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ansible/lib/ansible/plugins/callback/__init__.py

447 lines
17 KiB
Python

# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
#
# 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/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import difflib
import json
import sys
from collections import OrderedDict
from copy import deepcopy
from ansible import constants as C
from ansible.module_utils.common._collections_compat import MutableMapping
from ansible.module_utils._text import to_text
from ansible.parsing.ajson import AnsibleJSONEncoder
from ansible.plugins import AnsiblePlugin, get_plugin_class
from ansible.utils.color import stringc
from ansible.utils.display import Display
from ansible.vars.clean import strip_internal_keys, module_response_deepcopy
global_display = Display()
__all__ = ["CallbackBase"]
_DEBUG_ALLOWED_KEYS = frozenset(('msg', 'exception', 'warnings', 'deprecations'))
class CallbackBase(AnsiblePlugin):
'''
This is a base ansible callback class that does nothing. New callbacks should
use this class as a base and override any callback methods they wish to execute
custom actions.
'''
def __init__(self, display=None, options=None):
if display:
self._display = display
else:
self._display = global_display
if self._display.verbosity >= 4:
name = getattr(self, 'CALLBACK_NAME', 'unnamed')
ctype = getattr(self, 'CALLBACK_TYPE', 'old')
version = getattr(self, 'CALLBACK_VERSION', '1.0')
self._display.vvvv('Loading callback plugin %s of type %s, v%s from %s' % (name, ctype, version, sys.modules[self.__module__].__file__))
self.disabled = False
self.wants_implicit_tasks = False
self._plugin_options = {}
if options is not None:
self.set_options(options)
self._hide_in_debug = ('changed', 'failed', 'skipped', 'invocation', 'skip_reason')
''' helper for callbacks, so they don't all have to include deepcopy '''
_copy_result = deepcopy
def set_option(self, k, v):
self._plugin_options[k] = v
def get_option(self, k):
return self._plugin_options[k]
def set_options(self, task_keys=None, var_options=None, direct=None):
''' This is different than the normal plugin method as callbacks get called early and really don't accept keywords.
Also _options was already taken for CLI args and callbacks use _plugin_options instead.
'''
# load from config
self._plugin_options = C.config.get_plugin_options(get_plugin_class(self), self._load_name, keys=task_keys, variables=var_options, direct=direct)
@staticmethod
def host_label(result):
"""Return label for the hostname (& delegated hostname) of a task
result.
"""
label = "%s" % result._host.get_name()
if result._task.delegate_to and result._task.delegate_to != result._host.get_name():
# show delegated host
label += " -> %s" % result._task.delegate_to
# in case we have 'extra resolution'
ahost = result._result.get('_ansible_delegated_vars', {}).get('ansible_host', result._task.delegate_to)
if result._task.delegate_to != ahost:
label += "(%s)" % ahost
return label
def _run_is_verbose(self, result, verbosity=0):
return ((self._display.verbosity > verbosity or result._result.get('_ansible_verbose_always', False) is True)
and result._result.get('_ansible_verbose_override', False) is False)
def _dump_results(self, result, indent=None, sort_keys=True, keep_invocation=False):
if not indent and (result.get('_ansible_verbose_always') or self._display.verbosity > 2):
