#!/usr/bin/python

##
## func yaml wrapper tool.
## allows usage of func over stdin/stdin using yaml as a marshalling format
## for access to the Overlord() API from non-Python code.
## this should typically be accessed via a pipe, though also works as
##     func-transmit < yamlfile
##
## Copyright 2008, Various
## Marco Mornati <mmornati@byte-code.com>
## Michael DeHaan <mdehaan@redhat.com>
##
## This software may be freely redistributed under the terms of the GNU
## general public license.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
##


## Example input file format:
"""
clients: "*"
aysnc: False
nforks: 1
module: command
method: run
parameters: "/bin/echo Hello World"
"""

import sys
import distutils.sysconfig

import cobbler.yaml as yaml # FIXME: need to subpackage this as part of Func
import func.overlord.func_command as func_command
import func.overlord.client as fc

# load input from stdin
input = sys.stdin.read()
params = yaml.load(input).next()

# scan arguments
clients    = params.get('clients', "*")
async      = params.get('async', False)
nforks     = params.get('nforks', 1)
module     = params.get('module','unknown')
method     = params.get('method','unknown')
parameters = params.get('parameters', None)

# make the call
client = fc.Overlord(clients, async=async, nforks=nforks)
module_handle = getattr(client, module)
method_handle = getattr(module_handle, method)
if parameters is not None:
    results = method_handle(parameters)
else:
    results = method_handle()
output = yaml.dump(results)

# write to stdout
print output