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Move storage mechanism to new object
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parent
b173cdd144
commit
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3 changed files with 49 additions and 31 deletions
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@ -1,42 +1,17 @@
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var fs = require('fs'); // TODO won't be needed
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var winston = require('winston');
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var winston = require('winston');
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var hashlib = require('hashlib');
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// For handling serving stored documents
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// For handling serving stored documents
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var DocumentHandler = function(options) {
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var DocumentHandler = function(options) {
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if (options) {
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if (options) {
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this.keyLength = options.keyLength || 20;
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this.keyLength = options.keyLength || 10;
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this.store = options.store;
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}
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}
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};
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};
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// Save a document
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// TODO make data path configurable
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// TODO move to a separate object
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DocumentHandler.save = function(key, data, callback) {
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fs.mkdir('data', '700', function() {
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fs.writeFile('data/' + hashlib.md5(key), data, 'utf8', function() {
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callback(true); // TODO handle errors
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});
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});
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};
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// Retrieve a document by key
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DocumentHandler.get = function(key, callback) {
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fs.readFile('data/' + hashlib.md5(key), 'utf8', function(err, data) {
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if (err) {
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callback(false);
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}
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else {
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callback(data);
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}
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});
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};
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// Handle retrieving a document
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// Handle retrieving a document
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DocumentHandler.prototype.handleGet = function(key, response) {
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DocumentHandler.prototype.handleGet = function(key, response) {
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DocumentHandler.get(key, function(ret) {
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this.store.get(key, function(ret) {
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if (ret) {
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if (ret) {
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winston.verbose('retrieved document', { key: key });
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winston.verbose('retrieved document', { key: key });
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response.writeHead(200, { 'content-type': 'application/json' });
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response.writeHead(200, { 'content-type': 'application/json' });
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@ -52,6 +27,7 @@ DocumentHandler.prototype.handleGet = function(key, response) {
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// Handle adding a new Document
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// Handle adding a new Document
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DocumentHandler.prototype.handlePost = function(request, response) {
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DocumentHandler.prototype.handlePost = function(request, response) {
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var _this = this;
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var key = this.randomKey();
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var key = this.randomKey();
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var buffer = '';
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var buffer = '';
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request.on('data', function(data) {
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request.on('data', function(data) {
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@ -61,7 +37,7 @@ DocumentHandler.prototype.handlePost = function(request, response) {
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buffer += data.toString();
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buffer += data.toString();
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});
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});
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request.on('end', function(end) {
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request.on('end', function(end) {
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DocumentHandler.save(key, buffer, function(res) {
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_this.store.set(key, buffer, function(res) {
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if (res) {
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if (res) {
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winston.verbose('added document', { key: key });
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winston.verbose('added document', { key: key });
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response.end(JSON.stringify({ key: key }));
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response.end(JSON.stringify({ key: key }));
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36
lib/file_document_store.js
Normal file
36
lib/file_document_store.js
Normal file
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@ -0,0 +1,36 @@
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var fs = require('fs');
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var winston = require('winston');
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var hashlib = require('hashlib');
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// For storing in files
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// TODO make data path configurable
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// TODO make store type configurable
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var FileDocumentStore = function(path) {
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this.basePath = path;
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};
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// Save data in a file, key as md5 - since we don't know what we could be passed here
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FileDocumentStore.prototype.set = function(key, data, callback) {
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var _this = this;
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fs.mkdir(this.basePath, '700', function() {
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fs.writeFile(_this.basePath + '/' + hashlib.md5(key), data, 'utf8', function() {
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callback(true); // TODO handle errors
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});
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});
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};
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// Get data from a file from key
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FileDocumentStore.prototype.get = function(key, callback) {
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fs.readFile(this.basePath + '/' + hashlib.md5(key), 'utf8', function(err, data) {
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if (err) {
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callback(false);
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}
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else {
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callback(data);
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}
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});
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};
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module.exports = FileDocumentStore;
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10
server.js
10
server.js
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@ -6,6 +6,7 @@ var winston = require('winston');
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var StaticHandler = require('./lib/static_handler');
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var StaticHandler = require('./lib/static_handler');
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var DocumentHandler = require('./lib/document_handler');
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var DocumentHandler = require('./lib/document_handler');
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var FileDocumentStore = require('./lib/file_document_store');
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// Load the configuration and set some defaults
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// Load the configuration and set some defaults
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var config = JSON.parse(fs.readFileSync('config.js', 'utf8'));
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var config = JSON.parse(fs.readFileSync('config.js', 'utf8'));
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@ -36,14 +37,19 @@ http.createServer(function(request, response) {
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// Looking to add a new doc
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// Looking to add a new doc
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if (incoming.pathname.match(/^\/documents$/) && request.method == 'POST') {
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if (incoming.pathname.match(/^\/documents$/) && request.method == 'POST') {
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handler = new DocumentHandler({ keyLength: config.keyLength });
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handler = new DocumentHandler({
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keyLength: config.keyLength,
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store: new FileDocumentStore('./data')
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});
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return handler.handlePost(request, response);
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return handler.handlePost(request, response);
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}
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}
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// Looking up a doc
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// Looking up a doc
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var match = incoming.pathname.match(/^\/documents\/([A-Za-z0-9]+)$/);
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var match = incoming.pathname.match(/^\/documents\/([A-Za-z0-9]+)$/);
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if (request.method == 'GET' && match) {
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if (request.method == 'GET' && match) {
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handler = new DocumentHandler();
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handler = new DocumentHandler({
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store: new FileDocumentStore('./data')
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});
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return handler.handleGet(match[1], response);
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return handler.handleGet(match[1], response);
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}
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}
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