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167 lines
6.7 KiB
Python
167 lines
6.7 KiB
Python
# Copyright: (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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# Copyright: (c) 2012-17, Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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DOCUMENTATION = """
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name: template
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author: Michael DeHaan
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version_added: "0.9"
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short_description: retrieve contents of file after templating with Jinja2
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description:
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- Returns a list of strings; for each template in the list of templates you pass in, returns a string containing the results of processing that template.
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options:
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_terms:
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description: list of files to template
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convert_data:
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type: bool
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description:
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- Whether to convert YAML into data. If False, strings that are YAML will be left untouched.
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- Mutually exclusive with the jinja2_native option.
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variable_start_string:
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description: The string marking the beginning of a print statement.
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default: '{{'
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version_added: '2.8'
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type: str
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variable_end_string:
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description: The string marking the end of a print statement.
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default: '}}'
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version_added: '2.8'
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type: str
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jinja2_native:
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description:
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- Controls whether to use Jinja2 native types.
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- It is off by default even if global jinja2_native is True.
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- Has no effect if global jinja2_native is False.
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- This offers more flexibility than the template module which does not use Jinja2 native types at all.
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- Mutually exclusive with the convert_data option.
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default: False
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version_added: '2.11'
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type: bool
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template_vars:
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description: A dictionary, the keys become additional variables available for templating.
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default: {}
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version_added: '2.3'
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type: dict
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comment_start_string:
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description: The string marking the beginning of a comment statement.
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version_added: '2.12'
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type: str
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comment_end_string:
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description: The string marking the end of a comment statement.
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version_added: '2.12'
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type: str
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"""
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EXAMPLES = """
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- name: show templating results
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debug:
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msg: "{{ lookup('template', './some_template.j2') }}"
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- name: show templating results with different variable start and end string
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debug:
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msg: "{{ lookup('template', './some_template.j2', variable_start_string='[%', variable_end_string='%]') }}"
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- name: show templating results with different comment start and end string
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debug:
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msg: "{{ lookup('template', './some_template.j2', comment_start_string='[#', comment_end_string='#]') }}"
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"""
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RETURN = """
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_raw:
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description: file(s) content after templating
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type: list
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elements: raw
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"""
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from copy import deepcopy
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import os
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import ansible.constants as C
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from ansible.errors import AnsibleError
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from ansible.plugins.lookup import LookupBase
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from ansible.module_utils._text import to_bytes, to_text
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from ansible.template import generate_ansible_template_vars, AnsibleEnvironment
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from ansible.utils.display import Display
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if C.DEFAULT_JINJA2_NATIVE:
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from ansible.utils.native_jinja import NativeJinjaText
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display = Display()
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class LookupModule(LookupBase):
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def run(self, terms, variables, **kwargs):
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ret = []
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self.set_options(var_options=variables, direct=kwargs)
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# capture options
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convert_data_p = self.get_option('convert_data')
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lookup_template_vars = self.get_option('template_vars')
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jinja2_native = self.get_option('jinja2_native')
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variable_start_string = self.get_option('variable_start_string')
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variable_end_string = self.get_option('variable_end_string')
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comment_start_string = self.get_option('comment_start_string')
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comment_end_string = self.get_option('comment_end_string')
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if C.DEFAULT_JINJA2_NATIVE and not jinja2_native:
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templar = self._templar.copy_with_new_env(environment_class=AnsibleEnvironment)
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else:
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templar = self._templar
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for term in terms:
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display.debug("File lookup term: %s" % term)
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lookupfile = self.find_file_in_search_path(variables, 'templates', term)
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display.vvvv("File lookup using %s as file" % lookupfile)
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if lookupfile:
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b_template_data, show_data = self._loader._get_file_contents(lookupfile)
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template_data = to_text(b_template_data, errors='surrogate_or_strict')
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# set jinja2 internal search path for includes
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searchpath = variables.get('ansible_search_path', [])
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if searchpath:
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# our search paths aren't actually the proper ones for jinja includes.
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# We want to search into the 'templates' subdir of each search path in
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# addition to our original search paths.
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newsearchpath = []
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for p in searchpath:
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newsearchpath.append(os.path.join(p, 'templates'))
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newsearchpath.append(p)
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searchpath = newsearchpath
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searchpath.insert(0, os.path.dirname(lookupfile))
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# The template will have access to all existing variables,
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# plus some added by ansible (e.g., template_{path,mtime}),
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# plus anything passed to the lookup with the template_vars=
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# argument.
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vars = deepcopy(variables)
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vars.update(generate_ansible_template_vars(term, lookupfile))
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vars.update(lookup_template_vars)
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with templar.set_temporary_context(variable_start_string=variable_start_string,
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variable_end_string=variable_end_string,
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comment_start_string=comment_start_string,
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comment_end_string=comment_end_string,
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available_variables=vars, searchpath=searchpath):
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res = templar.template(template_data, preserve_trailing_newlines=True,
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convert_data=convert_data_p, escape_backslashes=False)
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if C.DEFAULT_JINJA2_NATIVE and not jinja2_native:
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# jinja2_native is true globally but off for the lookup, we need this text
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# not to be processed by literal_eval anywhere in Ansible
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res = NativeJinjaText(res)
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ret.append(res)
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else:
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raise AnsibleError("the template file %s could not be found for the lookup" % term)
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return ret
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