xentaur

annotate xentaur.py @ 33:c68d804c3017

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* Trying to add classes (bridge class)
* Configuration templates
* Function save() --- dumps network topology
author igor
date Sat Sep 22 02:25:18 2007 +0300 (2007-09-22)
parents bf2d7c5bb340
children 244f1602496a
rev   line source
igor@0 1 #!/usr/bin/python
igor@0 2
igor@0 3
igor@2 4 import sys,os,time
igor@0 5 import xenomips_vars
igor@0 6 xenomips_vars.N='1'
igor@0 7 sys.path.append('/etc/xen')
igor@11 8
igor@33 9 xen_config_name='four_quaggasN'
igor@32 10 try:
igor@32 11 exec 'from '+xen_config_name+' import bridges,vbridges_table, hidden_bridges, domains, broken_links, temporary_links, domain_types'
igor@32 12 except:
igor@32 13 print "Can't find module: %s " % (xen_config_name)
igor@32 14 sys.exit(0)
igor@11 15
igor@29 16 bridges_turned_down=[]
igor@29 17
igor@0 18 from IPython.Shell import IPShellEmbed
igor@0 19
igor@2 20
igor@2 21 screenrc=os.environ['HOME']+"/.screenrc_xentaur"
igor@2 22
igor@10 23 def run(program, *args):
igor@10 24 pid = os.fork()
igor@10 25 if not pid:
igor@10 26 os.execvp(program, (program,) + args)
igor@10 27 return os.wait()[0]
igor@10 28
igor@10 29 def run_command(line):
igor@10 30 #cmds=line.split()
igor@10 31 #run(cmds[0],*cmds[1:])
igor@10 32 run("/bin/sh", "-c", line)
igor@10 33
igor@23 34 def run_command_return_stdout(line):
igor@23 35 p = os.popen(line)
igor@23 36 output = p.read()
igor@23 37 p.close()
igor@23 38 return output
igor@23 39
igor@0 40 def create_bridges_script():
igor@0 41 unbound_bridges=bridges
igor@4 42 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 43 create_unbound_bridges+="\n"+"\n".join(map(lambda x: "sudo /bin/ip link set "+x+" up", unbound_bridges))
igor@0 44
igor@0 45 print """#!/bin/sh
igor@0 46 # create unbound bridges
igor@0 47 %(create_unbound_bridges)s
igor@0 48 """ % {'create_unbound_bridges' : create_unbound_bridges}
igor@0 49
igor@0 50
igor@0 51 def create_domains_script():
igor@0 52 for N in range(len(domains)):
igor@11 53 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 54
igor@0 55 def destroy_domains_script():
igor@0 56 for N in range(len(domains)):
igor@4 57 print "sudo /usr/sbin/xm shutdown "+domains[N]
igor@0 58
igor@0 59 def create_screens_script():
igor@7 60 N=1
igor@0 61 screens=[]
igor@0 62 for domain in domains:
igor@11 63 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 64 N+=1
igor@0 65 screenlist="\n".join(screens)
igor@0 66
igor@11 67 #
igor@11 68 # Previous terminal acccess commands:
igor@11 69 # ip="192.168.80."+str(200+N)
igor@11 70 # screens.append("screen -t "+domain+" "+str(N)+" sh -c 'while true; do ssh root@"+ip+" ; done'")
igor@11 71 #
igor@11 72
igor@4 73 #hardstatus string "\%{gk}\%c \%{yk}\%M\%d \%{wk}\%?\%-Lw\%?\%{bw}\%n*\%f\%t\%?(\%u)\%?\%{wk}\%?\%+Lw\%?"
