[libvirt] [PATCH 13/16] Add InteractiveContainer support. First use case will be OpenShift.
Daniel P. Berrange
berrange at redhat.com
Wed Apr 3 14:42:01 UTC 2013
On Wed, Apr 03, 2013 at 10:34:33AM -0400, Daniel J Walsh wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 04/03/2013 08:47 AM, Daniel P. Berrange wrote:
> > On Tue, Apr 02, 2013 at 06:11:29PM -0400, Dan Walsh wrote:
> >> Differentiating on which kind of container to create based off of the
> >>
> >> --command == InteractiveContainer --unitfile == ServiceContainer
> >>
> >> Resorted create args to be shown aphabetically except for the --command
> >> and --unitfile which I want to come at the end. ---
> >> bin/virt-sandbox-service | 139
> >> +++++++++++++++++++++++++++++++++-------------- 1 file changed, 99
> >> insertions(+), 40 deletions(-)
> >>
> >> diff --git a/bin/virt-sandbox-service b/bin/virt-sandbox-service index
> >> f4d0eff..b559cf5 100755 --- a/bin/virt-sandbox-service +++
> >> b/bin/virt-sandbox-service @@ -413,6 +413,45 @@ class Container: mount =
> >> LibvirtSandbox.ConfigMountRam.new(dest, size);
> >> self.config.add_mount(mount)
> >>
> >> +class InteractiveContainer(Container): + def __init__(self,
> >> name=None, uri = "lxc:///", path = Container.DEFAULT_PATH, config=None,
> >> create=False): + Container.__init__(self, name, uri, path, config,
> >> create) + + if create: + self.config =
> >> LibvirtSandbox.ConfigInteractive.new(name) + + def
> >> _gen_filesystems(self): + Container._gen_filesystems(self) +
> >> self.add_bind_mount(self.dest, self.path) + + def _create(self): +
> >> # + # Create an InteractiveContainer + # +
> >> Container.create(self) + self._gen_filesystems() + + if
> >> self.image: + self._create_image() +
> >> self._umount() + sys.stdout.write(_("Created sandbox container
> >> image %s\n") % self.image) + else: +
> >> sys.stdout.write(_("Created sandbox container dir %s\n") % self.dest) +
> >> self.save_config() + + def create(self): + try: +
> >> self._create() + except Exception, e: + try: +
> >> self._delete() + except Exception, e2: + pass +
> >> raise e + + def set_command(self, command): +
> >> self.config.set_command(command) + class ServiceContainer(Container):
> >> IGNORE_DIRS = [ "/var/run/", "/etc/logrotate.d/", "/etc/pam.d" ]
> >> DEFAULT_DIRS = [ "/etc", "/var" ] @@ -836,19 +875,26 @@ MB =
> >> int(1000000)
> >>
> >> def delete(args): config = read_config(args.name) - container =
> >> ServiceContainer(uri=args.uri, config = config) + if
> >> isinstance(config, gi.repository.LibvirtSandbox.ConfigInteractive): +
> >> container = InteractiveContainer(uri=args.uri, config = config) +
> >> else: + container = ServiceContainer(uri=args.uri, config =
> >> config) container.delete()
> >>
> >> def create(args): - container = ServiceContainer(name = args.name,
> >> uri=args.uri, create = True) - container.set_copy(args.copy) + if
> >> args.command: + container = InteractiveContainer(name = args.name,
> >> uri=args.uri, create = True) +
> >> container.set_command(args.command.split())
> >
> > This is bad because it does not take account of shell quoting rules so if
> > you have a command
> >
> > /usr/bin/foo "some bar"
> >
> > You'll create
> >
> > ['/usr/bin/foo', 'some', 'bar']
> >
> >> @@ -1022,28 +1075,34 @@ def gen_create_args(subparser): parser =
> >> subparser.add_parser("create", help=_("create a sandbox container"))
> >>
> >> + parser.add_argument("-n", "--network", dest="network", +
> >> action=SetNet, default=[], + help=_("Specify the
> >> network configuration"))
> >
> >> - parser.add_argument("-N", "--network", dest="network", -
> >> action=SetNet, - help=_("Specify the network
> >> configuration"))
> >
> > You've changed '-N' into '-n' - please don't - the use of '-N' was
> > intentionale to match 'virt-sandbox' command line arg names.
> >
> >>
> >> - image = parser.add_argument_group("Create On Disk Image File") - -
> >> image.add_argument("-i", "--imagesize", dest="imagesize", default =
> >> None, - action=SizeAction, -
> >> help=_("create image of this many megabytes.")) -
> >> parser.add_argument("-C", "--copy", default=False, -
> >> action="store_true", - help=_("copy content from
> >> /etc and /var directories that will be mounted within the sandbox")) +
> >> ctype = parser.add_argument_group(_("Type of sandbox container to
> >> create")) + group = ctype.add_mutually_exclusive_group(required=True)
> >> + group.add_argument("-c", "--command", +
> >> dest="command", default=None, + help=_("Command to
> >> run within the sandbox container"))
> >
> > IMHO it is better to make this work like virt-sandbox, where you can pass
> > the command + its args as args on the end of the command line eg instead
> > of
> >
> > virt-sandbox-service create -c "/usr/bin/foo bar wizz"
> >
> > We should allow
> >
> > virt-sandbox-service create -c /usr/bin/foo bar wizz
> >
> > virt-sandbox-service create -c -- /usr/bin/foo bar wizz
> >
> > so we don't have todo parsing of the -c arg - we just get the string list
> > straight from the sys.argv
> >
> >
> > Daniel
> >
>
> Shouldn't the syntax be
>
> virt-sandbox-service create foo1 -- /usr/bin/foo bar wizz
>
> And
>
> virt-sandbox-service create -u httpd.service httpd1
Opps, yes, I missed out the sandbox name in my examples.
Daniel
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