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ModeStore.js

module.exports = MemoryStore;

function MemoryStore(options) {
  this.options = options || {};
  this.app = this.options.app;
  this.cache = {};
}

MemoryStore.prototype.cacheVersion = '';

MemoryStore.prototype.get = function(key) {
  var data;

  if (!key) {
    return;
  }
  data = this._get(key);
  if (data && data.expires && Date.now() > data.expires) {
    if (typeof console !== "undefined") {
      console.log("MemoryStore: Expiring key \"" + key + "\".");
    }
    this.clear(key);
    data = undefined;
  } else if (data && data.value) {
    data = data.value;
  }
  return data;
};

MemoryStore.prototype.set = function(key, value, ttlSec) {
  var expires;

  if (!key || value === undefined) {
    return false;
  }
  expires = ttlSec ? Date.now() + ttlSec * 1000 : null;
  this._set(key, {
    value: value,
    expires: expires
  });
  return true;
};

MemoryStore.prototype._get = function(key) {
  return this.cache[this._formatKey(key)];
};

MemoryStore.prototype._set = function(key, data) {
  this.cache[this._formatKey(key)] = data;
};

MemoryStore.prototype._clear = function(key) {
  delete this.cache[this._formatKey(key)];
};

MemoryStore.prototype._clearAll = function() {
  this.cache = {};
};

MemoryStore.prototype.clear = function(key) {
  if (key != null) {
    return this._clear(key);
  } else {
    return this._clearAll();
  }
};

MemoryStore.prototype._versionKey = function(key) {
  return key + ":" + this.cacheVersion;
};

MemoryStore.prototype._formatKey = function(key) {
  return this._versionKey(key);
};