/
serverless-http.js
62 lines (50 loc) 路 1.61 KB
/
serverless-http.js
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'use strict';
const finish = require('./lib/finish');
const getHandler = require('./lib/get-handler');
const cleanUpEvent = require('./lib/clean-up-event');
const sanitizeHeaders = require('./lib/sanitize-headers');
const getBody = require('./lib/get-body');
const isBinary = require('./lib/is-binary');
const Request = require('./lib/request');
const Response = require('./lib/response');
const defaultOptions = {
requestId: 'x-request-id'
};
module.exports = function(app, opts) {
const handler = getHandler(app);
const options = Object.assign({}, defaultOptions, opts);
return (evt, ctx, callback) => {
ctx.callbackWaitsForEmptyEventLoop = !!options.callbackWaitsForEmptyEventLoop;
Promise.resolve()
.then(() => {
const context = ctx || {};
const event = cleanUpEvent(evt);
const request = new Request(event, options);
return finish(request, event, context, options.request)
.then(() => {
const response = new Response(request);
handler(request, response);
return finish(response, event, context, options.response);
});
})
.then(res => {
process.nextTick(() => {
const statusCode = res.statusCode;
const headers = sanitizeHeaders(res._headers);
const isBase64Encoded = isBinary(headers, options);
const body = getBody(res, isBase64Encoded);
callback(null, {
isBase64Encoded,
statusCode,
headers,
body
});
});
})
.catch(e => {
process.nextTick(() => {
callback(e);
});
});
};
};