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import getopt
from subprocess import Popen, PIPE
import Bcfg2.Server.Admin
class Viz(Bcfg2.Server.Admin.MetadataCore):
__shorthelp__ = "Produce graphviz diagrams of metadata structures"
__longhelp__ = (__shorthelp__ + "\n\nbcfg2-admin viz [--includehosts] "
"[--includebundles] [--includekey] "
"[-o output.png] [--raw]")
__usage__ = ("bcfg2-admin viz [options]\n\n"
" %-25s%s\n"
" %-25s%s\n"
" %-25s%s\n"
" %-25s%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",
"-o, --outfile <file>",
"write viz output to an output file"))
colors = ['steelblue1', 'chartreuse', 'gold', 'magenta',
'indianred1', 'limegreen', 'orange1', 'lightblue2',
'green1', 'blue1', 'yellow1', 'darkturquoise', 'gray66']
def __init__(self, cfile):
Bcfg2.Server.Admin.MetadataCore.__init__(self, cfile,
self.__usage__)
def __call__(self, args):
Bcfg2.Server.Admin.MetadataCore.__call__(self, args)
# First get options to the 'viz' subcommand
try:
opts, args = getopt.getopt(args, 'Hbko:',
['includehosts', 'includebundles',
'includekey', 'outfile='])
except getopt.GetoptError, msg:
print msg
raise SystemExit(1)
rset = False
hset = False
bset = False
kset = False
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 ("-o", "--outfile"):
outputfile = arg
data = self.Visualize(self.get_repo_path(), hset, bset,
kset, outputfile)
print data
raise SystemExit, 0
def Visualize(self, repopath, hosts=False,
bundles=False, key=False, output=False):
'''Build visualization of groups file'''
if output:
format = output.split('.')[-1]
else:
format = 'png'
cmd = "dot -T%s" % (format)
if output:
cmd += " -o %s" % output
dotpipe = Popen(cmd, shell=True, stdin=PIPE,
stdout=PIPE, close_fds=True)
try:
dotpipe.stdin.write("digraph groups {\n")
except:
print "write to dot process failed. Is graphviz installed?"
raise SystemExit(1)
dotpipe.stdin.write('\trankdir="LR";\n')
dotpipe.stdin.write(self.metadata.viz(hosts, bundles,
key, self.colors))
if key:
dotpipe.stdin.write("\tsubgraph cluster_key {\n")
dotpipe.stdin.write('''\tstyle="filled";\n''')
dotpipe.stdin.write('''\tcolor="lightblue";\n''')
dotpipe.stdin.write('''\tBundle [ shape="septagon" ];\n''')
dotpipe.stdin.write('''\tGroup [shape="ellipse"];\n''')
dotpipe.stdin.write('''\tProfile [style="bold", shape="ellipse"];\n''')
dotpipe.stdin.write('''\tHblock [label="Host1|Host2|Host3", shape="record"];\n''')
dotpipe.stdin.write('''\tlabel="Key";\n''')
dotpipe.stdin.write("\t}\n")
dotpipe.stdin.write("}\n")
dotpipe.stdin.close()
return dotpipe.stdout.read()
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