Package org.apache.drill.yarn.appMaster.http

Class WebUiPageTree

java.lang.Object

javax.ws.rs.core.Application

org.glassfish.jersey.server.ResourceConfig

org.apache.drill.yarn.appMaster.http.PageTree

org.apache.drill.yarn.appMaster.http.WebUiPageTree

All Implemented Interfaces:

javax.ws.rs.core.Configurable<org.glassfish.jersey.server.ResourceConfig>, javax.ws.rs.core.Configuration, org.glassfish.jersey.ExtendedConfig, org.glassfish.jersey.server.ServerConfig

public class WebUiPageTree
extends PageTree

The Drill AM web UI. The format is highly compact. We use javax.ws.rs to mark up a Pojo with page path, permissions and HTTP methods. The ADMIN_ROLE is reused from Drill's web UI.

In general, all pages require admin role, except for two: the login page and the redirect page which the YARN web UI follows to start the AM UI.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	WebUiPageTree.Acknowledge	Passes information to the acknowledgement page.
static class	WebUiPageTree.CancelDrillbitPage	Displays a warning page to ask the user if they want to cancel a Drillbit.
static class	WebUiPageTree.ConfigPage	Display the configuration page which displays the contents of DoY and selected Drill config as name/value pairs.
static class	WebUiPageTree.ConfirmShrink	Passes information to the confirmation page.
static class	WebUiPageTree.DrillbitsPage	Displays the list of Drillbits showing details for each Drillbit.
static class	WebUiPageTree.HistoryPage	Displays a history of completed tasks which indicates failed or cancelled Drillbits.
static class	WebUiPageTree.LogInLogOutPages	Pages, adapted from Drill, that display the login and logout pages.
static class	WebUiPageTree.ManagePage	Page that lets the admin change the cluster size or shut down the cluster.
static class	WebUiPageTree.RedirectPage	DoY provides a link to YARN to display the AM UI.
static class	WebUiPageTree.ResizePage	Confirm that the user wants to resize the cluster.
static class	WebUiPageTree.RootPage	Main DoY page that displays cluster status, and the status of the resource groups.
static class	WebUiPageTree.StopPage	Confirmation page when the admin asks to stop the cluster.

Constructor Summary

Constructors

Constructor	Description
WebUiPageTree(Dispatcher dispatcher)	Build the pages for the Web UI using Freemarker to implement the MVC mechanism.

Method Summary

Methods inherited from class org.apache.drill.yarn.appMaster.http.PageTree

toMapModel, toModel, toModel

Methods inherited from class org.glassfish.jersey.server.ResourceConfig

addProperties, files, files, forApplication, forApplicationClass, forApplicationClass, getApplication, getApplicationName, getClasses, getClassLoader, getConfiguration, getContracts, getInstances, getProperties, getProperty, getPropertyNames, getResources, getRuntimeType, getSingletons, isEnabled, isEnabled, isProperty, isRegistered, isRegistered, packages, packages, packages, property, register, register, register, register, register, register, register, register, registerClasses, registerClasses, registerFinder, registerInstances, registerInstances, registerResources, registerResources, setApplicationName, setClassLoader, setProperties

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

WebUiPageTree

public WebUiPageTree(Dispatcher dispatcher)

Build the pages for the Web UI using Freemarker to implement the MVC mechanism. This class builds on a rather complex mechanism; understand that to understand what the lines of code below are doing.

Parameters:

dispatcher - the DoY AM dispatcher that receives requests for information about, or requests to change the state of, the Drill clutser