igor@10 74
igor@11 75 f=open(screenrc, "w");
igor@10 76 f.write("""
igor@2 77 hardstatus on
igor@2 78 hardstatus alwayslastline
igor@2 79
igor@0 80 screen -t console 0 bash
igor@10 81 %s
igor@10 82 """ % (screenlist))
igor@10 83 f.close()
igor@0 84
igor@0 85 def graph_node(node):
igor@0 86 i=0
igor@0 87 domain_type={}
igor@0 88 for domain in domains:
igor@0 89 domain_type[domain]=domain_types[i]
igor@0 90 i+=1
nata@31 91 return node+" [label=\" "+node+"\",shapefile=\"shapes/all/"+domain_type[node]+".png\",fontcolor=black,fontsize=16]"
igor@0 92
igor@29 93 def graph_bridge(bridge):
igor@29 94 if bridge in hidden_bridges:
igor@29 95 return ""
igor@29 96 if bridge in bridges_turned_down:
igor@29 97 return "%s [shape=none,shapefile=\"shapes/all/switch_turned_down.png\"]" % (bridge)
igor@29 98 else:
igor@29 99 return "%s [shape=none,shapefile=\"shapes/all/switch.png\"]" % (bridge)
igor@29 100
igor@29 101
igor@0 102 def graph():
igor@0 103 nodelist=""
igor@0 104 bridgelist=""
igor@0 105 linklist=""
igor@0 106 physicallist=""
igor@0 107 networklist=""
igor@0 108
igor@0 109 nodelist=";\n ".join(map(graph_node,nodes))
igor@0 110 if nodelist: nodelist += ";"
igor@0 111
igor@29 112 bridgelist=";\n ".join(map(graph_bridge,bridges))
igor@0 113 if bridgelist: bridgelist += ";"
igor@0 114
igor@0 115 links=[]
igor@0 116 for host, bridges_raw in vbridges_table.iteritems():
igor@0 117 i=0
igor@0 118 for this_bridge in bridges_raw:
igor@27 119 if this_bridge in hidden_bridges or not this_bridge:
igor@0 120 continue
igor@28 121 if not [ host, bridges_raw.index(this_bridge), this_bridge ] in temporary_links:
igor@28 122 links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(bridges_raw.index(this_bridge))+"/0\"]")
igor@27 123 i+=1
igor@27 124 # if [ host, this_bridge ] in broken_links:
igor@27 125 # links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(i)+"/0\",style=dashed]")
igor@27 126 # else:
igor@27 127 # links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(i)+"/0\"]")
igor@0 128
igor@0 129 for link in temporary_links:
igor@28 130 links.append(link[0]+" -- "+link[2]+" [taillabel=\"fa"+str(link[1])+"/0\",color=blue,len=10,w=5,weight=5]")
igor@0 131
igor@27 132 for link in broken_links:
igor@28 133 links.append(link[0]+" -- "+link[2]+" [taillabel=\"fa"+str(link[1])+"/0\",style=dashed]")
igor@27 134
igor@0 135 linklist=";\n ".join(links)
igor@0 136
igor@0 137 graph_dot = {
igor@0 138 'nodelist' : nodelist,
igor@0 139 'bridgelist' : bridgelist,
igor@0 140 'linklist' : linklist,
igor@0 141 'physicallist' : physicallist,
igor@0 142 'networklist' : networklist,
igor@0 143 }
igor@0 144
igor@10 145 f = open("xenomips.dot", "w");
igor@10 146 f.write ("""
igor@0 147 graph G {
igor@0 148 edge [len=1.25];
igor@0 149 splines=true;
igor@0 150 // nodes
igor@0 151
igor@0 152 node [shape=plaintext,color=white,shapefile="shapes/cisco.bmp/router.png"];
igor@0 153 %(nodelist)s
igor@0 154
igor@0 155 // bridges
igor@0 156
igor@6 157 node [shape=none,shapefile="shapes/all/switch.png"];
igor@0 158 %(bridgelist)s
igor@0 159
igor@0 160 // physical
igor@0 161
igor@0 162 node [shape=rectangle,color=blue];
igor@0 163 %(physicallist)s
igor@0 164
igor@0 165 // networks (not bridges, not physical)
igor@0 166 node [shape=rectangle,color=green];
igor@0 167 %(networklist)s
igor@0 168
igor@0 169 // links (between nodes and bridges)
igor@0 170 %(linklist)s
igor@0 171
igor@0 172 };
igor@10 173 """ % graph_dot)
igor@10 174 f.close()
