cache store

storage-service/lib/storage-cachestore.js

+var redis = require('redis');
+const PREFIX = 'bs:cache:storage';
+
+module.exports.create = function(conf)
+{
+  return new CacheStore(conf);
+}
+
+function CacheStore(conf){
+  this.prefix = PREFIX ;
+
+  if(conf.mem){
+      this.mem = conf.mem;
+  }else if(conf.conn){
+    this.mem = redis.createClient(conf.conn);
+  }
+}
+
+CacheStore.prototype.setIndex = function(storage,oid,object,cb){
+  var key = this.prefix + ":" + storage;
+  this.mem.hset(key,oid,object,cb);
+}
+
+CacheStore.prototype.getIndex = function(storage,oid,cb)
+{
+  var key = this.prefix + ":" + storage;
+  this.mem.hget(key,oid,function(err,v){
+    var value = null;
+    if(!err && v){
+      value = v;
+    }
+    cb(err,value);
+  });
+}
+
+CacheStore.prototype.flush = function(storage,cb)
+{
+  var key = this.prefix + ":" + storage;
+  this.mem.del(key);
+  if(typeof cb == 'function'){
+    cb();
+  }
+}
+