dns_forwarding_statistics.py
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dns_forwarding_statistics.py
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	#!/usr/bin/env python3

	import subprocess
	import jinja2

	PDNS_CMD='/usr/bin/rec_control'

	OUT_TMPL_SRC = """
	DNS forwarding statistics:

	Cache entries: {{ cache_entries -}}
	Cache size: {{ cache_size }} kbytes

	"""


	if __name__ == '__main__':
	data = {}

	data['cache_entries'] = subprocess.check_output([PDNS_CMD, 'get cache-entries']).decode()
	data['cache_size'] = "{0:.2f}".format( int(subprocess.check_output([PDNS_CMD, 'get cache-bytes']).decode()) / 1024 )

	tmpl = jinja2.Template(OUT_TMPL_SRC)
	print(tmpl.render(data))