Add a generic kvm recipe.

Simply add runner scripts

setup.py

@@ -48,6 +48,7 @@ setup(name=name,
           'erp5 = slapos.recipe.erp5:Recipe',
           'erp5testnode = slapos.recipe.erp5testnode:Recipe',
           'generate.mac = slapos.recipe.generatemac:Recipe',
+          'generic.kvm = slapos.recipe.generic_kvm:Recipe',
           'helloworld = slapos.recipe.helloworld:Recipe',
           'java = slapos.recipe.java:Recipe',
           'kumofs = slapos.recipe.kumofs:Recipe',

slapos/recipe/generic_kvm/__init__.py

+##############################################################################
+#
+# Copyright (c) 2011 Vifib SARL and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+from slapos.recipe.librecipe import GenericBaseRecipe
+import binascii
+import os
+import sys
+
+class Recipe(GenericBaseRecipe):
+  """
+  kvm instance configuration.
+  """
+
+  def __init__(self, buildout, name, options):
+    options['passwd'] = binascii.hexlify(os.urandom(4))
+    return GenericBaseRecipe.__init__(self, buildout, name, options)
+
+  def install(self):
+    config = dict(
+      tap_interface=self.options['tap'],
+      vnc_ip=self.options['vnc-ip'],
+      vnc_port=self.options['vnc-port'],
+      nbd_ip=self.options['nbd-ip'],
+      nbd_port=self.options['nbd-port'],
+      disk_path=self.options['disk-path'],
+      disk_size=self.options['disk-size'],
+      mac_address=self.options['mac-address'],
+      smp_count=self.options['smp-count'],
+      ram_size=self.options['ram-size'],
+      socket_path=self.options['socket-path'],
+      pid_file_path=self.options['pid-path'],
+      python_path=sys.executable,
+      shell_path=self.options['shell-path'],
+      qemu_path=self.options['qemu-path'],
+      qemu_img_path=self.options['qemu-img-path'],
+      # XXX Weak password
+      vnc_passwd=self.options['passwd']
+    )
+
+    # Runners
+    runner_path = self.createExecutable(
+      self.options['runner-path'],
+      self.substituteTemplate(self.getTemplateFilename('kvm_run.in'),
+                              config))
+
+    controller_path = self.createExecutable(
+      self.options['controller-path'],
+      self.substituteTemplate(self.getTemplateFilename('kvm_controller_run.in'),
+                              config))
+
+
+    return [runner_path, controller_path]
+

slapos/recipe/generic_kvm/template/kvm_controller_run.in

+#!%(python_path)s
+# BEWARE: This file is operated by slapgrid
+# BEWARE: It will be overwritten automatically
+
+# Echo client program
+import socket
+import time
+
+# Connect to KVM qmp socket
+so = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+connected = False
+while not connected:
+  try:
+    so.connect('%(socket_path)s')
+  except socket.error:
+    time.sleep(1)
+  else:
+    connected = True
+data = so.recv(1024)
+
+# Enable qmp
+so.send('{ "execute": "qmp_capabilities" }')
+data = so.recv(1024)
+
+# Set VNC password
+so.send('{ "execute": "change", ' \
+        '"arguments": { "device": "vnc", "target": "password", ' \
+        '               "arg": "%(vnc_passwd)s" } }')
+data = so.recv(1024)
+
+# Finish
+so.close()

slapos/recipe/generic_kvm/template/kvm_run.in

+#!%(shell_path)s
+# BEWARE: This file is operated by slapgrid
+# BEWARE: It will be overwritten automatically
+
+if [ ! -e "%(disk_path)s" ]
+  then "%(qemu_img_path)s" create -f qcow2 "%(disk_path)s" %(disk_size)sG
+fi
+
+# TODO: -net nic,model=virtio, but OS installer has to provide the virtio_net
+# module
+exec %(qemu_path)s \
+  -net nic,macaddr=%(mac_address)s \
+  -smp %(smp_count)s \
+  -m %(ram_size)s \
+  -cdrom nbd:[%(nbd_ip)s]:%(nbd_port)s \
+  -drive file=%(disk_path)s,if=virtio,boot=on \
+  -vnc %(vnc_ip)s:1,ipv4,password \
+  -boot menu=on \
+  -qmp unix:%(socket_path)s,server \
+  -pidfile %(pid_file_path)s \
+  -no-kvm
+ # -net tap,ifname=%(tap_interface)s,script=no,downscript=no \