private void StartWebApp()
{
Configuration conf = GetConfig();
TimelineAuthenticationFilter.SetTimelineDelegationTokenSecretManager(secretManagerService
.GetTimelineDelegationTokenSecretManager());
// Always load pseudo authentication filter to parse "user.name" in an URL
// to identify a HTTP request's user in insecure mode.
// When Kerberos authentication type is set (i.e., secure mode is turned on),
// the customized filter will be loaded by the timeline server to do Kerberos
// + DT authentication.
string initializers = conf.Get("hadoop.http.filter.initializers");
bool modifiedInitializers = false;
initializers = initializers == null || initializers.Length == 0 ? string.Empty :
initializers;
if (!initializers.Contains(typeof(CrossOriginFilterInitializer).FullName))
{
if (conf.GetBoolean(YarnConfiguration.TimelineServiceHttpCrossOriginEnabled, YarnConfiguration
.TimelineServiceHttpCrossOriginEnabledDefault))
{
if (initializers.Contains(typeof(HttpCrossOriginFilterInitializer).FullName))
{
initializers = initializers.ReplaceAll(typeof(HttpCrossOriginFilterInitializer).FullName
, typeof(CrossOriginFilterInitializer).FullName);
}
else
{
if (initializers.Length != 0)
{
initializers += ",";
}
initializers += typeof(CrossOriginFilterInitializer).FullName;
}
modifiedInitializers = true;
}
}
if (!initializers.Contains(typeof(TimelineAuthenticationFilterInitializer).FullName
))
{
if (initializers.Length != 0)
{
initializers += ",";
}
initializers += typeof(TimelineAuthenticationFilterInitializer).FullName;
modifiedInitializers = true;
}
string[] parts = initializers.Split(",");
AList <string> target = new AList <string>();
foreach (string filterInitializer in parts)
{
filterInitializer = filterInitializer.Trim();
if (filterInitializer.Equals(typeof(AuthenticationFilterInitializer).FullName))
{
modifiedInitializers = true;
continue;
}
target.AddItem(filterInitializer);
}
string actualInitializers = StringUtils.Join(target, ",");
if (modifiedInitializers)
{
conf.Set("hadoop.http.filter.initializers", actualInitializers);
}
string bindAddress = WebAppUtils.GetWebAppBindURL(conf, YarnConfiguration.TimelineServiceBindHost
, WebAppUtils.GetAHSWebAppURLWithoutScheme(conf));
try
{
AHSWebApp ahsWebApp = new AHSWebApp(timelineDataManager, ahsClientService);
webApp = WebApps.$for <ApplicationHistoryClientService>("applicationhistory", ahsClientService
, "ws").With(conf).WithAttribute(YarnConfiguration.TimelineServiceWebappAddress,
conf.Get(YarnConfiguration.TimelineServiceWebappAddress)).At(bindAddress).Build(
ahsWebApp);
HttpServer2 httpServer = webApp.HttpServer();
string[] names = conf.GetTrimmedStrings(YarnConfiguration.TimelineServiceUiNames);
WebAppContext webAppContext = httpServer.GetWebAppContext();
foreach (string name in names)
{
string webPath = conf.Get(YarnConfiguration.TimelineServiceUiWebPathPrefix + name
);
string onDiskPath = conf.Get(YarnConfiguration.TimelineServiceUiOnDiskPathPrefix
+ name);
WebAppContext uiWebAppContext = new WebAppContext();
uiWebAppContext.SetContextPath(webPath);
uiWebAppContext.SetWar(onDiskPath);
string[] AllUrls = new string[] { "/*" };
FilterHolder[] filterHolders = webAppContext.GetServletHandler().GetFilters();
foreach (FilterHolder filterHolder in filterHolders)
{
if (!"guice".Equals(filterHolder.GetName()))
{
HttpServer2.DefineFilter(uiWebAppContext, filterHolder.GetName(), filterHolder.GetClassName
(), filterHolder.GetInitParameters(), AllUrls);
}
}
Log.Info("Hosting " + name + " from " + onDiskPath + " at " + webPath);
httpServer.AddContext(uiWebAppContext, true);
}
httpServer.Start();
conf.UpdateConnectAddr(YarnConfiguration.TimelineServiceBindHost, YarnConfiguration
.TimelineServiceWebappAddress, YarnConfiguration.DefaultTimelineServiceWebappAddress
, this.GetListenerAddress());
Log.Info("Instantiating AHSWebApp at " + GetPort());
}
catch (Exception e)
{
string msg = "AHSWebApp failed to start.";
Log.Error(msg, e);
throw new YarnRuntimeException(msg, e);
}
}