Examples with SchemaTransformer graphql.schema.SchemaTransformer used on opensource projects

Example 1 with SchemaTransformer

use of graphql.schema.SchemaTransformer in project graphql-java by graphql-java.

the class Anonymizer method anonymizeSchemaAndQueries.

public static AnonymizeResult anonymizeSchemaAndQueries(GraphQLSchema schema, List<String> queries, Map<String, Object> variables) {
    assertNotNull(queries, () -> "queries can't be null");
    AtomicInteger defaultStringValueCounter = new AtomicInteger(1);
    AtomicInteger defaultIntValueCounter = new AtomicInteger(1);
    Map<GraphQLNamedSchemaElement, String> newNameMap = recordNewNamesForSchema(schema);
    // stores a reverse index of anonymized argument name to argument instance
    // this is to handle cases where the fields on implementing types MUST have the same exact argument and default
    // value definitions as the fields on the implemented interface. (argument default values must match exactly)
    Map<String, GraphQLArgument> renamedArgumentsMap = new HashMap<>();
    SchemaTransformer schemaTransformer = new SchemaTransformer();
    GraphQLSchema newSchema = schemaTransformer.transform(schema, new GraphQLTypeVisitorStub() {

        @Override
        public TraversalControl visitGraphQLTypeReference(GraphQLTypeReference graphQLTypeReference, TraverserContext<GraphQLSchemaElement> context) {
            GraphQLNamedSchemaElement type = (GraphQLNamedSchemaElement) schema.getType(graphQLTypeReference.getName());
            String newName = newNameMap.get(type);
            GraphQLTypeReference newReference = GraphQLTypeReference.typeRef(newName);
            return changeNode(context, newReference);
        }

