X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-web.git/blobdiff_plain/2d150399f4590fc1053fb667c2ce21d6b9e17833..e0e7814e58df1dc0342e3f88e7bcfad4ed483079:/templates/main.py?ds=sidebyside diff --git a/templates/main.py b/templates/main.py index 2c6430d..b528b3e 100755 --- a/templates/main.py +++ b/templates/main.py @@ -11,6 +11,7 @@ import cPickle import base64 import sha import hmac +import datetime print 'Content-Type: text/html\n' sys.stderr = sys.stdout @@ -23,6 +24,14 @@ import random class MyException(Exception): pass +def helppopup(subj): + return '(?)' + + +global_dict = {} +global_dict['helppopup'] = helppopup + + # ... and stolen from xend/uuid.py def randomUUID(): """Generate a random UUID.""" @@ -33,18 +42,20 @@ def uuidToString(u): return "-".join(["%02x" * 4, "%02x" * 2, "%02x" * 2, "%02x" * 2, "%02x" * 6]) % tuple(u) -def maxMemory(user): +def maxMemory(user, machine=None): return 256 -def maxDisk(user): +def maxDisk(user, machine=None): return 10.0 def haveAccess(user, machine): - return True + if user.username == 'moo': + return True + return machine.owner == user.username def error(op, user, fields, err): d = dict(op=op, user=user, errorMessage=str(err)) - print Template(file='error.tmpl', searchList=d); + print Template(file='error.tmpl', searchList=[d, global_dict]); def validMachineName(name): """Check that name is valid for a machine name""" @@ -58,10 +69,11 @@ def validMachineName(name): def kinit(username = 'tabbott/extra', keytab = '/etc/tabbott.keytab'): """Kinit with a given username and keytab""" - p = subprocess.Popen(['kinit', "-k", "-t", keytab, username]) + p = subprocess.Popen(['kinit', "-k", "-t", keytab, username], + stderr=subprocess.PIPE) e = p.wait() if e: - raise MyException("Error %s in kinit" % e) + raise MyException("Error %s in kinit: %s" % (e, p.stderr.read())) def checkKinit(): """If we lack tickets, kinit.""" @@ -106,6 +118,10 @@ def registerMachine(machine): """Register a machine to be controlled by the web interface""" remctl('web', 'register', machine.name) +def unregisterMachine(machine): + """Unregister a machine to not be controlled by the web interface""" + remctl('web', 'unregister', machine.name) + def parseStatus(s): """Parse a status string into nested tuples of strings. @@ -120,6 +136,8 @@ def parseStatus(s): if v == '(': stack.append([]) elif v == ')': + if len(stack[-1]) == 1: + stack[-1].append('') stack[-2].append(stack[-1]) stack.pop() else: @@ -128,7 +146,23 @@ def parseStatus(s): stack[-1].extend(v.split()) return stack[-1] +def getUptimes(machines): + """Return a dictionary mapping machine names to uptime strings""" + value_string = remctl('web', 'listvms') + lines = value_string.splitlines() + d = {} + for line in lines[1:]: + lst = line.split() + name, id = lst[:2] + uptime = ' '.join(lst[2:]) + d[name] = uptime + return d + def statusInfo(machine): + """Return the status list for a given machine. + + Gets and parses xm list --long + """ value_string, err_string = remctl('list-long', machine.name, err=True) if 'Unknown command' in err_string: raise MyException("ERROR in remctl list-long %s is not registered" % (machine.name,)) @@ -140,6 +174,7 @@ def statusInfo(machine): return status def hasVnc(status): + """Does the machine with a given status list support VNC?""" if status is None: return False for l in status: @@ -149,6 +184,7 @@ def hasVnc(status): return False def createVm(user, name, memory, disk, is_hvm, cdrom): + """Create a VM and put it in the database""" # put stuff in the table transaction = ctx.current.create_transaction() try: @@ -186,36 +222,44 @@ def createVm(user, name, memory, disk, is_hvm, cdrom): return machine -def create(user, fields): - name = fields.getfirst('name') - if not validMachineName(name): - raise MyException("Invalid name '%s'" % name) - name = name.lower() - - if Machine.get_by(name=name): - raise MyException("A machine named '%s' already exists" % name) - - memory = fields.getfirst('memory') +def validMemory(user, memory, machine=None): try: memory = int(memory) if memory <= 0: raise ValueError except ValueError: raise MyException("Invalid memory amount") - if memory > maxMemory(user): + if memory > maxMemory(user, machine): raise MyException("Too much memory requested") - - disk = fields.getfirst('disk') + return memory + +def validDisk(user, disk, machine=None): try: disk = float(disk) + if disk > maxDisk(user, machine): + raise MyException("Too much disk requested") disk = int(disk * 1024) if