Under the covers, the autoinstaller uses our own patched version of +xen-create-image, which is a tool based on debootstrap. If you log +into the serial console while the install is running, you can watch +it. +""", + 'ParaVM Console': """ +ParaVM machines do not support local console access over VNC. To +access the serial console of these machines, you can SSH with Kerberos +to %s, using the name of the machine as your +username.""" % config.console.hostname, + 'HVM/ParaVM': """ +HVM machines use the virtualization features of the processor, while +ParaVM machines rely on a modified kernel to communicate directly with +the hypervisor. HVMs support boot CDs of any operating system, and +the VNC console applet. The three-minute autoinstaller produces +ParaVMs. ParaVMs typically are more efficient, and always support the +console server.
- def __str__(self): - return ('Timing info:\n%s\n' % - '\n'.join(['%s: %s' % (d, t - self.start_time) for - (d, t) in self.checkpoints])) +More details are on the +wiki, including steps to prepare an HVM guest to boot as a ParaVM +(which you can skip by using the autoinstaller to begin with.)
-checkpoint = Checkpoint() +We recommend using a ParaVM when possible and an HVM when necessary.
+""",
+ 'Owner': """
+The owner field is used to determine quotas. It must be the name of a
+locker that you are an AFS administrator of. In particular, you or an
+AFS group you are a member of must have AFS rlidwka bits on the
+locker. You can check who administers the LOCKER locker using the
+commands 'attach LOCKER; fs la /mit/LOCKER' on Athena.) See also administrator.""",
+ 'Administrator': """
+The administrator field determines who can access the console and
+power on and off the machine. This can be either a user or a moira
+group.""",
+ 'Quotas': """
+Quotas are determined on a per-locker basis. Each locker may have a
+maximum of 512 mebibytes of active ram, 50 gibibytes of disk, and 4
+active machines.""",
+ 'Console': """
+Framebuffer: At a Linux boot prompt in your VM, try
+setting fb=false to disable the framebuffer. If you don't,
+your machine will run just fine, but the applet's display of the
+console will suffer artifacts.
+""",
+ 'Windows': """
+Windows 7: The Windows 7 image is licensed for all MIT students and will automatically activate off the network; see the licensing agreement for details. The installer requires 512 MiB RAM and at least 15 GiB disk space (20 GiB or more recommended).
+Windows Vista: The Vista image is licensed for all MIT students and will automatically activate off the network; see the licensing confirmation e-mail for details. The installer requires 512 MiB RAM and at least 7.5 GiB disk space (15 GiB or more recommended).
+Windows XP: This is the volume license CD image. You will need your own volume license key to complete the install. We do not have these available for the general MIT community; ask your department if they have one, or visit http://msca.mit.edu/ if you are staff/faculty to request one.
+"""
+ }
+
+ if not subject:
+ subject = sorted(help_mapping.keys())
+ if not isinstance(subject, list):
+ subject = [subject]
+
+ return dict(simple=simple,
+ subjects=subject,
+ mapping=help_mapping)
+ help._cp_config['tools.require_login.on'] = False
+
+ def parseCreate(self, fields):
+ kws = dict([(kw, fields[kw]) for kw in
+ 'name description owner memory disksize vmtype cdrom autoinstall'.split()
+ if fields[kw]])
+ validate = validation.Validate(cherrypy.request.login,
+ cherrypy.request.state,
+ strict=True, **kws)
+ return dict(contact=cherrypy.request.login, name=validate.name,
+ description=validate.description, memory=validate.memory,
+ disksize=validate.disksize, owner=validate.owner,
+ machine_type=getattr(validate, 'vmtype', Defaults.type),
+ cdrom=getattr(validate, 'cdrom', None),
+ autoinstall=getattr(validate, 'autoinstall', None))
-def makeErrorPre(old, addition):
- if addition is None:
- return
- if old:
- return old[:-6] + '\n----\n' + str(addition) + ''
- else:
- return '
STDERR:
