mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-09-10 01:03:07 +02:00
437 lines
20 KiB
Python
437 lines
20 KiB
Python
![]() |
#
|
||
|
# (c) 2017 Red Hat Inc.
|
||
|
#
|
||
|
# 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
|
||
|
|
||
|
from abc import abstractmethod
|
||
|
from functools import wraps
|
||
|
|
||
|
from ansible.plugins import AnsiblePlugin
|
||
|
from ansible.errors import AnsibleError, AnsibleConnectionFailure
|
||
|
from ansible.module_utils._text import to_bytes, to_text
|
||
|
|
||
|
|
||
|
try:
|
||
|
from scp import SCPClient
|
||
|
HAS_SCP = True
|
||
|
except ImportError:
|
||
|
HAS_SCP = False
|
||
|
|
||
|
try:
|
||
|
from __main__ import display
|
||
|
except ImportError:
|
||
|
from ansible.utils.display import Display
|
||
|
display = Display()
|
||
|
|
||
|
|
||
|
def enable_mode(func):
|
||
|
@wraps(func)
|
||
|
def wrapped(self, *args, **kwargs):
|
||
|
prompt = self._connection.get_prompt()
|
||
|
if not to_text(prompt, errors='surrogate_or_strict').strip().endswith('#'):
|
||
|
raise AnsibleError('operation requires privilege escalation')
|
||
|
return func(self, *args, **kwargs)
|
||
|
return wrapped
|
||
|
|
||
|
|
||
|
class CliconfBase(AnsiblePlugin):
|
||
|
"""
|
||
|
A base class for implementing cli connections
|
||
|
|
||
|
.. note:: String inputs to :meth:`send_command` will be cast to byte strings
|
||
|
within this method and as such are not required to be made byte strings
|
||
|
beforehand. Please avoid using literal byte strings (``b'string'``) in
|
||
|
:class:`CliConfBase` plugins as this can lead to unexpected errors when
|
||
|
running on Python 3
|
||
|
|
||
|
List of supported rpc's:
|
||
|
:get_config: Retrieves the specified configuration from the device
|
||
|
:edit_config: Loads the specified commands into the remote device
|
||
|
:get: Execute specified command on remote device
|
||
|
:get_capabilities: Retrieves device information and supported rpc methods
|
||
|
:commit: Load configuration from candidate to running
|
||
|
:discard_changes: Discard changes to candidate datastore
|
||
|
|
||
|
Note: List of supported rpc's for remote device can be extracted from
|
||
|
output of get_capabilities()
|
||
|
|
||
|
:returns: Returns output received from remote device as byte string
|
||
|
|
||
|
Usage:
|
||
|
from ansible.module_utils.connection import Connection
|
||
|
|
||
|
conn = Connection()
|
||
|
conn.get('show lldp neighbors detail'')
|
||
|
conn.get_config('running')
|
||
|
conn.edit_config(['hostname test', 'netconf ssh'])
|
||
|
"""
|
||
|
|
||
|
__rpc__ = ['get_config', 'edit_config', 'get_capabilities', 'get', 'enable_response_logging', 'disable_response_logging']
|
||
|
|
||
|
def __init__(self, connection):
|
||
|
super(CliconfBase, self).__init__()
|
||
|
self._connection = connection
|
||
|
self.history = list()
|
||
|
self.response_logging = False
|
||
|
|
||
|
def _alarm_handler(self, signum, frame):
|
||
|
"""Alarm handler raised in case of command timeout """
|
||
|
display.display('closing shell due to command timeout (%s seconds).' % self._connection._play_context.timeout, log_only=True)
|
||
|
self.close()
|
||
|
|
||
|
def send_command(self, command=None, prompt=None, answer=None, sendonly=False, newline=True, prompt_retry_check=False, check_all=False):
|
||
|
"""Executes a command over the device connection
|
||
|
|
||
|
This method will execute a command over the device connection and
|
||
|
return the results to the caller. This method will also perform
|
||
|
logging of any commands based on the `nolog` argument.
