@restorecommerce/chassis-srv/lib/microservice/transport/provider/grpc/index.js

Restore Commerce microservice chassis

import { isNullish } from 'remeda';
import { createServer } from 'nice-grpc';
import { loggingMiddleware, metaMiddleware, tracingMiddleware } from './middlewares.js';
/**
 * Name of the transport
 */
export const NAME = 'grpc';
/**
 * Server transport provider.
 * @class
 */
export class Server {
    config;
    logger;
    server;
    name;
    isBound;
    /**
     * Server is a gRPC transport provider for serving.
     *
     * @param {Object} config Configuration object.
     * Requires properties: addr
     * Optional properties: credentials.ssl.certs
     * @param {Logger} logger Logger.
     */
    constructor(config, logger) {
        if (isNullish(logger)) {
            throw new Error('gRPC server transport provider requires a logger');
        }
        if (!('addr' in config)) {
            throw new Error('server is missing addr config field');
        }
        this.config = config;
        this.logger = logger;
        this.server = createServer(config?.channelOptions)
            .use(tracingMiddleware)
            .use(metaMiddleware)
            .use(loggingMiddleware(this.logger));
        this.name = NAME;
    }
    /**
     * bind maps the service to gRPC methods and binds the address.
     *
     * @param {BindConfig} config Service bind config.
     */
    bind(config) {
        this.server.add(config.service, config.implementation);
    }
    /**
     * start launches the gRPC server and provides the service endpoints.
     */
    async start() {
        if (!this.isBound) {
            // TODO Re-enable
            // if (_.has(this.config, 'credentials.ssl')) {
            // credentials = grpc.credentials.createSsl(
            //   this.config.credentials.ssl.certs);
            // }
            await this.server.listen(this.config.addr).catch(err => {
                this.logger.error('Error starting server', { message: err.message, code: err.code, stack: err.stack });
                throw err;
            });
            this.isBound = true;
        }
    }
    /**
     * end stops the gRPC server and no longer provides the service endpoints.
     */
    async end() {
        this.server.forceShutdown();
    }
}
export { Server as grpcServer };
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