Class TraceConfigzZPageHandler

java.lang.Object

io.opencensus.contrib.zpages.ZPageHandler

io.opencensus.contrib.zpages.TraceConfigzZPageHandler

final class TraceConfigzZPageHandler
extends ZPageHandler

HTML page formatter for tracing config. The page displays information about the current active tracing configuration and allows users to change it.

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	CHANGE
private static final String	PERMANENT_CHANGE
private static final String	QUERY_COMPONENT_MAX_NUMBER_OF_ANNOTATIONS
private static final String	QUERY_COMPONENT_MAX_NUMBER_OF_ATTRIBUTES
private static final String	QUERY_COMPONENT_MAX_NUMBER_OF_LINKS
private static final String	QUERY_COMPONENT_MAX_NUMBER_OF_NETWORK_EVENTS
private static final String	QUERY_COMPONENT_SAMPLING_PROBABILITY
private static final String	RESTORE_DEFAULT_CHANGE
private static final String	RESTORE_DEFAULT_FORM_BODY
private static final String	TRACE_CONFIGZ_URL
private final TraceConfig	traceConfig
private static final String	TRACECONFIGZ_FORM_BODY

Constructor Summary

Constructors

Modifier	Constructor	Description
private	TraceConfigzZPageHandler(TraceConfig traceConfig)

Method Summary

Modifier and Type	Method	Description
(package private) static TraceConfigzZPageHandler	create(TraceConfig traceConfig)
void	emitHtml(Map<String,String> queryMap, OutputStream outputStream)	Emits the HTML generated page to the outputStream.
private static void	emitStyle(PrintWriter out)
private static void	emitTraceParamsTable(TraceParams params, PrintWriter out)
String	getUrlPath()	Returns the URL path that should be used to register this page.
private void	maybeApplyChanges(Map<String,String> queryMap)

Methods inherited from class Object

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

Field Details

TRACE_CONFIGZ_URL

private static final String TRACE_CONFIGZ_URL

See Also:

• Constant Field Values

traceConfig

private final TraceConfig traceConfig

CHANGE

private static final String CHANGE

See Also:

• Constant Field Values

PERMANENT_CHANGE

private static final String PERMANENT_CHANGE

See Also:

• Constant Field Values

RESTORE_DEFAULT_CHANGE

private static final String RESTORE_DEFAULT_CHANGE

See Also:

• Constant Field Values

QUERY_COMPONENT_SAMPLING_PROBABILITY

private static final String QUERY_COMPONENT_SAMPLING_PROBABILITY

See Also:

• Constant Field Values

QUERY_COMPONENT_MAX_NUMBER_OF_ATTRIBUTES

private static final String QUERY_COMPONENT_MAX_NUMBER_OF_ATTRIBUTES

See Also:

• Constant Field Values

QUERY_COMPONENT_MAX_NUMBER_OF_ANNOTATIONS

private static final String QUERY_COMPONENT_MAX_NUMBER_OF_ANNOTATIONS

See Also:

• Constant Field Values

QUERY_COMPONENT_MAX_NUMBER_OF_NETWORK_EVENTS

private static final String QUERY_COMPONENT_MAX_NUMBER_OF_NETWORK_EVENTS

See Also:

• Constant Field Values

QUERY_COMPONENT_MAX_NUMBER_OF_LINKS

private static final String QUERY_COMPONENT_MAX_NUMBER_OF_LINKS

See Also:

• Constant Field Values

TRACECONFIGZ_FORM_BODY

private static final String TRACECONFIGZ_FORM_BODY

See Also:

• Constant Field Values

RESTORE_DEFAULT_FORM_BODY

private static final String RESTORE_DEFAULT_FORM_BODY

See Also:

• Constant Field Values

Constructor Details

TraceConfigzZPageHandler

private TraceConfigzZPageHandler(TraceConfig traceConfig)

Method Details

create

static TraceConfigzZPageHandler create(TraceConfig traceConfig)

getUrlPath

public String getUrlPath()

Description copied from class: ZPageHandler

Returns the URL path that should be used to register this page.

Specified by:

getUrlPath in class ZPageHandler

Returns:

the URL path that should be used to register this page.

emitStyle

private static void emitStyle(PrintWriter out)

emitHtml

public void emitHtml(Map<String,String> queryMap,
 OutputStream outputStream)

Description copied from class: ZPageHandler

Emits the HTML generated page to the outputStream.

Specified by:

emitHtml in class ZPageHandler

Parameters:

queryMap - the query components map.

outputStream - the output OutputStream.

maybeApplyChanges

private void maybeApplyChanges(Map<String,String> queryMap)

emitTraceParamsTable

private static void emitTraceParamsTable(TraceParams params,
 PrintWriter out)