Package org.apache.hadoop.yarn.webapp.view

Class HtmlBlock

java.lang.Object

org.apache.hadoop.yarn.webapp.View

org.apache.hadoop.yarn.webapp.view.TextView

org.apache.hadoop.yarn.webapp.view.HtmlBlock

All Implemented Interfaces:

Params, SubView

Direct Known Subclasses:

AggregatedLogsBlock, AggregatedLogsNavBlock, FooterBlock, HeaderBlock, InfoBlock, JQueryUI, LipsumBlock, LogAggregationHtmlBlock, NavBlock

@LimitedPrivate({"YARN","MapReduce"})
public abstract class HtmlBlock
extends TextView
implements SubView

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	HtmlBlock.Block

Nested classes/interfaces inherited from class org.apache.hadoop.yarn.webapp.View

View.ViewContext

Field Summary

Fields

Modifier and Type	Field	Description
protected static final long	BYTES_IN_MB
protected static final String	DATE_PATTERN
protected static final String	UNAVAILABLE

Fields inherited from class org.apache.hadoop.yarn.webapp.View

LOG

Fields inherited from interface org.apache.hadoop.yarn.webapp.Params

ERROR_DETAILS, TITLE, TITLE_LINK, USER

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	HtmlBlock()
protected	HtmlBlock(View.ViewContext ctx)

Method Summary

Modifier and Type	Method	Description
protected org.apache.hadoop.security.UserGroupInformation	getCallerUGI()
protected void	initUserHelpInformationDiv(HtmlBlock.Block html, boolean isEnabled)	Initialize User Help Information Div.
void	render()	The API to render the view
protected abstract void	render(HtmlBlock.Block html)	Render a block of html.
void	renderPartial()	render the sub-view

Methods inherited from class org.apache.hadoop.yarn.webapp.view.TextView

echo, echoWithoutEscapeHtml, puts, putWithoutEscapeHtml, writer

Methods inherited from class org.apache.hadoop.yarn.webapp.View

$, $, context, cookies, error, getInstance, inDevMode, info, injector, moreParams, outputStream, prefix, render, request, response, root, root_url, set, setTitle, setTitle, status, url

Methods inherited from class java.lang.Object

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

Field Details

UNAVAILABLE

protected static final String UNAVAILABLE

See Also:

• Constant Field Values

BYTES_IN_MB

protected static final long BYTES_IN_MB

See Also:

• Constant Field Values

DATE_PATTERN

protected static final String DATE_PATTERN

See Also:

• Constant Field Values

Constructor Details

HtmlBlock

protected HtmlBlock()

HtmlBlock

protected HtmlBlock(View.ViewContext ctx)

Method Details

render

public void render()

Description copied from class: View

The API to render the view

Specified by:

render in class View

renderPartial

public void renderPartial()

Description copied from interface: SubView

render the sub-view

Specified by:

renderPartial in interface SubView

render

protected abstract void render(HtmlBlock.Block html)

Render a block of html. To be overridden by implementation.

Parameters:

html - the block to render

getCallerUGI

protected org.apache.hadoop.security.UserGroupInformation getCallerUGI()

initUserHelpInformationDiv

protected void initUserHelpInformationDiv(HtmlBlock.Block html,
 boolean isEnabled)

Initialize User Help Information Div. When the user does not configure the Yarn Federation function, prompt the user.

Parameters:

html - HTML page.

isEnabled - If federation is enabled.