-#
-
"""LibVirt slivers"""
-import accounts
-import logger
+import sys
+import os, os.path
import subprocess
-import os
-import os.path
+import pprint
+
import libvirt
-import sys
-import shutil
-import bwlimit
-import cgroups
-from string import Template
+from account import Account
+import logger
+import plnode.bwlimit as bwlimit
+import cgroups
STATES = {
- libvirt.VIR_DOMAIN_NOSTATE: 'no state',
- libvirt.VIR_DOMAIN_RUNNING: 'running',
- libvirt.VIR_DOMAIN_BLOCKED: 'blocked on resource',
- libvirt.VIR_DOMAIN_PAUSED: 'paused by user',
+ libvirt.VIR_DOMAIN_NOSTATE: 'no state',
+ libvirt.VIR_DOMAIN_RUNNING: 'running',
+ libvirt.VIR_DOMAIN_BLOCKED: 'blocked on resource',
+ libvirt.VIR_DOMAIN_PAUSED: 'paused by user',
libvirt.VIR_DOMAIN_SHUTDOWN: 'being shut down',
- libvirt.VIR_DOMAIN_SHUTOFF: 'shut off',
- libvirt.VIR_DOMAIN_CRASHED: 'crashed',
+ libvirt.VIR_DOMAIN_SHUTOFF: 'shut off',
+ libvirt.VIR_DOMAIN_CRASHED: 'crashed',
}
connections = dict()
-# Helper methods
+# Common Libvirt code
-def getConnection(sliver_type):
- # TODO: error checking
- # vtype is of the form sliver.[LXC/QEMU] we need to lower case to lxc/qemu
- vtype = sliver_type.split('.')[1].lower()
- uri = vtype + '://'
- return connections.setdefault(uri, libvirt.open(uri))
+class Sliver_Libvirt(Account):
-def debuginfo(dom):
- ''' Helper method to get a "nice" output of the info struct for debug'''
- [state, maxmem, mem, ncpu, cputime] = dom.info()
- return '%s is %s, maxmem = %s, mem = %s, ncpu = %s, cputime = %s' % (dom.name(), STATES.get(state, state), maxmem, mem, ncpu, cputime)
+ # Helper methods
-# Common Libvirt code
+ @staticmethod
+ def getConnection(sliver_type):
+ # TODO: error checking
+ # vtype is of the form sliver.[LXC/QEMU] we need to lower case to lxc/qemu
+ vtype = sliver_type.split('.')[1].lower()
+ uri = vtype + '://'
+ return connections.setdefault(uri, libvirt.open(uri))
-class Sliver_Libvirt(accounts.Account):
+ @staticmethod
+ def debuginfo(dom):
+ ''' Helper method to get a "nice" output of the info struct for debug'''
+ [state, maxmem, mem, ncpu, cputime] = dom.info()
+ return '%s is %s, maxmem = %s, mem = %s, ncpu = %s, cputime = %s' % (dom.name(), STATES.get(state, state), maxmem, mem, ncpu, cputime)
def __init__(self, rec):
self.name = rec['name']
logger.verbose ('sliver_libvirt: %s init'%(self.name))
-
+
# Assume the directory with the image and config files
# are in place
-
+
self.keys = ''
self.rspec = {}
self.slice_id = rec['slice_id']
self.enabled = True
- self.conn = getConnection(rec['type'])
+ self.conn = Sliver_Libvirt.getConnection(rec['type'])
self.xid = bwlimit.get_xid(self.name)
-
+
+ dom = None
try:
- self.dom = self.conn.lookupByName(self.name)
+ dom = self.conn.lookupByName(self.name)
except:
- logger.verbose('sliver_libvirt: Domain %s does not exist UNEXPECTED: %s'%(self.name, sys.exc_info()[0]))
-
+ logger.log('sliver_libvirt: Domain %s does not exist. ' \
+ 'Will try to create it again.' % (self.name))
+ self.__class__.create(rec['name'], rec)
+ dom = self.conn.lookupByName(self.name)
+ self.dom = dom
def start(self, delay=0):
''' Just start the sliver '''
# interface to the actual device so the filter canmatch against the mark
bwlimit.ebtables("-A INPUT -i veth%d -j mark --set-mark %d" % \
(self.xid, self.xid))
-
def stop(self):
logger.verbose('sliver_libvirt: %s stop'%(self.name))
-
+
# Remove the ebtables rule before stopping
bwlimit.ebtables("-D INPUT -i veth%d -j mark --set-mark %d" % \
(self.xid, self.xid))
-
+
try:
self.dom.destroy()
except:
- logger.verbose('sliver_libvirt: Domain %s not running UNEXPECTED: %s'%(self.name, sys.exc_info()[0]))
- print 'sliver_libvirt: Domain %s not running UNEXPECTED: %s'%(self.name, sys.exc_info()[0])
-
+ logger.verbose('sliver_libvirt: Domain %s not running ' \
+ 'UNEXPECTED: %s'%(self.name, sys.exc_info()[1]))
+ print 'sliver_libvirt: Domain %s not running ' \
+ 'UNEXPECTED: %s'%(self.name, sys.exc_info()[1])
+
def is_running(self):
''' Return True if the domain is running '''
logger.verbose('sliver_libvirt: %s is_running'%self.name)
return True
else:
info = debuginfo(self.dom)
- logger.verbose('sliver_libvirt: %s is NOT RUNNING...\n%s'%(self.name, info))
+ logger.verbose('sliver_libvirt: %s is ' \
+ 'NOT RUNNING...\n%s'%(self.name, info))
return False
except:
- logger.verbose('sliver_libvirt: UNEXPECTED ERROR in %s...\n%s'%(self.name, sys.exc_info[0]))
- print 'sliver_libvirt: UNEXPECTED ERROR in %s...\n%s'%(self.name, sys.exc_info[0])
+ logger.verbose('sliver_libvirt: UNEXPECTED ERROR in ' \
+ '%s: %s'%(self.name, sys.exc_info()[1]))
+ print 'sliver_libvirt: UNEXPECTED ERROR in ' \
+ '%s: %s'%(self.name, sys.exc_info()[1])
+ return False
def configure(self, rec):
# CPU allocation
# Only cpu_shares until figure out how to provide limits and guarantees
# (RT_SCHED?)
- if rec.has_key('cpu_share'):
+ if rec.has_key('cpu_share'):
cpu_share = rec['cpu_share']
cgroups.write(self.name, 'cpu.shares', cpu_share)
# Call the upper configure method (ssh keys...)
- accounts.Account.configure(self, rec)
-
-
-
+ Account.configure(self, rec)
+
+ # A placeholder until we get true VirtualInterface objects
+ @staticmethod
+ def get_interfaces_xml(rec):
+ xml = """
+ <interface type='network'>
+ <source network='default'/>
+ </interface>
+"""
+ try:
+ tags = rec['rspec']['tags']
+ if 'interface' in tags:
+ interface = eval(tags['interface'])
+ if 'bridge' in interface:
+ xml = """
+ <interface type='bridge'>
+ <source bridge='%s'/>
+ <virtualport type='openvswitch'/>
+ </interface>
+""" % interface['bridge']
+ logger.log('sliver_libvirty.py: interface XML is: %s' % xml)
+ except:
+ logger.log('sliver_libvirt.py: ERROR parsing "interface" tag for slice %s' % rec['name'])
+ logger.log('sliver_libvirt.py: tag value: %s' % tags['interface'])
+ return xml
git://git.onelab.eu / nodemanager.git / blobdiff