'ignore_abort' for twiedenbein

fabfile.py

"""
$ fab -f blah.py -H web03 somefun
[web03] Executing task 'somefun'
[web03] sudo: uname -a

Fatal error: Name lookup failed for web03

Aborting.
would have aborted, but env.ignore_abort 1

Done.
"""

import sys
import fabric
from fabric.api import task, env, get, put, hide, show, cd, lcd, local, run, sudo
from fabric.decorators import runs_once
from fabric.operations import get,open_shell,put,run,sudo,local
from fabric.contrib.console import confirm
from fabric.utils import abort
from functools import wraps


# env['ignore_abort'] = True  # set using the unabort action

def ignore_abort(func):
    """
    catch aborts, and just move on
    """               
    @wraps(func)
    def decorated(*args, **kwargs):
        if env.get('ignore_abort',False):
            try:
                return func(*args, **kwargs)
            except SystemExit as exc:
                print "would have aborted, but env.ignore_abort", exc
                return None
        else:
            return func(*args, **kwargs)
    
    return decorated


@task
@ignore_abort
def somefun():
    sudo('uname -a')


@task
@run_once
def unabort():
    "set env.ingore_abort"
    env.ignore_abort = True
    return None