Created
February 26, 2018 22:21
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Stopgap for the 200 resource limit in AWS by compressing the endpoint count
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| export function buildResponse(statusCode, body, cors = true) { | |
| const result = { | |
| statusCode: statusCode || HTTP_STATUS.OK, | |
| }; | |
| if (cors) { | |
| result['headers'] = { | |
| 'Access-Control-Allow-Origin': '*', | |
| Accept: 'application/json', | |
| }; | |
| } | |
| if (body) { | |
| result.body = JSON.stringify(body); | |
| result.headers['Content-Type'] = 'application/json'; | |
| } | |
| return result; | |
| } | |
| export function httpRouter(handlerMap) { | |
| const notFound = async function(event, context, callback) { | |
| callback(undefined, buildResponse(404)); | |
| }; | |
| return async function(event, context, callback) { | |
| debug('httpRouter handle event:', readable(event)); | |
| const handler = get(handlerMap, event.httpMethod, notFound); | |
| if (handler === notFound) { | |
| debug( | |
| `Failed to find handler for event: ${readable( | |
| event, | |
| )}\nAnd context: ${readable(context)}`, | |
| ); | |
| } | |
| return handler(event, context, callback); | |
| }; | |
| } | |
| export function groupedEventHandler(handlers) { | |
| return async function(event, context, callback) { | |
| const errors = []; | |
| for (let handlerName of Object.keys(handlers)) { | |
| debug(`START EVENT HANDLER: ${handlerName}`); | |
| const handler = handlers[handlerName]; | |
| try { | |
| await handler(event, context); | |
| } catch (err) { | |
| debug(`ERROR IN EVENT HANDLER: ${handlerName}`); | |
| debug(err); | |
| debug(err.stack); | |
| errors.push(err); | |
| } | |
| debug(` END EVENT HANDLER: ${handlerName}`); | |
| } | |
| if (errors.length > 0) { | |
| callback(errors); | |
| } | |
| callback(); | |
| }; | |
| } |
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