Properly separate the auth.fcgi and unauth.fcgi scripts

[invirt/packages/invirt-web.git] / code / controls.py

diff --git a/code/controls.py b/code/controls.py
index 7134668..bbc9f8c 100644 (file)
--- a/code/controls.py
+++ b/code/controls.py
@@ -1,16 +1,15 @@
-"""
-Functions to perform remctls.
-"""
-
-from sipb_xen_database import Machine, Disk, Type, NIC, CDROM, ctx, meta

 import validation
 import validation

-from webcommon import CodeError, InvalidInput
+from invirt.common import CodeError, InvalidInput

 import random
 import random

-import subprocess

 import sys
 import time
 import re
 import cache_acls
 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():
 
 # ... and stolen from xend/uuid.py
 def randomUUID():

@@ -24,39 +23,10 @@ def uuidToString(u):
                      "%02x" * 6]) % tuple(u)
 # end stolen code
 
                      "%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', 'black-mesa.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"""
 
 def lvcreate(machine, disk):
     """Create a single disk for a machine"""

@@ -68,6 +38,26 @@ def makeDisks(machine):
     for disk in machine.disks:
         lvcreate(machine, disk)
 
     for disk in machine.disks:
         lvcreate(machine, disk)
 

+def getswap(disksize, memsize):
+    """Returns the recommended swap partition size."""
+    return int(min(disksize / 4, memsize * 1.5))
+
+def lvinstall(machine, autoinstall):
+    disksize = machine.disks[0].size
+    memsize = machine.memory
+    swapsize = getswap(disksize, memsize)
+    imagesize = disksize - swapsize
+    ip = machine.nics[0].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"""
+    remctl('web', 'lvcopy', machine_orig_name, machine.name, rootpw)
+

 def bootMachine(machine, cdtype):
     """Boot a machine with a given boot CD.
 
 def bootMachine(machine, cdtype):
     """Boot a machine with a given boot CD.
 

@@ -80,80 +70,62 @@ def bootMachine(machine, cdtype):
     else:
         out, err = remctl('control', machine.name, 'create',
                           err=True)
     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:
         raise CodeError('"%s" on "control %s create %s' 
                         % (err, machine.name, cdtype))
 
         raise InvalidInput('action', 'create',
                            'VM %s is already on' % machine.name)
     elif err:
         raise CodeError('"%s" on "control %s create %s' 
                         % (err, machine.name, cdtype))
 

-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 createVm(owner, contact, name, memory, disk_size, is_hvm, cdrom):
+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
     """Create a VM and put it in the database"""
     # put stuff in the table

-    transaction = ctx.current.create_transaction()
+    session.begin()

     try:
     try:

-        validation.validMemory(owner, memory)
-        validation.validDisk(owner, disk_size  * 1. / 1024)
-        validation.validAddVm(owner)
-        res = meta.engine.execute('select nextval('
-                                  '\'"machines_machine_id_seq"\')')
-        id = res.fetchone()[0]
+        validation.Validate(username, state, name=name, description=description, owner=owner, memory=memory, disksize=disksize/1024.)

         machine = Machine()
         machine = Machine()

-        machine.machine_id = id

         machine.name = name
         machine.name = name

+        machine.description = description

         machine.memory = memory
         machine.owner = owner
         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.contact = contact
         machine.uuid = uuidToString(randomUUID())
         machine.boot_off_cd = True

-        machine_type = Type.get_by(hvm=is_hvm)
-        machine.type_id = machine_type.type_id
-        ctx.current.save(machine)
-        disk = Disk(machine_id=machine.machine_id, 
-                    guest_device_name='hda', size=disk_size)
-        open_nics = NIC.select_by(machine_id=None)
-        if not open_nics: #No IPs left!
+        machine.type = machine_type
+        session.save_or_update(machine)
+        disk = Disk(machine=machine,
+                    guest_device_name='hda', size=disksize)
+        nic = NIC.query().filter_by(machine_id=None).filter_by(reusable=True).first()
+        if not nic: #No IPs left!

             raise CodeError("No IP addresses left!  "
             raise CodeError("No IP addresses left!  "

