404 lines
14 KiB
Python
404 lines
14 KiB
Python
#
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# (c) 2017 Red Hat Inc.
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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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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author: Ansible Networking Team (@ansible-network)
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name: nxos
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short_description: Use NX-OS cliconf to run commands on Cisco NX-OS platform
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description:
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- This nxos plugin provides low level abstraction apis for sending and receiving CLI
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commands from Cisco NX-OS network devices.
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version_added: 1.0.0
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options:
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config_commands:
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description:
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- Specifies a list of commands that can make configuration changes
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to the target device.
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- When `ansible_network_single_user_mode` is enabled, if a command sent
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to the device is present in this list, the existing cache is invalidated.
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version_added: 2.0.0
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type: list
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elements: str
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default: []
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vars:
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- name: ansible_nxos_config_commands
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"""
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import json
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import re
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from ansible.errors import AnsibleConnectionFailure
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from ansible.module_utils._text import to_bytes, to_text
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from ansible.module_utils.common._collections_compat import Mapping
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from ansible.module_utils.connection import ConnectionError
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from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.config import (
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NetworkConfig,
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dumps,
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)
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from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.utils import (
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to_list,
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)
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from ansible.plugins.cliconf import CliconfBase, enable_mode
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class Cliconf(CliconfBase):
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def __init__(self, *args, **kwargs):
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self._module_context = {}
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self._device_info = {}
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super(Cliconf, self).__init__(*args, **kwargs)
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def read_module_context(self, module_key):
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if self._module_context.get(module_key):
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return self._module_context[module_key]
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return None
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def save_module_context(self, module_key, module_context):
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self._module_context[module_key] = module_context
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return None
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def get_device_info(self):
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if not self._device_info:
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device_info = {}
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device_info["network_os"] = "nxos"
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reply = self.get("show version")
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platform_reply = self.get("show inventory")
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match_sys_ver = re.search(
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r"\s+system:\s+version\s*(\S+)", reply, re.M
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)
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if match_sys_ver:
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device_info["network_os_version"] = match_sys_ver.group(1)
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else:
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match_kick_ver = re.search(
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r"\s+kickstart:\s+version\s*(\S+)", reply, re.M
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)
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if match_kick_ver:
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device_info["network_os_version"] = match_kick_ver.group(1)
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if "network_os_version" not in device_info:
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match_sys_ver = re.search(
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r"\s+NXOS:\s+version\s*(\S+)", reply, re.M
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)
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if match_sys_ver:
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device_info["network_os_version"] = match_sys_ver.group(1)
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match_chassis_id = re.search(
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r"Hardware\n\s+cisco(.+)$", reply, re.M
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)
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if match_chassis_id:
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device_info["network_os_model"] = match_chassis_id.group(
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1
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).strip()
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match_host_name = re.search(
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r"\s+Device name:\s*(\S+)", reply, re.M
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)
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if match_host_name:
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device_info["network_os_hostname"] = match_host_name.group(1)
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match_isan_file_name = re.search(
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r"\s+system image file is:\s*(\S+)", reply, re.M
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)
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if match_isan_file_name:
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device_info["network_os_image"] = match_isan_file_name.group(1)
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else:
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match_kick_file_name = re.search(
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r"\s+kickstart image file is:\s*(\S+)", reply, re.M
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)
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if match_kick_file_name:
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device_info[
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"network_os_image"
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] = match_kick_file_name.group(1)
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if "network_os_image" not in device_info:
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match_isan_file_name = re.search(
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r"\s+NXOS image file is:\s*(\S+)", reply, re.M
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)
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if match_isan_file_name:
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device_info[
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"network_os_image"
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] = match_isan_file_name.group(1)
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match_os_platform = re.search(
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r'NAME: "Chassis",\s*DESCR:.*\n' r"PID:\s*(\S+)",
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platform_reply,
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re.M,
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)
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if match_os_platform:
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device_info["network_os_platform"] = match_os_platform.group(1)
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self._device_info = device_info
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return self._device_info
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def get_diff(
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self,
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candidate=None,
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running=None,
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diff_match="line",
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diff_ignore_lines=None,
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path=None,
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diff_replace="line",
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):
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diff = {}
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device_operations = self.get_device_operations()
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option_values = self.get_option_values()
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if candidate is None and device_operations["supports_generate_diff"]:
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raise ValueError(
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"candidate configuration is required to generate diff"
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)
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if diff_match not in option_values["diff_match"]:
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raise ValueError(
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"'match' value %s in invalid, valid values are %s"
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% (diff_match, ", ".join(option_values["diff_match"]))
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)
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if diff_replace not in option_values["diff_replace"]:
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raise ValueError(
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"'replace' value %s in invalid, valid values are %s"
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% (diff_replace, ", ".join(option_values["diff_replace"]))
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)
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# prepare candidate configuration
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candidate_obj = NetworkConfig(indent=2)
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candidate_obj.load(candidate)
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if running and diff_match != "none" and diff_replace != "config":
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# running configuration
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running_obj = NetworkConfig(
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indent=2, contents=running, ignore_lines=diff_ignore_lines
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)
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configdiffobjs = candidate_obj.difference(
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running_obj, path=path, match=diff_match, replace=diff_replace
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)
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else:
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configdiffobjs = candidate_obj.items
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diff["config_diff"] = (
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dumps(configdiffobjs, "commands") if configdiffobjs else ""
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)
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return diff
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def get_config(self, source="running", format="text", flags=None):
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options_values = self.get_option_values()
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if format not in options_values["format"]:
