159 lines
4.7 KiB
Python
Executable File
159 lines
4.7 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright 2015 Sam Yaple
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# Copyright 2016 intel
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import inspect
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import os
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import shutil
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import tempfile
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from yaml import dump
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from yaml import safe_load
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try:
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from yaml import CDumper as Dumper # noqa: F401
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from yaml import CLoader as Loader # noqa: F401
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except ImportError:
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from yaml import Dumper # noqa: F401
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from yaml import Loader # noqa: F401
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from ansible import constants
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from ansible.plugins import action
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import six
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DOCUMENTATION = '''
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---
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module: merge_yaml
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short_description: Merge yaml-style configs
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description:
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- PyYAML is used to merge several yaml files into one
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options:
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dest:
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description:
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- The destination file name
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required: True
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type: str
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sources:
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description:
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- A list of files on the destination node to merge together
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default: None
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required: True
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type: str
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author: Sean Mooney
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'''
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EXAMPLES = '''
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Merge multiple yaml files:
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- hosts: localhost
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tasks:
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- name: Merge yaml files
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merge_yaml:
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sources:
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- "/tmp/default.yml"
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- "/tmp/override.yml"
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dest:
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- "/tmp/out.yml"
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'''
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class ActionModule(action.ActionBase):
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TRANSFERS_FILES = True
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def read_config(self, source):
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result = None
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# Only use config if present
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if os.access(source, os.R_OK):
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with open(source, 'r') as f:
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template_data = f.read()
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template_data = self._templar.template(template_data)
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result = safe_load(template_data)
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return result or {}
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def run(self, tmp=None, task_vars=None):
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if task_vars is None:
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task_vars = dict()
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result = super(ActionModule, self).run(tmp, task_vars)
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# NOTE(jeffrey4l): Ansible 2.1 add a remote_user param to the
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# _make_tmp_path function. inspect the number of the args here. In
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# this way, ansible 2.0 and ansible 2.1 are both supported
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make_tmp_path_args = inspect.getargspec(self._make_tmp_path)[0]
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if not tmp and len(make_tmp_path_args) == 1:
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tmp = self._make_tmp_path()
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if not tmp and len(make_tmp_path_args) == 2:
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remote_user = (task_vars.get('ansible_user')
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or self._play_context.remote_user)
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tmp = self._make_tmp_path(remote_user)
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# save template args.
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extra_vars = self._task.args.get('vars', list())
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old_vars = self._templar._available_variables
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temp_vars = task_vars.copy()
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temp_vars.update(extra_vars)
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self._templar.set_available_variables(temp_vars)
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output = {}
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sources = self._task.args.get('sources', None)
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if not isinstance(sources, list):
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sources = [sources]
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for source in sources:
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Utils.update_nested_conf(output, self.read_config(source))
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# restore original vars
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self._templar.set_available_variables(old_vars)
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local_tempdir = tempfile.mkdtemp(dir=constants.DEFAULT_LOCAL_TMP)
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try:
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result_file = os.path.join(local_tempdir, 'source')
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with open(result_file, 'wb') as f:
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f.write(dump(output, default_flow_style=False))
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new_task = self._task.copy()
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new_task.args.pop('sources', None)
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new_task.args.update(
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dict(
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src=result_file
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)
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)
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copy_action = self._shared_loader_obj.action_loader.get(
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'copy',
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task=new_task,
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connection=self._connection,
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play_context=self._play_context,
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loader=self._loader,
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templar=self._templar,
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shared_loader_obj=self._shared_loader_obj)
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result.update(copy_action.run(task_vars=task_vars))
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finally:
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shutil.rmtree(local_tempdir)
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return result
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class Utils(object):
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@staticmethod
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def update_nested_conf(conf, update):
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for k, v in six.iteritems(update):
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if isinstance(v, dict):
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conf[k] = Utils.update_nested_conf(conf.get(k, {}), v)
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else:
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conf[k] = v
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return conf
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