def main(argv=None):
"""The "ravtest" main entry point."""
if sys.platform.startswith('win'):
console.error('Windows is not currently supported by "ravtest".\n'
'Please use the Fabric front-end.')
error.exit(1)
parser = create_parser()
args = parse_args(parser, argv)
create_environment(args)
setup_logging()
command = subcommands[args.subcmd][0]
try:
ret = command(args, env)
except KeyboardInterrupt:
console.complete_partial_line()
console.writeln('Exiting at user request.')
ret = error.EX_INTERRUPTED
except SystemExit as e:
console.complete_partial_line()
if env.debug:
console.error('SystemExit caught')
lines = traceback.format_exception(*sys.exc_info())
console.writeln_err('Raised from:')
console.writeln_err(''.join(lines))
ret = e[0]
except Exception as e:
console.complete_partial_line()
console.error(str(e))
if env.debug:
lines = ['An uncaught exception occurred:']
lines += traceback.format_exception(*sys.exc_info())
console.writeln_err()
console.writeln_err(''.join(lines))
console.writeln_err('Environment: {!r}'.format(env))
ret = getattr(e, 'exitstatus', error.EX_SOFTWARE)
return ret
def parse_args(parser, argv=None):
"""Parse aguments."""
# Parse general arguments, extract the command, add command-specific
# arguments, and then re-parse everything again.
# The argparse module provides subparser support, and we could have
# used that. However, there a serious usability issue with that, because
# "command <subcmd> --foo" is an error if --foo is a valid argument
# for command but not for the sub-command. Given that is very common
# to mistakenly pass options out of order, we imlement our own solution
# here that accepts the options in this case.
try:
args = parser.parse_args(argv)
except argparse.ParseError as e:
args = e.namespace
if not (args.help or args.version) and not args.subcmd:
console.write_err(parser.format_usage())
console.error(str(e))
error.exit(error.EX_USAGE)
if args.help and not args.subcmd:
console.write_err(parser.format_help())
error.exit(error.EX_OK)
if args.version and not args.subcmd:
console.writeln_err(_version.version_string)
error.exit(error.EX_OK)
subcmd = args.subcmd
if subcmd not in subcommands:
console.error("Unknown command: '{0}'.", subcmd)
error.exit(error.EX_USAGE)
add_args = subcommands[subcmd][1]
add_args(parser)
try:
args = parser.parse_args(argv)
except argparse.ParseError as e:
args = e.namespace
if not args.help:
console.write_err(parser.format_usage())
console.error(str(e))
error.exit(error.EX_USAGE)
if args.help:
console.write_err(parser.format_help())
error.exit(error.EX_OK)
return args
def do_ssh(args, env):
"""The "ravello ssh" command."""
with env.let(quiet=True):
login.default_login()
keypair.default_keypair()
if manifest.manifest_exists():
with env.let(quiet=True):
manif = manifest.default_manifest()
else:
manif = None
parts = args.application.split(':')
if len(parts) in (1, 2) and manif is None:
error.raise_error('No manifest found ({0}).\n'
'Please specify the fully qualified app name.\n'
'Use `ravtest ps --all` for a list.',
manifest.manifest_name())
if len(parts) in (1, 2):
project = manif['project']['name']
console.info('Project name is `{0}`.', project)
defname = parts[0]
instance = parts[1] if len(parts) == 2 else None
elif len(parts) == 3:
project, defname, instance = parts
else:
error.raise_error('Illegal application name: `{0}`.', appname)
apps = cache.find_applications(project, defname, instance)
if len(apps) == 0:
error.raise_error('No instances of application `{0}` exist.',
defname)
elif len(apps) > 1:
error.raise_error('Multiple instances of `{0}` exist.\n'
'Use `ravtest ps` to list the instances and then\n'
'specify the application with its instance id.',
defname)
app = cache.get_application(apps[0]['id'])
appname = app['name']
_, _, instance = appname.split(':')
vmname = args.vm
vm = application.get_vm(app, vmname)
if vm is None:
error.raise_error('Application `{0}:{1}` has no VM named `{2}`.\n'
'Use `ravtest ps --full` to see a list of VMs.',
defname, instance, vmname)
console.info("Connecting to VM `{0}` of application `{1}:{2}`...",
vmname, defname, instance)
# Start up the application and wait for it if we need to.
state = application.get_application_state(app)
if state not in ('PUBLISHING', 'STARTING', 'STOPPED', 'STARTED'):
error.raise_error("VM `{0}` is in an unknown state.", vmname)
userdata = vm.get('customVmConfigurationData', {})
vmkey = userdata.get('keypair', {})
if vmkey.get('id') != env.public_key['id']:
error.raise_error("VM uses unknown public key `{0}`.",
vmkey.get('name'))
application.start_application(app)
application.wait_for_application(app, [vmname])
# Now run ssh. Prefer openssh but fall back to using Fabric/Paramiko.
host = 'ravello@{0}'.format(vm['dynamicMetadata']['externalIp'])
command = '~/bin/run {0}'.format(args.testid)
openssh = util.find_openssh()
interactive = os.isatty(sys.stdin.fileno())
if interactive and openssh:
if not sys.platform.startswith('win'):
# On Unix use execve(). This is the most efficient.
argv = ['ssh', '-i', env.private_key_file,
'-o', 'UserKnownHostsFile=/dev/null',
'-o', 'StrictHostKeyChecking=no',
'-o', 'LogLevel=quiet',
'-t', host, command]
console.debug('Starting {0}', ' '.join(argv))
os.execve(openssh, argv, os.environ)
else:
# Windows has execve() but for some reason it does not work
# well with arguments with spaces in it. So use subprocess
# instead.
command = [openssh, '-i', env.private_key_file,
'-o', 'UserKnownHostsFile=NUL',
'-o', 'StrictHostKeyChecking=no',
'-o', 'LogLevel=quiet',
'-t', host, command]
ssh = subprocess.Popen(command)
ret = ssh.wait()
error.exit(ret)
# TODO: should also support PuTTY on Windows
console.info(textwrap.dedent("""\
Warning: no local openssh installation found.
Falling back to Fabric/Paramiko for an interactive shell.
However, please note:
* CTRL-C and terminal resize signals may not work.
* Output of programs that repaint the screen may
be garbled (e.g. progress bars).
"""))
fab.env.host_string = host
fab.env.key_filename = env.private_key_file
fab.env.disable_known_hosts = True
fab.env.remote_interrupt = True
fab.env.output_prefix = None
fabric.state.output.running = None
fabric.state.output.status = None
ret = fab.run(command, warn_only=True)
return ret.return_code