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""" Produce graphviz diagrams of metadata structures """
import getopt
import Bcfg2.Server.Admin
from Bcfg2.Utils import Executor
class Viz(Bcfg2.Server.Admin.MetadataCore):
""" Produce graphviz diagrams of metadata structures """
__usage__ = ("[options]\n\n"
" %-32s%s\n"
" %-32s%s\n"
" %-32s%s\n"
" %-32s%s\n"
" %-32s%s\n" %
("-H, --includehosts",
"include hosts in the viz output",
"-b, --includebundles",
"include bundles in the viz output",
"-k, --includekey",
"show a key for different digraph shapes",
"-c, --only-client <clientname>",
"show only the groups, bundles for the named client",
"-o, --outfile <file>",
"write viz output to an output file"))
colors = ['steelblue1', 'chartreuse', 'gold', 'magenta',
'indianred1', 'limegreen', 'orange1', 'lightblue2',
'green1', 'blue1', 'yellow1', 'darkturquoise', 'gray66']
__plugin_blacklist__ = ['DBStats', 'Cfg', 'Pkgmgr',
'Packages', 'Rules', 'Decisions',
'Deps', 'Git', 'Svn', 'Fossil', 'Bzr', 'Bundler']
def __call__(self, args):
# First get options to the 'viz' subcommand
try:
opts, args = getopt.getopt(args, 'Hbkc:o:',
['includehosts', 'includebundles',
'includekey', 'only-client=',
'outfile='])
except getopt.GetoptError:
self.usage()
hset = False
bset = False
kset = False
only_client = None
outputfile = False
for opt, arg in opts:
if opt in ("-H", "--includehosts"):
hset = True
elif opt in ("-b", "--includebundles"):
bset = True
elif opt in ("-k", "--includekey"):
kset = True
elif opt in ("-c", "--only-client"):
only_client = arg
elif opt in ("-o", "--outfile"):
outputfile = arg
data = self.Visualize(hset, bset, kset, only_client, outputfile)
if data:
print(data)
def Visualize(self, hosts=False, bundles=False, key=False,
only_client=None, output=None):
"""Build visualization of groups file."""
if output:
fmt = output.split('.')[-1]
else:
fmt = 'png'
exc = Executor()
cmd = ["dot", "-T", fmt]
if output:
cmd.extend(["-o", output])
idata = ["digraph groups {",
'\trankdir="LR";',
self.metadata.viz(hosts, bundles,
key, only_client, self.colors)]
if key:
idata.extend([
"\tsubgraph cluster_key {",
'\tstyle="filled";',
'\tcolor="lightblue";',
'\tBundle [ shape="septagon" ];',
'\tGroup [shape="ellipse"];',
'\tProfile [style="bold", shape="ellipse"];',
'\tHblock [label="Host1|Host2|Host3",shape="record"];',
'\tlabel="Key";',
"\t}"])
idata.append("}")
try:
result = exc.run(cmd, inputdata=idata)
except OSError:
# on some systems (RHEL 6), you cannot run dot with
# shell=True. on others (Gentoo with Python 2.7), you
# must. In yet others (RHEL 5), either way works. I have
# no idea what the difference is, but it's kind of a PITA.
result = exc.run(cmd, shell=True, inputdata=idata)
if not result.success:
print("Error running %s: %s" % (cmd, result.error))
raise SystemExit(result.retval)
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