app/src/app.js
const config = require('config');
const logger = require('logger');
const path = require('path');
const Koa = require('koa');
const koaLogger = require('koa-logger');
const loader = require('loader');
const koaValidate = require('koa-validate');
const { koaBody } = require('koa-body');
const koaSimpleHealthCheck = require('koa-simple-healthcheck');
const ErrorSerializer = require('serializers/errorSerializer');
const { RWAPIMicroservice } = require('rw-api-microservice-node');
// instance of koa
const app = new Koa();
app.use(koaLogger());
app.use(async (ctx, next) => {
try {
await next();
} catch (inErr) {
let error = inErr;
try {
error = JSON.parse(inErr);
} catch (e) {
logger.debug('Could not parse error message - is it JSON?: ', inErr);
error = inErr;
}
ctx.status = error.status || ctx.status || 500;
if (ctx.status >= 500) {
logger.error(error);
} else {
logger.info(error);
}
ctx.body = ErrorSerializer.serializeError(ctx.status, error.message);
if (process.env.NODE_ENV === 'prod' && ctx.status === 500) {
ctx.body = 'Unexpected error';
}
ctx.response.type = 'application/vnd.api+json';
}
});
app.use(koaBody({
multipart: true,
formidable: {
uploadDir: '/tmp',
onFileBegin(name, file) {
const folder = path.dirname(file.filepath);
file.filepath = path.join(folder, file.originalFilename);
}
}
}));
// load custom validator
koaValidate(app);
app.use(koaSimpleHealthCheck());
app.use(RWAPIMicroservice.bootstrap({
logger,
gatewayURL: process.env.GATEWAY_URL,
microserviceToken: process.env.MICROSERVICE_TOKEN,
fastlyEnabled: process.env.FASTLY_ENABLED,
fastlyServiceId: process.env.FASTLY_SERVICEID,
fastlyAPIKey: process.env.FASTLY_APIKEY,
requireAPIKey: process.env.REQUIRE_API_KEY || true,
awsCloudWatchLoggingEnabled: process.env.AWS_CLOUD_WATCH_LOGGING_ENABLED || true,
awsRegion: process.env.AWS_REGION,
awsCloudWatchLogStreamName: config.get('service.name'),
}));
// load routes
loader.loadRoutes(app);
const server = app.listen(process.env.PORT, () => {
logger.info(`Server started in port:${process.env.PORT}`);
});
module.exports = server;