From dab1d03d81c538966d03fb9318a4588a9e803b44 Mon Sep 17 00:00:00 2001
From: Sol Jerome <sol.jerome@gmail.com>
Date: Sat, 24 Mar 2012 11:20:07 -0500
Subject: Allow to run directly from a git checkout (#1037)

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>
---
 src/lib/Bcfg2/Server/Admin/Viz.py | 119 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 src/lib/Bcfg2/Server/Admin/Viz.py

(limited to 'src/lib/Bcfg2/Server/Admin/Viz.py')

diff --git a/src/lib/Bcfg2/Server/Admin/Viz.py b/src/lib/Bcfg2/Server/Admin/Viz.py
new file mode 100644
index 000000000..2faa423c1
--- /dev/null
+++ b/src/lib/Bcfg2/Server/Admin/Viz.py
@@ -0,0 +1,119 @@
+import getopt
+from subprocess import Popen, PIPE
+import sys
+import pipes
+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] "
+                                    "[--only-client clientname] "
+                                    "[-o output.<ext>]\n")
+    __usage__ = ("bcfg2-admin viz [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', 'Snapshots', 'Cfg', 'Pkgmgr', 'Packages',
+                            'Rules', 'Account', 'Decisions', 'Deps', 'Git',
+                            'Svn', 'Fossil', 'Bzr', 'Bundler', 'TGenshi',
+                            'SGenshi', 'Base']
+
+    def __call__(self, args):
+        Bcfg2.Server.Admin.MetadataCore.__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:
+            msg = sys.exc_info()[1]
+            print(msg)
+            print(self.__longhelp__)
+            raise SystemExit(1)
+
+        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(self.setup['repo'], hset, bset,
+                              kset, only_client, outputfile)
+        if data:
+            print(data)
+        raise SystemExit(0)
+
+    def Visualize(self, repopath, hosts=False,
+                  bundles=False, key=False, only_client=None, output=False):
+        """Build visualization of groups file."""
+        if output:
+            format = output.split('.')[-1]
+        else:
+            format = 'png'
+
+        cmd = ["dot", "-T", format]
+        if output:
+            cmd.extend(["-o", output])
+        try:
+            dotpipe = Popen(cmd, stdin=PIPE, stdout=PIPE, close_fds=True)
+        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.
+            cmd = ["dot", "-T", pipes.quote(format)]
+            if output:
+                cmd.extend(["-o", pipes.quote(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, only_client, 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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