do_graphviz_from_container_info.py

#!/usr/bin/env python

from graphviz import Graph
import sys
import time
import re
from collections import OrderedDict
from hashlib import md5

graph = Graph("config_info")

GROK_START = "Name: "
GROK_END = "Meta Timestamp: "
record_started = False
records = []
record = []
try:
    for line in sys.stdin:
        line = line.strip()
        if line.startswith(GROK_START):
            record_started = True
        elif line.startswith(GROK_END):
            record.append(line)
            records.append(record)
            record = []
            record_started = False
        if record_started:
            record.append(line)
except Exception as ex:
    print(str(ex))
finally:
    sys.stdin.flush()
    sys.stdin.close()

pattern = ('(Name:|lower:|upper:|Object Count:|Bytes Used:|'
           'State:|Created at:|Meta Timestamp:)')

for record in records:
    pairs = re.split(pattern, "\n".join(record))[1:]
    rec_dict = OrderedDict((pairs[i*2], pairs[i*2+1]) for i in range(8))
    # some cleanups
    for comma in ('lower:', 'Object Count:', 'Bytes Used:'):
        if rec_dict[comma].strip().endswith(','):
            rec_dict[comma] = rec_dict[comma].strip()[:-1]
        print(comma + " " + rec_dict[comma])
    if rec_dict['lower:'] == "''":
        rec_dict["lower:"] = "MIN"
    if rec_dict['upper:'] == "''":
        rec_dict["upper:"] = "MAX"
    lower_key = md5(rec_dict['lower:'].strip().encode('utf-8')).hexdigest()
    upper_key = md5(rec_dict['upper:'].strip().encode('utf-8')).hexdigest()
    graph.node(lower_key, label=rec_dict["lower:"].strip())
    graph.node(upper_key, label=rec_dict["upper:"].strip())
    edge_name = '%s %s' % (rec_dict['Name:'], rec_dict['Object Count:'])
    graph.edge(lower_key, upper_key, edge_name)

graph.render("{}-{}.gv".format("container_info", time.time()),
             view=True, format='svg')

Thanks to clay's tip on the label to allow ':'s and also adding the shard name.