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@lost-theory
Created February 14, 2012 23:43
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fabric elocal - "local" command that raises an exception
#!/usr/bin/env python
from fabric.api import task, local, settings
class CommandFailed(Exception):
def __init__(self, message, result):
Exception.__init__(self, message)
self.result = result
def elocal(*args, **kwargs):
with settings(warn_only=True):
result = local(*args, **kwargs)
if result.failed:
raise CommandFailed("args: %r, kwargs: %r, error code: %r" % (args, kwargs, result.return_code), result)
return result
###############################################################################
@task
def main():
"""Do the thing, with elocal."""
try:
elocal("ls -al yabbadababa", capture=True)
except CommandFailed, e:
print "command failed yo"
print repr(e)
print str(e)
print e.result.stderr
if __name__ == "__main__":
import fabric.main
import sys
sys.argv.pop(0)
if not sys.argv or '--help' in sys.argv:
sys.argv = ['--list']
new_argv = ['fab', '-f', __file__] + sys.argv
sys.argv = new_argv
fabric.main.main()
"""
$ ./fab.py main
[localhost] local: ls -al yabbadababa
Warning: local() encountered an error (return code 2) while executing 'ls -al yabbadababa'
command failed yo
CommandFailed("args: ('ls -al yabbadababa',), kwargs: {'capture': True}, error code: 2",)
args: ('ls -al yabbadababa',), kwargs: {'capture': True}, error code: 2
ls: cannot access yabbadababa: No such file or directory
Done.
"""
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