|
||
|
|
||
|
:param command: The command to send over the connection to the device
|
||
|
:param prompt: A single regex pattern or a sequence of patterns to evaluate the expected prompt from the command
|
||
|
:param answer: The answer to respond with if the prompt is matched.
|
||
|
:param sendonly: Bool value that will send the command but not wait for a result.
|
||
|
:param newline: Bool value that will append the newline character to the command
|
||
|
:param prompt_retry_check: Bool value for trying to detect more prompts
|
||
|
:param check_all: Bool value to indicate if all the values in prompt sequence should be matched or any one of
|
||
|
given prompt.
|
||
|
:returns: The output from the device after executing the command
|
||
|
"""
|
||
|
kwargs = {
|
||
|
'command': to_bytes(command),
|
||
|
'sendonly': sendonly,
|
||
|
'newline': newline,
|
||
|
'prompt_retry_check': prompt_retry_check,
|
||
|
'check_all': check_all
|
||
|
}
|
||
|
|
||
|
if prompt is not None:
|
||
|
if isinstance(prompt, list):
|
||
|
kwargs['prompt'] = [to_bytes(p) for p in prompt]
|
||
|
else:
|
||
|
kwargs['prompt'] = to_bytes(prompt)
|
||
|
if answer is not None:
|
||
|
if isinstance(answer, list):
|
||
|
kwargs['answer'] = [to_bytes(p) for p in answer]
|
||
|
else:
|
||
|
kwargs['answer'] = to_bytes(answer)
|
||
|
|
||
|
resp = self._connection.send(**kwargs)
|
||
|
|
||
|
if not self.response_logging:
|
||
|
self.history.append(('*****', '*****'))
|
||
|
else:
|
||
|
self.history.append((kwargs['command'], resp))
|
||
|
|
||
|
return resp
|
||
|
|
||
|
def get_base_rpc(self):
|
||
|
"""Returns list of base rpc method supported by remote device"""
|
||
|
return self.__rpc__
|
||
|
|
||
|
def get_history(self):
|
||
|
""" Returns the history file for all commands
|
||
|
|
||
|
This will return a log of all the commands that have been sent to
|
||
|
the device and all of the output received. By default, all commands
|
||
|
and output will be redacted unless explicitly configured otherwise.
|
||
|
|
||
|
:return: An ordered list of command, output pairs
|
||
|
"""
|
||
|
return self.history
|
||
|
|
||
|
def reset_history(self):
|
||
|
""" Resets the history of run commands
|
||
|
:return: None
|
||
|
"""
|
||
|
self.history = list()
|
||
|
|
||
|
def enable_response_logging(self):
|
||
|
"""Enable logging command response"""
|
||
|
self.response_logging = True
|
||
|
|
||
|
def disable_response_logging(self):
|
||
|
"""Disable logging command response"""
|
||
|
self.response_logging = False
|
||
|
|
||
|
@abstractmethod
|
||
|
def get_config(self, source='running', flags=None, format=None):
|
||
|
"""Retrieves the specified configuration from the device
|
||
|
|
||
|
This method will retrieve the configuration specified by source and
|
||
|
return it to the caller as a string. Subsequent calls to this method
|
||
|
will retrieve a new configuration from the device
|
||
|
|
||
|
:param source: The configuration source to return from the device.
|
||
|
This argument accepts either `running` or `startup` as valid values.
|
||
|
|
||
|
:param flags: For devices that support configuration filtering, this
|
||
|
keyword argument is used to filter the returned configuration.
|
||
|
The use of this keyword argument is device dependent adn will be
|
||
|
silently ignored on devices that do not support it.
|
||
|
|
||
|
:param format: For devices that support fetching different configuration
|
||
|
format, this keyword argument is used to specify the format in which
|
||
|
configuration is to be retrieved.
|
||
|
|
||
|
:return: The device configuration as specified by the source argument.