igor@10 175 run_command("neato -Tpng -o xenomips.png xenomips.dot ")
igor@0 176
igor@27 177 def autoredraw():
igor@27 178 graph()
igor@27 179
igor@0 180 def start_all():
igor@0 181 create_bridges_script()
igor@0 182 create_screens_script()
igor@0 183 create_domains_script()
igor@0 184 graph()
igor@0 185 print """
igor@0 186 cat <<NOTE_FOR_USER
igor@0 187 # To view virtual network map, run:
igor@0 188 gqview xenomips.png
igor@0 189 # To attach to VM consoles, run:
igor@0 190 screen -c screenrc
igor@0 191 NOTE_FOR_USER
igor@0 192 """
igor@0 193
igor@0 194 def shell():
nata@31 195 autoredraw()
igor@0 196 ipshell = IPShellEmbed()
igor@0 197 ipshell()
igor@0 198
igor@0 199 def stop_all():
igor@4 200 destroy_domains_script()
igor@0 201
igor@0 202 def show_usage():
igor@0 203 print """Usage:
igor@0 204 xentaur {start|stop|start-bridges|start-domains|stop-domains|screen|graph}
igor@0 205 """
igor@0 206
igor@33 207 def save():
igor@33 208 print "network =", xen_config_name
igor@33 209 print "domains =", domains
igor@33 210 print "domain_types =", domain_types
igor@33 211 print "bridges =", bridges
igor@33 212 print "vbridges_table =", vbridges_table
igor@33 213 print "hidden_bridges =", hidden_bridges
igor@33 214 print "broken_links =", broken_links
igor@33 215 print "temporary_links =", temporary_links
igor@33 216 print "bridges_turned_down =", bridges_turned_down
igor@33 217
igor@33 218 #-----------------------------------------------------------------------
igor@33 219 # CLASSES
igor@33 220
igor@33 221 class Bridge:
igor@33 222 def __init__ (self,name):
igor@33 223 self.name=name
igor@33 224 def up(self):
igor@33 225 bridge_up(self.name)
igor@33 226 def down(self):
igor@33 227 bridge_down(self.name)
igor@33 228 def show(self):
igor@33 229 show_bridge(self.name)
igor@33 230 def dump_start(self,filter=""):
igor@33 231 dump_start(self.name,filter)
igor@33 232
igor@33 233
igor@23 234 #-----------------------------------------------------------------------
igor@23 235 # DOMAINS
igor@23 236
igor@23 237 def get_domain_id(domain):
igor@23 238 return run_command_return_stdout("sudo xm list | awk '{if ($1 == \"'%s'\") print $2}'" % domain).rstrip("\n")
igor@23 239
igor@22 240
igor@22 241 #-----------------------------------------------------------------------
igor@22 242 # BRIDGES and IFACES
igor@22 243
igor@22 244 def bridge_down(bridge):
igor@22 245 """
igor@22 246 Turn the bridge <bridge> down
igor@22 247 """
igor@29 248 if bridge in bridges_turned_down:
igor@29 249 print "Bridge %s is turned down already" % (bridge)
igor@29 250 else:
igor@29 251 bridges_turned_down.append(bridge)
igor@29 252 run_command("sudo ip link set %s down" % bridge)
igor@29 253 autoredraw()
igor@22 254
igor@22 255 def bridge_up(bridge):
igor@22 256 """
igor@22 257 Turn the bridge <bridge> up
igor@22 258 """
igor@29 259 if not (bridge in bridges_turned_down):
igor@29 260 print "Bridge %s is turned up already" % (bridge)
igor@29 261 else:
igor@29 262 bridges_turned_down.remove(bridge)
igor@29 263 run_command("sudo ip link set %s up" % bridge)
igor@29 264 autoredraw()
igor@22 265
igor@22 266 def show_bridge(bridge):
igor@22 267 """
igor@22 268 Show the state of the bridge <bridge>
igor@22 269 """
igor@22 270 run_command("sudo ip link show %s" % bridge)
igor@22 271
igor@23 272
igor@23 273 def int_disconnect(domain, int_number):
igor@23 274 """
igor@23 275 Disconnect the interface with the number <int_number>
igor@23 276 of the domain <domain> from the bridge to which
igor@23 277 it is connected
