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

Class MessageParameterResolver

java.lang.Object

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

All Implemented Interfaces:

EventResolver, TemplateResolver<LogEvent>

public final class MessageParameterResolver
extends java.lang.Object
implements EventResolver

Message parameter (i.e., Message.getParameters()) resolver.

Configuration

 config      = [ stringified ] , [ index ]
 stringified = "stringified" -> boolean
 index       = "index" -> number
 

Examples

Resolve the message parameters into an array:

 {
   "$resolver": "messageParameter"
 }
 

Resolve the string representation of all message parameters into an array:

 {
   "$resolver": "messageParameter",
   "stringified": true
 }
 

Resolve the first message parameter:

 {
   "$resolver": "messageParameter",
   "index": 0
 }

 Resolve the string representation of the first message parameter:

 
 {
   "$resolver": "messageParameter",
   "index": 0,
   "stringified": true
 }
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	MessageParameterResolver.ParameterConsumerState

Field Summary

Fields

Modifier and Type	Field	Description
private int	index
private static ParameterConsumer<MessageParameterResolver.ParameterConsumerState>	PARAMETER_CONSUMER
private Recycler<MessageParameterResolver.ParameterConsumerState>	parameterConsumerStateRecycler
private boolean	stringified

Constructor Summary

Constructors

Constructor	Description
MessageParameterResolver(EventResolverContext context, TemplateResolverConfig config)

Method Summary

Modifier and Type	Method	Description
(package private) static java.lang.String	getName()
void	resolve(LogEvent logEvent, JsonWriter jsonWriter)	Resolves the given value using the provided JsonWriter.
private void	resolve(ParameterVisitable parameterVisitable, JsonWriter jsonWriter)	Perform a garbage-free resolution via ParameterVisitable interface.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.logging.log4j.layout.template.json.resolver.TemplateResolver

isFlattening, isResolvable, isResolvable, resolve

Field Detail

parameterConsumerStateRecycler

private final Recycler<MessageParameterResolver.ParameterConsumerState> parameterConsumerStateRecycler

stringified

private final boolean stringified

index

private final int index

PARAMETER_CONSUMER

private static final ParameterConsumer<MessageParameterResolver.ParameterConsumerState> PARAMETER_CONSUMER

Constructor Detail

MessageParameterResolver

MessageParameterResolver(EventResolverContext context,
                         TemplateResolverConfig config)

Method Detail

getName

static java.lang.String getName()

resolve

public void resolve(LogEvent logEvent,
                    JsonWriter jsonWriter)

Description copied from interface: TemplateResolver

Resolves the given value using the provided JsonWriter.

Specified by:

resolve in interface TemplateResolver<LogEvent>

resolve

private void resolve(ParameterVisitable parameterVisitable,
                     JsonWriter jsonWriter)

Perform a garbage-free resolution via ParameterVisitable interface.