|
||
|
"""
|
||
|
pass
|
||
|
|
||
|
@abstractmethod
|
||
|
def edit_config(self, candidate=None, commit=True, replace=None, diff=False, comment=None):
|
||
|
"""Loads the candidate configuration into the network device
|
||
|
|
||
|
This method will load the specified candidate config into the device
|
||
|
and merge with the current configuration unless replace is set to
|
||
|
True. If the device does not support config replace an errors
|
||
|
is returned.
|
||
|
|
||
|
:param candidate: The configuration to load into the device and merge
|
||
|
with the current running configuration
|
||
|
|
||
|
:param commit: Boolean value that indicates if the device candidate
|
||
|
configuration should be pushed in the running configuration or discarded.
|
||
|
|
||
|
:param replace: If the value is True/False it indicates if running configuration should be completely
|
||
|
replace by candidate configuration. If can also take configuration file path as value,
|
||
|
the file in this case should be present on the remote host in the mentioned path as a
|
||
|
prerequisite.
|
||
|
:param comment: Commit comment provided it is supported by remote host
|
||
|
:return: Returns a json string with contains configuration applied on remote host, the returned
|
||
|
response on executing configuration commands and platform relevant data.
|
||
|
{
|
||
|
"diff": "",
|
||
|
"response": [],
|
||
|
"request": []
|
||
|
}
|
||
|
|
||
|
"""
|
||
|
pass
|
||
|
|
||
|
@abstractmethod
|
||
|
def get(self, command=None, prompt=None, answer=None, sendonly=False, newline=True, output=None, check_all=False):
|
||
|
"""Execute specified command on remote device
|
||
|
This method will retrieve the specified data and
|
||
|
return it to the caller as a string.
|
||
|
:param command: command in string format to be executed on remote device
|
||
|
:param prompt: the expected prompt generated by executing command, this can
|
||
|
be a string or a list of strings
|
||
|
:param answer: the string to respond to the prompt with
|
||
|
:param sendonly: bool to disable waiting for response, default is false
|
||
|
:param newline: bool to indicate if newline should be added at end of answer or not
|
||
|
:param output: For devices that support fetching command output in different
|
||
|
format, this keyword argument is used to specify the output in which
|
||
|
response is to be retrieved.
|
||
|
:param check_all: Bool value to indicate if all the values in prompt sequence should be matched or any one of
|
||
|
given prompt.
|
||
|
:return: The output from the device after executing the command
|
||
|
"""
|
||
|
pass
|
||
|
|
||
|
@abstractmethod
|
||
|
def get_capabilities(self):
|
||
|
"""Returns the basic capabilities of the network device
|
||
|
This method will provide some basic facts about the device and
|
||
|
what capabilities it has to modify the configuration. The minimum
|
||
|
return from this method takes the following format.
|
||
|
eg:
|
||
|
{
|
||
|
|
||
|
'rpc': [list of supported rpcs],
|
||
|
'network_api': <str>, # the name of the transport
|
||
|
'device_info': {
|
||
|
'network_os': <str>,
|
||
|
'network_os_version': <str>,
|
||
|
'network_os_model': <str>,
|
||
|
'network_os_hostname': <str>,
|
||
|
'network_os_image': <str>,
|
||
|
'network_os_platform': <str>,
|
||
|
},
|
||
|
'device_operations': {
|
||
|
'supports_diff_replace': <bool>, # identify if config should be merged or replaced is supported
|
||
|
'supports_commit': <bool>, # identify if commit is supported by device or not
|
||
|
'supports_rollback': <bool>, # identify if rollback is supported or not
|
||
|
'supports_defaults': <bool>, # identify if fetching running config with default is supported
|
||
|
'supports_commit_comment': <bool>, # identify if adding comment to commit is supported of not
|
||
|
'supports_onbox_diff: <bool>, # identify if on box diff capability is supported or not
|
||
|
'supports_generate_diff: <bool>, # identify if diff capability is supported within plugin
|
||
|
'supports_multiline_delimiter: <bool>, # identify if multiline demiliter is supported within config
|
||
|
'supports_diff_match: <bool>, # identify if match is supported
|
||
|
'supports_diff_ignore_lines: <bool>, # identify if ignore line in diff is supported
|
||
|
'supports_config_replace': <bool>, # identify if running config replace with candidate config is supported
|
||
|
'supports_admin': <bool>, # identify if admin configure mode is supported or not
|
||
|
'supports_commit_label': <bool>, # identify if commit label is supported or not
|
||
|
}
|
||
|
'format': [list of supported configuration format],
|
||
|
'diff_match': [list of supported match values],
|
||
|
'diff_replace': [list of supported replace values],
|
||
|
'output': [list of supported command output format]
|
||
|
}
|
||
|
:return: capability as json string
|
||
|
"""
|
||
|
pass
|
||
|
|
||
|
def commit(self, comment=None):
|
||
|
"""Commit configuration changes
|
||
|
|
||
|
This method will perform the commit operation on a previously loaded
|
||
|
candidate configuration that was loaded using `edit_config()`. If
|
||
|
there is a candidate configuration, it will be committed to the
|
||
|
active configuration. If there is not a candidate configuration, this
|
||
|
method should just silently return.