indent = 4
# All result keys stating with _ansible_ are internal, so remove them from the result before we output anything.
abridged_result = strip_internal_keys(module_response_deepcopy(result))
# remove invocation unless specifically wanting it
if not keep_invocation and self._display.verbosity < 3 and 'invocation' in result:
del abridged_result['invocation']
# remove diff information from screen output
if self._display.verbosity < 3 and 'diff' in result:
del abridged_result['diff']
# remove exception from screen output
if 'exception' in abridged_result:
del abridged_result['exception']
try:
jsonified_results = json.dumps(abridged_result, cls=AnsibleJSONEncoder, indent=indent, ensure_ascii=False, sort_keys=sort_keys)
except TypeError:
# Python3 bug: throws an exception when keys are non-homogenous types:
# https://bugs.python.org/issue25457
# sort into an OrderedDict and then json.dumps() that instead
if not OrderedDict:
raise
jsonified_results = json.dumps(OrderedDict(sorted(abridged_result.items(), key=to_text)),
cls=AnsibleJSONEncoder, indent=indent,
ensure_ascii=False, sort_keys=False)
return jsonified_results
def _handle_warnings(self, res):
''' display warnings, if enabled and any exist in the result '''
if C.ACTION_WARNINGS:
if 'warnings' in res and res['warnings']:
for warning in res['warnings']:
self._display.warning(warning)
del res['warnings']
if 'deprecations' in res and res['deprecations']:
for warning in res['deprecations']:
self._display.deprecated(**warning)
del res['deprecations']
def _handle_exception(self, result, use_stderr=False):
if 'exception' in result:
msg = "An exception occurred during task execution. "
if self._display.verbosity < 3:
# extract just the actual error message from the exception text
error = result['exception'].strip().split('\n')[-1]
msg += "To see the full traceback, use -vvv. The error was: %s" % error
else:
msg = "The full traceback is:\n" + result['exception']
del result['exception']
self._display.display(msg, color=C.COLOR_ERROR, stderr=use_stderr)
def _serialize_diff(self, diff):
return json.dumps(diff, sort_keys=True, indent=4, separators=(u',', u': ')) + u'\n'
def _get_diff(self, difflist):
if not isinstance(difflist, list):
difflist = [difflist]
ret = []
for diff in difflist:
if 'dst_binary' in diff:
ret.append(u"diff skipped: destination file appears to be binary\n")
if 'src_binary' in diff:
ret.append(u"diff skipped: source file appears to be binary\n")
if 'dst_larger' in diff:
ret.append(u"diff skipped: destination file size is greater than %d\n" % diff['dst_larger'])
if 'src_larger' in diff:
ret.append(u"diff skipped: source file size is greater than %d\n" % diff['src_larger'])
if 'before' in diff and 'after' in diff:
# format complex structures into 'files'
for x in ['before', 'after']:
if isinstance(diff[x], MutableMapping):
diff[x] = self._serialize_diff(diff[x])
elif diff[x] is None:
diff[x] = ''
if 'before_header' in diff:
before_header = u"before: %s" % diff['before_header']
else:
before_header = u'before'
if 'after_header' in diff:
after_header = u"after: %s" % diff['after_header']
else:
after_header = u'after'
before_lines = diff['before'].splitlines(True)
after_lines = diff['after'].splitlines(True)
if before_lines and not before_lines[-1].endswith(u'\n'):
before_lines[-1] += u'\n\\ No newline at end of file\n'
if after_lines and not after_lines[-1].endswith('\n'):
after_lines[-1] += u'\n\\ No newline at end of file\n'
differ = difflib.unified_diff(before_lines,
after_lines,
fromfile=before_header,
tofile=after_header,
fromfiledate=u'',
tofiledate=u'',
n=C.DIFF_CONTEXT)
difflines = list(differ)
if len(difflines) >= 3 and sys.version_info[:2] == (2, 6):
# difflib in Python 2.6 adds trailing spaces after
# filenames in the -- before/++ after headers.
difflines[0] = difflines[0].replace(u' \n', u'\n')
difflines[1] = difflines[1].replace(u' \n', u'\n')
# it also treats empty files differently
difflines[2] = difflines[2].replace(u'-1,0', u'-0,0').replace(u'+1,0', u'+0,0')
has_diff = False
for line in difflines:
has_diff = True
if line.startswith(u'+'):
line = stringc(line, C.COLOR_DIFF_ADD)
elif line.startswith(u'-'):
line = stringc(line, C.COLOR_DIFF_REMOVE)
elif line.startswith(u'@@'):
line = stringc(line, C.COLOR_DIFF_LINES)
ret.append(line)
if has_diff:
ret.append('\n')
if 'prepared' in diff:
ret.append(diff['prepared'])
return u''.join(ret)
def _get_item_label(self, result):
''' retrieves the value to be displayed as a label for an item entry from a result object'''
if result.get('_ansible_no_log', False):
item = "(censored due to no_log)"
else:
item = result.get('_ansible_item_label', result.get('item'))
return item
def _process_items(self, result):
# just remove them as now they get handled by individual callbacks
del result._result['results']
def _clean_results(self, result, task_name):
''' removes data from results for display '''
# mostly controls that debug only outputs what it was meant to
if task_name in C._ACTION_DEBUG:
if 'msg' in result:
