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Noel
2013-12-21 19:39:08 -05:00
commit 99ad597bca
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.gitignore vendored Normal file
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data

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dumbserver.js Normal file
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//
// Dependencies
//
var http = require('http');
var fs = require('fs');
//
// Constants
//
var DATA_LOCATION = 'data'; // both the url root and the location of data file
var DATA_LOCATION_LEN = DATA_LOCATION.length;
var DATA_FILE = __dirname + '/' + DATA_LOCATION;
var PORT = 80;
//
// Load store file
//
var store = {}; // deafult empty object
try {
var json = fs.readFileSync(DATA_FILE);
store = JSON.parse(json);
console.log('Read store file');
} catch (e) { // lazy error handling
console.log('Could not load store file. Using empty array.');
}
//
// Flush to store file on exit
//
var flush = function()
{
console.log('Caught deadly signal.');
console.log('Flushing data to file [' + DATA_FILE + ']\n');
fs.writeFileSync(DATA_FILE, JSON.stringify(store));
};
var handleInterrupt = function() { flush(); process.exit(); };
process.on('SIGINT', handleInterrupt);
process.on('SIGTERM', handleInterrupt);
process.on('SIGHUP', flush); // HUP flushes to file but keeps the server running
//
// If request URI is prefixed with the value of DATA_LOCATION, we treat incoming request as a REST request
// Otherwise we serve the file referenced by the URI
//
var serveFile = function(loc, req, resp)
{
var fullPath = __dirname + '/' + loc;
console.log('Trying to serve file at [' + fullPath + ']');
if (req.method !== 'GET') { // read only!
resp.writeHead(405);
resp.write('Unsupported method\n');
resp.end();
} else if (fs.existsSync(fullPath)) {
resp.writeHead(200);
fs.createReadStream(fullPath).pipe(resp);
} else {
resp.writeHead(404);
resp.write('Not Found\n');
resp.end();
}
};
var serveRestData = function(key, req, resp)
{
console.log(req.method + ' request for key [' + key + ']');
switch (req.method) {
case 'GET':
if (store.hasOwnProperty(key)) {
resp.writeHead(200, { 'Content-Type' : 'application/json' });
resp.write(JSON.stringify(store[key]) + '\n');
} else {
resp.writeHead(404);
resp.write('Not Found\n');
}
resp.end();
break;
case 'PUT':
var json = '';
req.on('data', function(chunk) { json += chunk; });
req.on('end', function() {
try {
var data = JSON.parse(json);
store[key] = data;
resp.writeHead(204);
} catch (e) {
resp.writeHead(400);
resp.write('Invalid JSON\n');
}
resp.end();
});
break;
case 'DELETE':
if (store.hasOwnProperty(key)) {
delete store[key];
resp.writeHead(204);
} else {
resp.writeHead(404);
}
resp.end();
break;
default:
resp.writeHead(405);
resp.write('Unsupported method\n');
resp.end();
}
};
//
// Listen for connections
//
http.createServer(function(req, resp) {
console.log('Serving [' + req.url + ']');
var uri = req.url.replace(/^\/+|\/+$/g, ''); // trim slashes
if (uri.substr(0, DATA_LOCATION_LEN + 1) === DATA_LOCATION + '/') { // rest request
serveRestData(uri.substr(DATA_LOCATION_LEN + 1), req, resp);
} else { // try to serve the file
if (uri === '') { uri = 'index.html'; }
serveFile(uri, req, resp);
}
}).listen(PORT);

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index.html Normal file
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<!doctype html>
<html>
<head>
</head>
<body>
<p>Hello World!</p>
</body>
</html>