igor@23 278 """
igor@23 279 dom_id=get_domain_id(domain)
igor@23 280 bridge=vbridges_table[domain][int_number]
igor@23 281 if not bridge:
igor@23 282 print "Interface %s of the %s domain is not connected" % (int_number, domain)
igor@23 283 return 1
igor@23 284 run_command("sudo brctl delif %s vif%s.%s" % (bridge, dom_id, int_number))
igor@23 285 vbridges_table[domain][int_number]=''
igor@28 286 if [ domain, int_number, bridge ] in temporary_links:
igor@28 287 temporary_links.remove([ domain, int_number, bridge ])
igor@27 288 else:
igor@28 289 broken_links.append([ domain, int_number, bridge ])
igor@27 290 autoredraw()
igor@23 291
igor@23 292 def int_connect(domain, int_number, bridge):
igor@23 293 """
igor@23 294 Connect the interface with the number <int_number>
igor@24 295 of the domain <domain> to the bridge <bridge>
igor@23 296 """
igor@23 297 dom_id=get_domain_id(domain)
igor@23 298
igor@23 299 if vbridges_table[domain][int_number]:
igor@23 300 print "Interface %s of the %s domain is connected already to the %s bridge" % (int_number, domain, vbridges_table[domain][int_number])
igor@23 301 return 1
igor@23 302 run_command("sudo brctl addif %s vif%s.%s" % (bridge, dom_id, int_number))
igor@23 303 vbridges_table[domain][int_number]=bridge
igor@28 304 if [ domain, int_number, bridge ] in broken_links:
igor@28 305 broken_links.remove([ domain, int_number, bridge ])
igor@27 306 else:
igor@28 307 temporary_links.append([ domain, int_number, bridge ])
igor@27 308 autoredraw()
igor@23 309
igor@24 310 def int_reconnect(domain, int_number, bridge):
igor@24 311 """
igor@24 312 Reconnect the interface with the number <int_number>
igor@24 313 of the domain <domain> from the bridge to which
igor@24 314 it is connected to the bridge <bridge>
igor@24 315 """
igor@24 316 int_disconnect(domain, int_number)
igor@24 317 int_connect(domain, int_number, bridge)
igor@24 318
igor@24 319 def show_int(domain, int_number):
igor@25 320 """
igor@25 321 Show information about the interface <int_nuber>
igor@25 322 of the domain <domain>
igor@25 323 """
igor@26 324 return vbridges_table[domain][int_number]
igor@24 325
igor@28 326
igor@28 327 def dump_start(bridge, filter=""):
igor@32 328 try:
igor@32 329 print "Writing dump... (press Ctrl-C to stop)"
igor@32 330 run_command("sudo tcpdump -w xentaur.dump -i %s %s > /dev/null 2>&1 " % (bridge,filter))
igor@32 331 except:
igor@32 332 print "Done.\n Dump is written to xentaur.dump"
igor@28 333 return 0
igor@28 334
igor@28 335 def dump_stop():
igor@28 336 return 0
igor@33 337
igor@33 338
igor@33 339 #-----------------------------------------------------------------------
igor@33 340 # CONFIGURATION TEMPLATES
igor@33 341
igor@33 342
igor@33 343 def configure_ip_addresses(doms=domains):
igor@33 344 return 0
igor@33 345
igor@33 346 def configure_ospf(doms=domains):
igor@33 347 return 0
igor@33 348
igor@33 349 def configure_save(doms=domains):
igor@33 350 write_to(doms,"\nwr\n")
igor@33 351
igor@0 352 #-----------------------------------------------------------------------
igor@0 353
igor@0 354
igor@0 355 def add_domain(name,type):
igor@0 356 domains.append(name)
igor@0 357 domain_types.append(type)
igor@0 358
igor@0 359 def brake_link(domain,bridge):
igor@0 360 broken_links.append([domain,bridge])
igor@0 361
igor@4 362 wt_timeout=0.5
igor@8 363 def write_to(screen,string,return_to_screen=""):
igor@2 364 """
igor@2 365 write_to(screen,string):
igor@2 366
igor@8 367 Type *string* to the specified screen(s).
