Package org.jboss.resteasy.tracing.api

Class RESTEasyTracing

java.lang.Object

org.jboss.resteasy.tracing.api.RESTEasyTracing

public abstract class RESTEasyTracing
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final RESTEasyTracingLevel	DEFAULT_LEVEL	Default event level.
protected static final String	DEFAULT_LOGGER_NAME_SUFFIX	Default JDK logger name suffix.
static final String	HEADER_ACCEPT	Request header name to switch on request tracing.
static final String	HEADER_ACCEPT_FORMAT	Request header name to indicate the tracing info format.
static final String	HEADER_LOGGER	Request header name to set JDK logger name suffix to identify a request logs.
protected static final String	HEADER_RESPONSE_FORMAT	Response header name format.
static final String	HEADER_THRESHOLD	Request header name to change application default tracing level.
static final String	HEADER_TRACING_PREFIX	HTTP header prefix.
static final String	PROPERTY_NAME	TracingLogger instance is placed in request context properties under this name.
protected static final String	TRACING_LOGGER_NAME_PREFIX	JDK logger name prefix.

Constructor Summary

Constructors

Constructor	Description
RESTEasyTracing()

Method Summary

Modifier and Type	Method	Description
abstract boolean	isLogEnabled(RESTEasyTracingEvent event)	Test if a tracing support is enabled if event can be logged (according to event.level and threshold level set).
abstract void	log(RESTEasyTracingEvent event, Object... args)	Try to log event according to event level and request context threshold level setting.
abstract void	logDuration(RESTEasyTracingEvent event, long fromTimestamp, Object... args)	Try to log event according to event level and request context threshold level setting.
abstract long	timestamp(RESTEasyTracingEvent event)	If logging support is switched on for current request and event setting the method returns current timestamp in nanos.

Methods inherited from class java.lang.Object

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

Field Details

PROPERTY_NAME

public static final String PROPERTY_NAME

TracingLogger instance is placed in request context properties under this name.

HEADER_TRACING_PREFIX

public static final String HEADER_TRACING_PREFIX

HTTP header prefix.

See Also:

• Constant Field Values

HEADER_THRESHOLD

public static final String HEADER_THRESHOLD

Request header name to change application default tracing level.

See Also:

• Constant Field Values

HEADER_ACCEPT

public static final String HEADER_ACCEPT

Request header name to switch on request tracing. Make sense in case of tracing support enabled by ON_DEMAND value.

See Also:

• Constant Field Values

HEADER_ACCEPT_FORMAT

public static final String HEADER_ACCEPT_FORMAT

Request header name to indicate the tracing info format. Currently we support `TEXT` format and `JSON` format.

See Also:

• Constant Field Values

HEADER_LOGGER

public static final String HEADER_LOGGER

Request header name to set JDK logger name suffix to identify a request logs.

See Also:

• Constant Field Values

HEADER_RESPONSE_FORMAT

protected static final String HEADER_RESPONSE_FORMAT

Response header name format.

See Also:

• Constant Field Values

DEFAULT_LEVEL

public static final RESTEasyTracingLevel DEFAULT_LEVEL

Default event level.

TRACING_LOGGER_NAME_PREFIX

protected static final String TRACING_LOGGER_NAME_PREFIX

JDK logger name prefix.

See Also:

• Constant Field Values

DEFAULT_LOGGER_NAME_SUFFIX

protected static final String DEFAULT_LOGGER_NAME_SUFFIX

Default JDK logger name suffix. This can be overwrite by header HEADER_LOGGER.

See Also:

• Constant Field Values

Constructor Details

RESTEasyTracing

public RESTEasyTracing()

Method Details

isLogEnabled

public abstract boolean isLogEnabled(RESTEasyTracingEvent event)

Test if a tracing support is enabled if event can be logged (according to event.level and threshold level set).

Parameters:

event - event type to be tested

Returns:

true if event can be logged

log

public abstract void log(RESTEasyTracingEvent event,
 Object... args)

Try to log event according to event level and request context threshold level setting.

Parameters:

event - event type to be logged

args - message arguments (in relation to RESTEasyTracingEvent.messageFormat()

logDuration

public abstract void logDuration(RESTEasyTracingEvent event,
 long fromTimestamp,
 Object... args)

Try to log event according to event level and request context threshold level setting.

If logging support is switched on for current request and event setting the method computes duration of event and log message. If fromTimestamp is not set (i.e. -1) then duration of event is 0.

Parameters:

event - event type to be logged

fromTimestamp - logged event is running from the timestamp in nanos. -1 in case event has no duration

args - message arguments (in relation to RESTEasyTracingEvent.messageFormat()

timestamp

public abstract long timestamp(RESTEasyTracingEvent event)

If logging support is switched on for current request and event setting the method returns current timestamp in nanos.

Parameters:

event - event type to be logged

Returns:

Current timestamp in nanos or -1 if tracing is not enabled