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 ([email protected])

Method Summary

Modifier and Type	Method	Description
void	fireAfterDataFetch(Context context)
void	fireAfterExecute(Context context)
void	fireBeforeDataFetch(Context context)
void	fireBeforeExecute(Context context)
graphql.GraphQL.Builder	fireBeforeGraphQLBuild(graphql.GraphQL.Builder builder)	This gets fired just before we build the GraphQL object
void	fireBeforeMethodInvoke(InvokeInfo invokeInfo)
graphql.schema.GraphQLSchema.Builder	fireBeforeSchemaBuild(graphql.schema.GraphQLSchema.Builder builder)	This gets fired just before we create the final schema.
Operation	fireCreateOperation(Operation operation)	This gets fired during the bootstrap phase before a new operation is being created.
void	fireOnDataFetchError(Context context, Throwable t)
void	fireOnExecuteError(Context context, Throwable t)
Map<String,javax.json.bind.Jsonb>	fireOverrideJsonbConfig()
static EventEmitter	getInstance()

Methods inherited from class java.lang.Object

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

Method Detail

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,javax.json.bind.Jsonb> fireOverrideJsonbConfig()