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

Class EventAdditionalFieldInterceptor

java.lang.Object

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

All Implemented Interfaces:

EventResolverInterceptor, TemplateResolverInterceptor<LogEvent,EventResolverContext>

@Plugin(name="EventAdditionalFieldInterceptor",
        category="JsonTemplateResolverInterceptor")
public class EventAdditionalFieldInterceptor
extends Object
implements EventResolverInterceptor

Interceptor to add additional fields after event template read.

Field Summary

Fields inherited from interface org.apache.logging.log4j.layout.template.json.resolver.TemplateResolverInterceptor

CATEGORY

Method Summary

Modifier and Type	Method and Description
static EventAdditionalFieldInterceptor	getInstance()
Object	processTemplateBeforeResolverInjection(EventResolverContext context, Object node) Intercept the read template before compiler (i.e., TemplateResolvers.ofTemplate(TemplateResolverContext, String) starts injecting resolvers.

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.EventResolverInterceptor

getContextClass, getValueClass

Method Detail

getInstance

@PluginFactory
public static EventAdditionalFieldInterceptor getInstance()

processTemplateBeforeResolverInjection

public Object processTemplateBeforeResolverInjection(EventResolverContext context,
                                                     Object node)

Description copied from interface: TemplateResolverInterceptor

Intercept the read template before compiler (i.e., TemplateResolvers.ofTemplate(TemplateResolverContext, String) starts injecting resolvers.

This is the right place to introduce, say, contextual additional fields.

Specified by:

processTemplateBeforeResolverInjection in interface TemplateResolverInterceptor<LogEvent,EventResolverContext>

node - the root object of the read template

Returns:

the root object of the template to be compiled