Separate transports in GraphQL auto-configurations

This commit revisits the existing GraphQL configuration properties to
better reflect which ones belong to specific transports.
This also relaxes the Web auto-configurations to only require the
`ExecutionGraphQlService` as a bean. The `GraphQlSource` is now an
optional bean dependency.

Closes gh-44495

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlProperties.java

@@ -20,6 +20,7 @@ import java.time.Duration;
 import java.util.Arrays;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.DeprecatedConfigurationProperty;
 import org.springframework.core.io.Resource;
 
 /**
@@ -31,31 +32,35 @@ import org.springframework.core.io.Resource;
 @ConfigurationProperties("spring.graphql")
 public class GraphQlProperties {
 
-	/**
+	private final Http http = new Http();
-	 * Path at which to expose a GraphQL request HTTP endpoint.
-	 */
-	private String path = "/graphql";
 
 	private final Graphiql graphiql = new Graphiql();
 
+	private final Rsocket rsocket = new Rsocket();
+
 	private final Schema schema = new Schema();
 
+	private final DeprecatedSse sse = new DeprecatedSse(this.http.getSse());
+
 	private final Websocket websocket = new Websocket();
 
-	private final Rsocket rsocket = new Rsocket();
+	public Http getHttp() {
-
+		return this.http;
-	private final Sse sse = new Sse();
+	}
 
 	public Graphiql getGraphiql() {
 		return this.graphiql;
 	}
 
+	@DeprecatedConfigurationProperty(replacement = "spring.graphql.http.path", since = "3.5.0")
+	@Deprecated(since = "3.5.0", forRemoval = true)
 	public String getPath() {
-		return this.path;
+		return getHttp().getPath();
 	}
 
+	@Deprecated(since = "3.5.0", forRemoval = true)
 	public void setPath(String path) {
-		this.path = path;
+		getHttp().setPath(path);
 	}
 
 	public Schema getSchema() {
@@ -70,10 +75,33 @@ public class GraphQlProperties {
 		return this.rsocket;
 	}
 
+	public DeprecatedSse getSse() {
+		return this.sse;
+	}
+
+	public static class Http {
+
+		/**
+		 * Path at which to expose a GraphQL request HTTP endpoint.
+		 */
+		private String path = "/graphql";
+
+		private final Sse sse = new Sse();
+
+		public String getPath() {
+			return this.path;
+		}
+
+		public void setPath(String path) {
+			this.path = path;
+		}
+
 		public Sse getSse() {
 			return this.sse;
 		}
 
+	}
+
 	public static class Schema {
 
 		/**
@@ -178,7 +206,7 @@ public class GraphQlProperties {
 
 			/**
 			 * Whether the endpoint that prints the schema is enabled. Schema is available
-			 * under spring.graphql.path + "/schema".
+			 * under spring.graphql.http.path + "/schema".
 			 */
 			private boolean enabled = false;
 
@@ -302,4 +330,25 @@ public class GraphQlProperties {
 
 	}
 
+	public static class DeprecatedSse {
+
+		private final Sse sse;
+
+		public DeprecatedSse(Sse sse) {
+			this.sse = sse;
+		}
+
+		@DeprecatedConfigurationProperty(replacement = "spring.graphql.http.sse.timeout", since = "3.5.0")
+		@Deprecated(since = "3.5.0", forRemoval = true)
+		public Duration getTimeout() {
+			return this.sse.getTimeout();
+		}
+
+		@Deprecated(since = "3.5.0", forRemoval = true)
+		public void setTimeout(Duration timeout) {
+			this.sse.setTimeout(timeout);
+		}
+
+	}
+
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/reactive/GraphQlWebFluxAutoConfiguration.java

@@ -85,13 +85,6 @@ public class GraphQlWebFluxAutoConfiguration {
 
 	private static final Log logger = LogFactory.getLog(GraphQlWebFluxAutoConfiguration.class);
 
