import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * Default constructor
 */
public WebAppProxyServlet() {
  super();
  conf = new YarnConfiguration();
  this.trackingUriPlugins =
      conf.getInstances(YarnConfiguration.YARN_TRACKING_URL_GENERATOR,
          TrackingUriPlugin.class);
  this.rmAppPageUrlBase = StringHelper.pjoin(
      WebAppUtils.getResolvedRMWebAppURLWithScheme(conf), "cluster", "app");
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * Returns the first valid tracking link, if any, from the given id from the
 * given list of plug-ins, if any.
 * 
 * @param id the id of the application for which the tracking link is desired
 * @param trackingUriPlugins list of plugins from which to get the tracking link
 * @return the desired link if possible, otherwise null
 * @throws URISyntaxException
 */
public static URI getUriFromTrackingPlugins(ApplicationId id,
    List<TrackingUriPlugin> trackingUriPlugins)
    throws URISyntaxException {
  URI toRet = null;
  for(TrackingUriPlugin plugin : trackingUriPlugins)
  {
    toRet = plugin.getTrackingUri(id);
    if (toRet != null)
    {
      return toRet;
    }
  }
  return null;
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
@Test
public void testGetProxyUriFromPluginsReturnsNullIfNoPlugins()
    throws URISyntaxException {
  ApplicationId id = BuilderUtils.newApplicationId(6384623l, 5);
  List<TrackingUriPlugin> list =
      Lists.newArrayListWithExpectedSize(0);
  assertNull(ProxyUriUtils.getUriFromTrackingPlugins(id, list));
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * Default constructor
 */
public WebAppProxyServlet() {
  super();
  conf = new YarnConfiguration();
  this.trackingUriPlugins =
      conf.getInstances(YarnConfiguration.YARN_TRACKING_URL_GENERATOR,
          TrackingUriPlugin.class);
  this.rmAppPageUrlBase = StringHelper.pjoin(
      WebAppUtils.getResolvedRMWebAppURLWithScheme(conf), "cluster", "app");
  this.ahsAppPageUrlBase = StringHelper.pjoin(
      WebAppUtils.getHttpSchemePrefix(conf) + WebAppUtils
      .getAHSWebAppURLWithoutScheme(conf), "applicationhistory", "apps");
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * Default constructor
 */
public WebAppProxyServlet()
{
  super();
  conf = new YarnConfiguration();
  this.trackingUriPlugins =
      conf.getInstances(YarnConfiguration.YARN_TRACKING_URL_GENERATOR,
          TrackingUriPlugin.class);
  this.rmAppPageUrlBase = StringHelper.pjoin(
      WebAppUtils.getResolvedRMWebAppURLWithScheme(conf), "cluster", "app");
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * Default constructor
 */
public WebAppProxyServlet()
{
  super();
  YarnConfiguration conf = new YarnConfiguration();
  this.trackingUriPlugins =
      conf.getInstances(YarnConfiguration.YARN_TRACKING_URL_GENERATOR,
          TrackingUriPlugin.class);
  this.rmAppPageUrlBase = StringHelper.pjoin(
      YarnConfiguration.getRMWebAppURL(conf), "cluster", "app");
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * Default constructor
 */
public WebAppProxyServlet() {
  super();
  conf = new YarnConfiguration();
  this.trackingUriPlugins =
      conf.getInstances(YarnConfiguration.YARN_TRACKING_URL_GENERATOR,
          TrackingUriPlugin.class);
  this.rmAppPageUrlBase = StringHelper.pjoin(
      WebAppUtils.getResolvedRMWebAppURLWithScheme(conf), "cluster", "app");
  this.ahsAppPageUrlBase = StringHelper.pjoin(
      WebAppUtils.getHttpSchemePrefix(conf) + WebAppUtils
      .getAHSWebAppURLWithoutScheme(conf), "applicationhistory", "app");
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * Default constructor
 */
public WebAppProxyServlet()
{
  super();
  YarnConfiguration conf = new YarnConfiguration();
  this.trackingUriPlugins =
      conf.getInstances(YarnConfiguration.YARN_TRACKING_URL_GENERATOR,
          TrackingUriPlugin.class);
  this.rmAppPageUrlBase = StringHelper.pjoin(
      WebAppUtils.getResolvedRMWebAppURLWithScheme(conf), "cluster", "app");
}
 

import org.apache.hadoop.yarn.util.TrackingUriPlugin; //导入依赖的package包/类
/**
 * This method is used by Java object deserialization, to fill in the
 * transient {@link #trackingUriPlugins} field.
 * See {@link ObjectInputStream#defaultReadObject()}
 * <p>
 *   <I>Do not remove</I>
 * <p>
 * Yarn isn't currently serializing this class, but findbugs
 * complains in its absence.
 * 
 * 
 * @param input source
 * @throws IOException IO failure
 * @throws ClassNotFoundException classloader fun
 */
private void readObject(ObjectInputStream input)
    throws IOException, ClassNotFoundException {
  input.defaultReadObject();
  conf = new YarnConfiguration();
  this.trackingUriPlugins =
      conf.getInstances(YarnConfiguration.YARN_TRACKING_URL_GENERATOR,
          TrackingUriPlugin.class);
}