608 lines
19 KiB
Python
608 lines
19 KiB
Python
# -*- coding: utf-8 -*-
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import os
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import logging
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from dataclasses import dataclass
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from typing import Any, Union
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from copy import deepcopy
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import yaml
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from diskcache import Cache
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from ansible.errors import AnsibleError, AnsibleUndefinedVariable
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from ansible.module_utils.common.text.converters import to_native
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from ansible.utils.display import Display
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from ansible.template import (
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generate_ansible_template_vars,
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AnsibleEnvironment,
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USE_JINJA2_NATIVE,
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)
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from kheops.app import Kheops
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DOCUMENTATION_OPTION_FRAGMENT = """
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# Plugin configuration
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# ==========================
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config:
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description:
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- Path to Kheops configuration yaml file
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- Can be useful to reuse and merge existing configurations
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- All settings of the target files can be overriden from this file
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- Ignored if blank or Null
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default: Null
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ini:
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- section: inventory
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key: kheops_config
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env:
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- name: ANSIBLE_KHEOPS_CONFIG
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# Query configuration
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# ==========================
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namespace:
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description:
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- The Kheops namespace to use
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default: 'default'
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env:
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- name: ANSIBLE_KHEOPS_DEFAULT_NAMESPACE
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scope:
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description:
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- A hash containing the scope to use for the request, the values will be resolved as Ansible facts.
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- Use a dot notation to dig deeper into nested hash facts.
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default:
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node: inventory_hostname
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groups: group_names
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keys:
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description:
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- A list of keys to lookup
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default: Null
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# Behavior configuration
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# ==========================
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process_scope:
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description:
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- This setting defines how is parsed the `scope` configuration
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- Set `vars` to enable simple variable interpolation
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- Set `jinja` to enable jinja string interpolation
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default: 'jinja'
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choices: ['vars', 'jinja']
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process_results:
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description:
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- This setting defines how is parsed the returned results.
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- Set `none` to disable jinja interpolation from result.
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- Set `jinja` to enable jinja result interpolation.
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- Using jinja may pose some security issues, as you need to be sure that your source of data is properly secured.
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default: 'none'
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choices: ['none', 'jinja']
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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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type: bool
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env:
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- name: ANSIBLE_JINJA2_NATIVE
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notes:
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- Kheops documentation is available on http://kheops.io/
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- You can add more parameters as documented in http://kheops.io/server/api
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# Backend configuration (Direct/Client)
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# ==========================
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mode:
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description:
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- Choose `client` to use a remote Khéops instance (Not implemented yet)
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- Choose `instance` to use a Khéops directly
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default: 'instance'
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choices: ['instance']
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env:
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- name: ANSIBLE_KHEOPS_MODE
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# Instance configuration (Direct)
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# ==========================
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# Instance configuration
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instance_config:
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description:
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- The Kheops configuration file to use.
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- Require mode=instance
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default: 'site/kheops.yml'
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env:
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- name: ANSIBLE_KHEOPS_INSTANCE_CONFIG
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instance_namespace:
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description:
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- The Kheops configuration file to use.
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- Require mode=instance
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default: 'default'
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env:
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- name: ANSIBLE_KHEOPS_INSTANCE_NAMESPACE
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instance_log_level:
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description:
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- Khéops logging level
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- Require mode=instance
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choices: ['DEBUG', 'INFO', 'WARNING', 'ERROR']
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default: 'WARNING'
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env:
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- name: ANSIBLE_KHEOPS_INSTANCE_LOG_LEVEL
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instance_explain:
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description:
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- Khéops logging explain
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- Require mode=instance
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type: boolean
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default: False
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env:
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- name: ANSIBLE_KHEOPS_INSTANCE_EXPLAIN
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# Instance configuration (Client)
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# ==========================
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# turfu # Client configuration
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# turfu client_token:
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# turfu description:
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# turfu - The Kheops token to use to authenticate against Kheops server.
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# turfu default: ''
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# turfu env:
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# turfu - name: ANSIBLE_KHEOPS_TOKEN
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# turfu client_host:
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# turfu description:
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# turfu - Hostname of the Kheops Server.
