W3CTraceContextEncoding

java.lang.Object
- io.opentelemetry.api.trace.propagation.internal.W3CTraceContextEncoding

```
@Immutable
public final class W3CTraceContextEncoding
extends java.lang.Object
```
Implementation of the tracestate header encoding and decoding as defined by the W3C Trace Context recommendation.
This class is internal and is hence not for public use. Its APIs are unstable and can change at any time.

Field Summary

Fields
Modifier and Type	Field	Description
`private static char`	`TRACESTATE_ENTRY_DELIMITER`
`private static java.util.regex.Pattern`	`TRACESTATE_ENTRY_DELIMITER_SPLIT_PATTERN`
`private static char`	`TRACESTATE_KEY_VALUE_DELIMITER`
`private static int`	`TRACESTATE_MAX_MEMBERS`
`private static int`	`TRACESTATE_MAX_SIZE`

Constructor Summary

Constructors
Modifier Constructor Description

private W3CTraceContextEncoding()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static TraceState`	`decodeTraceState(java.lang.String traceStateHeader)`	Decodes a trace state header into a `TraceState` object.
`static java.lang.String`	`encodeTraceState(TraceState traceState)`	Return the trace state encoded as a string according to the W3C specification.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - TRACESTATE_MAX_SIZE
```
private static final int TRACESTATE_MAX_SIZE
```
    See Also:
    
    Constant Field Values
  - TRACESTATE_MAX_MEMBERS
```
private static final int TRACESTATE_MAX_MEMBERS
```
    See Also:
    
    Constant Field Values
  - TRACESTATE_KEY_VALUE_DELIMITER
```
private static final char TRACESTATE_KEY_VALUE_DELIMITER
```
    See Also:
    
    Constant Field Values
  - TRACESTATE_ENTRY_DELIMITER
```
private static final char TRACESTATE_ENTRY_DELIMITER
```
    See Also:
    
    Constant Field Values
  - TRACESTATE_ENTRY_DELIMITER_SPLIT_PATTERN
```
private static final java.util.regex.Pattern TRACESTATE_ENTRY_DELIMITER_SPLIT_PATTERN
```
- Constructor Detail
  - W3CTraceContextEncoding
```
private W3CTraceContextEncoding()
```
- Method Detail
  - decodeTraceState
```
public static TraceState decodeTraceState(java.lang.String traceStateHeader)
```
    Decodes a trace state header into a TraceState object.
    
    Throws:
    
    java.lang.IllegalArgumentException - if traceStateHeader does not comply with the specification
  - encodeTraceState
```
public static java.lang.String encodeTraceState(TraceState traceState)
```
    Return the trace state encoded as a string according to the W3C specification.