diff options
Diffstat (limited to 'morphlib/exts/kvm.check')
-rwxr-xr-x | morphlib/exts/kvm.check | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/morphlib/exts/kvm.check b/morphlib/exts/kvm.check index be7c51c2..04c25069 100755 --- a/morphlib/exts/kvm.check +++ b/morphlib/exts/kvm.check @@ -17,11 +17,16 @@ '''Preparatory checks for Morph 'kvm' write extension''' import cliapp +import re +import urlparse import morphlib.writeexts class KvmPlusSshCheckExtension(morphlib.writeexts.WriteExtension): + + location_pattern = '^/(?P<guest>[^/]+)(?P<path>/.+)$' + def process_args(self, args): if len(args) != 1: raise cliapp.AppException('Wrong number of command line args') @@ -32,4 +37,28 @@ class KvmPlusSshCheckExtension(morphlib.writeexts.WriteExtension): 'Use the `ssh-rsync` write extension to deploy upgrades to an ' 'existing remote system.') + location = args[0] + ssh_host, vm_name, vm_path = self.check_and_parse_location(location) + + try: + cliapp.ssh_runcmd(ssh_host, ['true']) + except cliapp.AppException: + raise cliapp.AppException('Unable to SSH to %s' % ssh_host) + + def check_and_parse_location(self, location): + '''Check and parse the location argument to get relevant data.''' + + x = urlparse.urlparse(location) + + if x.scheme != 'kvm+ssh': + raise cliapp.AppException( + 'URL schema must be kvm+ssh in %s' % location) + + m = re.match(self.location_pattern, x.path) + if not m: + raise cliapp.AppException('Cannot parse location %s' % location) + + return x.netloc, m.group('guest'), m.group('path') + + KvmPlusSshCheckExtension().run() |