Package org.apache.logging.log4j.layout.template.json.resolver

Class ThreadContextStackResolver

  • All Implemented Interfaces:
    EventResolver, TemplateResolver<LogEvent>
    public final class ThreadContextStackResolver
extends java.lang.Object
implements EventResolver
    Nested Diagnostic Context (NDC), aka. Thread Context Stack, resolver.

    Configuration

     config  = [ pattern ]
 pattern = "pattern" -> string

    Examples

    Resolve all NDC values into a list: 
     {
   "$resolver": "ndc"
 }
    Resolve all NDC values matching with the pattern regex: 
     {
   "$resolver": "ndc",
   "pattern": "user(Role|Rank):\\w+"
 }

    • Field Detail

      • itemPattern

        private final java.util.regex.Pattern itemPattern

    • Method Detail

      • getName

        static java.lang.String getName()

      • isResolvable

        public boolean isResolvable​(LogEvent logEvent)
        Description copied from interface: TemplateResolver
        Indicates if the resolver if applicable for the given value.

        For instance, the stack trace resolver can be short-circuited using this check if the stack traces are disabled in the layout configuration.

        Specified by:
        isResolvable in interface TemplateResolver<LogEvent>