Add JSDoc to server/modules/apicache/*

Signed-off-by: Matthew Nickson <mnickson@sidingsmedia.com>

server/modules/apicache/memory-cache.js

@@ -3,6 +3,15 @@ function MemoryCache() {
     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;
@@ -22,6 +31,11 @@ MemoryCache.prototype.add = function (key, value, time, timeoutCallback) {
     return entry;
 };
 
+/**
+ * Delete a cache entry
+ * @param {string} key Key to delete
+ * @returns {null}
+ */
 MemoryCache.prototype.delete = function (key) {
     let entry = this.cache[key];
 
@@ -36,18 +50,32 @@ MemoryCache.prototype.delete = function (key) {
     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);