Package org.apache.camel.tracing

Class ActiveSpanManager

java.lang.Object

org.apache.camel.tracing.ActiveSpanManager

public final class ActiveSpanManager
extends Object

Utility class for managing active spans as a stack associated with an exchange.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ActiveSpanManager.Holder	Simple holder for the currently active span and an optional reference to the parent holder.

Field Summary

Fields

Modifier and Type	Field	Description
static String	MDC_SPAN_ID
static String	MDC_TRACE_ID

Method Summary

Modifier and Type	Method	Description
static void	activate(org.apache.camel.Exchange exchange, SpanAdapter span)	This method activates the supplied span for the supplied exchange.
static void	deactivate(org.apache.camel.Exchange exchange)	This method deactivates an existing active span associated with the supplied exchange.
static void	endScope(org.apache.camel.Exchange exchange)	If underlying span is active, closes its scope without ending the span.
static SpanAdapter	getSpan(org.apache.camel.Exchange exchange)	This method returns the current active span associated with the exchange.

Methods inherited from class java.lang.Object

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

Field Detail

MDC_TRACE_ID

public static final String MDC_TRACE_ID

See Also:

Constant Field Values

MDC_SPAN_ID

public static final String MDC_SPAN_ID

See Also:

Constant Field Values

Method Detail

getSpan

public static SpanAdapter getSpan(org.apache.camel.Exchange exchange)

This method returns the current active span associated with the exchange.

Parameters:

exchange - The exchange

Returns:

The current active span, or null if none exists

activate

public static void activate(org.apache.camel.Exchange exchange,
                            SpanAdapter span)

This method activates the supplied span for the supplied exchange. If an existing span is found for the exchange, this will be pushed onto a stack.

Parameters:

exchange - The exchange

span - The span

deactivate

public static void deactivate(org.apache.camel.Exchange exchange)

This method deactivates an existing active span associated with the supplied exchange. Once deactivated, if a parent span is found associated with the stack for the exchange, it will be restored as the current span for that exchange.

Parameters:

exchange - The exchange

endScope

public static void endScope(org.apache.camel.Exchange exchange)

If underlying span is active, closes its scope without ending the span. This methods should be called after async execution is started on the same thread on which span was activated. ExchangeAsyncStartedEvent is used to notify about it.

Parameters:

exchange - The exchange