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Creating playbook executor and dependent classes

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This commit is contained in:
James Cammarata 2014-11-14 16:14:08 -06:00
commit 62d79568be
158 changed files with 22486 additions and 2353 deletions
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200
v2/ansible/parsing/__init__.py
View file

@ -19,3 +19,203 @@
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import json
import os
from yaml import load, YAMLError
from ansible.errors import AnsibleParserError
from ansible.errors.yaml_strings import YAML_SYNTAX_ERROR
from ansible.parsing.vault import VaultLib
from ansible.parsing.splitter import unquote
from ansible.parsing.yaml.loader import AnsibleLoader
from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject
class DataLoader():
'''
The DataLoader class is used to load and parse YAML or JSON content,
either from a given file name or from a string that was previously
read in through other means. A Vault password can be specified, and
any vault-encrypted files will be decrypted.
Data read from files will also be cached, so the file will never be
read from disk more than once.
Usage:
dl = DataLoader()
(or)
dl = DataLoader(vault_password='foo')
ds = dl.load('...')
ds = dl.load_from_file('/path/to/file')
'''
def __init__(self, vault_password=None):
self._basedir = '.'
self._vault_password = vault_password
self._FILE_CACHE = dict()
self._vault = VaultLib(password=vault_password)
def load(self, data, file_name='<string>', show_content=True):
'''
Creates a python datastructure from the given data, which can be either
a JSON or YAML string.
'''
try:
# we first try to load this data as JSON
return json.loads(data)
except:
try:
# if loading JSON failed for any reason, we go ahead
# and try to parse it as YAML instead
return self._safe_load(data, file_name=file_name)
except YAMLError as yaml_exc:
self._handle_error(yaml_exc, file_name, show_content)
def load_from_file(self, file_name):
''' Loads data from a file, which can contain either JSON or YAML. '''
file_name = self.path_dwim(file_name)
# if the file has already been read in and cached, we'll
# return those results to avoid more file/vault operations
if file_name in self._FILE_CACHE:
return self._FILE_CACHE[file_name]
# read the file contents and load the data structure from them
(file_data, show_content) = self._get_file_contents(file_name)
parsed_data = self.load(data=file_data, file_name=file_name, show_content=show_content)
# cache the file contents for next time
self._FILE_CACHE[file_name] = parsed_data
return parsed_data
def path_exists(self, path):
return os.path.exists(path)
def is_directory(self, path):
return os.path.isdir(path)
def is_file(self, path):
return os.path.isfile(path)
def _safe_load(self, stream, file_name=None):
''' Implements yaml.safe_load(), except using our custom loader class. '''
loader = AnsibleLoader(stream, file_name)
try:
return loader.get_single_data()
finally:
loader.dispose()
def _get_file_contents(self, file_name):
'''
Reads the file contents from the given file name, and will decrypt them
if they are found to be vault-encrypted.
'''
if not self.path_exists(file_name) or not self.is_file(file_name):
raise AnsibleParserError("the file_name '%s' does not exist, or is not readable" % file_name)
show_content = True
try:
with open(file_name, 'r') as f:
data = f.read()
if self._vault.is_encrypted(data):
data = self._vault.decrypt(data)
show_content = False
return (data, show_content)
except (IOError, OSError) as e:
raise AnsibleParserError("an error occured while trying to read the file '%s': %s" % (file_name, str(e)))
def _handle_error(self, yaml_exc, file_name, show_content):
'''
Optionally constructs an object (AnsibleBaseYAMLObject) to encapsulate the
file name/position where a YAML exception occured, and raises an AnsibleParserError
to display the syntax exception information.
'''
# if the YAML exception contains a problem mark, use it to construct
# an object the error class can use to display the faulty line
err_obj = None
if hasattr(yaml_exc, 'problem_mark'):
err_obj = AnsibleBaseYAMLObject()
err_obj.set_position_info(file_name, yaml_exc.problem_mark.line + 1, yaml_exc.problem_mark.column + 1)
raise AnsibleParserError(YAML_SYNTAX_ERROR, obj=err_obj, show_content=show_content)
def get_basedir(self):
''' returns the current basedir '''
return self._basedir
def set_basedir(self, basedir):
''' sets the base directory, used to find files when a relative path is given '''
if basedir is not None:
self._basedir = basedir
def path_dwim(self, given):
'''
make relative paths work like folks expect.
'''
given = unquote(given)
if given.startswith("/"):
return os.path.abspath(given)
elif given.startswith("~"):
return os.path.abspath(os.path.expanduser(given))
else:
return os.path.abspath(os.path.join(self._basedir, given))
def path_dwim_relative(self, role_path, dirname, source):
''' find one file in a directory one level up in a dir named dirname relative to current '''
basedir = os.path.dirname(role_path)
if os.path.islink(basedir):
# FIXME:
#basedir = unfrackpath(basedir)
template2 = os.path.join(basedir, dirname, source)
else:
template2 = os.path.join(basedir, '..', dirname, source)
source1 = os.path.join(role_path, dirname, source)
if os.path.exists(source1):
return source1
cur_basedir = self._basedir
self.set_basedir(basedir)
source2 = self.path_dwim(template2)
if os.path.exists(source2):
self.set_basedir(cur_basedir)
return source2
obvious_local_path = self.path_dwim(source)
if os.path.exists(obvious_local_path):
self.set_basedir(cur_basedir)
return obvious_local_path
self.set_basedir(cur_basedir)
return source2 # which does not exist
#def __getstate__(self):
# data = dict(
# basedir = self._basedir,
# vault_password = self._vault_password,
# FILE_CACHE = self._FILE_CACHE,
# )
# return data
#def __setstate__(self, data):
# self._basedir = data.get('basedir', '.')
# self._FILE_CACHE = data.get('FILE_CACHE', dict())
# self._vault_password = data.get('vault_password', '')
#
# self._vault = VaultLib(password=self._vault_password)