-	@Bean
-	@ConditionalOnMissingBean
-	public WebGraphQlHandler webGraphQlHandler(ExecutionGraphQlService service,
-			ObjectProvider<WebGraphQlInterceptor> interceptors) {
-		return WebGraphQlHandler.builder(service).interceptors(interceptors.orderedStream().toList()).build();
-	}
-
 	@Bean
 	@ConditionalOnMissingBean
 	public GraphQlHttpHandler graphQlHttpHandler(WebGraphQlHandler webGraphQlHandler) {
@@ -100,15 +93,23 @@ public class GraphQlWebFluxAutoConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	public GraphQlSseHandler graphQlSseHandler(WebGraphQlHandler webGraphQlHandler) {
+	public GraphQlSseHandler graphQlSseHandler(WebGraphQlHandler webGraphQlHandler, GraphQlProperties properties) {
-		return new GraphQlSseHandler(webGraphQlHandler);
+		return new GraphQlSseHandler(webGraphQlHandler, properties.getHttp().getSse().getTimeout());
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public WebGraphQlHandler webGraphQlHandler(ExecutionGraphQlService service,
+			ObjectProvider<WebGraphQlInterceptor> interceptors) {
+		return WebGraphQlHandler.builder(service).interceptors(interceptors.orderedStream().toList()).build();
 	}
 
 	@Bean
 	@Order(0)
 	public RouterFunction<ServerResponse> graphQlRouterFunction(GraphQlHttpHandler httpHandler,
-			GraphQlSseHandler sseHandler, GraphQlSource graphQlSource, GraphQlProperties properties) {
+			GraphQlSseHandler sseHandler, ObjectProvider<GraphQlSource> graphQlSourceProvider,
-		String path = properties.getPath();
+			GraphQlProperties properties) {
+		String path = properties.getHttp().getPath();
 		logger.info(LogMessage.format("GraphQL endpoint HTTP POST %s", path));
 		RouterFunctions.Builder builder = RouterFunctions.route();
 		builder.route(GraphQlRequestPredicates.graphQlHttp(path), httpHandler::handleRequest);
@@ -119,7 +120,8 @@ public class GraphQlWebFluxAutoConfiguration {
 			GraphiQlHandler graphQlHandler = new GraphiQlHandler(path, properties.getWebsocket().getPath());
 			builder.GET(properties.getGraphiql().getPath(), graphQlHandler::handleRequest);
 		}
-		if (properties.getSchema().getPrinter().isEnabled()) {
+		GraphQlSource graphQlSource = graphQlSourceProvider.getIfAvailable();
+		if (properties.getSchema().getPrinter().isEnabled() && graphQlSource != null) {
 			SchemaHandler schemaHandler = new SchemaHandler(graphQlSource);
 			builder.GET(path + "/schema", schemaHandler::handleRequest);
 		}
@@ -158,7 +160,7 @@ public class GraphQlWebFluxAutoConfiguration {
 		public void addCorsMappings(CorsRegistry registry) {
 			CorsConfiguration configuration = this.corsProperties.toCorsConfiguration();
 			if (configuration != null) {
-				registry.addMapping(this.graphQlProperties.getPath()).combine(configuration);
+				registry.addMapping(this.graphQlProperties.getHttp().getPath()).combine(configuration);
 			}
 		}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/servlet/GraphQlWebMvcAutoConfiguration.java

@@ -37,7 +37,6 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplicat
 import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
 import org.springframework.boot.autoconfigure.graphql.GraphQlCorsProperties;
 import org.springframework.boot.autoconfigure.graphql.GraphQlProperties;
-import org.springframework.boot.autoconfigure.graphql.GraphQlProperties.Sse;
 import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
@@ -99,8 +98,7 @@ public class GraphQlWebMvcAutoConfiguration {
 	@Bean
 	@ConditionalOnMissingBean
 	public GraphQlSseHandler graphQlSseHandler(WebGraphQlHandler webGraphQlHandler, GraphQlProperties properties) {
-		Sse sse = properties.getSse();
+		return new GraphQlSseHandler(webGraphQlHandler, properties.getHttp().getSse().getTimeout());
-		return new GraphQlSseHandler(webGraphQlHandler, sse.getTimeout());
 	}
 
