sheercms/lib/cache/cache-api.js

Sheer Cliff CMS is a simple and powerful content management system (CMS) for Node JS.

var api = require('../api');
var logger = require('../logger');

/*
callback: (err)
 */
module.exports.set = function(key, value, seconds, callback) {
    if (key) {
        var cache = api.plugins.get("cache");
        if (cache) {
            cache.set(key, value, seconds, callback);
        }
        else {
            if (callback) callback(null);
        }
    }
    else {
        if (callback) callback(null);
    }
};

/*
key: if null, then the cache is not checked.
callback: (err, value)
 */
module.exports.get = function(key, callback) {
    if (callback) {
        if (key) {
            var cache = api.plugins.get("cache");
            if (cache) {
                cache.get(key, callback);
            }
            else
                callback(null, null);
        }
        else {
            callback(null, null);
        }
    }
};

/*
callback: (err)
 */
module.exports.remove = function(key, callback) {
    logger.info("Removing cache key: " + key);
    var cache = api.plugins.get("cache");
    if (cache) {
        cache.remove(key, callback);
    }
    else {
        if (callback) callback(null);
    }
};

/*
 callback: (err)
 */
module.exports.removeAll = function(prefix, callback) {
    logger.info("Removing all cache with prefix: " + prefix);
    var cache = api.plugins.get("cache");
    if (cache) {
        cache.removeAll(prefix, callback);
    }
    else {
        if (callback) callback(null);
    }
};

/*
callback: (err, count)
 */
module.exports.count = function(callback) {
    logger.info("Counting cache items");
    var cache = api.plugins.get("cache");
    if (cache) {
        cache.count(callback);
    }
    else {
        if (callback) callback(null, 0);
    }
};