-                            "Contact sipb-xen-dev@mit.edu")
-        nic = open_nics[0]
-        nic.machine_id = machine.machine_id
+                            "Contact %s." % config.web.errormail)
+        nic.machine = machine

         nic.hostname = name
         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)
         cache_acls.refreshMachine(machine)

-        transaction.commit()
+        makeDisks(machine)
+        session.commit()

     except:
     except:

-        transaction.rollback()
+        session.rollback()
+        raise
+    try:
+        if autoinstall:
+            lvinstall(machine, autoinstall)
+        else:
+            # tell it to boot with cdrom
+            bootMachine(machine, cdrom)
+    except CodeError, e:
+        deleteVM(machine)

         raise
         raise

-    registerMachine(machine)
-    makeDisks(machine)
-    # tell it to boot with cdrom
-    bootMachine(machine, cdrom)

     return machine
 
     return machine
 

-def getUptimes(machines=None):
-    """Return a dictionary mapping machine names to uptime strings"""
+def getList():
+    """Return a dictionary mapping machine names to dicts."""

     value_string = remctl('web', 'listvms')
     value_string = remctl('web', 'listvms')

-    lines = value_string.splitlines()
-    d = {}
-    for line in lines:
-        lst = line.split()
-        name, id = lst[:2]
-        uptime = ' '.join(lst[2:])
-        d[name] = uptime
-    ans = {}
-    for m in machines:
-        ans[m] = d.get(m.name)
-    return ans
+    value_dict = yaml.load(value_string, yaml.CSafeLoader)
+    return value_dict

 
 def parseStatus(s):
     """Parse a status string into nested tuples of strings.
 
 def parseStatus(s):
     """Parse a status string into nested tuples of strings.

@@ -189,7 +161,7 @@ def statusInfo(machine):
     if 'Unknown command' in err_string:
         raise CodeError("ERROR in remctl list-long %s is not registered" % 
                         (machine.name,))
     if 'Unknown command' in err_string:
         raise CodeError("ERROR in remctl list-long %s is not registered" % 
                         (machine.name,))

-    elif 'does not exist' in err_string:
+    elif 'is not on' in err_string:

         return None
     elif err_string:
         raise CodeError("ERROR in remctl list-long %s:  %s" % 
         return None
     elif err_string:
         raise CodeError("ERROR in remctl list-long %s:  %s" % 

@@ -197,41 +169,51 @@ def statusInfo(machine):
     status = parseStatus(value_string)
     return status
 
     status = parseStatus(value_string)
     return status
 

+def listHost(machine):
+    """Return the host a machine is running on"""
+    out, err = remctl('control', machine.name, 'listhost', err=True)
+    if err:
+        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)
 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:
     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
         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:
         for disk in machine.disks:

-            ctx.current.delete(disk)
-        for access in machine.acl:
-            ctx.current.delete(access)
-        ctx.current.delete(machine)
-        transaction.commit()
+            session.delete(disk)
+        session.delete(machine)
+        session.commit()

     except:
     except:

-        transaction.rollback()
+        session.rollback()

         raise
         raise

-    for mname, dname in delete_disk_pairs:
-        remctl('web', 'lvremove', mname, dname)
-    unregisterMachine(machine)

 
 

-def commandResult(user, fields):
+def commandResult(username, state, command_name, machine_id, fields):

     start_time = 0
     start_time = 0

-    machine = validation.testMachineId(user, fields.getfirst('machine_id'))
-    action = fields.getfirst('action')
-    cdrom = fields.getfirst('cdrom')
-    if cdrom is not None and not CDROM.get(cdrom):
+    machine = validation.Validate(username, state, machine_id=machine_id).machine
+    action = command_name
+    cdrom = fields.get('cdrom') or None
+    if cdrom is not None and not CDROM.query().filter_by(cdrom_id=cdrom).one():

         raise CodeError("Invalid cdrom type '%s'" % cdrom)    
         raise CodeError("Invalid cdrom type '%s'" % cdrom)    

