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Added FS backed

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This commit is contained in:
John Crepezzi 2011-11-18 17:12:28 -05:00
parent 93435715f2
commit 7709e12500
2 changed files with 51 additions and 17 deletions
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1
.gitignore vendored
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@ -2,3 +2,4 @@ npm-debug.log
node_modules
*.swp
*.swo
data

67
lib/document_handler.js
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@ -1,4 +1,7 @@
var fs = require('fs'); // TODO won't be needed
var winston = require('winston');
var hashlib = require('hashlib');
// For handling serving stored documents
@ -8,36 +11,66 @@ var DocumentHandler = function(options) {
}
};
// TODO implement with FS backend
DocumentHandler.documents = {};
// Save a document
// TODO make data path configurable
// TODO move to a separate object
DocumentHandler.save = function(key, data, callback) {
fs.mkdir('data', '700', function() {
fs.writeFile('data/' + hashlib.md5(key), data, 'utf8', function() {
callback(true); // TODO handle errors
});
});
};
// Retrieve a document by key
DocumentHandler.get = function(key, callback) {
fs.readFile('data/' + hashlib.md5(key), 'utf8', function(err, data) {
if (err) {
callback(false);
}
else {
callback(data);
}
});
};
// Handle retrieving a document
DocumentHandler.prototype.handleGet = function(key, response) {
if (DocumentHandler.documents[key]) {
winston.verbose('retrieved document', { key: key });
response.writeHead(200, { 'content-type': 'application/json' });
response.end(JSON.stringify({ data: DocumentHandler.documents[key], key: key }));
}
else {
winston.warn('document not found', { key: key });
response.writeHead(404, { 'content-type': 'application/json' });
response.end(JSON.stringify({ message: 'document not found' }));
}
DocumentHandler.get(key, function(ret) {
if (ret) {
winston.verbose('retrieved document', { key: key });
response.writeHead(200, { 'content-type': 'application/json' });
response.end(JSON.stringify({ data: ret, key: key }));
}
else {
winston.warn('document not found', { key: key });
response.writeHead(404, { 'content-type': 'application/json' });
response.end(JSON.stringify({ message: 'document not found' }));
}
});
};
// Handle adding a new Document
DocumentHandler.prototype.handlePost = function(request, response) {
var key = this.randomKey();
var buffer = '';
request.on('data', function(data) {
if (!DocumentHandler.documents[key]) {
if (!buffer) {
response.writeHead(200, { 'content-type': 'application/json' });
DocumentHandler.documents[key] = '';
}
DocumentHandler.documents[key] += data.toString();
buffer += data.toString();
});
request.on('end', function(end) {
winston.verbose('added document', { key: key });
response.end(JSON.stringify({ key: key }));
DocumentHandler.save(key, buffer, function(res) {
if (res) {
winston.verbose('added document', { key: key });
response.end(JSON.stringify({ key: key }));
}
else {
winston.verbose('error adding document');
response.end(JSON.stringify({ message: 'error adding document' }));
}
});
});
request.on('error', function(error) {
winston.error('connection error: ' + error.message);