' + str(addition) + '' + @cherrypy.expose + @cherrypy.tools.mako(filename="/list.mako") + @cherrypy.tools.require_POST() + def create(self, **fields): + """Handler for create requests.""" + try: + parsed_fields = self.parseCreate(fields) + machine = controls.createVm(cherrypy.request.login, + cherrypy.request.state, **parsed_fields) + except InvalidInput, err: + pass + else: + err = None + cherrypy.request.state.clear() #Changed global state + d = getListDict(cherrypy.request.login, cherrypy.request.state) + d['err'] = err + if err: + for field, value in fields.items(): + setattr(d['defaults'], field, value) + else: + d['new_machine'] = parsed_fields['name'] + return d -Template.database = database -Template.config = config -Template.err = None + @cherrypy.expose + @cherrypy.tools.mako(filename="/helloworld.mako") + def helloworld(self, **kwargs): + return {'request': cherrypy.request, 'kwargs': kwargs} + helloworld._cp_config['tools.require_login.on'] = False -class JsonDict: - """Class to store a dictionary that will be converted to JSON""" - def __init__(self, **kws): - self.data = kws - if 'err' in kws: - err = kws['err'] - del kws['err'] - self.addError(err) + @cherrypy.expose + def errortest(self): + """Throw an error, to test the error-tracing mechanisms.""" + print >>sys.stderr, "look ma, it's a stderr" + raise RuntimeError("test of the emergency broadcast system") + + class MachineView(View): + def __getattr__(self, name): + """Synthesize attributes to allow RESTful URLs like + /machine/13/info. This is hairy. CherryPy 3.2 adds a + method called _cp_dispatch that allows you to explicitly + handle URLs that can't be mapped, and it allows you to + rewrite the path components and continue processing. + + This function gets the next path component being resolved + as a string. _cp_dispatch will get an array of strings + representing any subsequent path components as well.""" + + try: + cherrypy.request.params['machine_id'] = int(name) + return self + except ValueError: + return None + + @cherrypy.expose + @cherrypy.tools.mako(filename="/info.mako") + def info(self, machine_id): + """Handler for info on a single VM.""" + machine = validation.Validate(cherrypy.request.login, + cherrypy.request.state, + machine_id=machine_id).machine + d = infoDict(cherrypy.request.login, cherrypy.request.state, machine) + return d + index = list + + @cherrypy.expose + @cherrypy.tools.mako(filename="/info.mako") + @cherrypy.tools.require_POST() + def modify(self, machine_id, **fields): + """Handler for modifying attributes of a machine.""" + try: + modify_dict = modifyDict(cherrypy.request.login, + cherrypy.request.state, + machine_id, fields) + except InvalidInput, err: + result = None + machine = validation.Validate(cherrypy.request.login, + cherrypy.request.state, + machine_id=machine_id).machine + else: + machine = modify_dict['machine'] + result = 'Success!' + err = None + info_dict = infoDict(cherrypy.request.login, + cherrypy.request.state, machine) + info_dict['err'] = err + if err: + for field, value in fields.items(): + setattr(info_dict['defaults'], field, value) + info_dict['result'] = result + return info_dict + + @cherrypy.expose + @cherrypy.tools.mako(filename="/vnc.mako") + def vnc(self, machine_id): + """VNC applet page. + + Note that due to same-domain restrictions, the applet connects to + the webserver, which needs to forward those requests to the xen + server. The Xen server runs another proxy that (1) authenticates + and (2) finds the correct port for the VM. + + You might want iptables like: + + -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp \ + --dport 10003 -j DNAT --to-destination 18.181.0.60:10003 + -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp \ + --dport 10003 -j SNAT --to-source 18.187.7.142 + -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp \ + --dport 10003 -j ACCEPT + + Remember to enable iptables! + echo 1 > /proc/sys/net/ipv4/ip_forward + """ + machine = validation.Validate(cherrypy.request.login, + cherrypy.request.state, + machine_id=machine_id).machine + token = controls.vnctoken(machine) + host = controls.listHost(machine) + if host: + port = 10003 + [h.hostname for h in config.hosts].index(host) + else: + port = 5900 # dummy + + status = controls.statusInfo(machine) + has_vnc = hasVnc(status) + + d = dict(on=status, + has_vnc=has_vnc, + machine=machine, + hostname=cherrypy.request.local.name, + port=port, + authtoken=token) + return d + + @cherrypy.expose + @cherrypy.tools.mako(filename="/command.mako") + @cherrypy.tools.require_POST() + def command(self, command_name, machine_id, **kwargs): + """Handler for running commands like boot and delete on a VM.""" + back = kwargs.get('back') + if command_name == 'delete': + back = 'list' + try: + d = controls.commandResult(cherrypy.request.login, + cherrypy.request.state, + command_name, machine_id, kwargs) + except InvalidInput, err: + if not back: + raise + print >> sys.stderr, err + result = str(err) + else: + result = 'Success!' + if not back: + return d + if back == 'list': + cherrypy.request.state.clear() #Changed global state + raise cherrypy.InternalRedirect('/list?result=%s' + % urllib.quote(result)) + elif back == 'info': + raise cherrypy.HTTPRedirect(cherrypy.request.base + + '/machine/%d/' % machine_id, + status=303) + else: + raise InvalidInput('back', back, 'Not a known back page.') - def __str__(self): - return simplejson.dumps(self.data) + machine = MachineView() - def addError(self, text): - """Add stderr text to be displayed on the website.""" - self.data['err'] = \ - makeErrorPre(self.data.get('err'), text) class Defaults: """Class to store default values for fields.""" @@ -132,6 +401,7 @@ class Defaults: autoinstall = '' name = '' description = '' + administrator = '' type = 'linux-hvm' def __init__(self, max_memory=None, max_disk=None, **kws): @@ -142,17 +412,6 @@ class Defaults: for key in kws: setattr(self, key, kws[key]) - - -DEFAULT_HEADERS = {'Content-Type': 'text/html'} - -def invalidInput(op, username, fields, err, emsg): - """Print an error page when an InvalidInput exception occurs""" - d = dict(op=op, user=username, err_field=err.err_field, - err_value=str(err.err_value), stderr=emsg, - errorMessage=str(err)) - return templates.invalid(searchList=[d]) - def hasVnc(status): """Does the machine with a given status list support VNC?""" if status is None: @@ -163,63 +422,32 @@ def hasVnc(status): return 'location' in d return False -def parseCreate(username, state, fields): - kws = dict([(kw, fields.getfirst(kw)) for kw in 'name description owner memory disksize vmtype cdrom autoinstall'.split()]) - validate = validation.Validate(username, state, strict=True, **kws) - return dict(contact=username, name=validate.name, description=validate.description, memory=validate.memory, - disksize=validate.disksize, owner=validate.owner, machine_type=getattr(validate, 'vmtype', Defaults.type), - cdrom=getattr(validate, 'cdrom', None), - autoinstall=getattr(validate, 'autoinstall', None)) - -def create(username, state, path, fields): - """Handler for create requests.""" - try: - parsed_fields = parseCreate(username, state, fields) - machine = controls.createVm(username, state, **parsed_fields) - except InvalidInput, err: - pass - else: - err = None - state.clear() #Changed global state - d = getListDict(username, state) - d['err'] = err - if err: - for field in fields.keys(): - setattr(d['defaults'], field, fields.getfirst(field)) - else: - d['new_machine'] = parsed_fields['name'] - return templates.list(searchList=[d]) - def getListDict(username, state): """Gets the list of local variables used by list.tmpl.""" - checkpoint.checkpoint('Starting') machines = state.machines - checkpoint.checkpoint('Got my machines') on = {} has_vnc = {} + installing = {} xmlist = state.xmlist - checkpoint.checkpoint('Got uptimes') - can_clone = 'ice3' not in state.xmlist_raw for m in machines: if m not in xmlist: has_vnc[m] = 'Off' m.uptime = None else: m.uptime = xmlist[m]['uptime'] + installing[m] = bool(xmlist[m].get('autoinstall')) if xmlist[m]['console']: has_vnc[m] = True elif m.type.hvm: has_vnc[m] = "WTF?" else: - has_vnc[m] = "ParaVM"+helppopup("ParaVM Console") + has_vnc[m] = "ParaVM" max_memory = validation.maxMemory(username, state) max_disk = validation.maxDisk(username) - checkpoint.checkpoint('Got max mem/disk') defaults = Defaults(max_memory=max_memory, max_disk=max_disk, owner=username) - checkpoint.checkpoint('Got