cdist/cdist/core/code.py

202 lines
8.3 KiB
Python

# -*- coding: utf-8 -*-
#
# 2011-2017 Steven Armstrong (steven-cdist at armstrong.cc)
# 2011-2013 Nico Schottelius (nico-cdist at schottelius.org)
# 2014 Daniel Heule (hda at sfs.biz)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import os
from . import util
'''
common:
runs only locally, does not need remote
env:
PATH: prepend directory with type emulator symlinks == local.bin_path
__target_host: the target host we are working on
__target_hostname: the target hostname provided from __target_host
__target_fqdn: the target's fully qualified domain name provided from
__target_host
__cdist_manifest: full qualified path of the manifest == script
__cdist_type_base_path: full qualified path to the directory where
types are defined for use in type emulator
== local.type_path
gencode-local
script: full qualified path to a types gencode-local
env:
__target_host: the target host we are working on
__target_hostname: the target hostname provided from __target_host
__target_fqdn: the target's fully qualified domain name provided from
__target_host
__global: full qualified path to the global
output dir == local.out_path
__object: full qualified path to the object's dir
__object_id: the objects id
__object_fq: full qualified object id, iow: $type.name + / + object_id
__type: full qualified path to the type's dir
__files: full qualified path to the files dir
__target_host_tags: comma spearated list of host tags
returns: string containing the generated code or None
gencode-remote
script: full qualified path to a types gencode-remote
env:
__target_host: the target host we are working on
__target_hostname: the target hostname provided from __target_host
__target_fqdn: the target's fully qualified domain name provided from
__target_host
__global: full qualified path to the global
output dir == local.out_path
__object: full qualified path to the object's dir
__object_id: the objects id
__object_fq: full qualified object id, iow: $type.name + / + object_id
__type: full qualified path to the type's dir
__files: full qualified path to the files dir
__target_host_tags: comma spearated list of host tags
returns: string containing the generated code or None
code-local
script: full qualified path to object's code-local
- run script localy
returns: string containing the output
code-remote
script: full qualified path to object's code-remote
- copy script to remote
- run script remotely
returns: string containing the output
'''
class Code(object):
"""Generates and executes cdist code scripts.
"""
# target_host is tuple (target_host, target_hostname, target_fqdn)
def __init__(self, target_host, local, remote, dry_run=False):
self.target_host = target_host
self.local = local
self.remote = remote
self.env = {
'__target_host': self.target_host[0],
'__target_hostname': self.target_host[1],
'__target_fqdn': self.target_host[2],
'__global': self.local.base_path,
'__files': self.local.files_path,
'__target_host_tags': self.local.target_host_tags,
'__cdist_log_level': util.log_level_env_var_val(local.log),
'__cdist_log_level_name': util.log_level_name_env_var_val(
local.log),
}
if dry_run:
self.env['__cdist_dry_run'] = '1'
def _run_gencode(self, cdist_object, which):
cdist_type = cdist_object.cdist_type
script = os.path.join(self.local.type_path,
getattr(cdist_type, 'gencode_%s_path' % which))
if os.path.isfile(script):
env = os.environ.copy()
env.update(self.env)
env.update({
'__type': cdist_object.cdist_type.absolute_path,
'__object': cdist_object.absolute_path,
'__object_id': cdist_object.object_id,
'__object_name': cdist_object.name,
})
message_prefix = cdist_object.name
if self.local.save_output_streams:
stderr_path = os.path.join(cdist_object.stderr_path,
'gencode-' + which)
with open(stderr_path, 'ba+') as stderr:
return self.local.run_script(script, env=env,
return_output=True,
message_prefix=message_prefix,
stderr=stderr)
else:
return self.local.run_script(script, env=env,
return_output=True,
message_prefix=message_prefix)
def run_gencode_local(self, cdist_object):
"""Run the gencode-local script for the given cdist object."""
return self._run_gencode(cdist_object, 'local')
def run_gencode_remote(self, cdist_object):
"""Run the gencode-remote script for the given cdist object."""
return self._run_gencode(cdist_object, 'remote')
def transfer_code_remote(self, cdist_object):
"""Transfer the code_remote script for the given object to the
remote side."""
source = os.path.join(self.local.object_path,
cdist_object.code_remote_path)
destination = os.path.join(self.remote.object_path,
cdist_object.code_remote_path)
self.remote.mkdir(os.path.dirname(destination))
self.remote.transfer(source, destination)
def _run_code(self, cdist_object, which, env=None):
which_exec = getattr(self, which)
script = os.path.join(which_exec.object_path,
getattr(cdist_object, 'code_%s_path' % which))
if which_exec.save_output_streams:
stderr_path = os.path.join(cdist_object.stderr_path,
'code-' + which)
stdout_path = os.path.join(cdist_object.stdout_path,
'code-' + which)
with open(stderr_path, 'ba+') as stderr, \
open(stdout_path, 'ba+') as stdout:
return which_exec.run_script(script, env=env, stdout=stdout,
stderr=stderr)
else:
return which_exec.run_script(script, env=env)
def run_code_local(self, cdist_object):
"""Run the code-local script for the given cdist object."""
# Put some env vars, to allow read only access to the parameters
# over $__object
env = os.environ.copy()
env.update(self.env)
env.update({
'__object': cdist_object.absolute_path,
'__object_id': cdist_object.object_id,
})
return self._run_code(cdist_object, 'local', env=env)
def run_code_remote(self, cdist_object):
"""Run the code-remote script for the given cdist object on the
remote side."""
# Put some env vars, to allow read only access to the parameters
# over $__object which is already on the remote side
env = {
'__object': os.path.join(self.remote.object_path,
cdist_object.path),
'__object_id': cdist_object.object_id,
}
return self._run_code(cdist_object, 'remote', env=env)