Remove configuration key for GraphQL schema path

Currently, the GraphQL schema is exposed under /graphql/schema (so
relative to the main graphql endpoint) and is configurable with the
`spring.graphql.schema.printer.path` configuration property.

We think we should make the schema location more consistent to help
tools and various Gateway products. Also, we don't see right now a
strong use case for such a configuration property.

This commit removes the configuration property and sets the schema
location under `/graphql/schema`(`/graphql` being the main graphql path
configured by the application).

Closes gh-79

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

@@ -98,11 +98,6 @@ public static class Printer {
 			 */
 			private boolean enabled = false;
 
-			/**
-			 * Path under the main GraphQL path where the schema is exposed.
-			 */
-			private String path = "/schema";
-
 			public boolean isEnabled() {
 				return this.enabled;
 			}
@@ -111,14 +106,6 @@ public void setEnabled(boolean enabled) {
 				this.enabled = enabled;
 			}
 
-			public String getPath() {
-				return this.path;
-			}
-
-			public void setPath(String path) {
-				this.path = path;
-			}
-
 		}
 
 	}

graphql-spring-boot-starter/src/main/java/org/springframework/graphql/boot/GraphQlWebFluxAutoConfiguration.java

@@ -20,7 +20,6 @@
 import java.util.stream.Collectors;
 
 import graphql.GraphQL;
-import graphql.schema.idl.SchemaPrinter;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
@@ -115,8 +114,7 @@ public RouterFunction<ServerResponse> graphQlEndpoint(GraphQlHttpHandler handler
 
 		if (properties.getSchema().getPrinter().isEnabled()) {
 			SchemaHandler schemaHandler = new SchemaHandler(graphQlSource);
-			String schemaPath = properties.getSchema().getPrinter().getPath();
-			builder = builder.GET(graphQLPath + schemaPath, schemaHandler::handleRequest);
+			builder = builder.GET(graphQLPath + "/schema", schemaHandler::handleRequest);
 		}
 
 		return builder.build();

graphql-spring-boot-starter/src/main/java/org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.java

@@ -124,8 +124,7 @@ public RouterFunction<ServerResponse> graphQlRouterFunction(GraphQlHttpHandler h
 
 		if (properties.getSchema().getPrinter().isEnabled()) {
 			SchemaHandler schemaHandler = new SchemaHandler(graphQlSource);
-			String schemaPath = properties.getSchema().getPrinter().getPath();
-			builder = builder.GET(graphQLPath + schemaPath, schemaHandler::handleRequest);
+			builder = builder.GET(graphQLPath + "/schema", schemaHandler::handleRequest);
 		}
 
 		return builder.build();

spring-graphql-docs/src/docs/asciidoc/index.adoc

@@ -183,7 +183,8 @@ schema locations to check as follows:
 spring.graphql.schema.locations=classpath:graphql/
 ----
 
-The GraphQL schema can be viewed over HTTP at "/graphql/schema", if enabled:
+The GraphQL schema can be viewed over HTTP at "/graphql/schema", relative to the main graphql endpoint path.
+It is disabled by default:
 
 [source,properties,indent=0,subs="verbatim,quotes"]
 ----