Autoconfigure Generic wrapper for Mono fix #326

Author: oliemansm

graphql-kickstart-spring-boot-autoconfigure-tools/src/main/java/graphql/kickstart/tools/boot/GraphQLJavaToolsAutoConfiguration.java

@@ -44,7 +44,7 @@
 @Slf4j
 @Configuration
 @ConditionalOnClass(SchemaParser.class)
-@AutoConfigureAfter({JacksonAutoConfiguration.class})
+@AutoConfigureAfter(JacksonAutoConfiguration.class)
 @EnableConfigurationProperties(GraphQLToolsProperties.class)
 public class GraphQLJavaToolsAutoConfiguration {
 

graphql-kickstart-spring-boot-autoconfigure-webflux/src/main/java/graphql/kickstart/spring/webflux/boot/GraphQLSpringWebfluxAutoConfiguration.java

@@ -50,8 +50,8 @@
 @SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")
 @Slf4j
 @Configuration
-@ConditionalOnBean({GraphQLSchema.class})
-@AutoConfigureAfter({GraphQLJavaToolsAutoConfiguration.class})
+@ConditionalOnBean(GraphQLSchema.class)
+@AutoConfigureAfter(GraphQLJavaToolsAutoConfiguration.class)
 @Import({GraphQLController.class, ReactiveWebSocketSubscriptionsHandler.class})
 public class GraphQLSpringWebfluxAutoConfiguration {
 

graphql-kickstart-spring-boot-autoconfigure-webflux/src/main/java/graphql/kickstart/spring/webflux/boot/MonoAutoConfiguration.java

@@ -0,0 +1,37 @@
+package graphql.kickstart.spring.webflux.boot;
+
+import graphql.kickstart.tools.SchemaParser;
+import graphql.kickstart.tools.SchemaParserOptions.GenericWrapper;
+import graphql.kickstart.tools.boot.GraphQLJavaToolsAutoConfiguration;
+import java.util.List;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.AutoConfigureBefore;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import reactor.core.publisher.Mono;
+
+@Configuration
+@ConditionalOnClass(SchemaParser.class)
+@AutoConfigureBefore(GraphQLJavaToolsAutoConfiguration.class)
+public class MonoAutoConfiguration {
+
+  @Bean
+  GenericWrapper monoWrapper(@Autowired(required = false) List<GenericWrapper> genericWrappers) {
+    if (notWrapsMono(genericWrappers)) {
+      return GenericWrapper.withTransformer(
+          Mono.class,
+          0,
+          Mono::toFuture,
+          t -> t
+      );
+    }
+    return null;
+  }
+
+  private boolean notWrapsMono(List<GenericWrapper> genericWrappers) {
+    return genericWrappers == null ||
+        genericWrappers.stream().noneMatch(it -> it.getType().isAssignableFrom(Mono.class));
+  }
+
+}

graphql-kickstart-spring-boot-autoconfigure-webflux/src/main/resources/META-INF/spring.factories

@@ -1,2 +1,3 @@
 org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
-graphql.kickstart.spring.webflux.boot.GraphQLSpringWebfluxAutoConfiguration
+  graphql.kickstart.spring.webflux.boot.GraphQLSpringWebfluxAutoConfiguration,\
+  graphql.kickstart.spring.webflux.boot.MonoAutoConfiguration