MaxCDN purge script.

purge.js

#!/usr/bin/env node
/***
 * Setup:
 *
 * npm install maxcdn subarg async
 *
 ***/
var MaxCDN, subarg, async;
try {
    MaxCDN = require('maxcdn');
    subarg = require('subarg');
    async  = require('async');
} catch (e) {
    console.error("Setup:");
    console.error(" ");
    console.error("$ npm install maxcdn subarg async ");
    console.error(" ");
    console.trace(e);
    process.exit(1);
}
var opts   = subarg(process.argv.slice(2));

if (opts.help || opts.h) usage();

[ 'alias', 'key', 'secret' ].forEach(function(opt) {
    // support ALIAS, KEY, SECRET from environment
    opts[opt] = opts[opt] || process.env[opt.toUpperCase()];

    // ensure required params exist
    if (typeof opts[opt] === 'undefined') {
        usage(1, "Missing required argument: "+opt); // usage with error status
    }
});

// init MaxCDN
var maxcdn = new MaxCDN(opts.alias, opts.key, opts.secret);

opts.pull = opts.pull || [];
opts.push = opts.push || [];
if (opts.push == 0 && opts.pull == 0) {
    async.parallel([
        getZones('pull'),
        getZones('push')
    ], function (err) {
        if (err) console.trace(err);
        purges = [];
        opts.pull.forEach(function (zone) { purges.push(purge('pull', zone)); });
        opts.push.forEach(function (zone) { purges.push(purge('push', zone)); });

        async.parallelLimit(purges, 4, function (err) {
            if (err) console.trace(err);
            console.log('done.');
        });

    });
}

function purge(type, zone) {
    return function (callback) {
        process.stdout.write('purging '+type+' zone '+zone+'... ');
        maxcdn.delete('/zones/'+type+'.json/'+zone+'/cache', function (err, res) {
            console.log('complete');
            callback(err);
        });
    };
}

function getZones(type) {
    return function (callback) {
        maxcdn.get('zones/'+type+'.json', function (err, res) {
            res.data[type+'zones'].forEach(function (zone) {
                opts[type].push(zone.id);
            });
            callback(err);
        });
    };
}

function usage(status, error) {
    status = status || 0; // default to zero exit status

    if (error) {
        console.error("ERROR:", error);
        console.error(" ");
    }

    console.log("Usage: purge.js --alias ALIAS --key KEY --secret SECRET [OPTIONS]");
    console.log(" ");
    console.log(" Required:");
    console.log(" - alias:  Your consumer alias.");
    console.log(" - key:    Your oauth consumer key.");
    console.log(" - secret: Your oauth consumer secret token.");
    console.log(" ");
    console.log(" Note:");
    console.log("   alias, key and secret can also be read from your environment");
    console.log("   via exporting ALIAS, KEY, and/or SECRET with your credentials.");
    console.log(" ");
    console.log(" Optional:");
    console.log(" - pull:   One or more pull zones to purge.");
    console.log(" - push:   One or more push zones to purge.");
    console.log(" - file:   One or more files to purge.");
    console.log(" ");
    console.log(" Examples:");
    console.log(" ");
    console.log(" $ ./pruge.js --alias ALIAS --key KEY --SECRET --zone 12345 --zone 54321");
    console.log(" ");
    console.log(" $ ./pruge.js --alias ALIAS --key KEY --SECRET --zone [ 12345 54321 ]");
    console.log(" ");
    console.log(" $ ./pruge.js --alias ALIAS --key KEY --SECRET --zone 12345 \ ");
    console.log(" $         --file /master.css --file /master.js ]");
    console.log(" ");
    process.exit(status);
}

Usage: purge.js --alias ALIAS --key KEY --secret SECRET [OPTIONS]

 Required:
 - alias:  Your consumer alias.
 - key:    Your oauth consumer key.
 - secret: Your oauth consumer secret token.

 Note:
   alias, key and secret can also be read from your environment
   via exporting ALIAS, KEY, and/or SECRET with your credentials.

 Optional:
 - pull:   One or more pull zones to purge.
 - push:   One or more push zones to purge.
 - file:   One or more files to purge.

 Examples:

 $ ./pruge.js --alias ALIAS --key KEY --SECRET --zone 12345 --zone 54321

 $ ./pruge.js --alias ALIAS --key KEY --SECRET --zone [ 12345 54321 ]

 $ ./pruge.js --alias ALIAS --key KEY --SECRET --zone 12345  
 $         --file /master.css --file /master.js