defaults') def sortkey(machine): return (machine.owner != username, machine.owner, machine.name) machines = sorted(machines, key=sortkey) @@ -230,50 +458,10 @@ def getListDict(username, state): defaults=defaults, machines=machines, has_vnc=has_vnc, - can_clone=can_clone) + installing=installing, + disable_creation=False) return d -def vnc(username, state, path, fields): - """VNC applet page. - - Note that due to same-domain restrictions, the applet connects to - the webserver, which needs to forward those requests to the xen - server. The Xen server runs another proxy that (1) authenticates - and (2) finds the correct port for the VM. - - You might want iptables like: - - -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp \ - --dport 10003 -j DNAT --to-destination 18.181.0.60:10003 - -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp \ - --dport 10003 -j SNAT --to-source 18.187.7.142 - -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp \ - --dport 10003 -j ACCEPT - - Remember to enable iptables! - echo 1 > /proc/sys/net/ipv4/ip_forward - """ - machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine - - token = controls.vnctoken(machine) - host = controls.listHost(machine) - if host: - port = 10003 + [h.hostname for h in config.hosts].index(host) - else: - port = 5900 # dummy - - status = controls.statusInfo(machine) - has_vnc = hasVnc(status) - - d = dict(user=username, - on=status, - has_vnc=has_vnc, - machine=machine, - hostname=state.environ.get('SERVER_NAME', 'localhost'), - port=port, - authtoken=token) - return templates.vnc(searchList=[d]) - def getHostname(nic): """Find the hostname associated with a NIC. @@ -327,44 +515,18 @@ def getDiskInfo(data_dict, machine): data_dict['%s_size' % name] = "%0.1f GiB" % (disk.size / 1024.) return disk_fields -def command(username, state, path, fields): - """Handler for running commands like boot and delete on a VM.""" - back = fields.getfirst('back') - try: - d = controls.commandResult(username, state, fields) - if d['command'] == 'Delete VM': - back = 'list' - except InvalidInput, err: - if not back: - raise - print >> sys.stderr, err - result = err - else: - result = 'Success!' - if not back: - return templates.command(searchList=[d]) - if back == 'list': - state.clear() #Changed global state - d = getListDict(username, state) - d['result'] = result - return templates.list(searchList=[d]) - elif back == 'info': - machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine - return ({'Status': '303 See Other', - 'Location': 'info?machine_id=%d' % machine.machine_id}, - "You shouldn't see this message.") - else: - raise InvalidInput('back', back, 'Not a known back page.') - -def modifyDict(username, state, fields): +def modifyDict(username, state, machine_id, fields): """Modify a machine as specified by CGI arguments. - Return a list of local variables for modify.tmpl. + Return a dict containing the machine that was modified. """ olddisk = {} session.begin() try: - kws = dict([(kw, fields.getfirst(kw)) for kw in 'machine_id owner admin contact name description memory vmtype disksize'.split()]) + kws = dict((kw, fields[kw]) for kw in + 'owner admin contact name description memory vmtype disksize'.split() + if fields.get(kw)) + kws['machine_id'] = machine_id validate = validation.Validate(username, state, **kws) machine = validate.machine oldname = machine.name @@ -375,23 +537,10 @@ def modifyDict(username, state, fields): if hasattr(validate, 'vmtype'): machine.type = validate.vmtype - if hasattr(validate, 'disksize'): - disksize = validate.disksize - disk = machine.disks[0] - if disk.size != disksize: - olddisk[disk.guest_device_name] = disksize - disk.size = disksize - session.save_or_update(disk) - update_acl = False if hasattr(validate, 'owner') and validate.owner != machine.owner: machine.owner = validate.owner update_acl = True - if hasattr(validate, 'name'): - machine.name = validate.name - for n in machine.nics: - if n.hostname == oldname: - n.hostname = validate.name if hasattr(validate, 'description'): machine.description = validate.description if hasattr(validate, 'admin') and validate.admin != machine.administrator: @@ -401,127 +550,51 @@ def modifyDict(username, state, fields): machine.contact = validate.contact session.save_or_update(machine) - if update_acl: - cache_acls.refreshMachine(machine) session.commit() except: session.rollback() raise - for diskname in olddisk: - controls.resizeDisk(oldname, diskname, str(olddisk[diskname])) - if hasattr(validate, 'name'): - controls.renameMachine(machine, oldname, validate.name) - return dict(user=username, - command="modify", - machine=machine) - -def modify(username, state, path, fields): - """Handler for modifying attributes of a machine.""" - try: - modify_dict = modifyDict(username, state, fields) - except InvalidInput, err: - result = None - machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine - else: - machine = modify_dict['machine'] - result = 'Success!' - err = None - info_dict = infoDict(username, state, machine) - info_dict['err'] = err - if err: - for field in fields.keys(): - setattr(info_dict['defaults'], field, fields.getfirst(field)) - info_dict['result'] = result - return templates.info(searchList=[info_dict]) - - -def helpHandler(username, state, path, fields): - """Handler for help messages.""" - simple = fields.getfirst('simple') - subjects = fields.getlist('subject') - - help_mapping = { - 'Autoinstalls': """ -The autoinstaller builds a minimal Debian or Ubuntu system to run as a -ParaVM. You can access the resulting system by logging into the serial console server -with your Kerberos tickets; there is no root password so sshd will -refuse login. - -
Under the covers, the autoinstaller uses our own patched version of -xen-create-image, which is a tool based on debootstrap. If you log -into the serial console while the install is running, you can watch -it. -""", - 'ParaVM Console': """ -ParaVM machines do not support local console access over VNC. To -access the serial console of these machines, you can SSH with Kerberos -to %s, using the name of the machine as your -username.""" % config.console.hostname, - 'HVM/ParaVM': """ -HVM machines use the virtualization features of the processor, while -ParaVM machines rely on a modified kernel to communicate directly with -the hypervisor. HVMs support boot CDs of any operating system, and -the VNC console applet. The three-minute autoinstaller produces -ParaVMs. ParaVMs typically are more efficient, and always support the -console server.
-More details are on the -wiki, including steps to prepare an HVM guest to boot as a ParaVM -(which you can skip by using the autoinstaller to begin with.)
- -We recommend using a ParaVM when possible and an HVM when necessary.
-""",
- 'CPU Weight': """
-Don't ask us! We're as mystified as you are.""",
- 'Owner': """
-The owner field is used to determine quotas. It must be the name of a
-locker that you are an AFS administrator of. In particular, you or an
-AFS group you are a member of must have AFS rlidwka bits on the
-locker. You can check who administers the LOCKER locker using the
-commands 'attach LOCKER; fs la /mit/LOCKER' on Athena.) See also administrator.""",
- 'Administrator': """
-The administrator field determines who can access the console and
-power on and off the machine. This can be either a user or a moira
-group.""",
- 'Quotas': """
-Quotas are determined on a per-locker basis. Each locker may have a
-maximum of 512 mebibytes of active ram, 50 gibibytes of disk, and 4
-active machines.""",
- 'Console': """
-Framebuffer: At a Linux boot prompt in your VM, try
-setting fb=false to disable the framebuffer. If you don't,
-your machine will run just fine, but the applet's display of the
-console will suffer artifacts.
-""",
- 'Windows': """
-Windows Vista: The Vista image is licensed for all MIT students and will automatically activate off the network; see the licensing confirmation e-mail for details. The installer requires 512 MiB RAM and at least 7.5 GiB disk space (15 GiB or more recommended).
-Windows XP: This is the volume license CD image. You will need your own volume license key to complete the install. We do not have these available for the general MIT community; ask your department if they have one.
