org.apache.hadoop.yarn.server.resourcemanager.webapp.AppsBlock.java Source code

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Here is the source code for org.apache.hadoop.yarn.server.resourcemanager.webapp.AppsBlock.java

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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.yarn.server.resourcemanager.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.view.JQueryUI.C_PROGRESSBAR;
import static org.apache.hadoop.yarn.webapp.view.JQueryUI.C_PROGRESSBAR_VALUE;

import java.util.Collection;
import java.util.HashSet;
import java.util.concurrent.ConcurrentMap;

import org.apache.commons.lang.StringEscapeUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.YarnApplicationState;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.AppInfo;
import org.apache.hadoop.yarn.webapp.hamlet.Hamlet;
import org.apache.hadoop.yarn.webapp.hamlet.Hamlet.TABLE;
import org.apache.hadoop.yarn.webapp.hamlet.Hamlet.TBODY;
import org.apache.hadoop.yarn.webapp.util.WebAppUtils;
import org.apache.hadoop.yarn.webapp.view.HtmlBlock;

import com.google.inject.Inject;

class AppsBlock extends HtmlBlock {
    final ConcurrentMap<ApplicationId, RMApp> apps;
    private final Configuration conf;

    @Inject
    AppsBlock(RMContext rmContext, ViewContext ctx, Configuration conf) {
        super(ctx);
        apps = rmContext.getRMApps();
        this.conf = conf;
    }

    @Override
    public void render(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(".queue", "Queue")
                .th(".starttime", "StartTime").th(".finishtime", "FinishTime").th(".state", "State")
                .th(".finalstatus", "FinalStatus").th(".progress", "Progress").th(".ui", "Tracking UI")._()._()
                .tbody();
        Collection<YarnApplicationState> reqAppStates = null;
        String reqStateString = $(APP_STATE);
        if (reqStateString != null && !reqStateString.isEmpty()) {
            String[] appStateStrings = reqStateString.split(",");
            reqAppStates = new HashSet<YarnApplicationState>(appStateStrings.length);
            for (String stateString : appStateStrings) {
                reqAppStates.add(YarnApplicationState.valueOf(stateString));
            }
        }
        StringBuilder appsTableData = new StringBuilder("[\n");
        for (RMApp app : apps.values()) {
            if (reqAppStates != null && !reqAppStates.contains(app.createApplicationState())) {
                continue;
            }
            AppInfo appInfo = new AppInfo(app, true, WebAppUtils.getHttpSchemePrefix(conf));
            String percent = String.format("%.1f", appInfo.getProgress());
            //AppID numerical value parsed by parseHadoopID in yarn.dt.plugins.js
            appsTableData.append("[\"<a href='").append(url("app", appInfo.getAppId())).append("'>")
                    .append(appInfo.getAppId()).append("</a>\",\"")
                    .append(StringEscapeUtils.escapeJavaScript(StringEscapeUtils.escapeHtml(appInfo.getUser())))
                    .append("\",\"")
                    .append(StringEscapeUtils.escapeJavaScript(StringEscapeUtils.escapeHtml(appInfo.getName())))
                    .append("\",\"")
                    .append(StringEscapeUtils
                            .escapeJavaScript(StringEscapeUtils.escapeHtml(appInfo.getApplicationType())))
                    .append("\",\"")
                    .append(StringEscapeUtils.escapeJavaScript(StringEscapeUtils.escapeHtml(appInfo.getQueue())))
                    .append("\",\"").append(appInfo.getStartTime()).append("\",\"").append(appInfo.getFinishTime())
                    .append("\",\"").append(appInfo.getState()).append("\",\"").append(appInfo.getFinalStatus())
                    .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 href='");

            String trackingURL = !appInfo.isTrackingUrlReady() ? "#" : appInfo.getTrackingUrlPretty();

            appsTableData.append(trackingURL).append("'>").append(appInfo.getTrackingUI()).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._()._();
    }
}