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# turfu default: '127.0.0.1'
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# turfu env:
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# turfu - name: ANSIBLE_KHEOPS_HOST
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# turfu client_port:
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# turfu description:
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# turfu - Kheops port to connect to.
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# turfu default: '9843'
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# turfu env:
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# turfu - name: ANSIBLE_KHEOPS_PORT
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# turfu client_protocol:
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# turfu description:
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# turfu - The URL protocol to use.
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# turfu default: 'http'
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# turfu choices: ['http', 'https']
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# turfu env:
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# turfu - name: ANSIBLE_KHEOPS_PROTOCOL
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# turfu client_validate_certs:
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# turfu description:
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# turfu - Whether or not to verify the TLS certificates of the Kheops server.
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# turfu type: boolean
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# turfu default: False
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# turfu env:
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# turfu - name: ANSIBLE_KHEOPS_VALIDATE_CERTS
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"""
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KEY_NS_SEP = "/"
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if USE_JINJA2_NATIVE:
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from ansible.utils.native_jinja import NativeJinjaText
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KHEOPS_CACHE=Cache("/tmp/ansible_kheops_cache/")
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KHEOPS_CACHE.clear()
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class Key():
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"""Key instance class"""
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default_config = {
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"key": None,
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"remap": None,
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"scope": {},
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"namespace": None,
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"namespace_prefix": False,
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"explain": False,
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"trace": False,
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}
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def __init__(self, config):
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self._config = self.parse_config(config)
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# Create all attributes
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for key, value in self._config.items():
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setattr(self, key, value)
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def parse_config(self, key_def):
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"""
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Parse a key configuration and return an object
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A key configuration can either be:
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- a string: for quick queries
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- a dict: for full control, that can be extended later for more options
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String configuration:
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- <KEY>
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- <NAMESPACE>:<KEY>
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- <NAMESPACE>:<KEY>:<REMAP>
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Dict configuration:
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- key: key to query
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- namespace: namespace to query
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- remap: rename key to ansible variable
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"""
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ret = dict(self.default_config)
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if isinstance(key_def, dict):
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ret.update(key_def)
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elif isinstance(key_def, str):
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key = None
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remap = key
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namespace = self.default_namespace
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# Extract config from string
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parts = key_def.split(KEY_NS_SEP, 3)
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if len(parts) == 1:
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key = parts[0]
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elif len(parts) > 1:
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namespace = parts[0]
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key = parts[1]
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if len(parts) == 3:
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remap = parts[2]
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# Generate new config
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string_conf = {
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"key": key,
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"namespace": namespace,
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"remap": remap,
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}
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ret.update(string_conf)
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else:
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raise Exception(f"Key configuration is invalid, expected a string or dict, got: {key_def}")
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return ret
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def show(self):
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"""Method to show the accepatable string format for Kheops"""
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ret = self.key
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if self.namespace is not None:
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ret = f"{self.namespace}{KEY_NS_SEP}{ret}"
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return ret
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class Keys():
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"""Keys config instance class"""
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def __init__(self, config, default_namespace="default"):
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self.raw_config = config
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self.default_namespace = default_namespace
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self.key_list = self.parse_config(config)
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def parse_config(self, keys_def, default_namespace="default"):
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"""Parse a key config structure
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A keydef can either be:
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- a string: Single lookup
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- a list: ordered lookup
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- a dict: unordered lookup
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"""
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ret = []
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if isinstance(keys_def, list):
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for key_def in keys_def:
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ret.append(Key(key_def))
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elif isinstance(keys_def, str):
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ret.append(Key(keys_def))
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elif isinstance(keys_def, dict):
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for key, value in keys_def.items():
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if isinstance(value, str):
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key_def = value or key
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if isinstance(value, dict):
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key_def = value or {}
