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# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
import socket
import xen.ext.xc
xc = xen.ext.xc.new()
import sxp
import XendRoot
xroot = XendRoot.instance()
import XendDB
import EventServer
eserver = EventServer.instance()
from xen.xend.server import SrvDaemon
daemon = SrvDaemon.instance()
class XendConsoleInfo:
"""Console information record.
"""
def __init__(self, console, dom1, port1, dom2, port2, conn=None):
self.console = console
self.dom1 = int(dom1)
self.port1 = int(port1)
self.dom2 = int(dom2)
self.port2 = int(port2)
self.conn = conn
#self.id = "%d.%d-%d.%d" % (self.dom1, self.port1, self.dom2, self.port2)
self.id = str(port1)
def __str__(self):
s = "console"
s += " id=%s" % self.id
s += " src=%d.%d" % (self.dom1, self.port1)
s += " dst=%d.%d" % (self.dom2, self.port2)
s += " port=%s" % self.console
if self.conn:
s += " conn=%s:%s" % (self.conn[0], self.conn[1])
return s
def sxpr(self):
sxpr = ['console',
['id', self.id],
['src', self.dom1, self.port1],
['dst', self.dom2, self.port2],
['port', self.console],
]
if self.conn:
sxpr.append(['connected', self.conn[0], self.conn[1]])
return sxpr
def connection(self):
return self.conn
def update(self, consinfo):
conn = sxp.child(consinfo, 'connected')
if conn:
self.conn = conn[1:]
else:
self.conn = None
def uri(self):
"""Get the uri to use to connect to the console.
This will be a telnet: uri.
return uri
"""
host = socket.gethostname()
return "telnet://%s:%s" % (host, self.console)
class XendConsole:
dbpath = "console"
def __init__(self):
self.db = XendDB.XendDB(self.dbpath)
self.console = {}
self.console_db = self.db.fetchall("")
if xroot.get_rebooted():
print 'XendConsole> rebooted: removing all console info'
self.rm_all()
eserver.subscribe('xend.domain.died', self.onDomainDied)
eserver.subscribe('xend.domain.destroy', self.onDomainDied)
def rm_all(self):
"""Remove all console info. Used after reboot.
"""
for (k, v) in self.console_db.items():
self._delete_console(k)
def refresh(self):
consoles = daemon.consoles()
cons = {}
for consinfo in consoles:
id = str(sxp.child_value(consinfo, 'id'))
cons[id] = consinfo
if id not in self.console:
self._new_console(consinfo)
for c in self.console.values():
consinfo = cons.get(c.id)
if consinfo:
c.update(consinfo)
else:
self._delete_console(c.id)
def onDomainDied(self, event, val):
dom = int(val)
#print 'XendConsole>onDomainDied', 'event', event, "dom=", dom
for c in self.consoles():
#print 'onDomainDied', "dom=", dom, "dom1=", c.dom1, "dom2=", c.dom2
if (c.dom1 == dom) or (c.dom2 == dom):
'XendConsole>onDomainDied', 'delete console dom=', dom
ctrl = daemon.get_domain_console(dom)
if ctrl:
ctrl.close()
self._delete_console(c.id)
def sync(self):
self.db.saveall("", self.console_db)
def sync_console(self, id):
self.db.save(id, self.console_db[id])
def _new_console(self, consinfo):
# todo: xen needs a call to get current domain id.
dom1 = 0
port1 = sxp.child_value(consinfo, 'local_port')
dom2 = sxp.child_value(consinfo, 'domain')
port2 = sxp.child_value(consinfo, 'remote_port')
console = sxp.child_value(consinfo, 'console_port')
info = XendConsoleInfo(console, dom1, int(port1), int(dom2), int(port2))
info.update(consinfo)
self._add_console(info.id, info)
return info
def _add_console(self, id, info):
self.console[id] = info
self.console_db[id] = info.sxpr()
self.sync_console(id)
def _delete_console(self, id):
if id in self.console:
del self.console[id]
if id in self.console_db:
del self.console_db[id]
self.db.delete(id)
def console_ls(self):
self.refresh()
return self.console.keys()
def consoles(self):
self.refresh()
return self.console.values()
def console_create(self, dom):
consinfo = daemon.console_create(dom)
info = self._new_console(consinfo)
return info
def console_get(self, id):
self.refresh()
return self.console.get(id)
def console_delete(self, id):
self._delete_console(id)
def console_disconnect(self, id):
id = int(id)
daemon.console_disconnect(id)
def instance():
global inst
try:
inst
except:
inst = XendConsole()
return inst
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