graphql#IntrospectionQuery TypeScript Examples

The following examples show how to use graphql#IntrospectionQuery. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: index.ts    From graphql-mesh with MIT License 5 votes vote down vote up 
async getNonExecutableSchemaForHTTPSource(
    httpSourceConfig: YamlConfig.GraphQLHandlerHTTPConfiguration
  ): Promise<GraphQLSchema> {
    const schemaHeadersFactory = getInterpolatedHeadersFactory(httpSourceConfig.schemaHeaders || {});
    const customFetch = await this.getCustomFetchImpl(httpSourceConfig.customFetch);
    if (httpSourceConfig.introspection) {
      const headers = schemaHeadersFactory({
        env: process.env,
      });
      const sdlOrIntrospection = await readFileOrUrl<string | IntrospectionQuery | DocumentNode>(
        httpSourceConfig.introspection,
        {
          cwd: this.baseDir,
          allowUnknownExtensions: true,
          fetch: customFetch,
          headers,
        }
      );
      if (typeof sdlOrIntrospection === 'string') {
        return buildSchema(sdlOrIntrospection);
      } else if (isDocumentNode(sdlOrIntrospection)) {
        return buildASTSchema(sdlOrIntrospection);
      } else if (sdlOrIntrospection.__schema) {
        return buildClientSchema(sdlOrIntrospection);
      }
      throw new Error(`Invalid introspection data: ${util.inspect(sdlOrIntrospection)}`);
    }
    return this.nonExecutableSchema.getWithSet(() => {
      const endpointFactory = getInterpolatedStringFactory(httpSourceConfig.endpoint);
      const executor = this.urlLoader.getExecutorAsync(httpSourceConfig.endpoint, {
        ...httpSourceConfig,
        customFetch,
        subscriptionsProtocol: httpSourceConfig.subscriptionsProtocol as SubscriptionProtocol,
      });
      return introspectSchema(function meshIntrospectionExecutor(params: ExecutionRequest) {
        const resolverData = getResolverData(params);
        return executor({
          ...params,
          extensions: {
            ...params.extensions,
            headers: schemaHeadersFactory(resolverData),
            endpoint: endpointFactory(resolverData),
          },
        });
      });
    });
  }