Package io.smallrye.graphql.execution.event

Class EventEmitter

java.lang.Object
io.smallrye.graphql.execution.event.EventEmitter
public class EventEmitter extends Object
Fire some events while booting or executing. This allows some extension Loads implementations of EventingService with Java ServiceLoader. The order in which EventingServices are invoked can be controlled by annotating the class implementing EventingService with javax.annotation.Priority. See also io.smallrye.graphql.execution.event.Priorities containing relevant constants. When before* events happen EventingServices are invoked by ascending @{code @Priority}, and for after* events invocations are done by descending @{code @Priority}. Meaning that an EventingService with low javax.annotation.Priority is executed first on the way in, and last on the way out.
Author:
Phillip Kruger (phillip.kruger@redhat.com)

  • Method Details

    • getInstance

      public static EventEmitter getInstance()

    • fireBeforeExecute

      public void fireBeforeExecute(Context context)

    • fireOnExecuteError

      public void fireOnExecuteError(Context context, Throwable t)

    • fireAfterExecute

      public void fireAfterExecute(Context context)

    • fireBeforeDataFetch

      public void fireBeforeDataFetch(Context context)

    • fireBeforeMethodInvoke

      public void fireBeforeMethodInvoke(InvokeInfo invokeInfo) throws Exception
      Throws:
      Exception

    • fireOnDataFetchError

      public void fireOnDataFetchError(Context context, Throwable t)

    • fireAfterDataFetch

      public void fireAfterDataFetch(Context context)

    • fireBeforeGraphQLBuild

      public graphql.GraphQL.Builder fireBeforeGraphQLBuild(graphql.GraphQL.Builder builder)
      This gets fired just before we build the GraphQL object
      Parameters:
      builder - as it stands
      Returns:
      builder modified by listener

    • fireBeforeSchemaBuild

      public graphql.schema.GraphQLSchema.Builder fireBeforeSchemaBuild(graphql.schema.GraphQLSchema.Builder builder)
      This gets fired just before we create the final schema. This allows listeners to add to the builder any custom elements.
      Parameters:
      builder - as it stands
      Returns:
      builder modified by listener

    • fireCreateOperation

      public Operation fireCreateOperation(Operation operation)
      This gets fired during the bootstrap phase before a new operation is being created. This allows listeners to modify the operation
      Parameters:
      operation - as it stands
      Returns:
      operation possibly modified

    • fireOverrideJsonbConfig

      public Map<String,jakarta.json.bind.Jsonb> fireOverrideJsonbConfig()