqAppStates);
    String appsNumStr = $(APPS_NUM);
    if (appsNumStr != null && !appsNumStr.isEmpty()) {
      long appsNum = Long.parseLong(appsNumStr);
      request.setLimit(appsNum);
    }

    String appStartedTimeBegainStr = $(APP_START_TIME_BEGIN);
    long appStartedTimeBegain = 0;
    if (appStartedTimeBegainStr != null && !appStartedTimeBegainStr.isEmpty()) {
      appStartedTimeBegain = Long.parseLong(appStartedTimeBegainStr);
      if (appStartedTimeBegain < 0) {
        throw new BadRequestException(
          "app.started-time.begin must be greater than 0");
      }
    }
    String appStartedTimeEndStr = $(APP_START_TIME_END);
    long appStartedTimeEnd = Long.MAX_VALUE;
    if (appStartedTimeEndStr != null && !appStartedTimeEndStr.isEmpty()) {
      appStartedTimeEnd = Long.parseLong(appStartedTimeEndStr);
      if (appStartedTimeEnd < 0) {
        throw new BadRequestException(
          "app.started-time.end must be greater than 0");
      }
    }
    if (appStartedTimeBegain > appStartedTimeEnd) {
      throw new BadRequestException(
        "app.started-time.end must be greater than app.started-time.begin");
    }
    request.setStartRange(
        Range.between(appStartedTimeBegain, appStartedTimeEnd));

    if (callerUGI == null) {
      appReports = getApplicationReport(request);
    } else {
      appReports =
          callerUGI
            .doAs(new PrivilegedExceptionAction<Collection<ApplicationReport>>() {
              @Override
              public Collection<ApplicationReport> run() throws Exception {
                return getApplicationReport(request);
              }
            });
    }
  }

  protected List<ApplicationReport> getApplicationReport(
      final GetApplicationsRequest request) throws YarnException, IOException {
    return appBaseProt.getApplications(request).getApplicationList();
  }

  @Override
  public void render(Block html) {
    setTitle("Applications");

    try {
      fetchData();
    } catch (YarnException | IOException | InterruptedException e) {
      String message = "Failed to read the applications.";
      LOG.error(message, e);
      html.p().__(message).__();
      return;
    }
    renderData(html);
  }

  protected void renderData(Block html) {
    TBODY<TABLE<Hamlet>> tbody =
        html.table("#apps").thead().tr().th(".id", "ID").th(".user", "User")
          .th(".name", "Name").th(".type", "Application Type")
          .th(".apptag", "Application Tags").th(".queue", "Queue")
          .th(".priority", "Application Priority")
          .th(".starttime", "StartTime")
          .th(".launchtime", "LaunchTime")
          .th(".finishtime", "FinishTime")
          .th(".state", "State").th(".finalstatus", "FinalStatus")
          .th(".progress", "Progress").th(".ui", "Tracking UI").__().__().tbody();

    StringBuilder appsTableData = new StringBuilder("[\n");
    for (ApplicationReport appReport : appReports) {
      // TODO: remove the following condition. It is still here because
      // the history side implementation of ApplicationBaseProtocol
      // hasn't filtering capability (YARN-1819).
      if (!reqAppStates.isEmpty()
          && !reqAppStates.contains(appReport.getYarnApplicationState())) {
        continue;
      }
      AppInfo app = new AppInfo(appReport);
      String percent = StringUtils.format("%.1f", app.getProgress());
      appsTableData
        .append("[\"<a href='")
        .append(url("app", app.getAppId()))
        .append("'>")
        .append(app.getAppId())
        .append("</a>\",\"")
        .append(
          StringEscapeUtils.escapeEcmaScript(StringEscapeUtils.escapeHtml4(app
              .getUser())))
        .append("\",\"")
        .append(
          StringEscapeUtils.escapeEcmaScript(StringEscapeUtils.escapeHtml4(app
            .getName())))
        .append("\",\"")
        .append(
          StringEscapeUtils.escapeEcmaScript(StringEscapeUtils.escapeHtml4(app
            .getType())))
          .append("\",\"")
          .append(
              StringEscapeUtils.escapeEcmaScript(StringEscapeUtils.escapeHtml4(
                  app.getApplicationTags() == null ? "" : app.getApplicationTags())))
        .append("\",\"")
        .append(
          StringEscapeUtils.escapeEcmaScript(StringEscapeUtils.escapeHtml4(app
            .getQueue()))).append("\",\"").append(String
                .valueOf(app.getPriority()))
        .append("\",\"").append(app.getStartedTime())
        .append("\",\"").append(app.getLaunchTime())
        .append("\",\"").append(app.getFinishedTime())
        .append("\",\"")
        .append(app.getAppState() == null ? UNAVAILABLE : app.getAppState())
        .append("\",\"")
        .append(app.getFinalAppStatus())
        .append("\",\"")
        // Progress bar
        .append("<br title='").append(percent).append("'> <div class='")
        .append(C_PROGRESSBAR).append("' title='").append(join(percent, '%'))
        .append("'> ").append("<div class='").append(C_PROGRESSBAR_VALUE)
        .append("' style='").append(join("width:", percent, '%'))
        .append("'> </div> </div>").append("\",\"<a ");

      String trackingURL =
          app.getTrackingUrl() == null
              || app.getTrackingUrl().equals(UNAVAILABLE) ? null : app
            .getTrackingUrl();

      String trackingUI =
          app.getTrackingUrl() == null || app.getTrackingUrl().equals(UNAVAILABLE)
              ? "Unassigned" :
              Apps.isApplicationFinalState(app.getAppState())
                  ? "History" : "ApplicationMaster";
      appsTableData.append(trackingURL == null ? "#" : "href='" + trackingURL)
        .append("'>").append(trackingUI).append("</a>\"],\n");

    }
    if (appsTableData.charAt(appsTableData.length() - 2) == ',') {
      appsTableData.delete(appsTableData.length() - 2,
        appsTableData.length() - 1);
    }
    appsTableData.append("]");
    html.script().$type("text/javascript")
      .__("var appsTableData=" + appsTableData).__();

    tbody.__().__();
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AppAttemptBlock 源码

hadoop AppBlock 源码

hadoop AppInfoProvider 源码

hadoop BasicAppInfo 源码

hadoop ContainerBlock 源码

hadoop ErrorsAndWarningsBlock 源码

hadoop LogServlet 源码

hadoop LogWebService 源码

hadoop LogWebServiceUtils 源码

hadoop WebPageUtils 源码