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raise ValueError(
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"'format' value %s is invalid. Valid values are %s"
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% (format, ",".join(options_values["format"]))
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)
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lookup = {"running": "running-config", "startup": "startup-config"}
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if source not in lookup:
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raise ValueError(
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"fetching configuration from %s is not supported" % source
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)
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cmd = "show {0} ".format(lookup[source])
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if format and format != "text":
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cmd += "| %s " % format
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if flags:
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cmd += " ".join(to_list(flags))
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cmd = cmd.strip()
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return self.send_command(cmd)
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def edit_config(
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self, candidate=None, commit=True, replace=None, comment=None
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):
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resp = {}
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operations = self.get_device_operations()
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self.check_edit_config_capability(
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operations, candidate, commit, replace, comment
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)
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results = []
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requests = []
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if replace:
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device_info = self.get_device_info()
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# not all NX-OS versions support `config replace`
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# we let the device throw the invalid command error
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candidate = "config replace {0}".format(replace)
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if commit:
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self.send_command("configure terminal")
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for line in to_list(candidate):
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if not isinstance(line, Mapping):
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line = {"command": line}
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cmd = line["command"]
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if cmd != "end":
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results.append(self.send_command(**line))
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requests.append(cmd)
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self.send_command("end")
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else:
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raise ValueError("check mode is not supported")
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resp["request"] = requests
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resp["response"] = results
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return resp
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def get(
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self,
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command,
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prompt=None,
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answer=None,
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sendonly=False,
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output=None,
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newline=True,
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check_all=False,
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):
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if output:
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command = self._get_command_with_output(command, output)
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return self.send_command(
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command=command,
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prompt=prompt,
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answer=answer,
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sendonly=sendonly,
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newline=newline,
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check_all=check_all,
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)
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def run_commands(self, commands=None, check_rc=True):
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if commands is None:
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raise ValueError("'commands' value is required")
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responses = list()
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for cmd in to_list(commands):
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if not isinstance(cmd, Mapping):
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cmd = {"command": cmd}
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output = cmd.pop("output", None)
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if output:
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cmd["command"] = self._get_command_with_output(
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cmd["command"], output
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)
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try:
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out = self.send_command(**cmd)
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except AnsibleConnectionFailure as e:
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if check_rc is True:
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raise
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out = getattr(e, "err", e)
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if out is not None:
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try:
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out = to_text(out, errors="surrogate_or_strict").strip()
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except UnicodeError:
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raise ConnectionError(
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message="Failed to decode output from %s: %s"
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% (cmd, to_text(out))
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)
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try:
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out = json.loads(out)
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except ValueError:
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pass
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responses.append(out)
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return responses
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def get_device_operations(self):
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return {
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"supports_diff_replace": True,
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"supports_commit": False,
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"supports_rollback": False,
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"supports_defaults": True,
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"supports_onbox_diff": False,
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"supports_commit_comment": False,
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"supports_multiline_delimiter": False,
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"supports_diff_match": True,
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"supports_diff_ignore_lines": True,
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"supports_generate_diff": True,
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"supports_replace": True,
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}
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def get_option_values(self):
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return {
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"format": ["text", "json"],
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"diff_match": ["line", "strict", "exact", "none"],
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"diff_replace": ["line", "block", "config"],
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"output": ["text", "json"],
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}
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def get_capabilities(self):
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result = super(Cliconf, self).get_capabilities()
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result["rpc"] += ["get_diff", "run_commands"]
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result["device_operations"] = self.get_device_operations()
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result.update(self.get_option_values())
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return json.dumps(result)
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def set_cli_prompt_context(self):
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"""
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Make sure we are in the operational cli context
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:return: None
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"""
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if self._connection.connected:
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out = self._connection.get_prompt()
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if out is None:
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raise AnsibleConnectionFailure(
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message="cli prompt is not identified from the last received"
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" response window: %s" % self._connection._last_recv_window
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)
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# Match prompts ending in )# except those with (maint-mode)#
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config_prompt = re.compile(r"^.*\((?!maint-mode).*\)#$")
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while config_prompt.match(
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to_text(out, errors="surrogate_then_replace").strip()
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):
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self._connection.queue_message(
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"vvvv", "wrong context, sending exit to device"
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)
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self._connection.send_command("exit")
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out = self._connection.get_prompt()
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def _get_command_with_output(self, command, output):
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options_values = self.get_option_values()
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if output not in options_values["output"]:
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raise ValueError(
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"'output' value %s is invalid. Valid values are %s"
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% (output, ",".join(options_values["output"]))
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)
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if output == "json" and not command.endswith("| json"):
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device_info = self.get_device_info()
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model = device_info.get("network_os_model", "")
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platform = device_info.get("network_os_platform", "")
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if platform.startswith("DS-") and "MDS" in model:
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cmd = "%s | json native" % command
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else:
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cmd = "%s | json" % command
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elif output == "text" and command.endswith("| json"):
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cmd = command.rsplit("|", 1)[0]
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else:
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cmd = command
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return cmd
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