Commit 0f2075fc authored by John Crepezzi's avatar John Crepezzi
Browse files

Ensure conflict resolution in keyspace

parent 4ed87c4e

TODO

+2 −2
Original line number Diff line number Diff line 
cache headers for static assets

cache headers for static assets (and on document GET)

tests

fix any annoying visual quirks

add FAVICON
@@ -6,7 +6,7 @@ cache static in memory 
add feedback for errors to UI - esp. too long

copy URL to clipboard button

add about page

add conflict resolution for keys when creating a post

support built-in expiration



# shared version only

some way to do announcements easily (and use for ads)

lib/document_handler.js

+26 −12
Original line number Diff line number Diff line
@@ -29,7 +29,6 @@ DocumentHandler.prototype.handleGet = function(key, response) { 
// Handle adding a new Document

DocumentHandler.prototype.handlePost = function(request, response) {

  var _this = this;

  var key = this.randomKey();

  var buffer = '';

  request.on('data', function(data) {

    if (!buffer) {
@@ -38,13 +37,14 @@ DocumentHandler.prototype.handlePost = function(request, response) { 
    buffer += data.toString();

    if (_this.maxLength && buffer.length > _this.maxLength) {

      _this.cancelled = true;

      winston.warn('attempted to upload a document >maxLength', { maxLength: _this.maxLength });

      winston.warn('document >maxLength', { maxLength: _this.maxLength });

      response.writeHead(400, { 'content-type': 'application/json' });

      response.end(JSON.stringify({ message: 'document exceeds maximum length' }));

    }

  });

  request.on('end', function(end) {

    if (_this.cancelled) return;

    _this.chooseKey(function(key) {

      _this.store.set(key, buffer, function(res) {

        if (res) {

          winston.verbose('added document', { key: key });
@@ -57,6 +57,7 @@ DocumentHandler.prototype.handlePost = function(request, response) { 
        }

      });

    });

  });

  request.on('error', function(error) {

    winston.error('connection error: ' + error.message);

    response.writeHead(500, { 'content-type': 'application/json' });
@@ -64,6 +65,19 @@ DocumentHandler.prototype.handlePost = function(request, response) { 
  });

};



// Get a random key that hasn't been already used

DocumentHandler.prototype.chooseKey = function(callback) {

  var key = this.randomKey();

  var _this = this;

  this.store.get(key, function(ret) {

    if (ret) {

      _this.chooseKey(callback);

    } else {

      callback(key);

    }

  }); 

};



// Generate a random key

DocumentHandler.prototype.randomKey = function() {

  var text = '';