#!/usr/bin/python
+import sys
import socket
import re
+import pygraphviz
+
+from optparse import OptionParser
+
from sfa.client.sfi import Sfi
from sfa.util.sfalogging import sfa_logger,sfa_logger_goes_to_console
import sfa.util.xmlrpcprotocol as xmlrpcprotocol
-m_url_with_proto=re.compile("\w+://(?P<hostname>[\w\-\.]+):(?P<port>[0-9]+)/.*")
+m_url_with_proto=re.compile("\w+://(?P<hostname>[\w\-\.]+):(?P<port>[0-9]+).*")
m_url_without_proto=re.compile("(?P<hostname>[\w\-\.]+):(?P<port>[0-9]+).*")
def url_to_hostname_port (url):
- print 'url',url
match=m_url_with_proto.match(url)
if match:
return (match.group('hostname'),match.group('port'))
###
class Interface:
- def __init__ (self,url,name=None):
- self.names=[]
- self.set_name(name)
+
+ def __init__ (self,url):
+ self._url=url
try:
(self.hostname,self.port)=url_to_hostname_port(url)
self.ip=socket.gethostbyname(self.hostname)
except:
import traceback
traceback.print_exc()
- self.hostname="undefined"
+ self.hostname="unknown"
+ self.ip='0.0.0.0'
self.port="???"
self.probed=True
self._version={}
- def equal (self,against):
- return (self.ip == against.ip) and (self.port == against.port)
-
- def set_name (self,name):
- if name and name not in self.names:
- self.names.append(name)
-
def url(self):
- return "http://%s:%s"%(self.hostname,self.port)
+# return "http://%s:%s/"%(self.hostname,self.port)
+ return self._url
+
+ # this is used as a key for creating graph nodes and to avoid duplicates
+ def uid (self):
+ return "%s:%s"%(self.ip,self.port)
# connect to server and trigger GetVersion
def get_version(self):
sfa_logger().info('issuing get version at %s'%url)
server=xmlrpcprotocol.get_server(url, key_file, cert_file, options)
self._version=server.GetVersion()
-# pdb.set_trace()
except:
self._version={}
self.probed=True
return self._version
+ @staticmethod
+ def multi_lines_label(*lines):
+ return '<<TABLE BORDER="0" CELLBORDER="0"><TR><TD>' + \
+ '</TD></TR><TR><TD>'.join(lines) + \
+ '</TD></TR></TABLE>>'
+
+ # default is for when we can't determine the type of the service
+ # typically the server is down, or we can't authenticate, or it's too old code
+ shapes = {"registry": "diamond", "slicemgr":"ellipse", "aggregate":"box", 'default':'plaintext'}
+ abbrevs = {"registry": "REG", "slicemgr":"SA", "aggregate":"AM", 'default':'[unknown]>'}
+
+ # return a dictionary that translates into the node's attr
+ def get_layout (self):
+ layout={}
+ ### retrieve cached GetVersion
+ version=self.get_version()
+ # set the href; xxx would make sense to try and 'guess' the web URL, not the API's one...
+ layout['href']=self.url()
+ ### set html-style label
+ ### see http://www.graphviz.org/doc/info/shapes.html#html
+ # if empty the service is unreachable
+ if not version:
+ label="offline"
+ else:
+ label=''
+ try: abbrev=Interface.abbrevs[version['interface']]
+ except: abbrev=['default']
+ label += abbrev
+ if 'hrn' in version: label += " %s"%version['hrn']
+ else: label += "[no hrn]"
+ if 'code_tag' in version:
+ label += " %s"%version['code_tag']
+ if 'testbed' in version:
+ label += " (%s)"%version['testbed']
+ layout['label']=Interface.multi_lines_label(self.url(),label)
+ ### set shape
+ try: shape=Interface.shapes[version['interface']]
+ except: shape=Interface.shapes['default']
+ layout['shape']=shape
+ ### fill color to outline wrongly configured bodies
+ print 'Version for %s'%self.url(),version
+ if 'sfa' not in version:
+ layout['style']='filled'
+ layout['fillcolor']='gray'
+ return layout
+
class SfaScan:
# provide the entry points (a list of interfaces)
def __init__ (self):
pass
+ def graph (self,entry_points):
+ graph=pygraphviz.AGraph(directed=True)
+ self.scan(entry_points,graph)
+ return graph
+
# scan from the given interfaces as entry points
- def scan(self,interfaces):
- import pdb
-# pdb.set_trace()
+ def scan(self,interfaces,graph):
if not isinstance(interfaces,list):
interfaces=[interfaces]
- # should add nodes, but with what name ?
+
+ # remember node to interface mapping
+ node2interface={}
+ # add entry points right away using the interface uid's as a key
to_scan=interfaces
+ for i in interfaces:
+ graph.add_node(i.uid())
+ node2interface[graph.get_node(i.uid())]=i
scanned=[]
- def was_scanned (interface):
- for i in scanned:
- if interface.equal(i): return i
- return False
# keep on looping until we reach a fixed point
+ # don't worry about abels and shapes that will get fixed later on
while to_scan:
for interface in to_scan:
+ # performing xmlrpc call
version=interface.get_version()
- if 'peers' in version:
+ # 'sfa' is expected if the call succeeded at all
+ # 'peers' is needed as well as AMs typically don't have peers
+ if 'sfa' in version and 'peers' in version:
+ # proceed with neighbours
for (next_name,next_url) in version['peers'].items():
- # should add edge
next_interface=Interface(next_url)
- seen_interface=was_scanned(next_interface)
- if seen_interface:
- # record name
- seen_interface.set_name(next_name)
- else:
- sfa_logger().info('adding %s'%next_interface.url())
+ # locate or create node in graph
+ try:
+ # if found, we're good with this one
+ next_node=graph.get_node(next_interface.uid())
+ except:
+ # otherwise, let's move on with it
+ graph.add_node(next_interface.uid())
+ next_node=graph.get_node(next_interface.uid())
+ node2interface[next_node]=next_interface
to_scan.append(next_interface)
-
+ graph.add_edge(interface.uid(),next_interface.uid())
scanned.append(interface)
to_scan.remove(interface)
+ # we've scanned the whole graph, let's get the labels and shapes right
+ for node in graph.nodes():
+ interface=node2interface.get(node,None)
+ if interface:
+ for (k,v) in interface.get_layout().items():
+ node.attr[k]=v
+ else:
+ sfa_logger().error("MISSED interface with node %s"%node)
+default_outfiles=['sfa.png','sfa.svg','sfa.dot']
+
def main():
sfa_logger_goes_to_console()
+ usage="%prog [options] url-entry-point(s)"
+ parser=OptionParser(usage=usage)
+ parser.add_option("-o","--output",action='append',dest='outfiles',default=[],
+ help="output filenames (cumulative) - defaults are %r"%default_outfiles)
+ (options,args)=parser.parse_args()
+ if not args:
+ parser.print_help()
+ sys.exit(1)
+ if not options.outfiles:
+ options.outfiles=default_outfiles
scanner=SfaScan()
- entry=Interface("http://www.planet-lab.eu:12345/")
- scanner.scan(entry)
+ entries = [ Interface(entry) for entry in args ]
+ g=scanner.graph(entries)
+ sfa_logger().info("creating layout")
+ g.layout(prog='dot')
+ for outfile in options.outfiles:
+ sfa_logger().info("drawing in %s"%outfile)
+ g.draw(outfile)
+ sfa_logger().info("done")
if __name__ == '__main__':
main()
git://git.onelab.eu / sfa.git / blobdiff