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

Class ThreadContextDataResolver

java.lang.Object

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

All Implemented Interfaces:

EventResolver, TemplateResolver<LogEvent>

public final class ThreadContextDataResolver
extends Object

Mapped Diagnostic Context (MDC), aka. Thread Context Data, resolver.

See Also:

ReadOnlyStringMapResolver

Method Summary

Modifier and Type	Method	Description
boolean	isFlattening()	Indicates if the resolution should be appended to the parent JSON object.
boolean	isResolvable(LogEvent logEvent)	Indicates if the resolver if applicable for the given value.
void	resolve(LogEvent logEvent, JsonWriter jsonWriter)	Resolves the given value using the provided JsonWriter.
void	resolve(LogEvent logEvent, JsonWriter jsonWriter, boolean succeedingEntry)	Resolves the given value using the provided JsonWriter.

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

isResolvable

Method Detail

isFlattening

public boolean isFlattening()

Description copied from interface: TemplateResolver

Indicates if the resolution should be appended to the parent JSON object.

For instance, ThreadContextDataResolver, i.e., MDC resolver, uses this flag to indicate whether the contents should be appended to the parent JSON object or not.

Specified by:

isFlattening in interface TemplateResolver<LogEvent>

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>

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

public void resolve(LogEvent logEvent,
                    JsonWriter jsonWriter,
                    boolean succeedingEntry)

Description copied from interface: TemplateResolver

Resolves the given value using the provided JsonWriter.

Specified by:

resolve in interface TemplateResolver<LogEvent>

succeedingEntry - false, if this is the first element in a collection; true, otherwise