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Connection plugins network_cli and netconf (#32521)

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* implements jsonrpc message passing for ansible-connection

* implements more generic mechanism for persistent connections
* starts persistent connection in task_executor if enabled and supported
* supports using network_cli as top level connection plugin
* enhances logging for persistent connection to stdout

* Update action plugins

* Fix Python3 RPC

* Fix Junos bytes<-->str issues

* supports using netconf as top level connection plugin

* Error message when running netconf on an unsupported platform
* Update tests

* Fix `authorize: yes` for `connection: local`

* Handle potentially JSON data in terminal

* Add clarifying detail if possible on ConnectionError
This commit is contained in:
Nathaniel Case 2017-11-09 15:04:40 -05:00 • committed by GitHub
commit 9c0275a879
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26 changed files with 722 additions and 798 deletions
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23
lib/ansible/plugins/terminal/__init__.py
View file

@ -56,20 +56,12 @@ class TerminalBase(with_metaclass(ABCMeta, object)):
self._connection = connection
def _exec_cli_command(self, cmd, check_rc=True):
"""
Executes a CLI command on the device
'''
Executes the CLI command on the remote device and returns the output
:arg cmd: Byte string consisting of the command to execute
:kwarg check_rc: If True, the default, raise an
:exc:`AnsibleConnectionFailure` if the return code from the
command is nonzero
:returns: A tuple of return code, stdout, and stderr from running the
command. stdout and stderr are both byte strings.
"""
rc, out, err = self._connection.exec_command(cmd)
if check_rc and rc != 0:
raise AnsibleConnectionFailure(err)
return rc, out, err
:arg cmd: Byte string command to be executed
'''
return self._connection.exec_command(cmd)
def _get_prompt(self):
"""
@ -77,9 +69,8 @@ class TerminalBase(with_metaclass(ABCMeta, object)):
:returns: A byte string of the prompt
"""
for cmd in (b'\n', b'prompt()'):
rc, out, err = self._exec_cli_command(cmd)
return out
self._exec_cli_command(b'\n')
return self._connection._matched_prompt
def on_open_shell(self):
"""Called after the SSH session is established

10
lib/ansible/plugins/terminal/junos.py
View file

@ -36,21 +36,21 @@ except ImportError:
class TerminalModule(TerminalBase):
terminal_stdout_re = [
re.compile(r"[\r\n]?[\w+\-\.:\/\[\]]+(?:\([^\)]+\)){,3}(?:>|#) ?$|%"),
re.compile(br"[\r\n]?[\w+\-\.:\/\[\]]+(?:\([^\)]+\)){,3}(?:>|#) ?$|%"),
]
terminal_stderr_re = [
re.compile(r"unknown command"),
re.compile(r"syntax error,")
re.compile(br"unknown command"),
re.compile(br"syntax error,")
]
def on_open_shell(self):
try:
prompt = self._get_prompt()
if prompt.strip().endswith('%'):
if prompt.strip().endswith(b'%'):
display.vvv('starting cli', self._connection._play_context.remote_addr)
self._exec_cli_command('cli')
for c in ['set cli timestamp disable', 'set cli screen-length 0', 'set cli screen-width 1024']:
for c in (b'set cli timestamp disable', b'set cli screen-length 0', b'set cli screen-width 1024'):
self._exec_cli_command(c)
except AnsibleConnectionFailure:
raise AnsibleConnectionFailure('unable to set terminal parameters')