PropagatedHeaders (Helidon Project 2.6.13 API)

All Known Implementing Classes:

PropagatedHeaders.NoopPropagatedHeaders, PropagatedHeaders.PrefixedPropagatedHeaders
```
public interface PropagatedHeaders
```
Headers propagated between Participant and Coordinator.

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`PropagatedHeaders.NoopPropagatedHeaders`	Noop headers, always returns same instance of empty map.
`static class`	`PropagatedHeaders.PrefixedPropagatedHeaders`	Propagated headers which can scan for allowed headers with any of the preconfigured prefixes.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`clear()`	Clear all headers.
`static PropagatedHeaders`	`create(Set<String> prefixes)`	Create new instance, with prefixes for allowed headers.
`static PropagatedHeaders`	`noop()`	Create new noop instance, always returns same instance of empty map.
`void`	`scan(Map<String,List<String>> headers)`	Scan map of headers for any headers with allowed prefix.
`Map<String,List<String>>`	`toMap()`	Get all headers as a map.

- Method Detail
  - toMap
```
Map<String,List<String>> toMap()
```
    Get all headers as a map.
    
    Returns:
    
    map of headers
  - scan
```
void scan(Map<String,List<String>> headers)
```
    Scan map of headers for any headers with allowed prefix. Any existing headers with same key is replaced.
    
    Parameters:
    
    headers - map to be scanned
  - clear
```
void clear()
```
    Clear all headers.
  - create
```
static PropagatedHeaders create(Set<String> prefixes)
```
    Create new instance, with prefixes for allowed headers.
    
    Parameters:
    
    prefixes - list of the allowed header prefixes
    
    Returns:
    
    new instance, ready to scan for allowed headers
  - noop
```
static PropagatedHeaders noop()
```
    Create new noop instance, always returns same instance of empty map.
    
    Returns:
    
    noop instance