Added postgres adapter

lib/document_handler.js

@@ -56,7 +56,6 @@ DocumentHandler.prototype.handlePost = function (request, response) {
   // What to do when done
   var onSuccess = function () {
     // Check length
-    console.log(buffer);
     if (_this.maxLength && buffer.length > _this.maxLength) {
       cancelled = true;
       winston.warn('document >maxLength', { maxLength: _this.maxLength });

lib/document_stores/postgres.js

@@ -3,28 +3,27 @@
 var postgres = require('pg');
 var winston = require('winston');
 
-(function () {
+// create table entries (id SERIAL primary key, key varchar(255) not null, value text not null, expiration int);
+// CREATE UNIQUE INDEX unique_key ON entries (key);
 
-  'use strict';
+// A postgres document store
+var PostgresDocumentStore = function (options) {
+  this.expireJS = options.expire;
+  this.connectionUrl = process.env.DATABASE_URL || options.connectionUrl;
+};
 
-  // A postgres document store
+PostgresDocumentStore.prototype = {
-  var PostgresDocumentStore = function (options) {
-    this.expireJS = options.expire * 1000;
-    this.connectionString = process.env.DATABASE_URL;
-  };
-
-  PostgresDocumentStore.prototype = {
 
   // Set a given key
   set: function (key, data, callback, skipExpire) {
-      var now = new Date().getTime() / 1000;
+    var now = Math.floor(new Date().getTime() / 1000);
     var that = this;
     this.safeConnect(function (err, client, done) {
       if (err) { return callback(false); }
       client.query('INSERT INTO entries (key, value, expiration) VALUES ($1, $2, $3)', [
         key,
         data,
-          that.expireJS && !skipExpire ? now + that.expireJS : null
+        that.expireJS && !skipExpire ? that.expireJS + now : null
       ], function (err, result) {
         if (err) {
           winston.error('error persisting value to postgres', { error: err });
@@ -38,26 +37,35 @@ var winston = require('winston');
 
   // Get a given key's data
   get: function (key, callback, skipExpire) {
-      var now = new Date().getTime() / 1000;
+    var now = Math.floor(new Date().getTime() / 1000);
     var that = this;
     this.safeConnect(function (err, client, done) {
       if (err) { return callback(false); }
-        client.query('SELECT value from entries where KEY = $1 AND (expiration IS NULL or expiration < $2)', [
+      client.query('SELECT id,value,expiration from entries where KEY = $1 and (expiration IS NULL or expiration > $2)', [key, now], function (err, result) {
-          key,
-          that.expireJS ? now - that.expireJS : 0
-        ], function (err, result) {
         if (err) {
           winston.error('error retrieving value from postgres', { error: err });
           return callback(false);
         }
         callback(result.rows.length ? result.rows[0].value : false);
+        if (result.rows.length && that.expireJS && !skipExpire) {
+          client.query('UPDATE entries SET expiration = $1 WHERE ID = $2', [
+            that.expireJS + now,
+            result.rows[0].id
+          ], function (err, result) {
+            if (!err) {
+              done();
+            }
+          });
+        } else {
+          done();
+        }
       });
     });
   },
 
   // A connection wrapper
   safeConnect: function (callback) {
-      postgres.connect(this.connectionString, function (err, client, done) {
+    postgres.connect(this.connectionUrl, function (err, client, done) {
       if (err) {
         winston.error('error connecting to postgres', { error: err });
         callback(err);
@@ -67,8 +75,6 @@ var winston = require('winston');
     });
   }
 
-  };
+};
 
-  module.export = PostgresDocumentStore;
+module.exports = PostgresDocumentStore;
-
-}());

server.js

@@ -37,7 +37,7 @@ if (!config.storage.type) {
 
 var Store, preferredStore;
 
-if (process.env.REDISTOGO_URL) {
+if (process.env.REDISTOGO_URL && config.storage.type === 'redis') {
   var redisClient = require('redis-url').connect(process.env.REDISTOGO_URL);
   Store = require('./lib/document_stores/redis');
   preferredStore = new Store(config.storage, redisClient);