heap-usage.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import json
import urllib2
import time

url = "http://localhost:8080/metrics/v1/mbeans/java.lang:type=Memory"
outputfile = "/var/log/puppetlabs/puppetdb/heap-usage.log"

if __name__ == '__main__':
    try:
        heap_data = json.load(urllib2.urlopen(url))['HeapMemoryUsage']
        out = open(outputfile, 'a')
        line = ",".join([str(time.time()),
                         str(heap_data['committed']),
                         str(heap_data['used'])]) + '\n'
        out.write(line)
        out.close()
    except:
        None