-"""
- }
-
- if not subjects:
- subjects = sorted(help_mapping.keys())
-
- d = dict(user=username,
- simple=simple,
- subjects=subjects,
- mapping=help_mapping)
+ session.begin()
+ try:
+ if hasattr(validate, 'disksize'):
+ disksize = validate.disksize
+ disk = machine.disks[0]
+ if disk.size != disksize:
+ olddisk[disk.guest_device_name] = disksize
+ disk.size = disksize
+ session.save_or_update(disk)
+ for diskname in olddisk:
+ controls.resizeDisk(oldname, diskname, str(olddisk[diskname]))
+ session.save_or_update(machine)
+ session.commit()
+ except:
+ session.rollback()
+ raise
- return templates.help(searchList=[d])
+ session.begin()
+ try:
+ if hasattr(validate, 'name'):
+ machine.name = validate.name
+ for n in machine.nics:
+ if n.hostname == oldname:
+ n.hostname = validate.name
+ if hasattr(validate, 'name'):
+ controls.renameMachine(machine, oldname, validate.name)
+ session.save_or_update(machine)
+ session.commit()
+ except:
+ session.rollback()
+ raise
+ if update_acl:
+ cache_acls.refreshMachine(machine)
-def badOperation(u, s, p, e):
- """Function called when accessing an unknown URI."""
- return ({'Status': '404 Not Found'}, 'Invalid operation.')
+ return dict(machine=machine)
def infoDict(username, state, machine):
"""Get the variables used by info.tmpl."""
status = controls.statusInfo(machine)
- checkpoint.checkpoint('Getting status info')
has_vnc = hasVnc(status)
if status is None:
main_status = dict(name=machine.name,
@@ -531,11 +604,14 @@ def infoDict(username, state, machine):
else:
main_status = dict(status[1:])
main_status['host'] = controls.listHost(machine)
- start_time = float(main_status.get('start_time', 0))
- uptime = datetime.timedelta(seconds=int(time.time()-start_time))
+ start_time = main_status.get('start_time')
+ if start_time is None:
+ uptime = "Still booting?"
+ else:
+ start_time = float(start_time)
+ 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))
- checkpoint.checkpoint('Status')
display_fields = [('name', 'Name'),
('description', 'Description'),
('owner', 'Owner'),
@@ -549,7 +625,6 @@ def infoDict(username, state, machine):
('memory', 'RAM'),
'DISK_INFO',
('state', 'state (xen format)'),
- ('cpu_weight', 'CPU weight'+helppopup('CPU Weight')),
]
fields = []
machine_info = {}
@@ -582,18 +657,14 @@ def infoDict(username, state, machine):
pass
#fields.append((disp, None))
- checkpoint.checkpoint('Got fields')
-
-
max_mem = validation.maxMemory(machine.owner, state, machine, False)
- checkpoint.checkpoint('Got mem')
max_disk = validation.maxDisk(machine.owner, machine)
defaults = Defaults()
for name in 'machine_id name description administrator owner memory contact'.split():
- setattr(defaults, name, getattr(machine, name))
+ if getattr(machine, name):
+ setattr(defaults, name, getattr(machine, name))
defaults.type = machine.type.type_id
defaults.disk = "%0.2f" % (machine.disks[0].size/1024.)
- checkpoint.checkpoint('Got defaults')
d = dict(user=username,
on=status is not None,
machine=machine,
@@ -603,56 +674,9 @@ def infoDict(username, state, machine):
ram=machine.memory,
max_mem=max_mem,
max_disk=max_disk,
- owner_help=helppopup("Owner"),
fields = fields)
return d
-def info(username, state, path, fields):
- """Handler for info on a single VM."""
- machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine
- d = infoDict(username, state, machine)
- checkpoint.checkpoint('Got infodict')
- return templates.info(searchList=[d])
-
-def unauthFront(_, _2, _3, fields):
- """Information for unauth'd users."""
- return templates.unauth(searchList=[{'simple' : True,
- 'hostname' : socket.getfqdn()}])
-
-def admin(username, state, path, fields):
- if path == '':
- return ({'Status': '303 See Other',
- 'Location': 'admin/'},
- "You shouldn't see this message.")
