[marcelobern]

Changes

• Moved previous (loopback3) example to examples folder. This example continues using RDS.
• Added loopback 4 (via express) to the example folder. For simplicity, this example uses the loopback 4 in memory datasource instead of RDS.

Known issues

• Loopback 3 example deploys to AWS but has stopped working (see error below). Not spending time to fix it as loopback 3 is under LTS maintenance. Keeping the example here mostly as a reference and can work on troubleshooting if the needs arises.

Error
404 There is no method to handle GET /explorer/

Error: There is no method to handle GET /explorer/
    at restUrlNotFound (/var/task/node_modules/strong-remoting/lib/rest-adapter.js:425:17)
    at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/var/task/node_modules/express/lib/router/index.js:317:13)
    at /var/task/node_modules/express/lib/router/index.js:284:7
    at Function.process_params (/var/task/node_modules/express/lib/router/index.js:335:12)
    at next (/var/task/node_modules/express/lib/router/index.js:275:10)
    at jsonParser (/var/task/node_modules/body-parser/lib/types/json.js:119:7)
    at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/var/task/node_modules/express/lib/router/index.js:317:13)
    at /var/task/node_modules/express/lib/router/index.js:284:7
    at Function.process_params (/var/task/node_modules/express/lib/router/index.js:335:12)
    at next (/var/task/node_modules/express/lib/router/index.js:275:10)
    at urlencodedParser (/var/task/node_modules/body-parser/lib/types/urlencoded.js:100:7)
    at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/var/task/node_modules/express/lib/router/index.js:317:13)
    at /var/task/node_modules/express/lib/router/index.js:284:7

• Loopback 4 example deploys to AWS and loads API explorer but CloudFront is rejecting the API calls from API explorer front end but all works from Postman. Based on some quick research, I suspect the issue is related to CloudFront behavior around headers and would need to change the CloudFront instance used (not possible since it is not accessible) or look into the loopback 4 headers. Ignoring this issue as API invocation is working from Postman.