@theguild/federation-composition
Version:
Open Source Composition library for Apollo Federation
56 lines (55 loc) • 2.71 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ComposeDirectiveRules = ComposeDirectiveRules;
const graphql_1 = require("graphql");
const helpers_js_1 = require("../../../helpers.js");
function ComposeDirectiveRules(context) {
return {
DirectiveDefinition(node) {
(0, helpers_js_1.validateDirectiveAgainstOriginal)(node, "composeDirective", context);
},
Directive(node) {
if (!context.isAvailableFederationDirective("composeDirective", node)) {
return;
}
if (!context.satisfiesVersionRange(">= v2.1")) {
return;
}
const nameArg = node.arguments?.find((arg) => arg.name.value === "name");
if (!nameArg || nameArg.value.kind !== graphql_1.Kind.STRING) {
return;
}
const name = nameArg.value.value.replace(/^@/, "");
const definedDirectives = context
.getDocument()
.definitions.filter(helpers_js_1.isDirectiveDefinitionNode);
const matchingDirective = definedDirectives.find((directive) => directive.name.value === name);
if (matchingDirective) {
const hasSpec = context.stateBuilder.state.links.some((link) => link.imports.some((im) => im.kind === "directive" &&
(im.alias
? im.alias.replace(/^@/, "") === name
: im.name.replace(/^@/, "") === name)));
if (!hasSpec) {
context.reportError(new graphql_1.GraphQLError(`Directive "@${name}" in subgraph "${context.getSubgraphName()}" cannot be composed because it is not a member of a core feature`, {
extensions: {
code: "DIRECTIVE_COMPOSITION_ERROR",
subgraphName: context.getSubgraphName(),
},
}));
return;
}
context.stateBuilder.directive.setComposed(matchingDirective.name.value);
context.stateBuilder.composedDirectives.add(matchingDirective.name.value);
}
else {
context.reportError(new graphql_1.GraphQLError(`Could not find matching directive definition for argument to @composeDirective "@${name}" in subgraph "${context.getSubgraphName()}".`, {
nodes: node,
extensions: {
code: "DIRECTIVE_COMPOSITION_ERROR",
subgraphName: context.getSubgraphName(),
},
}));
}
},
};
}