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key_def['key'] = key_def.get('key', key)
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ret.append(Key(key_def))
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else:
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raise AnsibleError(f"Unable to process Kheops keys: {ret}")
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if len(ret) == 0:
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raise AnsibleError(f"Kheops query needs at least one key to lookup")
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return ret
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class AnsibleKheops:
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"""Main Ansible Kheops Class"""
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# Extract default config from documentation
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default_config = {
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key: value.get("default", None)
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for key, value in yaml.safe_load(
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DOCUMENTATION_OPTION_FRAGMENT).items()
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}
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# Kheops instance management
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# ----------------------------
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def __init__(self, configs=None, display=None):
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self.display = display or Display()
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configs = configs or []
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self.config = self.parse_configs(configs)
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self.display.v("Kheops instance has been created, with config: %s" % self.config['instance_config'])
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# Instanciate Kheops
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if self.config["mode"] == "instance":
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# Configure logging
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logger = logging.getLogger("kheops")
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logger.setLevel(self.config["instance_log_level"])
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# See for logging: https://medium.com/opsops/debugging-requests-1989797736cc
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#class ListLoggerHandler(logging.Handler):
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# def emit(self, record):
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# msg = self.format(record)
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main_logger = logging.getLogger()
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#main_logger.addHandler(ListLoggerHandler())
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main_logger.setLevel(logging.DEBUG)
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# Start instance
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self.kheops = Kheops(
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config=self.config["instance_config"],
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namespace=self.config["instance_namespace"],
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cache=KHEOPS_CACHE
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)
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elif self.config["mode"] == "client":
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raise AnsibleError("Kheops client mode is not implemented")
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def parse_configs(self, configs):
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"""
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Take a list of config items that will be merged together.
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A config item can either be:
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- A string: Represents the path of the config
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- A dict: Represent a direct configuration
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- None: Just ignore this entry
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#Processing order:
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#- Fetch the value of config or fallback on ANSIBLE_KHEOPS_CONFIG
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#- Load the config if any
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#- Overrides with other options
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"""
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# Get default configuration from environment
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env_items = [
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# We exclude 'config' on purpose
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"mode",
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"default_namespace",
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"instance_config",
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"instance_namespace",
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"instance_log_level",
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"instance_log_explain",
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# Future:
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# "token",
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# "host",
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# "port",
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# "protocol",
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# "validate_certs",
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]
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env_config = {}
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for item in env_items:
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envvar = "ANSIBLE_KHEOPS_" + item.upper()
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try:
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env_config[item] = os.environ[envvar]
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except KeyError:
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pass
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# Merge/process runtime configurations
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merged_configs = {}
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for config in configs:
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conf_data = None
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if isinstance(config, str):
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self.display.vv("Read Kheops file config %s" % config)
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if os.path.isfile(config):
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data = open(config, "r", encoding="utf-8")
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conf_data = yaml.safe_load(data)
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else:
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raise AnsibleError(f"Unable to find configuration file {config}")
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elif isinstance(config, dict):
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self.display.vv("Read Kheops direct config %s" % config)
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conf_data = config
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elif isinstance(config, type(None)):
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continue
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else:
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assert False, f"Bad config for, expected a path or a dict, got type {type(config)}: {config}"
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assert isinstance(conf_data, dict), f"Bug with conf_data: {conf_data}"
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if isinstance(conf_data, dict):
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merged_configs.update(conf_data)
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# Merge results
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combined_config = dict(self.default_config)
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combined_config.update(env_config)
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combined_config.update(merged_configs)
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return combined_config
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# Lookup methods
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# ----------------------------
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def super_lookup_seq(
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self,
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keys,
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scope_config=None,
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scope_vars=None,
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namespace=None,
