X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-web.git/blobdiff_plain/9f1b11fe7e9983a386990be531879cb5727457b5..79537c1e720c144825008c3f50f7f34209f17a52:/code/controls.py diff --git a/code/controls.py b/code/controls.py index 9c43a41..4cd0e9c 100644 --- a/code/controls.py +++ b/code/controls.py @@ -1,18 +1,16 @@ -""" -Functions to perform remctls. -""" - -from sipb_xen_database import Machine, Disk, Type, NIC, CDROM, ctx, meta import validation -from webcommon import CodeError, InvalidInput +from invirt.common import CodeError, InvalidInput import random -import subprocess import sys import time import re import cache_acls import yaml +from invirt.config import structs as config +from invirt.database import Machine, Disk, Type, NIC, CDROM, session, meta +from invirt.remctl import remctl as gen_remctl + # ... and stolen from xend/uuid.py def randomUUID(): """Generate a random UUID.""" @@ -25,39 +23,10 @@ def uuidToString(u): "%02x" * 6]) % tuple(u) # end stolen code -def kinit(username = 'daemon/sipb-xen.mit.edu', keytab = '/etc/sipb-xen.keytab'): - """Kinit with a given username and keytab""" - - p = subprocess.Popen(['kinit', "-k", "-t", keytab, username], - stderr=subprocess.PIPE) - e = p.wait() - if e: - raise CodeError("Error %s in kinit: %s" % (e, p.stderr.read())) - -def checkKinit(): - """If we lack tickets, kinit.""" - p = subprocess.Popen(['klist', '-s']) - if p.wait(): - kinit() - -def remctl(*args, **kws): - """Perform a remctl and return the output. - - kinits if necessary, and outputs errors to stderr. - """ - checkKinit() - p = subprocess.Popen(['remctl', 'remote.mit.edu'] - + list(args), - stdout=subprocess.PIPE, - stderr=subprocess.PIPE) - v = p.wait() - if kws.get('err'): - return p.stdout.read(), p.stderr.read() - if v: - print >> sys.stderr, 'Error', v, 'on remctl', args, ':' - print >> sys.stderr, p.stderr.read() - raise CodeError('ERROR on remctl') - return p.stdout.read() +def remctl(*args, **kwargs): + return gen_remctl(config.remote.hostname, + principal='daemon/'+config.web.hostname, + *args, **kwargs) def lvcreate(machine, disk): """Create a single disk for a machine""" @@ -76,10 +45,14 @@ def getswap(disksize, memsize): def lvinstall(machine, autoinstall): disksize = machine.disks[0].size memsize = machine.memory - imagesize = disksize - getswap(disksize, memsize) + swapsize = getswap(disksize, memsize) + imagesize = disksize - swapsize ip = machine.nics[0].ip - remctl('web', 'install', machine.name, autoinstall.distribution, - autoinstall.mirror, str(imagesize), ip) + remctl('control', machine.name, 'install', + 'dist=%s' % autoinstall.distribution, + 'mirror=%s' % autoinstall.mirror, + 'arch=%s' % autoinstall.arch, + 'imagesize=%s' % imagesize) def lvcopy(machine_orig_name, machine, rootpw): """Copy a golden image onto a machine's disk""" @@ -97,7 +70,7 @@ def bootMachine(machine, cdtype): else: out, err = remctl('control', machine.name, 'create', err=True) - if 'already exists' in out: + if 'already running' in err: raise InvalidInput('action', 'create', 'VM %s is already on' % machine.name) elif err: @@ -107,45 +80,45 @@ def bootMachine(machine, cdtype): def createVm(username, state, owner, contact, name, description, memory, disksize, machine_type, cdrom, autoinstall): """Create a VM and put it in the database""" # put stuff in the table - transaction = ctx.current.create_transaction() + session.begin() try: validation.Validate(username, state, name=name, description=description, owner=owner, memory=memory, disksize=disksize/1024.) - res = meta.engine.execute('select nextval(' - '\'"machines_machine_id_seq"\')') - id = res.fetchone()[0] machine = Machine() - machine.machine_id = id machine.name = name machine.description = description machine.memory = memory machine.owner = owner - machine.administrator = owner + machine.administrator = None machine.contact = contact machine.uuid = uuidToString(randomUUID()) machine.boot_off_cd = True - machine.type_id = machine_type.type_id - ctx.current.save(machine) - disk = Disk(machine_id=machine.machine_id, + machine.type = machine_type + session.save_or_update(machine) + disk = Disk(machine=machine, guest_device_name='hda', size=disksize) - open_nics = NIC.select_by(machine_id=None) - if not open_nics: #No IPs left! + nic = NIC.query().filter_by(machine_id=None).first() + if not nic: #No IPs left! raise CodeError("No IP addresses left! " - "Contact xvm@mit.edu.") - nic = open_nics[0] - nic.machine_id = machine.machine_id + "Contact %s." % config.web.errormail) + nic.machine = machine nic.hostname = name - ctx.current.save(nic) - ctx.current.save(disk) + session.save_or_update(nic) + session.save_or_update(disk) cache_acls.refreshMachine(machine) - transaction.commit() + session.commit() except: - transaction.rollback() + session.rollback() raise makeDisks(machine) - if autoinstall: - lvinstall(machine, autoinstall) - # tell it to boot with cdrom - bootMachine(machine, cdrom) + try: + if autoinstall: + lvinstall(machine, autoinstall) + else: + # tell it to boot with cdrom + bootMachine(machine, cdrom) + except CodeError, e: + deleteVM(machine) + raise return machine def getList(): @@ -203,33 +176,40 @@ def listHost(machine): return None return out.strip() +def vnctoken(machine): + """Return a time-stamped VNC token""" + out, err = remctl('control', machine.name, 'vnctoken', err=True) + if err: + return None + return out.strip() + def deleteVM(machine): """Delete a VM.""" remctl('control', machine.name, 'destroy', err=True) - transaction = ctx.current.create_transaction() + session.begin() delete_disk_pairs = [(machine.name, d.guest_device_name) for d in machine.disks] try: + for mname, dname in delete_disk_pairs: + remctl('web', 'lvremove', mname, dname) for nic in machine.nics: nic.machine_id = None nic.hostname = None - ctx.current.save(nic) + session.save_or_update(nic) for disk in machine.disks: - ctx.current.delete(disk) - ctx.current.delete(machine) - transaction.commit() + session.delete(disk) + session.delete(machine) + session.commit() except: - transaction.rollback() + session.rollback() raise - for mname, dname in delete_disk_pairs: - remctl('web', 'lvremove', mname, dname) def commandResult(username, state, fields): start_time = 0 machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine action = fields.getfirst('action') cdrom = fields.getfirst('cdrom') - if cdrom is not None and not CDROM.get(cdrom): + if cdrom is not None and not CDROM.query().filter_by(cdrom_id=cdrom).one(): raise CodeError("Invalid cdrom type '%s'" % cdrom) if action not in ('Reboot', 'Power on', 'Power off', 'Shutdown', 'Delete VM'):