Correctly retrieve operation from request body

Backport of e74240 and 5be2d8.

Closes gh-819

spring-graphql/src/main/java/org/springframework/graphql/server/RSocketGraphQlRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2022 the original author or authors.
+ * Copyright 2020-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -43,8 +43,8 @@ public class RSocketGraphQlRequest extends DefaultExecutionGraphQlRequest implem
 	 * @param locale the locale from the HTTP request, if any
 	 */
 	public RSocketGraphQlRequest(Map<String, Object> body, String id, @Nullable Locale locale) {
-		super(getKey("query", body), getKey("operationName", body), getKey("variables", body),
-				getKey("extensions", body), id, locale);
+		super(getKey(QUERY_KEY, body), getKey(OPERATION_NAME_KEY, body),
+				getKey(VARIABLES_KEY, body), getKey(EXTENSIONS_KEY, body), id, locale);
 	}
 
 	@SuppressWarnings("unchecked")

spring-graphql/src/main/java/org/springframework/graphql/server/WebGraphQlRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2022 the original author or authors.
+ * Copyright 2020-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -58,7 +58,8 @@ public class WebGraphQlRequest extends DefaultExecutionGraphQlRequest implements
 	public WebGraphQlRequest(
 			URI uri, HttpHeaders headers, Map<String, Object> body, String id, @Nullable Locale locale) {
 
-		super(getQuery(body), getOperation(body), getMap("variables", body), getMap("extensions", body), id, locale);
+		super(getQuery(body), getOperation(body),
+				getMap(VARIABLES_KEY, body), getMap(EXTENSIONS_KEY, body), id, locale);
 
 		Assert.notNull(uri, "URI is required'");
 		Assert.notNull(headers, "HttpHeaders is required'");
@@ -68,18 +69,18 @@ public class WebGraphQlRequest extends DefaultExecutionGraphQlRequest implements
 	}
 
 	private static String getQuery(Map<String, Object> body) {
-		Object value = body.get("query");
+		Object value = body.get(QUERY_KEY);
 		if (!(value instanceof String) || !StringUtils.hasText((String) value)) {
-			throw new ServerWebInputException("Invalid value for 'query'");
+			throw new ServerWebInputException("Invalid value for '" + QUERY_KEY + "'");
 		}
 		return (String) value;
 	}
 
 	@Nullable
 	private static String getOperation(Map<String, Object> body) {
-		Object value = body.get("operation");
+		Object value = body.get(OPERATION_NAME_KEY);
 		if (value != null && !(value instanceof String)) {
-			throw new ServerWebInputException("Invalid value for 'operation'");
+			throw new ServerWebInputException("Invalid value for '" + OPERATION_NAME_KEY + "'");
 		}
 		return (String) value;
 	}

spring-graphql/src/main/java/org/springframework/graphql/support/DefaultGraphQlRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -35,6 +35,15 @@ import org.springframework.util.ObjectUtils;
  */
 public class DefaultGraphQlRequest implements GraphQlRequest {
 
+	protected static final String QUERY_KEY = "query";
+
+	protected static final String OPERATION_NAME_KEY = "operationName";
+
+	protected static final String VARIABLES_KEY = "variables";
+
+	protected static final String EXTENSIONS_KEY = "extensions";
+
+
 	private final String document;
 
 	@Nullable
@@ -96,15 +105,15 @@ public class DefaultGraphQlRequest implements GraphQlRequest {
 	@Override
 	public Map<String, Object> toMap() {
 		Map<String, Object> map = new LinkedHashMap<>(3);
-		map.put("query", getDocument());
+		map.put(QUERY_KEY, getDocument());
 		if (getOperationName() != null) {
-			map.put("operationName", getOperationName());
+			map.put(OPERATION_NAME_KEY, getOperationName());
 		}
 		if (!CollectionUtils.isEmpty(getVariables())) {
-			map.put("variables", new LinkedHashMap<>(getVariables()));
+			map.put(VARIABLES_KEY, new LinkedHashMap<>(getVariables()));
 		}
 		if (!CollectionUtils.isEmpty(getExtensions())) {
-			map.put("extensions", new LinkedHashMap<>(getExtensions()));
+			map.put(EXTENSIONS_KEY, new LinkedHashMap<>(getExtensions()));
 		}
 		return map;
 	}

spring-graphql/src/test/java/org/springframework/graphql/server/WebGraphQlRequestTests.java

@@ -24,7 +24,6 @@ import java.util.Map;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.http.HttpHeaders;
-import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.web.server.ServerWebInputException;
 
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
@@ -39,17 +38,21 @@ public class WebGraphQlRequestTests {
 	@Test  // gh-726
 	void invalidBody() {
 		testInvalidBody(new HashMap<>());
+
 		Map<String, Object> empty = new HashMap<>();
 		empty.put("query", Collections.emptyMap());
 		testInvalidBody(empty);
+
 		Map<String, Object> emptyOperations = new HashMap<>();
 		emptyOperations.put("query", "query { foo }");
 		emptyOperations.put("operation", Collections.emptyMap());
 		testInvalidBody(emptyOperations);
+
 		Map<String, Object> invalidVariables = new HashMap<>();
 		invalidVariables.put("query", "query { foo }");
 		invalidVariables.put("variables", "not-a-map");
 		testInvalidBody(invalidVariables);
+
 		Map<String, Object> invalidExtensions = new HashMap<>();
 		invalidExtensions.put("query", "query { foo }");
 		invalidExtensions.put("extensions", "not-a-map");

spring-graphql/src/test/java/org/springframework/graphql/support/DefaultGraphQlRequestTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2022 the original author or authors.
+ * Copyright 2020-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,8 @@ import java.util.Map;
 
 import org.junit.jupiter.api.Test;
 
+import org.springframework.graphql.GraphQlRequest;
+
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
@@ -31,19 +33,24 @@ class DefaultGraphQlRequestTests {
 
 	@Test
 	void requestAsMapShouldContainAllEntries() {
+
 		String document = "query HeroNameAndFriends($episode: Episode) {" +
 				"  hero(episode: $episode) {" +
 				"    name"
 				+ "  }" +
 				"}";
+
 		Map<String, Object> variables = Collections.singletonMap("episode", "JEDI");
 		Map<String, Object> extensions = Collections.singletonMap("myExtension", "value");
 
-		DefaultExecutionGraphQlRequest request = new DefaultExecutionGraphQlRequest(document, "HeroNameAndFriends",
-				variables, extensions, "1", null);
+		GraphQlRequest request = new DefaultExecutionGraphQlRequest(
+				document, "HeroNameAndFriends", variables, extensions, "1", null);
 
-		assertThat(request.toMap()).containsEntry("query", document).containsEntry("operationName", "HeroNameAndFriends")
-				.containsEntry("variables", variables).containsEntry("extensions", extensions);
+		assertThat(request.toMap())
+				.containsEntry("query", document)
+				.containsEntry("operationName", "HeroNameAndFriends")
+				.containsEntry("variables", variables)
+				.containsEntry("extensions", extensions);
 	}
 
 }