add storage option for Pivotal Cloud Foundry Redis tile ('p-redis') service

config.js

@@ -33,9 +33,7 @@
   },
 
   "storage": {
-    "type": "memcached",
+    "type": "p-redis",
-    "host": "127.0.0.1",
-    "port": 11211,
     "expire": 2592000
   },
 

lib/document_stores/p-redis.js

@@ -0,0 +1,83 @@
+var redis = require('redis');
+var winston = require('winston');
+
+// For storing in Pivotal Cloud Foundry p-redis
+// options[type] = p-redis
+// options[expire] - The time to live for each key set (default never)
+
+var RedisDocumentStore = function(options, client) {
+  this.expire = options.expire;
+  if (client) {
+    winston.info('using predefined redis client');
+    RedisDocumentStore.client = client;
+  } else if (!RedisDocumentStore.client) {
+    winston.info('configuring redis');
+    RedisDocumentStore.connect(options);
+  }
+};
+
+// Create a connection according to VCAP_SERVICES
+RedisDocumentStore.connect = function() {
+  var vcapServices = JSON.parse(process.env.VCAP_SERVICES);
+  var p_redis = vcapServices['p-redis'][0];
+  var index = 0;
+  RedisDocumentStore.client = redis.createClient(p_redis.credentials.port, p_redis.credentials.host);
+  RedisDocumentStore.client.auth(p_redis.credentials.password);
+
+  RedisDocumentStore.client.on('error', function(err) {
+    winston.error('redis disconnected', err);
+  });
+
+  RedisDocumentStore.client.select(index, function(err) {
+    if (err) {
+      winston.error(
+        'error connecting to redis index ' + index,
+        { error: err }
+      );
+      process.exit(1);
+    }
+    else {
+      winston.info('connected to redis on ' + p_redis.credentials.host + ':' + p_redis.credentials.port + '/' + index);
+    }
+  });
+};
+
+// Save file in a key
+RedisDocumentStore.prototype.set = function(key, data, callback, skipExpire) {
+  var _this = this;
+  RedisDocumentStore.client.set(key, data, function(err) {
+    if (err) {
+      callback(false);
+    }
+    else {
+      if (!skipExpire) {
+        _this.setExpiration(key);
+      }
+      callback(true);
+    }
+  });
+};
+
+// Expire a key in expire time if set
+RedisDocumentStore.prototype.setExpiration = function(key) {
+  if (this.expire) {
+    RedisDocumentStore.client.expire(key, this.expire, function(err) {
+      if (err) {
+        winston.error('failed to set expiry on key: ' + key);
+      }
+    });
+  }
+};
+
+// Get a file from a key
+RedisDocumentStore.prototype.get = function(key, callback, skipExpire) {
+  var _this = this;
+  RedisDocumentStore.client.get(key, function(err, reply) {
+    if (!err && !skipExpire) {
+      _this.setExpiration(key);
+    }
+    callback(err ? false : reply);
+  });
+};
+
+module.exports = RedisDocumentStore;

manifest.yml

@@ -0,0 +1,15 @@
+# cf push -f manifest-dev.yml
+
+---
+applications:
+- name: hastebin
+  buildpacks:
+  - https://github.com/cloudfoundry/nodejs-buildpack.git#v1.6.3
+  disk_quota: 128M
+  env:
+    OPTIMIZE_MEMORY: "true"
+  instances: 1
+  memory: 128M
+  services:
+  - hastebin-redis
+  stack: cflinuxfs2

package.json

@@ -30,8 +30,7 @@
   },
   "bundledDependencies": [],
   "engines": {
-    "node": "8.1.4",
+    "node": "8.1.4"
-    "npm": "5.2.0"
   },
   "bin": {
     "haste-server": "./server.js"