igor@0: #!/usr/bin/python
igor@0: 
igor@0: 
igor@2: import sys,os,time
igor@0: import xenomips_vars
igor@0: xenomips_vars.N='1'
igor@0: sys.path.append('/etc/xen')
igor@11: 
igor@11: xen_config_name='fabergeN'
igor@21: exec 'from '+xen_config_name+' import bridges,vbridges_table, hidden_bridges, domains, broken_links, temporary_links, domain_types'
igor@11: 
igor@0: from IPython.Shell import IPShellEmbed
igor@0: 
igor@2: 
igor@2: screenrc=os.environ['HOME']+"/.screenrc_xentaur"
igor@2: 
igor@10: def run(program, *args):
igor@10:     pid = os.fork()
igor@10:     if not pid:
igor@10:         os.execvp(program, (program,) +  args)
igor@10:     return os.wait()[0]
igor@10: 
igor@10: def run_command(line):
igor@10:     #cmds=line.split()
igor@10:     #run(cmds[0],*cmds[1:])
igor@10:     run("/bin/sh", "-c", line)
igor@10: 
igor@23: def run_command_return_stdout(line):
igor@23:     p = os.popen(line)
igor@23:     output = p.read()
igor@23:     p.close()
igor@23:     return output
igor@23: 
igor@0: def create_bridges_script():
igor@0:     unbound_bridges=bridges
igor@4:     create_unbound_bridges="\n".join(map(lambda x: "sudo /usr/sbin/brctl show | awk '{print $1}' | grep -q "+x+" || sudo /usr/sbin/brctl addbr "+x, unbound_bridges))
igor@4:     create_unbound_bridges+="\n"+"\n".join(map(lambda x: "sudo /bin/ip link set "+x+" up", unbound_bridges))
igor@0: 
igor@0:     print """#!/bin/sh
igor@0: # create unbound bridges
igor@0: %(create_unbound_bridges)s
igor@0: """ % {'create_unbound_bridges' : create_unbound_bridges}
igor@0: 
igor@0: 
igor@0: def create_domains_script():
igor@0:     for N in range(len(domains)):
igor@11:         print "sudo /usr/sbin/xm create "+xen_config_name+" N="+str(N)+" && sleep 1 && sudo /usr/sbin/xm sched-credit -d $(sudo /usr/sbin/xm list | grep "+domains[N]+" | awk '{print $2}') -c 10 && sleep 1"
igor@0: 
igor@0: def destroy_domains_script():
igor@0:     for N in range(len(domains)):
igor@4:         print "sudo /usr/sbin/xm shutdown "+domains[N]
igor@0: 
igor@0: def create_screens_script():
igor@0: 
igor@7:     N=1
igor@0:     screens=[]
igor@0:     for domain in domains:
igor@11:         screens.append("screen -t "+domain+" "+str(N)+" sh -c 'while true; do sudo xm console "+domain+" ; echo Retrying in 5 seconds...; sleep 5; done'")
igor@0:         N+=1
igor@0:     screenlist="\n".join(screens)
igor@0: 
igor@11: #
igor@11: # Previous terminal acccess commands:
igor@11: #        ip="192.168.80."+str(200+N)
igor@11: #        screens.append("screen -t "+domain+"   "+str(N)+" sh -c 'while true; do ssh root@"+ip+" ; done'")
igor@11: #
igor@11: 
igor@4: #hardstatus string "\%{gk}\%c \%{yk}\%M\%d \%{wk}\%?\%-Lw\%?\%{bw}\%n*\%f\%t\%?(\%u)\%?\%{wk}\%?\%+Lw\%?"
