LogFields

classin packageklyn.logging

public final class LogFields

LogFields

Immutable snapshot of structured fields attached to a log event.

Input maps are copied on construction and toMap() returns another copy, so field membership cannot be changed through an emitted event. Referenced object values retain their own mutability semantics.

Example

import klyn.logging

fields = LogFields({"requestId": "req-42"})
assert fields["requestId"] == "req-42"

Properties

Modifier and Type	Member	Description
public readonly property	size `size as ULong`	Number of structured fields.

Constructors

Modifier and Type	Member	Description
public	LogFields `LogFields(values as Map<String, Object> = null)`	Creates an immutable field snapshot.

Methods

Modifier and Type	Member	Description
public	items `items() as IList<Tuple<String, Object> >`	Returns an immutable snapshot of field entries.
public	keys `keys() as IList<String>`	Returns field names.
public static	merge `merge( context as Map<String, Object>, explicitFields as Map<String, Object> ) as LogFields`	Merges two maps, giving explicit fields precedence over context fields.
public override	toMap `toMap() as SortedMap<String, Object>`	Returns a mutable copy of the fields.
public override	toString `toString() as String`	Returns a readable map representation.

Operators

Modifier and Type	Member	Description
public	operator in(name as String) as Boolean	Tests whether a field exists.
public	operator[](name as String) as Object	Reads a field.