community.general/lib/ansible/plugins/action/template.py

185 lines
8.3 KiB
Python

# (c) 2015, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import base64
import os
from ansible.plugins.action import ActionBase
from ansible.utils.hashing import checksum_s
class ActionModule(ActionBase):
TRANSFERS_FILES = True
def get_checksum(self, tmp, dest, try_directory=False, source=None):
remote_checksum = self._remote_checksum(tmp, dest)
if remote_checksum in ('0', '2', '3', '4'):
# Note: 1 means the file is not present which is fine; template
# will create it. 3 means directory was specified instead of file
if try_directory and remote_checksum == '3' and source:
base = os.path.basename(source)
dest = os.path.join(dest, base)
remote_checksum = self.get_checksum(tmp, dest, try_directory=False)
if remote_checksum not in ('0', '2', '3', '4'):
return remote_checksum
result = dict(failed=True, msg="failed to checksum remote file."
" Checksum error code: %s" % remote_checksum)
return result
return remote_checksum
def run(self, tmp=None, task_vars=dict()):
''' handler for template operations '''
source = self._task.args.get('src', None)
dest = self._task.args.get('dest', None)
if (source is None and 'first_available_file' not in task_vars) or dest is None:
return dict(failed=True, msg="src and dest are required")
if tmp is None:
tmp = self._make_tmp_path()
##################################################################################################
# FIXME: this all needs to be sorted out
##################################################################################################
# if we have first_available_file in our vars
# look up the files and use the first one we find as src
#if 'first_available_file' in task_vars:
# found = False
# for fn in task_vars.get('first_available_file'):
# fn_orig = fn
# fnt = template.template(self.runner.basedir, fn, task_vars)
# fnd = utils.path_dwim(self.runner.basedir, fnt)
# if not os.path.exists(fnd) and '_original_file' in task_vars:
# fnd = utils.path_dwim_relative(task_vars['_original_file'], 'templates', fnt, self.runner.basedir, check=False)
# if os.path.exists(fnd):
# source = fnd
# found = True
# break
# if not found:
# result = dict(failed=True, msg="could not find src in first_available_file list")
# return ReturnData(conn=conn, comm_ok=False, result=result)
#else:
if 1:
if self._task._role is not None:
source = self._loader.path_dwim_relative(self._task._role._role_path, 'templates', source)
else:
source = self._loader.path_dwim(source)
##################################################################################################
# END FIXME
##################################################################################################
# Expand any user home dir specification
dest = self._remote_expand_user(dest, tmp)
directory_prepended = False
if dest.endswith(os.sep):
directory_prepended = True
base = os.path.basename(source)
dest = os.path.join(dest, base)
# template the source data locally & get ready to transfer
try:
with open(source, 'r') as f:
template_data = f.read()
resultant = self._templar.template(template_data, preserve_trailing_newlines=True)
except Exception as e:
return dict(failed=True, msg=type(e).__name__ + ": " + str(e))
local_checksum = checksum_s(resultant)
remote_checksum = self.get_checksum(tmp, dest, not directory_prepended, source=source)
if isinstance(remote_checksum, dict):
# Error from remote_checksum is a dict. Valid return is a str
return remote_checksum
if local_checksum != remote_checksum:
# if showing diffs, we need to get the remote value
dest_contents = ''
# FIXME: still need to implement diff mechanism
#if self.runner.diff:
# # using persist_files to keep the temp directory around to avoid needing to grab another
# dest_result = self.runner._execute_module(conn, tmp, 'slurp', "path=%s" % dest, task_vars=task_vars, persist_files=True)
# if 'content' in dest_result.result:
# dest_contents = dest_result.result['content']
# if dest_result.result['encoding'] == 'base64':
# dest_contents = base64.b64decode(dest_contents)
# else:
# raise Exception("unknown encoding, failed: %s" % dest_result.result)
xfered = self._transfer_data(self._shell.join_path(tmp, 'source'), resultant)
# fix file permissions when the copy is done as a different user
if self._connection_info.become and self._connection_info.become_user != 'root':
self._remote_chmod('a+r', xfered, tmp)
# run the copy module
new_module_args = self._task.args.copy()
new_module_args.update(
dict(
src=xfered,
dest=dest,
original_basename=os.path.basename(source),
follow=True,
),
)
# FIXME: noop stuff needs to be sorted out
#if self.runner.noop_on_check(task_vars):
# return ReturnData(conn=conn, comm_ok=True, result=dict(changed=True), diff=dict(before_header=dest, after_header=source, before=dest_contents, after=resultant))
#else:
# res = self.runner._execute_module(conn, tmp, 'copy', module_args_tmp, task_vars=task_vars, complex_args=complex_args)
# if res.result.get('changed', False):
# res.diff = dict(before=dest_contents, after=resultant)
# return res
result = self._execute_module(module_name='copy', module_args=new_module_args)
if result.get('changed', False):
result['diff'] = dict(before=dest_contents, after=resultant)
return result
else:
# when running the file module based on the template data, we do
# not want the source filename (the name of the template) to be used,
# since this would mess up links, so we clear the src param and tell
# the module to follow links. When doing that, we have to set
# original_basename to the template just in case the dest is
# a directory.
new_module_args = self._task.args.copy()
new_module_args.update(
dict(
src=None,
original_basename=os.path.basename(source),
follow=True,
),
)
# FIXME: this may not be required anymore, as the checkmod params
# should be in the regular module args?
# be sure to task_vars the check mode param into the module args and
# rely on the file module to report its changed status
#if self.runner.noop_on_check(task_vars):
# new_module_args['CHECKMODE'] = True
return self._execute_module(module_name='file', module_args=new_module_args)