- if not username in getAfsGroupMembers(config.adminacl, 'athena.mit.edu'):
- raise InvalidInput('username', username,
- 'Not in admin group %s.' % config.adminacl)
- newstate = State(username, isadmin=True)
- newstate.environ = state.environ
- return handler(username, newstate, path, fields)
-
-def throwError(_, __, ___, ____):
- """Throw an error, to test the error-tracing mechanisms."""
- raise RuntimeError("test of the emergency broadcast system")
-
-mapping = dict(#list=listVms,
- vnc=vnc,
- command=command,
- modify=modify,
- info=info,
- create=create,
- help=helpHandler,
- unauth=unauthFront,
- admin=admin,
- overlord=admin,
- errortest=throwError)
-
-def printHeaders(headers):
- """Print a dictionary as HTTP headers."""
- for key, value in headers.iteritems():
- print '%s: %s' % (key, value)
- print
-
def send_error_mail(subject, body):
import subprocess
@@ -669,98 +693,4 @@ Subject: %s
p.stdin.close()
p.wait()
-def show_error(op, username, fields, err, emsg, traceback):
- """Print an error page when an exception occurs"""
- d = dict(op=op, user=username, fields=fields,
- errorMessage=str(err), stderr=emsg, traceback=traceback)
- details = templates.error_raw(searchList=[d])
- exclude = config.web.errormail_exclude
- if username not in exclude and '*' not in exclude:
- send_error_mail('xvm error on %s for %s: %s' % (op, username, err),
- details)
- d['details'] = details
- return templates.error(searchList=[d])
-
-def handler(username, state, path, fields):
- operation, path = pathSplit(path)
- if not operation:
- operation = 'list'
- print 'Starting', operation
- fun = mapping.get(operation, badOperation)
- return fun(username, state, path, fields)
-
-class App:
- def __init__(self, environ, start_response):
- self.environ = environ
- self.start = start_response
-
- self.username = getUser(environ)
- self.state = State(self.username)
- self.state.environ = environ
-
- random.seed() #sigh
-
- def __iter__(self):
- start_time = time.time()
- database.clear_cache()
- sys.stderr = StringIO()
- fields = cgi.FieldStorage(fp=self.environ['wsgi.input'], environ=self.environ)
- operation = self.environ.get('PATH_INFO', '')
- if not operation:
- self.start("301 Moved Permanently", [('Location', './')])
- return
- if self.username is None:
- operation = 'unauth'
-
- try:
- checkpoint.checkpoint('Before')
- output = handler(self.username, self.state, operation, fields)
- checkpoint.checkpoint('After')
-
- headers = dict(DEFAULT_HEADERS)
- if isinstance(output, tuple):
- new_headers, output = output
- headers.update(new_headers)
- e = revertStandardError()
- if e:
- if hasattr(output, 'addError'):
- output.addError(e)
- else:
- # This only happens on redirects, so it'd be a pain to get
- # the message to the user. Maybe in the response is useful.
- output = output + '\n\nstderr:\n' + e
- output_string = str(output)
- checkpoint.checkpoint('output as a string')
- except Exception, err:
- if not fields.has_key('js'):
- if isinstance(err, InvalidInput):
- self.start('200 OK', [('Content-Type', 'text/html')])
- e = revertStandardError()
- yield str(invalidInput(operation, self.username, fields,
- err, e))
- return
- import traceback
- self.start('500 Internal Server Error',
- [('Content-Type', 'text/html')])
- e = revertStandardError()
- s = show_error(operation, self.username, fields,
- err, e, traceback.format_exc())
- yield str(s)
- return
- status = headers.setdefault('Status', '200 OK')
- del headers['Status']
- self.start(status, headers.items())
- yield output_string
- if fields.has_key('timedebug'):
- yield '
%s' % cgi.escape(str(checkpoint)) - -def constructor(): - connect() - return App - -def main(): - from flup.server.fcgi_fork import WSGIServer - WSGIServer(constructor()).run() - -if __name__ == '__main__': - main() +random.seed() #sigh