function jsonAPI(anExport, aFunction)
{
var runkitExpress = require("@runkit/runkit/express-endpoint/1.0.0")
var bodyParser = require('body-parser');
var app = runkitExpress(anExport)
app.set('json spaces', 2);
app.use(require('compression')())
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
// add CORS headers, so the API is available anywhere
app.use(function(req, res, next)
{
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Expose-Headers", "runkit-rate-limit-remaining");
res.header("Access-Control-Expose-Headers", "tonic-rate-limit-remaining");
var reqHeaders = req.get("Access-Control-Request-Headers")
if (reqHeaders) res.header("Access-Control-Allow-Headers", reqHeaders);
var reqMethods = req.get("Access-Control-Request-Methods")
if (reqMethods) res.header("Access-Control-Allow-Methods", reqMethods);
next()
})
app.all('/', async function(request, response, next)
{
try
{
var requestData = {
method: request.method,
body: request.body,
query: request.query
}
var responseData = await (aFunction.length === 2 ?
(new Promise(function(resolve) {
aFunction(requestData, resolve)
})) : aFunction(requestData))
if (responseData)
response.json(responseData)
else
response.status(201).end()
}
catch(anException)
{
response.status(500)
response.json({
message: "unable to process request",
error: anException.toString()
})
}
})
return app;
}
module.exports = jsonAPI;
This helper creates a simple JSON API that accepts JSON request data and returns a JSON response. It can be used two different ways, depending on the callback's signature. The incoming data is an object with three properties:
- "method": the request method used
- "body": the data sent in the body of the request
- "query": any query parameters sent in the request
If the "arity" (the number of arguments) of the provided callback function is 1, then you can return a response directly, or a promise that eventually resolves to the data. Here's an example use: https://runkit.com/runkit/json-endpoint-example-1
If the "arity" is 2, then the second parameter is a "done" callback that you should call yourself whenever you want to return a response. You can pass the response as the only argument to the callback. Here's an example use: https://runkit.com/runkit/json-endpoint-example-2
44 comments
- posted 8 years ago bywhat are the arguments "anExport" and "aFunction" and where are the passed in?
- posted 8 years ago byI think those are just placeholder for "aFunction" that you would write yourself. anException is, likewise, an error that you are watching for.
- posted 6 years ago byhttps://runkit.com/assets/images/spaceman.jpg
- posted 5 years ago byIt looks like this package only works up to node v6.17.1. Is that correct? Is there another library we should be using?
- posted 5 years ago byECMAScript 6 (also known as ES2015) Support:
- posted 5 years ago byRunkit Save Account JSON API with Endpoint node v4.9.1version: 1.0.0endpointsharetweet 1 function jsonAPI(anExport, aFunction) 2 { 3 var runkitExpress = require("@runkit/runkit/express-endpoint/1.0.0") 4 var bodyParser = require('body-parser'); 5 var app = runkitExpress(anExport) 6 7 app.set('json spaces', 2); 8 app.use(require('compression')()) 9 app.use(bodyParser.json()); 10 app.use(bodyParser.urlencoded({ extended: false })); 11 12 // add CORS headers, so the API is available anywhere 13 app.use(function(req, res, next) 14 { 15 res.header("Access-Control-Allow-Origin", "*"); 16 res.header("Access-Control-Expose-Headers", "runkit-rate-limit-remaining"); 17 res.header("Access-Control-Expose-Headers", "tonic-rate-limit-remaining"); 18 19 var reqHeaders = req.get("Access-Control-Request-Headers") 20 if (reqHeaders) res.header("Access-Control-Allow-Headers", reqHeaders); 21 22 var reqMethods = req.get("Access-Control-Request-Methods") 23 if (reqMethods) res.header("Access-Control-Allow-Methods", reqMethods); 24 25 next() 26 }) 27 28 app.all('/', async function(request, response, next) 29 { 30 try 31 { 32 var requestData = { 33 method: request.method, 34 body: request.body, 35 query: request.query 36 } 37 38 var responseData = await (aFunction.length === 2 ? 39 (new Promise(function(resolve) { 40 aFunction(requestData, resolve) 41 })) : aFunction(requestData)) 42 43 if (responseData) 44 response.json(responseData) 45 else 46 response.status(201).end() 47 } 48 catch(anException) 49 { 50 response.status(500) 51 response.json({ 52 message: "unable to process request", 53 error: anException.toString() 54 }) 55 } 56 }) 57 58 return app; 59 } 60 61 module.exports = jsonAPI; function jsonAPI() This helper creates a simple JSON API that accepts JSON request data and returns a JSON response. It can be used two different ways, depending on the callback's signature. The incoming data is an object with three properties: - "method": the request method used - "body": the data sent in the body of the request - "query": any query parameters sent in the request If the "arity" (the number of arguments) of the provided callback function is 1, then you can return a response directly, or a promise that eventually resolves to the data. Here's an example use: https://runkit.com/runkit/json-endpoint-example-1 If the "arity" is 2, then the second parameter is a "done" callback that you should call yourself whenever you want to return a response. You can pass the response as the only argument to the callback. Here's an example use: https://runkit.com/runkit/json-endpoint-example-2 5 comments posted 3 years ago by methradeth what are the arguments "anExport" and "aFunction" and where are the passed in? posted 3 years ago by alphanumeric010101 I think those are just placeholder for "aFunction" that you would write yourself. anException is, likewise, an error that you are watching for. posted a year ago by alfian547 https://runkit.com/assets/images/spaceman.jpg posted 9 months ago by iloveitaly It looks like this package only works up to node v6.17.1. Is that correct? Is there another library we should be using? posted a few seconds ago by 5e9cc003debef1001a5391de delete ECMAScript 6 (also known as ES2015) Support: Add a comment
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