-    if action not in ('Reboot', 'Power on', 'Power off', 'Shutdown', 
-                      'Delete VM'):
+    if action not in "reboot create destroy shutdown delete".split(" "):

         raise CodeError("Invalid action '%s'" % action)
         raise CodeError("Invalid action '%s'" % action)

-    if action == 'Reboot':
+    if action == 'reboot':

         if cdrom is not None:
             out, err = remctl('control', machine.name, 'reboot', cdrom,
                               err=True)
         if cdrom is not None:
             out, err = remctl('control', machine.name, 'reboot', cdrom,
                               err=True)

@@ -239,7 +221,7 @@ def commandResult(user, fields):
             out, err = remctl('control', machine.name, 'reboot',
                               err=True)
         if err:
             out, err = remctl('control', machine.name, 'reboot',
                               err=True)
         if err:

-            if re.match("Error: Domain '.*' does not exist.", err):
+            if re.match("machine '.*' is not on", err):

                 raise InvalidInput("action", "reboot", 
                                    "Machine is not on")
             else:
                 raise InvalidInput("action", "reboot", 
                                    "Machine is not on")
             else:

@@ -247,36 +229,36 @@ def commandResult(user, fields):
                 print >> sys.stderr, err
                 raise CodeError('ERROR on remctl')
                 
                 print >> sys.stderr, err
                 raise CodeError('ERROR on remctl')
                 

-    elif action == 'Power on':
-        if validation.maxMemory(user, machine) < machine.memory:
+    elif action == 'create':
+        if validation.maxMemory(username, state, machine) < machine.memory:

             raise InvalidInput('action', 'Power on',
                                "You don't have enough free RAM quota "
                                "to turn on this machine.")
         bootMachine(machine, cdrom)
             raise InvalidInput('action', 'Power on',
                                "You don't have enough free RAM quota "
                                "to turn on this machine.")
         bootMachine(machine, cdrom)

-    elif action == 'Power off':
+    elif action == 'destroy':

         out, err = remctl('control', machine.name, 'destroy', err=True)
         if err:
         out, err = remctl('control', machine.name, 'destroy', err=True)
         if err:

-            if re.match("Error: Domain '.*' does not exist.", err):
+            if re.match("machine '.*' is not on", err):

                 raise InvalidInput("action", "Power off", 
                                    "Machine is not on.")
             else:
                 print >> sys.stderr, 'Error on power off:'
                 print >> sys.stderr, err
                 raise CodeError('ERROR on remctl')
                 raise InvalidInput("action", "Power off", 
                                    "Machine is not on.")
             else:
                 print >> sys.stderr, 'Error on power off:'
                 print >> sys.stderr, err
                 raise CodeError('ERROR on remctl')

-    elif action == 'Shutdown':
+    elif action == 'shutdown':

         out, err = remctl('control', machine.name, 'shutdown', err=True)
         if err:
         out, err = remctl('control', machine.name, 'shutdown', err=True)
         if err:

-            if re.match("Error: Domain '.*' does not exist.", err):
+            if re.match("machine '.*' is not on", err):

                 raise InvalidInput("action", "Shutdown", 
                                    "Machine is not on.")
             else:
                 print >> sys.stderr, 'Error on Shutdown:'
                 print >> sys.stderr, err
                 raise CodeError('ERROR on remctl')
                 raise InvalidInput("action", "Shutdown", 
                                    "Machine is not on.")
             else:
                 print >> sys.stderr, 'Error on Shutdown:'
                 print >> sys.stderr, err
                 raise CodeError('ERROR on remctl')

-    elif action == 'Delete VM':
+    elif action == 'delete':

         deleteVM(machine)
 
         deleteVM(machine)
 

-    d = dict(user=user,
+    d = dict(user=username,

              command=action,
              machine=machine)
     return d
              command=action,
              machine=machine)
     return d

@@ -288,5 +270,4 @@ def renameMachine(machine, old_name, new_name):
     for disk in machine.disks:
         remctl("web", "lvrename", old_name, 
                disk.guest_device_name, new_name)
     for disk in machine.disks:
         remctl("web", "lvrename", old_name, 
                disk.guest_device_name, new_name)

-    remctl("web", "moveregister", old_name, new_name)