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use defaults better, improve/fix setup.py

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This commit is contained in:
Michael DeHaan 2012-02-23 21:37:39 -05:00
parent 2c873a4467
commit 3da6370a65
3 changed files with 66 additions and 32 deletions
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12
bin/ansible
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@ -26,8 +26,8 @@ import json
import os
import ansible
DEFAULT_HOST_LIST = '~/.ansible_hosts'
DEFAULT_MODULE_PATH = '~/ansible'
DEFAULT_HOST_LIST = '/etc/ansible/hosts'
DEFAULT_MODULE_PATH = '/usr/share/ansible'
DEFAULT_MODULE_NAME = 'ping'
DEFAULT_PATTERN = '*'
DEFAULT_FORKS = 3
@ -54,7 +54,6 @@ class Cli(object):
help="hostname pattern", default=DEFAULT_PATTERN)
options, args = parser.parse_args()
host_list = self._host_list(options.host_list)
# TODO: more shell like splitting on module_args would
# be a good idea
@ -63,15 +62,12 @@ class Cli(object):
module_name=options.module_name,
module_path=options.module_path,
module_args=options.module_args.split(' '),
host_list=host_list,
host_list=options.host_list,
forks=options.forks,
pattern=options.pattern,
verbose=False,
)
def _host_list(self, host_list):
host_list = os.path.expanduser(host_list)
return file(host_list).read().split("\n")
if __name__ == '__main__':
result = Cli().runner().run()

76
lib/ansible/__init__.py
View file

@ -24,19 +24,18 @@ from multiprocessing import Process, Pipe
from itertools import izip
import os
import json
import traceback
# non-core
import paramiko
# TODO -- library should have defaults, not just CLI
# update Runner constructor below to use
DEFAULT_HOST_LIST = '~/.ansible_hosts'
DEFAULT_MODULE_PATH = '~/ansible'
DEFAULT_HOST_LIST = '/etc/ansible/hosts'
DEFAULT_MODULE_PATH = '/usr/share/ansible'
DEFAULT_MODULE_NAME = 'ping'
DEFAULT_PATTERN = '*'
DEFAULT_FORKS = 3
DEFAULT_MODULE_ARGS = ''
DEFAULT_TIMEOUT = 60
class Pooler(object):
@ -59,20 +58,40 @@ class Pooler(object):
class Runner(object):
def __init__(self, host_list=[], module_path=None,
module_name=None, module_args=[],
forks=3, timeout=60, pattern='*'):
def __init__(self,
host_list=DEFAULT_HOST_LIST,
module_path=DEFAULT_MODULE_PATH,
module_name=DEFAULT_MODULE_NAME,
module_args=DEFAULT_MODULE_ARGS,
forks=DEFAULT_FORKS,
timeout=DEFAULT_TIMEOUT,
pattern=DEFAULT_PATTERN,
verbose=False):
self.host_list = host_list
'''
Constructor.
'''
self.host_list = self._parse_hosts(host_list)
self.module_path = module_path
self.module_name = module_name
self.forks = forks
self.pattern = pattern
self.module_args = module_args
self.timeout = timeout
self.verbose = verbose
def _parse_hosts(self, host_list):
''' parse the host inventory file if not sent as an array '''
if type(host_list) != list:
host_list = os.path.expanduser(host_list)
return file(host_list).read().split("\n")
return host_list
def _matches(self, host_name):
''' returns if a hostname is matched by the pattern '''
if host_name == '':
return False
if fnmatch.fnmatch(host_name, self.pattern):
@ -80,6 +99,7 @@ class Runner(object):
return False
def _connect(self, host):
''' obtains a paramiko connection to the host '''
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
try:
@ -87,20 +107,29 @@ class Runner(object):
allow_agent=True, look_for_keys=True)
return ssh
except:
# TODO -- just convert traceback to string
# and return a seperate hash of failed hosts
if self.verbose:
traceback.print_exc()
return None
def _executor(self, host):
''' callback executed in parallel for each host '''
# TODO: try/catch returning none
conn = self._connect(host)
if not conn:
return [ host, None ]
if self.module_name != "copy":
# transfer a module, set it executable, and run it
outpath = self._copy_module(conn)
self._exec_command(conn, "chmod +x %s" % outpath)
cmd = self._command(outpath)
result = self._exec_command(conn, cmd)
result = json.loads(result)
else:
# SFTP file copy module is not really a module
ftp = conn.open_sftp()
ftp.put(self.module_args[0], self.module_args[1])
ftp.close()
@ -109,23 +138,32 @@ class Runner(object):
return [ host, result ]
def _command(self, outpath):
''' form up a command string '''
cmd = "%s %s" % (outpath, " ".join(self.module_args))
return cmd
def _exec_command(self, conn, cmd):
''' execute a command over SSH '''
stdin, stdout, stderr = conn.exec_command(cmd)
results = stdout.read()
return results
def _copy_module(self, conn):
inpath = os.path.expanduser(os.path.join(self.module_path, self.module_name))
outpath = os.path.join("/var/spool/", "ansible_%s" % self.module_name)
ftp = conn.open_sftp()
ftp.put(inpath, outpath)
ftp.close()
return outpath
''' transfer a module over SFTP '''
in_path = os.path.expanduser(
os.path.join(self.module_path, self.module_name)
)
out_path = os.path.join(
"/var/spool/",
"ansible_%s" % self.module_name
)
sftp = conn.open_sftp()
sftp.put(in_path, out_path)
sftp.close()
return out_path
def run(self):
''' xfer & run module on all matched hosts '''
hosts = [ h for h in self.host_list if self._matches(h) ]
def executor(x):
return self._executor(x)
@ -136,12 +174,10 @@ class Runner(object):
if __name__ == '__main__':
# TODO: if host list is string load from file
# test code...
r = Runner(
host_list = [ '127.0.0.1' ],
module_path='~/ansible',
host_list = DEFAULT_HOST_LIST,
module_name='ping',
module_args='',
pattern='*',

10
setup.py
View file

@ -14,10 +14,12 @@ setup(name='ansible',
'ansible',
],
data_files=[
('/usr/share/ancible', 'library/ping'),
('/usr/share/ancible', 'library/command'),
('/usr/share/ancible', 'library/facter'),
('/usr/share/ancible', 'library/copy'),
('/usr/share/ansible', [
'library/ping',
'library/command',
'library/facter',
'library/copy',
])
],
scripts=[
'bin/ansible',