 	@Bean
@@ -113,8 +111,9 @@ public class GraphQlWebMvcAutoConfiguration {
 	@Bean
 	@Order(0)
 	public RouterFunction<ServerResponse> graphQlRouterFunction(GraphQlHttpHandler httpHandler,
-			GraphQlSseHandler sseHandler, GraphQlSource graphQlSource, GraphQlProperties properties) {
+			GraphQlSseHandler sseHandler, ObjectProvider<GraphQlSource> graphQlSourceProvider,
-		String path = properties.getPath();
+			GraphQlProperties properties) {
+		String path = properties.getHttp().getPath();
 		logger.info(LogMessage.format("GraphQL endpoint HTTP POST %s", path));
 		RouterFunctions.Builder builder = RouterFunctions.route();
 		builder.route(GraphQlRequestPredicates.graphQlHttp(path), httpHandler::handleRequest);
@@ -125,7 +124,8 @@ public class GraphQlWebMvcAutoConfiguration {
 			GraphiQlHandler graphiQLHandler = new GraphiQlHandler(path, properties.getWebsocket().getPath());
 			builder.GET(properties.getGraphiql().getPath(), graphiQLHandler::handleRequest);
 		}
-		if (properties.getSchema().getPrinter().isEnabled()) {
+		GraphQlSource graphQlSource = graphQlSourceProvider.getIfAvailable();
+		if (properties.getSchema().getPrinter().isEnabled() && graphQlSource != null) {
 			SchemaHandler schemaHandler = new SchemaHandler(graphQlSource);
 			builder.GET(path + "/schema", schemaHandler::handleRequest);
 		}
@@ -164,7 +164,7 @@ public class GraphQlWebMvcAutoConfiguration {
 		public void addCorsMappings(CorsRegistry registry) {
 			CorsConfiguration configuration = this.corsProperties.toCorsConfiguration();
 			if (configuration != null) {
-				registry.addMapping(this.graphQlProperties.getPath()).combine(configuration);
+				registry.addMapping(this.graphQlProperties.getHttp().getPath()).combine(configuration);
 			}
 		}
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/servlet/GraphQlWebMvcAutoConfigurationTests.java

@@ -81,7 +81,7 @@ class GraphQlWebMvcAutoConfigurationTests {
 
 	@Test
 	void shouldConfigureSseTimeout() {
-		this.contextRunner.withPropertyValues("spring.graphql.sse.timeout=10s").run((context) -> {
+		this.contextRunner.withPropertyValues("spring.graphql.http.sse.timeout=10s").run((context) -> {
 			assertThat(context).hasSingleBean(GraphQlSseHandler.class);
 			GraphQlSseHandler handler = context.getBean(GraphQlSseHandler.class);
 			assertThat(handler).hasFieldOrPropertyWithValue("timeout", Duration.ofSeconds(10));

spring-boot-project/spring-boot-docs/src/docs/antora/modules/reference/pages/web/spring-graphql.adoc

@@ -94,7 +94,7 @@ are detected by Spring Boot and considered as candidates for javadoc:graphql.sch
 
 The GraphQL HTTP endpoint is at HTTP POST `/graphql` by default.
 It also supports the `"text/event-stream"` media type over Server Sent Events for subscriptions only.
-The path can be customized with configprop:spring.graphql.path[].
+The path can be customized with configprop:spring.graphql.http.path[].
 
 TIP: The HTTP endpoint for both Spring MVC and Spring WebFlux is provided by a `RouterFunction` bean with an javadoc:org.springframework.core.annotation.Order[format=annotation] of `0`.
 If you define your own `RouterFunction` beans, you may want to add appropriate javadoc:org.springframework.core.annotation.Order[format=annotation] annotations to ensure that they are sorted correctly.

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/tester/HttpGraphQlTesterAutoConfiguration.java

@@ -43,7 +43,7 @@ public class HttpGraphQlTesterAutoConfiguration {
 	@ConditionalOnBean(WebTestClient.class)
 	@ConditionalOnMissingBean
 	public HttpGraphQlTester webTestClientGraphQlTester(WebTestClient webTestClient, GraphQlProperties properties) {
-		WebTestClient mutatedWebTestClient = webTestClient.mutate().baseUrl(properties.getPath()).build();
+		WebTestClient mutatedWebTestClient = webTestClient.mutate().baseUrl(properties.getHttp().getPath()).build();
 		return HttpGraphQlTester.create(mutatedWebTestClient);
 	}
 

spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/graphql/tester/HttpGraphQlTesterContextCustomizer.java

@@ -171,7 +171,7 @@ class HttpGraphQlTesterContextCustomizer implements ContextCustomizer {
 		}
 
 		private String findConfiguredGraphQlPath() {
-			String configuredPath = this.applicationContext.getEnvironment().getProperty("spring.graphql.path");
+			String configuredPath = this.applicationContext.getEnvironment().getProperty("spring.graphql.http.path");
 			return StringUtils.hasText(configuredPath) ? configuredPath : "/graphql";
 		}