sheercms/lib/cache/cache-index.js

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

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

/*
 callback: (err)
 */
module.exports.init = function(server, callback) {

    //routes
    server.post('/cms/cache/clear', auth.authenticate, routeCacheClear);
    server.get('/cms/cache/stats', auth.authenticate, routeCacheStats);

    if (callback)
        callback(null);
};

/*
 POST ~/cms/cache/clear
 */
function routeCacheClear(req, res, next) {
    try {
        var key = req.body.key;
        var type = req.body.type;

        if (type) {
            var prefix;
            if (type === 'item')
                prefix = 'item:';
            else if (type === 'output')
                prefix = 'output:';
            else
                prefix = null;

            api.cache.removeAll(prefix, function(err) {
                if (err) {
                    res.json({ success: false, message: err.message });
                }
                else {
                    api.cache.count(function(err, count) {
                        if (err) {
                            res.json({ success: false, message: err.message });
                        }
                        else {
                            res.json({ success: true, message: "Cache cleared successfully!", count: count });
                        }
                    });
                }
            });
        }
        else if (key) {
            api.cache.remove(key, function(err) {
                if (err) {
                    res.json({ success: false, message: err.message });
                }
                else {
                    api.cache.count(function(err, count) {
                        if (err) {
                            res.json({ success: false, message: err.message });
                        }
                        else {
                            res.json({ success: true, message: "Cache key cleared successfully: " + key, count: count });
                        }
                    });
                }
            });
        }
        else {
            res.json({ success: false, message: "Invalid parameters." });
        }

    } catch(e) {
        logger.error(e);
        res.json({ success: false, message: "Error clearing the cache." });
    }
}

/*
 GET ~/cms/cache/stats
 */
function routeCacheStats(req, res, next) {
    try {

        var stats = {
            count: 0,
            success: true
        };

        api.cache.count(function(err, count) {
            if (err) {
                res.json({ success: false, message: err.message });
            }
            else {
                stats.count = count;
                stats.success = true;

                res.json(stats);
            }
        });

    }
    catch(e) {
        logger.error(e);
        res.json({ success: false, message: "Error retrieving cache stats." });
    }
 }