igor@10:    
igor@11:     f=open(screenrc, "w");
igor@10:     f.write("""
igor@2: hardstatus on
igor@2: hardstatus alwayslastline
igor@2: 
igor@0: screen -t console 0 bash
igor@10: %s
igor@10: """ % (screenlist))
igor@10:     f.close()
igor@0: 
igor@0: def graph_node(node):
igor@0:     i=0
igor@0:     domain_type={}
igor@0:     for domain in domains:
igor@0:         domain_type[domain]=domain_types[i]
igor@0:         i+=1
igor@0:     return node+" [label=\"  "+node+"\",shapefile=\"shapes/all/"+domain_type[node]+".png\",fontcolor=navy,fontsize=14]"
igor@0: 
igor@0: def graph():
igor@0:     nodelist=""
igor@0:     bridgelist=""
igor@0:     linklist=""
igor@0:     physicallist=""
igor@0:     networklist=""
igor@0: 
igor@0:     nodelist=";\n    ".join(map(graph_node,nodes))
igor@0:     if nodelist: nodelist += ";"
igor@0: 
igor@5:     bridgelist=";\n    ".join(set(bridges)-set(hidden_bridges))
igor@0:     if bridgelist: bridgelist += ";"
igor@0: 
igor@0:     links=[]
igor@0:     for host, bridges_raw in vbridges_table.iteritems():
igor@0:         i=0
igor@0:         for this_bridge in bridges_raw:
igor@0:             if this_bridge in hidden_bridges:
igor@0:                 continue 
igor@0:             if [ host, this_bridge ] in broken_links:
igor@0:                 links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(i)+"/0\",style=dashed]")
igor@0:             else:
igor@0:                 links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(i)+"/0\"]")
igor@0:             i+=1
igor@0: 
igor@0:     for link in temporary_links:
igor@0:         links.append(link[0]+" -- "+link[1]+" [color=blue,len=10,w=5,weight=5]")
igor@0: 
igor@0:     linklist=";\n    ".join(links)
igor@0: 
igor@0:     graph_dot = {
igor@0:             'nodelist'      : nodelist,
igor@0:             'bridgelist'    : bridgelist,
igor@0:             'linklist'      : linklist,
igor@0:             'physicallist'  : physicallist,
igor@0:             'networklist'   : networklist,
igor@0:           }
igor@0: 
igor@10:     f = open("xenomips.dot", "w");
igor@10:     f.write ("""
igor@0: graph G {
igor@0:     edge [len=1.25];
igor@0:     splines=true;
igor@0: // nodes
igor@0: 
igor@0:     node [shape=plaintext,color=white,shapefile="shapes/cisco.bmp/router.png"];
igor@0:     %(nodelist)s
igor@0: 
igor@0: // bridges
igor@0: 
igor@6:     node [shape=none,shapefile="shapes/all/switch.png"];
igor@0:     %(bridgelist)s
igor@0: 
igor@0: // physical
igor@0: 
igor@0:     node [shape=rectangle,color=blue];
igor@0:     %(physicallist)s
igor@0: 
igor@0: // networks (not bridges, not physical)
igor@0:     node [shape=rectangle,color=green];
igor@0:     %(networklist)s
igor@0: 
igor@0: // links (between nodes and bridges)
igor@0:     %(linklist)s
igor@0: 
igor@0: };
igor@10: """ % graph_dot)
igor@10:     f.close()
igor@10:     run_command("neato -Tpng -o xenomips.png xenomips.dot ")
igor@0: 
igor@0: def start_all():
igor@0:         create_bridges_script()
igor@0:         create_screens_script()
igor@0:         create_domains_script()
igor@0:         graph()
igor@0:         print """
igor@0:         cat <<NOTE_FOR_USER
igor@0: # To view virtual network map, run:
igor@0:     gqview xenomips.png
igor@0: # To attach to VM consoles, run:
igor@0:     screen -c screenrc
igor@0: NOTE_FOR_USER
igor@0: """
igor@0: 
igor@0: def shell():
igor@0:     ipshell = IPShellEmbed()
igor@0:     ipshell()
igor@0: 
igor@0: def stop_all():
igor@4:         destroy_domains_script()
igor@0: 
igor@0: def show_usage():
igor@0:     print """Usage:
igor@0:     xentaur {start|stop|start-bridges|start-domains|stop-domains|screen|graph}
igor@0: """
igor@0: 
igor@23: #-----------------------------------------------------------------------
igor@23: # DOMAINS
igor@23: 
igor@23: def get_domain_id(domain):
igor@23:     return run_command_return_stdout("sudo xm list | awk '{if ($1 == \"'%s'\") print $2}'" % domain).rstrip("\n")
igor@23: 
igor@22: 
igor@22: #-----------------------------------------------------------------------
igor@22: # BRIDGES and IFACES
igor@22: 
igor@22: def bridge_down(bridge):
igor@22:     """
igor@22:     Turn the bridge <bridge> down
igor@22:     """
igor@22:     run_command("sudo ip link set %s down" % bridge)
igor@22: 
igor@22: def bridge_up(bridge):
igor@22:     """
igor@22:     Turn the bridge <bridge> up
igor@22:     """
igor@22:     run_command("sudo ip link set %s up" % bridge)
igor@22: 
igor@22: def show_bridge(bridge):
igor@22:     """