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kwargs=None,
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_templar=None,
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_process_scope=None,
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_process_results=None,
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jinja2_native=False,
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):
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"""
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Sequential Lookup method wrapper
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"""
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# Determine runtime options
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_process_scope = _process_scope if _process_scope in ["vars", "jinja"] else self.config["process_scope"]
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_process_results = _process_results if isinstance(_process_results, bool ) else self.config["process_results"]
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_reinject_results = True
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# Build query context
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namespace = namespace or self.config.get('default_namespace')
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scope_config = scope_config or self.config.get('scope')
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keys = keys or self.config.get('keys', [])
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keys_config = Keys(keys, default_namespace=namespace)
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scope_final = self.get_scope(
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_process_scope,
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scope_vars, scope_config,
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_templar=_templar, jinja2_native=jinja2_native
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)
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# Query kheops
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result = []
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ret = {}
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for key in keys_config.key_list:
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if _reinject_results:
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scope_vars.update(dict(ret))
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scope_final = self.get_scope(
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_process_scope,
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scope_vars, scope_config,
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_templar=_templar, jinja2_native=jinja2_native
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)
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# Query kheops
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ret = self.kheops.lookup(
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keys=[key.show()],
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scope=scope_final,
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trace=key.trace,
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explain=key.explain,
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namespace_prefix=key.namespace_prefix
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)
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# Remap output
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if key.remap is not None and key.remap != key.key:
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#print (f"REMAP KEY: {key.key} => {key.remap}")
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ret[key.remap] = ret[key.key]
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del ret[key.key]
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# Process output
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if _process_results == "jinja":
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with _templar.set_temporary_context(available_variables=scope_vars):
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ret = _templar.template(
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ret,
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preserve_trailing_newlines=True,
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convert_data=False,
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escape_backslashes=False,
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)
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if USE_JINJA2_NATIVE and not jinja2_native:
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ret = NativeJinjaText(ret)
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result.append(ret)
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return result
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# Scope management methods
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# ----------------------------
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def get_scope(self, method, scope_vars, scope_config, _templar=None, jinja2_native=False):
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"""
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Simple wrapper for _get_scope_template and _get_scope_vars
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"""
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ret = {}
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if method == "jinja":
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ret = self._get_scope_template(scope_vars, scope_config,
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_templar, jinja2_native=jinja2_native)
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elif method == "vars":
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ret = self._get_scope_vars(scope_vars, scope_config)
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elif method == "all":
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ret = scope_vars
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else:
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raise AnsibleError(f"Get_scope only accept 'jinja','vars' or 'all', got: {method}")
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#print ("===> Scope Config:", method)
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#print (scope_config)
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#print ("===> Scope Vars:", scope_vars.get('tiger_profiles', 'MISSING_PROFILE'))
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#print (scope_vars.keys())
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#print ("===> Scope Result:")
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#print (ret)
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#print ("===> Scope EOF")
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return dict(ret)
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def _get_scope_template(self, data, scope_config, templar, jinja2_native=False):
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"""
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Create a scope context from data, jinja2 interpolation
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"""
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scope_config = scope_config or self.config.get('scope', {})
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assert isinstance(data, dict)
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assert templar
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if USE_JINJA2_NATIVE and not jinja2_native:
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_templar = templar.copy_with_new_env(environment_class=AnsibleEnvironment)
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else:
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_templar = templar
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# Process template with jinja
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_vars = dict(data)
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ret = {}
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with _templar.set_temporary_context(available_variables=_vars):
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try:
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ret = _templar.template(
|
|
scope_config,
|
|
preserve_trailing_newlines=True,
|
|
convert_data=True,
|
|
escape_backslashes=False,
|
|
)
|
|
if USE_JINJA2_NATIVE and not jinja2_native:
|
|
# jinja2_native is true globally but off for the lookup, we need this text
|
|
# not to be processed by literal_eval anywhere in Ansible
|
|
ret = NativeJinjaText(ret)
|
|
self.display.vvv(f"Transformed scope value: {scope_config} => {ret}")
|
|
|
|
except AnsibleUndefinedVariable as err:
|
|
self.display.error(f"Got templating error for string '{scope_config}': {err}")
|
|
raise err
|
|
|
|
return ret
|
|
|
|
|
|
def _get_scope_vars(self, data, scope_config):
|
|
"""
|
|
Create a scope context from data, simple interpolation
|
|
"""
|
|
|
|
scope_config = scope_config or self.config.get('scope', {})
|
|
assert isinstance(data, dict)
|
|
|
|
ret = {}
|
|
for key, val in scope_config.items():
|
|
ret[key] = data.get(val, None)
|
|
|
|
return ret
|
|
|