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import getopt, popen2, lxml.etree
import Bcfg2.Server.Admin
class Viz(Bcfg2.Server.Admin.Mode):
__shorthelp__ = '''bcfg2-admin viz [--includehosts] [--includebundles] [--includekey] [-o output.png] [--raw]'''
__longhelp__ = __shorthelp__ + '\n\tProduce graphviz diagrams of metadata structures'
def __init__(self):
Bcfg2.Server.Admin.Mode.__init__(self)
self.colors = ['steelblue1', 'chartreuse', 'gold', 'magenta',
'indianred1', 'limegreen', 'orange1', 'lightblue2',
'green1', 'blue1', 'yellow1', 'darkturquoise', 'gray66']
def __call__(self, args):
Bcfg2.Server.Admin.Mode.__call__(self, args)
# First get options to the 'viz' subcommand
try:
opts, args = getopt.getopt(args, 'rhbko:',
['raw', '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 ("-r", "--raw"):
rset = True
elif 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
repopath = self.repo_path
data = self.Visualize(repopath, rset, hset, bset, kset)
if outputfile:
open(outputfile, 'w').write(data)
else:
print data
def Visualize(self, repopath, raw=False, hosts=False,
bundles=False, key=False):
'''Build visualization of groups file'''
groupdata = lxml.etree.parse(repopath + '/Metadata/groups.xml')
groupdata.xinclude()
groups = groupdata.getroot()
if raw:
dotpipe = popen2.Popen4("dd bs=4M 2>/dev/null")
else:
dotpipe = popen2.Popen4("dot -Tpng")
categories = {'default':'grey83'}
instances = {}
egroups = groups.findall("Group") + groups.findall('.//Groups/Group')
for group in egroups:
if group.get('category', False):
if not categories.has_key(group.get('category')):
categories[group.get('category')] = self.colors.pop()
try:
dotpipe.tochild.write("digraph groups {\n")
except:
print "write to dot process failed. Is graphviz installed?"
raise SystemExit(1)
dotpipe.tochild.write('\trankdir="LR";\n')
if hosts:
clients = lxml.etree.parse(repopath + \
'/Metadata/clients.xml').getroot()
for client in clients.findall('Client'):
if instances.has_key(client.get('profile')):
instances[client.get('profile')].append(client.get('name'))
else:
instances[client.get('profile')] = [client.get('name')]
for profile, clist in instances.iteritems():
clist.sort()
dotpipe.tochild.write(
'''\t"%s-instances" [ label="%s", shape="record" ];\n''' \
% (profile, '|'.join(clist)))
dotpipe.tochild.write('''\t"%s-instances" -> "group-%s";\n''' \
% (profile, profile))
if bundles:
bundles = []
[bundles.append(bund.get('name')) \
for bund in groups.findall('.//Bundle')
if bund.get('name') not in bundles]
bundles.sort()
for bundle in bundles:
dotpipe.tochild.write(
'''\t"bundle-%s" [ label="%s", shape="septagon"];\n''' \
% (bundle, bundle))
gseen = []
for group in egroups:
color = categories[group.get('category', 'default')]
if group.get('profile', 'false') == 'true':
style = "filled, bold"
else:
style = "filled"
gseen.append(group.get('name'))
dotpipe.tochild.write(
'\t"group-%s" [label="%s", style="%s", fillcolor=%s];\n' %
(group.get('name'), group.get('name'), style, color))
if bundles:
for bundle in group.findall('Bundle'):
dotpipe.tochild.write('\t"group-%s" -> "bundle-%s";\n' %
(group.get('name'), bundle.get('name')))
gfmt = '\t"group-%s" [label="%s", style="filled", fillcolor="grey83"];\n'
for group in egroups:
for parent in group.findall('Group'):
if parent.get('name') not in gseen:
dotpipe.tochild.write(gfmt % (parent.get('name'),
parent.get('name')))
gseen.append(parent.get("name"))
dotpipe.tochild.write('\t"group-%s" -> "group-%s" ;\n' %
(group.get('name'), parent.get('name')))
if key:
dotpipe.tochild.write("\tsubgraph cluster_key {\n")
dotpipe.tochild.write('''\tstyle="filled";\n''')
dotpipe.tochild.write('''\tcolor="lightblue";\n''')
dotpipe.tochild.write('''\tBundle [ shape="septagon" ];\n''')
dotpipe.tochild.write('''\tGroup [shape="ellipse"];\n''')
dotpipe.tochild.write('''\tProfile [style="bold", shape="ellipse"];\n''')
dotpipe.tochild.write('''\tHblock [label="Host1|Host2|Host3", shape="record"];\n''')
for category in categories:
dotpipe.tochild.write(
'''\t''' + category + ''' [label="''' + category + \
'''", shape="record", style="filled", fillcolor=''' + \
categories[category] + '''];\n''')
dotpipe.tochild.write('''\tlabel="Key";\n''')
dotpipe.tochild.write("\t}\n")
dotpipe.tochild.write("}\n")
dotpipe.tochild.close()
return dotpipe.fromchild.read()
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