        @Override
        public TraversalControl visitGraphQLArgument(GraphQLArgument graphQLArgument, TraverserContext<GraphQLSchemaElement> context) {
            String newName = assertNotNull(newNameMap.get(graphQLArgument));
            if (context.getParentNode() instanceof GraphQLFieldDefinition) {
                // arguments on field definitions must be identical across implementing types and interfaces.
                if (renamedArgumentsMap.containsKey(newName)) {
                    return changeNode(context, renamedArgumentsMap.get(newName).transform(b -> {
                    }));
                }
            }
            GraphQLArgument newElement = graphQLArgument.transform(builder -> {
                builder.name(newName).description(null).definition(null);
                if (graphQLArgument.hasSetDefaultValue()) {
                    Value<?> defaultValueLiteral = ValuesResolver.valueToLiteral(graphQLArgument.getArgumentDefaultValue(), graphQLArgument.getType());
                    builder.defaultValueLiteral(replaceValue(defaultValueLiteral, graphQLArgument.getType(), newNameMap, defaultStringValueCounter, defaultIntValueCounter));
                }
                if (graphQLArgument.hasSetValue()) {
                    Value<?> valueLiteral = ValuesResolver.valueToLiteral(graphQLArgument.getArgumentValue(), graphQLArgument.getType());
                    builder.valueLiteral(replaceValue(valueLiteral, graphQLArgument.getType(), newNameMap, defaultStringValueCounter, defaultIntValueCounter));
                }
            });
            renamedArgumentsMap.put(newName, newElement);
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLAppliedDirectiveArgument(GraphQLAppliedDirectiveArgument graphQLArgument, TraverserContext<GraphQLSchemaElement> context) {
            String newName = assertNotNull(newNameMap.get(graphQLArgument));
            GraphQLAppliedDirectiveArgument newElement = graphQLArgument.transform(builder -> {
                builder.name(newName).description(null).definition(null);
                if (graphQLArgument.hasSetValue()) {
                    Value<?> valueLiteral = ValuesResolver.valueToLiteral(graphQLArgument.getArgumentValue(), graphQLArgument.getType());
                    builder.valueLiteral(replaceValue(valueLiteral, graphQLArgument.getType(), newNameMap, defaultStringValueCounter, defaultIntValueCounter));
                }
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLInterfaceType(GraphQLInterfaceType graphQLInterfaceType, TraverserContext<GraphQLSchemaElement> context) {
            if (Introspection.isIntrospectionTypes(graphQLInterfaceType)) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLInterfaceType));
            GraphQLInterfaceType newElement = graphQLInterfaceType.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            GraphQLCodeRegistry.Builder codeRegistry = assertNotNull(context.getVarFromParents(GraphQLCodeRegistry.Builder.class));
            TypeResolver typeResolver = codeRegistry.getTypeResolver(graphQLInterfaceType);
            codeRegistry.typeResolver(newName, typeResolver);
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLEnumType(GraphQLEnumType graphQLEnumType, TraverserContext<GraphQLSchemaElement> context) {
            if (Introspection.isIntrospectionTypes(graphQLEnumType)) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLEnumType));
            GraphQLEnumType newElement = graphQLEnumType.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLEnumValueDefinition(GraphQLEnumValueDefinition enumValueDefinition, TraverserContext<GraphQLSchemaElement> context) {
            String newName = assertNotNull(newNameMap.get(enumValueDefinition));
            GraphQLEnumValueDefinition newElement = enumValueDefinition.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLFieldDefinition(GraphQLFieldDefinition graphQLFieldDefinition, TraverserContext<GraphQLSchemaElement> context) {
            String newName = assertNotNull(newNameMap.get(graphQLFieldDefinition));
            GraphQLFieldDefinition newElement = graphQLFieldDefinition.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLDirective(GraphQLDirective graphQLDirective, TraverserContext<GraphQLSchemaElement> context) {
            if (Directives.DEPRECATED_DIRECTIVE_DEFINITION.getName().equals(graphQLDirective.getName())) {
                GraphQLArgument reason = newArgument().name("reason").type(Scalars.GraphQLString).clearValue().build();
                GraphQLDirective newElement = graphQLDirective.transform(builder -> {
                    builder.description(null).argument(reason);
                });
                changeNode(context, newElement);
                return TraversalControl.ABORT;
            }
            if (DirectiveInfo.isGraphqlSpecifiedDirective(graphQLDirective.getName())) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLDirective));
            GraphQLDirective newElement = graphQLDirective.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLAppliedDirective(GraphQLAppliedDirective graphQLDirective, TraverserContext<GraphQLSchemaElement> context) {
            if (Directives.DEPRECATED_DIRECTIVE_DEFINITION.getName().equals(graphQLDirective.getName())) {
                GraphQLAppliedDirectiveArgument reason = GraphQLAppliedDirectiveArgument.newArgument().name("reason").type(Scalars.GraphQLString).clearValue().build();
                GraphQLAppliedDirective newElement = graphQLDirective.transform(builder -> {
                    builder.description(null).argument(reason);
                });
                changeNode(context, newElement);
                return TraversalControl.ABORT;
            }
            if (DirectiveInfo.isGraphqlSpecifiedDirective(graphQLDirective.getName())) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLDirective));
            GraphQLAppliedDirective newElement = graphQLDirective.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLInputObjectField(GraphQLInputObjectField graphQLInputObjectField, TraverserContext<GraphQLSchemaElement> context) {
            String newName = assertNotNull(newNameMap.get(graphQLInputObjectField));
            Value<?> defaultValue = null;
            if (graphQLInputObjectField.hasSetDefaultValue()) {
                defaultValue = ValuesResolver.valueToLiteral(graphQLInputObjectField.getInputFieldDefaultValue(), graphQLInputObjectField.getType());
                defaultValue = replaceValue(defaultValue, graphQLInputObjectField.getType(), newNameMap, defaultStringValueCounter, defaultIntValueCounter);
            }
            Value<?> finalDefaultValue = defaultValue;
            GraphQLInputObjectField newElement = graphQLInputObjectField.transform(builder -> {
                builder.name(newName);
                if (finalDefaultValue != null) {
                    builder.defaultValueLiteral(finalDefaultValue);
                }
                builder.description(null);
                builder.definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLInputObjectType(GraphQLInputObjectType graphQLInputObjectType, TraverserContext<GraphQLSchemaElement> context) {
            if (Introspection.isIntrospectionTypes(graphQLInputObjectType)) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLInputObjectType));
            GraphQLInputObjectType newElement = graphQLInputObjectType.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLObjectType(GraphQLObjectType graphQLObjectType, TraverserContext<GraphQLSchemaElement> context) {
            if (Introspection.isIntrospectionTypes(graphQLObjectType)) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLObjectType));
            GraphQLObjectType newElement = graphQLObjectType.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLScalarType(GraphQLScalarType graphQLScalarType, TraverserContext<GraphQLSchemaElement> context) {
            if (ScalarInfo.isGraphqlSpecifiedScalar(graphQLScalarType)) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLScalarType));
            GraphQLScalarType newElement = graphQLScalarType.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            return changeNode(context, newElement);
        }

        @Override
        public TraversalControl visitGraphQLUnionType(GraphQLUnionType graphQLUnionType, TraverserContext<GraphQLSchemaElement> context) {
            if (Introspection.isIntrospectionTypes(graphQLUnionType)) {
                return TraversalControl.ABORT;
            }
            String newName = assertNotNull(newNameMap.get(graphQLUnionType));
            GraphQLUnionType newElement = graphQLUnionType.transform(builder -> {
                builder.name(newName).description(null).definition(null);
            });
            GraphQLCodeRegistry.Builder codeRegistry = assertNotNull(context.getVarFromParents(GraphQLCodeRegistry.Builder.class));
            TypeResolver typeResolver = codeRegistry.getTypeResolver(graphQLUnionType);
            codeRegistry.typeResolver(newName, typeResolver);
            return changeNode(context, newElement);
        }
    });
    List<String> newQueries = new ArrayList<>();
    for (String query : queries) {
        String newQuery = rewriteQuery(query, schema, newNameMap, variables);
        newQueries.add(newQuery);
    }
    AnonymizeResult result = new AnonymizeResult(newSchema, newQueries);
    return result;
}