@graphql-tools/executor-envelop
Version:
A set of utils for faster development of GraphQL tools
113 lines (112 loc) • 4.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.useExecutor = void 0;
const utils_1 = require("@graphql-tools/utils");
const wrap_1 = require("@graphql-tools/wrap");
function useExecutor(executor, opts) {
const EMPTY_ARRAY = Object.freeze([]);
function executorToExecuteFn(executionArgs) {
return executor({
document: executionArgs.document,
rootValue: executionArgs.rootValue,
context: executionArgs.contextValue,
variables: executionArgs.variableValues,
operationName: executionArgs.operationName,
});
}
const pluginCtx = {
schema$: undefined,
schema: undefined,
schemaSetPromise$: undefined,
skipIntrospection: false,
};
if (opts?.polling) {
setInterval(() => {
pluginCtx.schema$ = undefined;
pluginCtx.schema = undefined;
}, opts.polling);
}
function ensureSchema(ctx) {
if (pluginCtx.skipIntrospection) {
return;
}
try {
if (!pluginCtx.schema && !pluginCtx.schemaSetPromise$) {
pluginCtx.schema$ ||= (0, wrap_1.schemaFromExecutor)(executor, ctx, opts);
if ((0, utils_1.isPromise)(pluginCtx.schema$)) {
pluginCtx.schemaSetPromise$ = pluginCtx.schema$.then(newSchema => {
pluginCtx.schema = newSchema;
}).catch?.(err => {
console.warn(`Introspection failed, skipping introspection due to the following errors;\n`, err);
pluginCtx.skipIntrospection = true;
});
}
else {
pluginCtx.schema = pluginCtx.schema$;
}
}
}
catch (err) {
pluginCtx.skipIntrospection = true;
console.warn(`Introspection failed, skipping introspection due to the following errors;\n`, err);
}
}
return {
onEnveloped({ context, setSchema }) {
ensureSchema(context);
if (pluginCtx.schema) {
setSchema(pluginCtx.schema);
}
},
onContextBuilding() {
ensureSchema();
if (pluginCtx.schemaSetPromise$) {
return pluginCtx.schemaSetPromise$;
}
},
onExecute({ args, setExecuteFn }) {
if (args.schema) {
pluginCtx.schema = args.schema;
pluginCtx.schema$ = pluginCtx.schema;
}
ensureSchema(args.contextValue);
if ((0, utils_1.isPromise)(pluginCtx.schemaSetPromise$)) {
return pluginCtx.schemaSetPromise$.then(() => {
setExecuteFn(executorToExecuteFn);
});
}
setExecuteFn(executorToExecuteFn);
},
onSubscribe({ args, setSubscribeFn }) {
if (args.schema) {
pluginCtx.schema = args.schema;
pluginCtx.schema$ = pluginCtx.schema;
}
ensureSchema(args.contextValue);
if ((0, utils_1.isPromise)(pluginCtx.schemaSetPromise$)) {
return pluginCtx.schemaSetPromise$.then(() => {
setSubscribeFn(executorToExecuteFn);
});
}
setSubscribeFn(executorToExecuteFn);
},
onValidate({ params, context, setResult }) {
if (params.schema) {
pluginCtx.schema = params.schema;
pluginCtx.schema$ = pluginCtx.schema;
}
ensureSchema(context);
if (pluginCtx.schema?.[Symbol.toStringTag] !== 'GraphQLSchema') {
setResult(EMPTY_ARRAY);
}
},
pluginCtx,
ensureSchema,
invalidateUnifiedGraph() {
pluginCtx.schema$ = undefined;
pluginCtx.schema = undefined;
pluginCtx.skipIntrospection = false;
},
};
}
exports.useExecutor = useExecutor;