|
||
|
|
||
|
:return: None
|
||
|
"""
|
||
|
return self._connection.method_not_found("commit is not supported by network_os %s" % self._play_context.network_os)
|
||
|
|
||
|
def discard_changes(self):
|
||
|
"""Discard candidate configuration
|
||
|
|
||
|
This method will discard the current candidate configuration if one
|
||
|
is present. If there is no candidate configuration currently loaded,
|
||
|
then this method should just silently return
|
||
|
|
||
|
:returns: None
|
||
|
"""
|
||
|
return self._connection.method_not_found("discard_changes is not supported by network_os %s" % self._play_context.network_os)
|
||
|
|
||
|
def rollback(self, rollback_id, commit=True):
|
||
|
"""
|
||
|
|
||
|
:param rollback_id: The commit id to which configuration should be rollbacked
|
||
|
:param commit: Flag to indicate if changes should be committed or not
|
||
|
:return: Returns diff between before and after change.
|
||
|
"""
|
||
|
pass
|
||
|
|
||
|
def copy_file(self, source=None, destination=None, proto='scp', timeout=30):
|
||
|
"""Copies file over scp/sftp to remote device
|
||
|
|
||
|
:param source: Source file path
|
||
|
:param destination: Destination file path on remote device
|
||
|
:param proto: Protocol to be used for file transfer,
|
||
|
supported protocol: scp and sftp
|
||
|
:param timeout: Specifies the wait time to receive response from
|
||
|
remote host before triggering timeout exception
|
||
|
:return: None
|
||
|
"""
|
||
|
ssh = self._connection.paramiko_conn._connect_uncached()
|
||
|
if proto == 'scp':
|
||
|
if not HAS_SCP:
|
||
|
raise AnsibleError("Required library scp is not installed. Please install it using `pip install scp`")
|
||
|
with SCPClient(ssh.get_transport(), socket_timeout=timeout) as scp:
|
||
|
out = scp.put(source, destination)
|
||
|
elif proto == 'sftp':
|
||
|
with ssh.open_sftp() as sftp:
|
||
|
sftp.put(source, destination)
|
||
|
|
||
|
def get_file(self, source=None, destination=None, proto='scp', timeout=30):
|
||
|
"""Fetch file over scp/sftp from remote device
|
||
|
:param source: Source file path
|
||
|
:param destination: Destination file path
|
||
|
:param proto: Protocol to be used for file transfer,
|
||
|
supported protocol: scp and sftp
|
||
|
:param timeout: Specifies the wait time to receive response from
|
||
|
remote host before triggering timeout exception
|
||
|
:return: None
|
||
|
"""
|
||
|
"""Fetch file over scp/sftp from remote device"""
|
||
|
ssh = self._connection.paramiko_conn._connect_uncached()
|
||
|
if proto == 'scp':
|
||
|
if not HAS_SCP:
|
||
|
raise AnsibleError("Required library scp is not installed. Please install it using `pip install scp`")
|
||
|
with SCPClient(ssh.get_transport(), socket_timeout=timeout) as scp:
|
||
|
scp.get(source, destination)
|
||
|
elif proto == 'sftp':
|
||
|
with ssh.open_sftp() as sftp:
|
||
|
sftp.get(source, destination)
|
||
|
|
||
|
def get_diff(self, candidate=None, running=None, diff_match=None, diff_ignore_lines=None, path=None, diff_replace=None):
|
||
|
"""
|
||
|
Generate diff between candidate and running configuration. If the
|
||
|
remote host supports onbox diff capabilities ie. supports_onbox_diff in that case
|
||
|
candidate and running configurations are not required to be passed as argument.
|
||
|
In case if onbox diff capability is not supported candidate argument is mandatory
|
||
|
and running argument is optional.
|
||
|
:param candidate: The configuration which is expected to be present on remote host.
|
||
|
:param running: The base configuration which is used to generate diff.
|
||
|
:param diff_match: Instructs how to match the candidate configuration with current device configuration
|
||
|
Valid values are 'line', 'strict', 'exact', 'none'.
|
||
|
'line' - commands are matched line by line
|
||
|
'strict' - command lines are matched with respect to position
|
||
|
'exact' - command lines must be an equal match
|
||
|
'none' - will not compare the candidate configuration with the running configuration
|
||
|
:param diff_ignore_lines: Use this argument to specify one or more lines that should be
|
||
|
ignored during the diff. This is used for lines in the configuration
|
||
|
that are automatically updated by the system. This argument takes
|
||
|
a list of regular expressions or exact line matches.
|
||
|
:param path: The ordered set of parents that uniquely identify the section or hierarchy
|
||
|
the commands should be checked against. If the parents argument
|
||
|
is omitted, the commands are checked against the set of top
|
||
|
level or global commands.
|
||
|
:param diff_replace: Instructs on the way to perform the configuration on the device.
|
||
|
If the replace argument is set to I(line) then the modified lines are
|
||
|
pushed to the device in configuration mode. If the replace argument is
|
||
|
set to I(block) then the entire command block is pushed to the device in
|
||
|
configuration mode if any line is not correct.
|
||
|
:return: Configuration and/or banner diff in json format.
|
||
|
{
|
||
|
'config_diff': ''
|
||
|
}
|
||
|
|
||
|
"""
|
||
|
pass
|
||
|
|
||
|
def run_commands(self, commands=None, check_rc=True):
|
||
|
"""
|
||
|
Execute a list of commands on remote host and return the list of response
|
||
|
:param commands: The list of command that needs to be executed on remote host.
|
||
|
The individual command in list can either be a command string or command dict.
|
||
|
If the command is dict the valid keys are
|
||
|
{
|
||
|
'command': <command to be executed>
|
||
|
'prompt': <expected prompt on executing the command>,
|
||
|
'answer': <answer for the prompt>,
|
||
|
'output': <the format in which command output should be rendered eg: 'json', 'text'>,
|
||
|
'sendonly': <Boolean flag to indicate if it command execution response should be ignored or not>
|
||
|
}
|
||
|
:param check_rc: Boolean flag to check if returned response should be checked for error or not.
|
||
|
If check_rc is False the error output is appended in return response list, else if the
|
||
|
value is True an exception is raised.
|
||
|
:return: List of returned response
|
||
|
"""
|
||
|
pass
|
||
|
|
||
|
def check_edit_config_capability(self, operations, candidate=None, commit=True, replace=None, comment=None):
|
||
|
|
||
|
if not candidate and not replace:
|
||
|
raise ValueError("must provide a candidate or replace to load configuration")
|
||
|
|
||
|
if commit not in (True, False):
|
||
|
raise ValueError("'commit' must be a bool, got %s" % commit)
|
||
|
|
||
|
if replace and not operations['supports_replace']:
|
||
|
raise ValueError("configuration replace is not supported")
|
||
|
|
||
|
if comment and not operations.get('supports_commit_comment', False):
|
||
|
raise ValueError("commit comment is not supported")
|
||
|
|
||
|
if replace and not operations.get('supports_replace', False):
|
||
|
raise ValueError("configuration replace is not supported")
|