# msg should be alone
for key in list(result.keys()):
if key not in _DEBUG_ALLOWED_KEYS and not key.startswith('_'):
result.pop(key)
else:
# 'var' value as field, so eliminate others and what is left should be varname
for hidme in self._hide_in_debug:
result.pop(hidme, None)
def _print_task_path(self, task, color=C.COLOR_DEBUG):
path = task.get_path()
if path:
self._display.display(u"task path: %s" % path, color=color)
def set_play_context(self, play_context):
pass
def on_any(self, *args, **kwargs):
pass
def runner_on_failed(self, host, res, ignore_errors=False):
pass
def runner_on_ok(self, host, res):
pass
def runner_on_skipped(self, host, item=None):
pass
def runner_on_unreachable(self, host, res):
pass
def runner_on_no_hosts(self):
pass
def runner_on_async_poll(self, host, res, jid, clock):
pass
def runner_on_async_ok(self, host, res, jid):
pass
def runner_on_async_failed(self, host, res, jid):
pass
def playbook_on_start(self):
pass
def playbook_on_notify(self, host, handler):
pass
def playbook_on_no_hosts_matched(self):
pass
def playbook_on_no_hosts_remaining(self):
pass
def playbook_on_task_start(self, name, is_conditional):
pass
def playbook_on_vars_prompt(self, varname, private=True, prompt=None, encrypt=None, confirm=False, salt_size=None, salt=None, default=None, unsafe=None):
pass
def playbook_on_setup(self):
pass
def playbook_on_import_for_host(self, host, imported_file):
pass
def playbook_on_not_import_for_host(self, host, missing_file):
pass
def playbook_on_play_start(self, name):
pass
def playbook_on_stats(self, stats):
pass
def on_file_diff(self, host, diff):
pass
# V2 METHODS, by default they call v1 counterparts if possible
def v2_on_any(self, *args, **kwargs):
self.on_any(args, kwargs)
def v2_runner_on_failed(self, result, ignore_errors=False):
host = result._host.get_name()
self.runner_on_failed(host, result._result, ignore_errors)
def v2_runner_on_ok(self, result):
host = result._host.get_name()
self.runner_on_ok(host, result._result)
def v2_runner_on_skipped(self, result):
if C.DISPLAY_SKIPPED_HOSTS:
host = result._host.get_name()
self.runner_on_skipped(host, self._get_item_label(getattr(result._result, 'results', {})))
def v2_runner_on_unreachable(self, result):
host = result._host.get_name()
self.runner_on_unreachable(host, result._result)
def v2_runner_on_async_poll(self, result):
host = result._host.get_name()
jid = result._result.get('ansible_job_id')
# FIXME, get real clock
clock = 0
self.runner_on_async_poll(host, result._result, jid, clock)
def v2_runner_on_async_ok(self, result):
host = result._host.get_name()
jid = result._result.get('ansible_job_id')
self.runner_on_async_ok(host, result._result, jid)
def v2_runner_on_async_failed(self, result):
host = result._host.get_name()
# Attempt to get the async job ID. If the job does not finish before the
# async timeout value, the ID may be within the unparsed 'async_result' dict.
jid = result._result.get('ansible_job_id')
if not jid and 'async_result' in result._result:
jid = result._result['async_result'].get('ansible_job_id')
self.runner_on_async_failed(host, result._result, jid)
def v2_playbook_on_start(self, playbook):
self.playbook_on_start()
def v2_playbook_on_notify(self, handler, host):
self.playbook_on_notify(host, handler)
def v2_playbook_on_no_hosts_matched(self):
self.playbook_on_no_hosts_matched()
def v2_playbook_on_no_hosts_remaining(self):
self.playbook_on_no_hosts_remaining()
def v2_playbook_on_task_start(self, task, is_conditional):
self.playbook_on_task_start(task.name, is_conditional)
# FIXME: not called
def v2_playbook_on_cleanup_task_start(self, task):
pass # no v1 correspondence
def v2_playbook_on_handler_task_start(self, task):
pass # no v1 correspondence
def v2_playbook_on_vars_prompt(self, varname, private=True, prompt=None, encrypt=None, confirm=False, salt_size=None, salt=None, default=None, unsafe=None):
self.playbook_on_vars_prompt(varname, private, prompt, encrypt, confirm, salt_size, salt, default, unsafe)
# FIXME: not called
def v2_playbook_on_import_for_host(self, result, imported_file):
host = result._host.get_name()
self.playbook_on_import_for_host(host, imported_file)
# FIXME: not called
def v2_playbook_on_not_import_for_host(self, result, missing_file):
host = result._host.get_name()
self.playbook_on_not_import_for_host(host, missing_file)
def v2_playbook_on_play_start(self, play):
self.playbook_on_play_start(play.name)
def v2_playbook_on_stats(self, stats):
self.playbook_on_stats(stats)
def v2_on_file_diff(self, result):
if 'diff' in result._result:
host = result._host.get_name()
self.on_file_diff(host, result._result['diff'])
def v2_playbook_on_include(self, included_file):
pass # no v1 correspondence
def v2_runner_item_on_ok(self, result):
pass
def v2_runner_item_on_failed(self, result):
pass
def v2_runner_item_on_skipped(self, result):
pass
def v2_runner_retry(self, result):
pass
def v2_runner_on_start(self, host, task):
"""Event used when host begins execution of a task
.. versionadded:: 2.8
"""
pass