igor@8 368 Screen may be specified with the number *screen*,
igor@8 369 with array of numbers,
igor@8 370 with array of names.
igor@2 371
igor@2 372 """
igor@5 373 screen_numbers=[] # number of the screens to write to
igor@5 374 if type(screen) == list:
igor@5 375 screen_numbers=map(lambda x: domains.index(x)+1, screen)
igor@5 376 elif type(screen) == int:
igor@5 377 screen_numbers=[screen]
igor@5 378 else:
igor@5 379 screen_numbers=[domains.index(screen)+1]
igor@5 380
igor@5 381 for screen_number in screen_numbers:
igor@5 382 run_command("screen -X select "+str(screen_number))
igor@5 383 time.sleep(wt_timeout)
igor@5 384 for line in string.splitlines():
igor@5 385 f=open('/tmp/xentaurbuf', 'w')
igor@5 386 f.write(line+"\n")
igor@5 387 f.close()
igor@5 388 run_command("screen -X readreg p /tmp/xentaurbuf")
igor@5 389 time.sleep(wt_timeout)
igor@5 390 run_command("nohup screen -X paste p >& /dev/null")
igor@5 391 time.sleep(wt_timeout)
igor@5 392
igor@8 393 if return_to_screen != "":
igor@8 394 run_command("screen -X select %s" % (return_to_screen))
igor@8 395 time.sleep(wt_timeout)
igor@0 396
igor@0 397 #-----------------------------------------------------------------------
igor@0 398
igor@5 399 cisco_fa01_up="""
igor@5 400 ena
igor@5 401 conf t
igor@5 402 int fa0/0
igor@5 403 no shutdown
igor@5 404 exit
igor@5 405 int fa1/0
igor@5 406 no shutdown
igor@5 407 exit
igor@5 408 exit
igor@5 409 exit
igor@5 410 """
igor@5 411
igor@5 412 cisco_set_ip_on_int="""
igor@5 413 interface fa%s/0
igor@5 414 no ip address
igor@5 415 ip address %s 255.255.255.0
igor@5 416 exit
igor@5 417 """
igor@5 418
igor@33 419
igor@0 420
igor@0 421 nodes=domains
igor@0 422
igor@0 423 if len(sys.argv) > 1:
igor@0 424 if sys.argv[1] == 'start':
igor@0 425 start_all()
igor@0 426 if sys.argv[1] == 'stop':
igor@0 427 stop_all()
igor@0 428 if sys.argv[1] == 'start-bridges':
igor@3 429 create_bridges_script()
igor@0 430 if sys.argv[1] == 'start-domains':
igor@3 431 create_domains_script()
igor@0 432 if sys.argv[1] == 'stop-domains':
igor@3 433 destroy_domains_script()
igor@0 434 elif sys.argv[1] == 'screen':
igor@3 435 create_screens_script()
igor@0 436 elif sys.argv[1] == 'graph':
igor@0 437 graph()
igor@0 438 elif sys.argv[1] == 'shell':
igor@0 439 shell()
igor@0 440
igor@0 441 else:
igor@0 442 show_usage()
igor@0 443 sys.exit(1)
igor@0 444
igor@0 445 sys.exit(0)
igor@0 446
igor@0 447