igor@22:     Show the state of the bridge <bridge>
igor@22:     """
igor@22:     run_command("sudo ip link show %s" % bridge)
igor@22: 
igor@23: 
igor@23: def int_disconnect(domain, int_number):
igor@23:     """
igor@23:     Disconnect the interface with the number <int_number>
igor@23:     of the domain <domain> from the bridge to which
igor@23:     it is connected
igor@23:     """
igor@23:     dom_id=get_domain_id(domain)
igor@23:     bridge=vbridges_table[domain][int_number]
igor@23:     if not bridge:
igor@23:         print "Interface %s of the %s domain is not connected" % (int_number, domain)
igor@23:         return 1
igor@23:     run_command("sudo brctl delif %s vif%s.%s" % (bridge, dom_id, int_number))
igor@23:     vbridges_table[domain][int_number]=''
igor@23: 
igor@23: def int_connect(domain, int_number, bridge):
igor@23:     """
igor@23:     Connect the interface with the number <int_number>
igor@23:     of the domain <domain> the the bridge <bridge>
igor@23:     """
igor@23:     dom_id=get_domain_id(domain)
igor@23:     
igor@23:     if vbridges_table[domain][int_number]:
igor@23:         print "Interface %s of the %s domain is connected already to the %s bridge" % (int_number, domain, vbridges_table[domain][int_number])
igor@23:         return 1
igor@23:     run_command("sudo brctl addif %s vif%s.%s" % (bridge, dom_id, int_number))
igor@23:     vbridges_table[domain][int_number]=bridge
igor@23: 
igor@0: #-----------------------------------------------------------------------
igor@0: 
igor@0: 
igor@0: def add_domain(name,type):
igor@0:     domains.append(name)
igor@0:     domain_types.append(type)
igor@0: 
igor@0: def brake_link(domain,bridge):
igor@0:     broken_links.append([domain,bridge])
igor@0: 
igor@4: wt_timeout=0.5
igor@8: def write_to(screen,string,return_to_screen=""):
igor@2:     """
igor@2:     write_to(screen,string):
igor@2: 
igor@8:         Type *string* to the specified screen(s).
igor@8:         Screen may be specified with the number *screen*,
igor@8:         with array of numbers, 
igor@8:         with array of names.
igor@2: 
igor@2:     """
igor@5:     screen_numbers=[]           # number of the screens to write to
igor@5:     if type(screen) == list:
igor@5:         screen_numbers=map(lambda x: domains.index(x)+1, screen)
igor@5:     elif type(screen) == int:
igor@5:         screen_numbers=[screen]
igor@5:     else:
igor@5:         screen_numbers=[domains.index(screen)+1]
igor@5:     
igor@5:     for screen_number in screen_numbers:
igor@5:         run_command("screen -X select "+str(screen_number))
igor@5:         time.sleep(wt_timeout)
igor@5:         for line in string.splitlines():
igor@5:             f=open('/tmp/xentaurbuf', 'w')
igor@5:             f.write(line+"\n")
igor@5:             f.close()
igor@5:             run_command("screen -X readreg p /tmp/xentaurbuf")
igor@5:             time.sleep(wt_timeout)
igor@5:             run_command("nohup screen -X paste p >& /dev/null")
igor@5:             time.sleep(wt_timeout)
igor@5:     
igor@8:         if return_to_screen != "":
igor@8:             run_command("screen -X select %s" % (return_to_screen))
igor@8:             time.sleep(wt_timeout)
igor@0: 
igor@0: #-----------------------------------------------------------------------
igor@0: 
igor@5: cisco_fa01_up="""
igor@5: ena
igor@5: conf t
igor@5: int fa0/0
igor@5: no shutdown
igor@5: exit
igor@5: int fa1/0
igor@5: no shutdown
igor@5: exit
igor@5: exit
igor@5: exit
igor@5: """
igor@5: 
igor@5: cisco_set_ip_on_int="""
igor@5: interface fa%s/0
igor@5: no ip address
igor@5: ip address %s 255.255.255.0
igor@5: exit
igor@5: """
igor@5: 
igor@5: #-----------------------------------------------------------------------
igor@0: 
igor@0: nodes=domains
igor@0: 
igor@0: if len(sys.argv) > 1:
igor@0:     if sys.argv[1] == 'start':
igor@0:         start_all()
igor@0:     if sys.argv[1] == 'stop':
igor@0:         stop_all()
igor@0:     if sys.argv[1] == 'start-bridges':
igor@3:         create_bridges_script()
igor@0:     if sys.argv[1] == 'start-domains':
igor@3:         create_domains_script()
igor@0:     if sys.argv[1] == 'stop-domains':
igor@3:         destroy_domains_script()
igor@0:     elif sys.argv[1] == 'screen':
igor@3:         create_screens_script()
igor@0:     elif sys.argv[1] == 'graph':
igor@0:         graph()
igor@0:     elif sys.argv[1] == 'shell':
igor@0:         shell()
igor@0: 
igor@0: else:
igor@0:     show_usage()
igor@0:     sys.exit(1)
igor@0: 
igor@0: sys.exit(0)
igor@0: 
igor@0: