@apollo/federation
Version:
Apollo Federation Utilities
106 lines • 5.23 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.UniqueFieldDefinitionNames = exports.existedFieldDefinitionNameMessage = exports.duplicateFieldDefinitionNameMessage = void 0;
const graphql_1 = require("graphql");
const utils_1 = require("../../utils");
function duplicateFieldDefinitionNameMessage(typeName, fieldName) {
return `Field "${typeName}.${fieldName}" can only be defined once.`;
}
exports.duplicateFieldDefinitionNameMessage = duplicateFieldDefinitionNameMessage;
function existedFieldDefinitionNameMessage(typeName, fieldName, serviceName) {
return `${(0, utils_1.logServiceAndType)(serviceName, typeName, fieldName)}Field "${typeName}.${fieldName}" already exists in the schema. It cannot also be defined in this type extension. If this is meant to be an external field, add the \`@external\` directive.`;
}
exports.existedFieldDefinitionNameMessage = existedFieldDefinitionNameMessage;
function UniqueFieldDefinitionNames(context) {
const schema = context.getSchema();
const existingTypeMap = schema
? schema.getTypeMap()
: Object.create(null);
const knownFieldNames = Object.create(null);
const possibleValueTypes = Object.create(null);
return {
InputObjectTypeExtension: checkFieldUniqueness,
InterfaceTypeExtension: checkFieldUniqueness,
ObjectTypeExtension: checkFieldUniqueness,
InputObjectTypeDefinition: checkFieldUniquenessExcludingValueTypes,
InterfaceTypeDefinition: checkFieldUniquenessExcludingValueTypes,
ObjectTypeDefinition: checkFieldUniquenessExcludingValueTypes,
};
function checkFieldUniqueness(node) {
var _a;
const typeName = node.name.value;
if (!knownFieldNames[typeName]) {
knownFieldNames[typeName] = Object.create(null);
}
if (!node.fields) {
return false;
}
const fieldNames = knownFieldNames[typeName];
for (const fieldDef of node.fields) {
const fieldName = fieldDef.name.value;
if (hasField(existingTypeMap[typeName], fieldName)) {
const type = existingTypeMap[typeName];
context.reportError(new graphql_1.GraphQLError(existedFieldDefinitionNameMessage(typeName, fieldName, (_a = node.serviceName) !== null && _a !== void 0 ? _a : ''), (0, graphql_1.isObjectType)(type) || (0, graphql_1.isInterfaceType)(type) || (0, graphql_1.isInputObjectType)(type) ?
type.getFields()[fieldName].astNode : undefined));
}
else if (fieldNames[fieldName]) {
context.reportError(new graphql_1.GraphQLError(duplicateFieldDefinitionNameMessage(typeName, fieldName), [fieldNames[fieldName], fieldDef.name]));
}
else {
fieldNames[fieldName] = fieldDef.name;
}
}
return false;
}
function checkFieldUniquenessExcludingValueTypes(node) {
const typeName = node.name.value;
const valueTypeFromSchema = existingTypeMap[typeName] &&
existingTypeMap[typeName].astNode;
const duplicateTypeNode = valueTypeFromSchema || possibleValueTypes[node.name.value];
if (duplicateTypeNode) {
const { fields, fieldArgs } = (0, utils_1.diffTypeNodes)(node, duplicateTypeNode);
if (Object.values(fields).every(diffEntry => diffEntry.length === 2)) {
return false;
}
const fieldArgDiffs = Object.values(fieldArgs);
for (const argDiff of fieldArgDiffs) {
const argTypes = Object.values(argDiff);
if (argTypes.length > 0 &&
argTypes.every((diffEntry) => diffEntry.length === 2)) {
return false;
}
}
}
else {
possibleValueTypes[node.name.value] = node;
}
if (!knownFieldNames[typeName]) {
knownFieldNames[typeName] = Object.create(null);
}
if (!node.fields) {
return false;
}
const fieldNames = knownFieldNames[typeName];
for (const fieldDef of node.fields) {
const fieldName = fieldDef.name.value;
if (hasField(existingTypeMap[typeName], fieldName)) {
context.reportError(new graphql_1.GraphQLError(existedFieldDefinitionNameMessage(typeName, fieldName, existingTypeMap[typeName].astNode.serviceName), fieldDef.name));
}
else if (fieldNames[fieldName]) {
context.reportError(new graphql_1.GraphQLError(duplicateFieldDefinitionNameMessage(typeName, fieldName), [fieldNames[fieldName], fieldDef.name]));
}
else {
fieldNames[fieldName] = fieldDef.name;
}
}
return false;
}
}
exports.UniqueFieldDefinitionNames = UniqueFieldDefinitionNames;
function hasField(type, fieldName) {
if ((0, graphql_1.isObjectType)(type) || (0, graphql_1.isInterfaceType)(type) || (0, graphql_1.isInputObjectType)(type)) {
return Boolean(type.getFields()[fieldName]);
}
return false;
}
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