now-flow/src/providers/gcp/util/get-function-handler.js

Add deployment workflows to Zeit now

const getHandler = require('../../../serverless/get-handler')

const getFunctionHandler = desc => {
	// the command that our handler will invoke to fire up
	// the user-suppled HTTP server
	let cmd = null
	let script = null

	if (desc.packageJSON) {
		if (desc.packageJSON.scripts && desc.packageJSON.scripts.start) {
			cmd = desc.packageJSON.scripts.start
		} else {
			// `node .` will use `main` or fallback to `index.js`
			script = './'
		}
	} else {
		if (desc.hasServerJSFile) {
			script = 'server.js'
		} else {
			script = 'index.js'
		}
	}

	return getHandler({ cmd, script }, (makeRequest, getPort, req, res) => {
		let body

		/*eslint-disable */
		if ('object' === typeof req.body && !(body instanceof Buffer)) {
			/*eslint-enable */
			body = JSON.stringify(req.body)
		} else {
			body = req.body
		}

		console.log('got request', req.url, req.method, req.headers)
		const proxyRequest = makeRequest(
			{
				port: getPort(),
				hostname: '127.0.0.1',
				// TODO: figure out how to get the path?
				path: req.url,
				method: req.method,
				headers: req.headers
			},
			proxyRes => {
				proxyRes.on('data', data => {
					res.write(data)
				})
				proxyRes.on('error', err => {
					console.error(err)
					res.status(500).end()
				})
				proxyRes.on('end', () => {
					res.end()
				})
			}
		)
		proxyRequest.on('error', err => {
			console.error(err)
			res.status(500).end()
		})
		proxyRequest.end(body)
	})
}

module.exports = getFunctionHandler