# This plugin differs from xtradb_cluster because it's active:
# it's checked outside machines

import random
import urllib2

# This check is based on https://github.com/olafz/percona-clustercheck
#
# All clusters installed here have an tiny script listening on port 9200
# that returns 200 OK if the cluster is OK and 503 otherwise.
#
# To make sure that the cluster is up, we need to receive at least a 200

def __run__(params):
    nodes = params.get('nodes').split()
    random.shuffle(nodes)

    url_template = 'http://{0}:9200/'
    for node in nodes:
        try:
            url = urllib2.urlopen(url_template.format(node))
            if url.getcode() == 200:
                return [0, 'OK']
        except:
            continue

    return [2, "CRITICAL: cluster is offline"]