1 files changed, 87 insertions, 0 deletions
diff --git a/server/modules/apicache/memory-cache.js b/server/modules/apicache/memory-cache.js
new file mode 100644
index 0000000..a91eee3
--- /dev/null
+++ b/server/modules/apicache/memory-cache.js
@@ -0,0 +1,87 @@
+function MemoryCache() {
+    this.cache = {};
+    this.size = 0;
+}
+
+/**
+ * 
+ * @param {string} key Key to store cache as
+ * @param {any} value Value to store
+ * @param {number} time Time to store for
+ * @param {function(any, string)} timeoutCallback Callback to call in
+ * case of timeout
+ * @returns {Object}
+ */
+MemoryCache.prototype.add = function (key, value, time, timeoutCallback) {
+    let old = this.cache[key];
+    let instance = this;
+
+    let entry = {
+        value: value,
+        expire: time + Date.now(),
+        timeout: setTimeout(function () {
+            instance.delete(key);
+            return timeoutCallback && typeof timeoutCallback === "function" && timeoutCallback(value, key);
+        }, time)
+    };
+
+    this.cache[key] = entry;
+    this.size = Object.keys(this.cache).length;
+
+    return entry;
+};
+
+/**
+ * Delete a cache entry
+ * @param {string} key Key to delete
+ * @returns {null}
+ */
+MemoryCache.prototype.delete = function (key) {
+    let entry = this.cache[key];
+
+    if (entry) {
+        clearTimeout(entry.timeout);
+    }
+
+    delete this.cache[key];
+
+    this.size = Object.keys(this.cache).length;
+
+    return null;
+};
+
+/**
+ * Get value of key
+ * @param {string} key 
+ * @returns {Object}
+ */
+MemoryCache.prototype.get = function (key) {
+    let entry = this.cache[key];
+
+    return entry;
+};
+
+/**
+ * Get value of cache entry
+ * @param {string} key 
+ * @returns {any}
+ */
+MemoryCache.prototype.getValue = function (key) {
+    let entry = this.get(key);
+
+    return entry && entry.value;
+};
+
+/**
+ * Clear cache
+ * @returns {boolean}
+ */
+MemoryCache.prototype.clear = function () {
+    Object.keys(this.cache).forEach(function (key) {
+        this.delete(key);
+    }, this);
+
+    return true;
+};
+
+module.exports = MemoryCache;