ActiveSpanManager (Camel :: Common Tracing 3.19.0 API)

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

All Methods Static Methods Concrete Methods
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 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