disk <= 0: raise ValueError except ValueError: raise MyException("Invalid disk amount") - if disk > maxDisk(user): - raise MyException("Too much disk requested") + return disk + +def create(user, fields): + name = fields.getfirst('name') + if not validMachineName(name): + raise MyException("Invalid name '%s'" % name) + name = user.username + '_' + name.lower() + + if Machine.get_by(name=name): + raise MyException("A machine named '%s' already exists" % name) + + memory = fields.getfirst('memory') + memory = validMemory(user, memory) + disk = fields.getfirst('disk') + disk = validDisk(user, disk) + vm_type = fields.getfirst('vmtype') if vm_type not in ('hvm', 'paravm'): raise MyException("Invalid vm type '%s'" % vm_type) @@ -231,23 +275,33 @@ def create(user, fields): d = dict(user=user, machine=machine) print Template(file='create.tmpl', - searchList=d); + searchList=[d, global_dict]); def listVms(user, fields): - machines = Machine.select() - status = statusInfo(machines) + machines = [m for m in Machine.select() if haveAccess(user, m)] + on = {} has_vnc = {} + uptimes = getUptimes(machines) + on = uptimes for m in machines: - on[m.name] = status[m.name] is not None - has_vnc[m.name] = hasVnc(status[m.name]) + if not on.get(m.name): + has_vnc[m.name] = 'Off' + elif m.type.hvm: + has_vnc[m.name] = True + else: + has_vnc[m.name] = "ParaVM"+helppopup("paravm_console") + # for m in machines: + # status = statusInfo(m) + # on[m.name] = status is not None + # has_vnc[m.name] = hasVnc(status) d = dict(user=user, maxmem=maxMemory(user), maxdisk=maxDisk(user), machines=machines, - status=status, has_vnc=has_vnc, + uptimes=uptimes, cdroms=CDROM.select()) - print Template(file='list.tmpl', searchList=d) + print Template(file='list.tmpl', searchList=[d, global_dict]) def testMachineId(user, machineId, exists=True): if machineId is None: @@ -283,8 +337,8 @@ def vnc(user, fields): TOKEN_KEY = "0M6W0U1IXexThi5idy8mnkqPKEq1LtEnlK/pZSn0cDrN" data = {} - data["user"] = user - data["machine"]=machine + data["user"] = user.username + data["machine"]=machine.name data["expires"]=time.time()+(5*60) pickledData = cPickle.dumps(data) m = hmac.new(TOKEN_KEY, digestmod=sha) @@ -298,27 +352,195 @@ def vnc(user, fields): hostname=os.environ.get('SERVER_NAME', 'localhost'), authtoken=token) print Template(file='vnc.tmpl', - searchList=d) + searchList=[d, global_dict]) + +def getNicInfo(data_dict, machine): + data_dict['num_nics'] = len(machine.nics) + nic_fields_template = [('nic%s_hostname', 'NIC %s hostname'), + ('nic%s_mac', 'NIC %s MAC Addr'), + ('nic%s_ip', 'NIC %s IP'), + ] + nic_fields = [] + for i in range(len(machine.nics)): + nic_fields.extend([(x % i, y % i) for x, y in nic_fields_template]) + data_dict['nic%s_hostname' % i] = machine.nics[i].hostname + '.servers.csail.mit.edu' + data_dict['nic%s_mac' % i] = machine.nics[i].mac_addr + data_dict['nic%s_ip' % i] = machine.nics[i].ip + if len(machine.nics) == 1: + nic_fields = [(x, y.replace('NIC 0 ', '')) for x, y in nic_fields] + return nic_fields + +def getDiskInfo(data_dict, machine): + data_dict['num_disks'] = len(machine.disks) + disk_fields_template = [('%s_size', '%s size')] + disk_fields = [] + for disk in machine.disks: + name = disk.guest_device_name + disk_fields.extend([(x % name, y % name) for x, y in disk_fields_template]) + data_dict['%s_size' % name] = "%0.1f GB" % (disk.size / 1024.) + return disk_fields + +def deleteVM(machine): + transaction = ctx.current.create_transaction() + delete_disk_pairs = [(machine.name, d.guest_device_name) for d in machine.disks] + try: + for nic in machine.nics: + nic.machine_id = None + nic.hostname = None + ctx.current.save(nic) + for disk in machine.disks: + ctx.current.delete(disk) + ctx.current.delete(machine) + transaction.commit() + except: + transaction.rollback() + raise + for mname, dname in delete_disk_pairs: + remctl('web', 'lvremove', mname, dname) + unregisterMachine(machine) -def info(user, fields): +def command(user, fields): + print time.time()-start_time machine = testMachineId(user, fields.getfirst('machine_id')) + action = fields.getfirst('action') + cdrom = fields.getfirst('cdrom') + print time.time()-start_time + if cdrom is not None and not CDROM.get(cdrom): + raise MyException("Invalid cdrom type '%s'" % cdrom) + if action not in ('Reboot', 'Power on', 'Power off', 'Shutdown', 'Delete VM'): + raise MyException("Invalid action '%s'" % action) + if action == 'Reboot': + if cdrom is not None: + remctl('reboot', machine.name, cdrom) + else: + remctl('reboot', machine.name) + elif action == 'Power on': + bootMachine(machine, cdrom) + elif action == 'Power off': + remctl('destroy', machine.name) + elif action == 'Shutdown': + remctl('shutdown', machine.name) + elif action == 'Delete VM': + deleteVM(machine) + print time.time()-start_time + d = dict(user=user, + command=action, machine=machine) + print Template(file="command.tmpl", searchList=[d, global_dict]) + +def modify(user, fields): + machine = testMachineId(user, fields.getfirst('machine_id')) + +def help(user, fields): + simple = fields.getfirst('simple') + subjects = fields.getlist('subject') + + mapping = dict(paravm_console=""" +ParaVM machines do not support console access over VNC. To access +these machines, you either need to boot with a liveCD and ssh in or +hope that the sipb-xen maintainers add support for serial consoles.""", + hvm_paravm=""" +HVM machines use the virtualization features of the processor, while +ParaVM machines use Xen's emulation of virtualization features. You +want an HVM virtualized machine.""", + cpu_weight="""Don't ask us! We're as mystified as you are.""") + + d = dict(user=user, + simple=simple, + subjects=subjects, + mapping=mapping) + + print Template(file="help.tmpl", searchList=[d, global_dict]) + + +def info(user, fields): + machine = testMachineId(user, fields.getfirst('machine_id')) + status = statusInfo(machine) + has_vnc = hasVnc(status) + if status is None: + main_status = dict(name=machine.name, + memory=str(machine.memory)) + else: + main_status = dict(status[1:]) + start_time = float(main_status.get('start_time', 0)) + uptime = datetime.timedelta(seconds=int(time.time()-start_time)) + cpu_time_float = float(main_status.get('cpu_time', 0)) + cputime = datetime.timedelta(seconds=int(cpu_time_float)) + display_fields = """name uptime memory state cpu_weight on_reboot + on_poweroff on_crash on_xend_start on_xend_stop bootloader""".split() + display_fields = [('name', 'Name'), + ('owner', 'Owner'), + ('contact', 'Contact'), + ('type', 'Type'), + 'NIC_INFO', + ('uptime', 'uptime'), + ('cputime', 'CPU usage'), + ('memory', 'RAM'), + 'DISK_INFO', + ('state', 'state (xen format)'), + ('cpu_weight', 'CPU weight'+helppopup('cpu_weight')), + ('on_reboot', 'Action on VM reboot'), + ('on_poweroff', 'Action on VM poweroff'), + ('on_crash', 'Action on VM crash'), + ('on_xend_start', 'Action on Xen start'), + ('on_xend_stop', 'Action on Xen stop'), + ('bootloader', 'Bootloader options'), + ] + fields = [] + machine_info = {} + machine_info['type'] = machine.type.hvm and 'HVM' or 'ParaVM' + machine_info['owner'] = machine.owner + machine_info['contact'] = machine.contact + + nic_fields = getNicInfo(machine_info, machine) + nic_point = display_fields.index('NIC_INFO') + display_fields = display_fields[:nic_point] + nic_fields + display_fields[nic_point+1:] + + disk_fields = getDiskInfo(machine_info, machine) + disk_point = display_fields.index('DISK_INFO') + display_fields = display_fields[:disk_point] + disk_fields + display_fields[disk_point+1:] + + main_status['memory'] += ' MB' + for field, disp in display_fields: + if field in ('uptime', 'cputime'): + fields.append((disp, locals()[field])) + elif field in main_status: + fields.append((disp, main_status[field])) + elif field in machine_info: + fields.append((disp, machine_info[field])) + else: + pass + #fields.append((disp, None)) + + d = dict(user=user, + cdroms=CDROM.select(), + on=status is not None, + machine=machine, + has_vnc=has_vnc, + uptime=str(uptime), + ram=machine.memory, + maxmem=maxMemory(user, machine), + maxdisk=maxDisk(user, machine), + fields = fields) print Template(file='info.tmpl', - searchList=d) + searchList=[d, global_dict]) mapping = dict(list=listVms, vnc=vnc, + command=command, + modify=modify, info=info, - create=create) + create=create, + help=help) if __name__ == '__main__': + start_time = time.time() fields = cgi.FieldStorage() - class C: + class User: username = "moo" email = 'moo@cow.com' - u = C() - connect('postgres://sipb-xen@sipb-xen-dev/sipb_xen') + u = User() operation = os.environ.get('PATH_INFO', '') if not operation: pass @@ -332,7 +554,9 @@ if __name__ == '__main__': fun = mapping.get(operation, lambda u, e: error(operation, u, e, - "Invalid operation '%'" % operation)) + "Invalid operation '%s'" % operation)) + if fun not in (help, ): + connect('postgres://sipb-xen@sipb-xen-dev/sipb_xen') try: fun(u, fields) except MyException, err: