Generates volume discrepancies between Heketi and Gluster

gluster-cmp.py

#!/usr/bin/env python

# Usage: gluster-cmp.py <heketi-txt> <gluster-txt>
#
# Given two text files, the output of: -
#
# - heketi-cli volume list
# - gluster volume status all
#
# ...this utility lists volumes that gluster knows about that
# heketi does not and volumes heketi knows about that gluster does not.
#
# Alan Christie
# May 2019

import os
import re
import sys

heketi_vol_re = re.compile(r'.*Name:(\S+)')
gluster_vol_re = re.compile(r'^Status of volume: (\S+)')

if len(sys.argv) != 3:
    print('Usage: gluster-cmp.py <heketi-txt-file> <gluster-txt-file>')
    sys.exit(1)

# Collect Heketi Volumes
heketi_volumes = []
with open(os.path.expanduser(sys.argv[1])) as input_file:
    for line in input_file:
        match_obj = heketi_vol_re.match(line)
        if match_obj:
            heketi_volumes.append(match_obj.group(1))

# Collect Gluster volumes
gluster_volumes = []
with open(os.path.expanduser(sys.argv[2])) as input_file:
    for line in input_file:
        match_obj = gluster_vol_re.match(line)
        if match_obj:
            gluster_volumes.append(match_obj.group(1))

# Print discrepancies...

print('Volumes known to Gluster but unknown to Heketi')
print('----------------------------------------------')
num_unkown = 0
for volume in gluster_volumes:
    if volume not in heketi_volumes:
        print(volume)
        num_unkown += 1
print('({}/{})'.format(num_unkown, len(gluster_volumes)))

print('')
print('Volumes known to Heketi but unknown to Gluster')
print('----------------------------------------------')
num_unkown = 0
for volume in heketi_volumes:
    if volume not in gluster_volumes:
        print(volume)
        num_unkown += 1
print('({}/{})'.format(num_unkown, len(heketi_volumes)))