14
v2/ansible/parsing/mod_args.py
View file

@ -20,9 +20,10 @@ from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from six import iteritems, string_types
from types import NoneType
from ansible.errors import AnsibleParserError
from ansible.plugins import module_finder
from ansible.plugins import module_loader
from ansible.parsing.splitter import parse_kv
class ModuleArgsParser:
@ -120,7 +121,7 @@ class ModuleArgsParser:
(action, args) = self._normalize_new_style_args(thing)
# this can occasionally happen, simplify
if 'args' in args:
if args and 'args' in args:
args = args['args']
return (action, args)
@ -144,8 +145,11 @@ class ModuleArgsParser:
elif isinstance(thing, string_types):
# form is like: local_action: copy src=a dest=b ... pretty common
args = parse_kv(thing)
elif isinstance(thing, NoneType):
# this can happen with modules which take no params, like ping:
args = None
else:
raise AnsibleParsingError("unexpected parameter type in action: %s" % type(thing), obj=self._task_ds)
raise AnsibleParserError("unexpected parameter type in action: %s" % type(thing), obj=self._task_ds)
return args
def _normalize_new_style_args(self, thing):
@ -180,7 +184,7 @@ class ModuleArgsParser:
else:
# need a dict or a string, so giving up
raise AnsibleParsingError("unexpected parameter type in action: %s" % type(thing), obj=self._task_ds)
raise AnsibleParserError("unexpected parameter type in action: %s" % type(thing), obj=self._task_ds)
return (action, args)
@ -224,7 +228,7 @@ class ModuleArgsParser:
# walk the input dictionary to see we recognize a module name
for (item, value) in iteritems(self._task_ds):
if item in module_finder:
if item in module_loader:
# finding more than one module name is a problem
if action is not None:
raise AnsibleParserError("conflicting action statements", obj=self._task_ds)

21
v2/ansible/parsing/utils/__init__.py Normal file
View file

@ -0,0 +1,21 @@
# (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

26
v2/ansible/parsing/utils/jsonify.py Normal file
View file

@ -0,0 +1,26 @@
# FIXME: header
try:
import json
except ImportError:
import simplejson as json
def jsonify(result, format=False):
''' format JSON output (uncompressed or uncompressed) '''
if result is None:
return "{}"
result2 = result.copy()
for key, value in result2.items():
if type(value) is str:
result2[key] = value.decode('utf-8', 'ignore')
indent = None
if format:
indent = 4
try:
return json.dumps(result2, sort_keys=True, indent=indent, ensure_ascii=False)
except UnicodeDecodeError:
return json.dumps(result2, sort_keys=True, indent=indent)

153
v2/ansible/parsing/yaml/__init__.py
View file

@ -19,156 +19,3 @@
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import json
import os
from yaml import load, YAMLError
from ansible.errors import AnsibleParserError
from ansible.parsing.vault import VaultLib
from ansible.parsing.splitter import unquote
from ansible.parsing.yaml.loader import AnsibleLoader
from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject
from ansible.parsing.yaml.strings import YAML_SYNTAX_ERROR
class DataLoader():
'''
The DataLoader class is used to load and parse YAML or JSON content,
either from a given file name or from a string that was previously
read in through other means. A Vault password can be specified, and
any vault-encrypted files will be decrypted.
Data read from files will also be cached, so the file will never be
read from disk more than once.
Usage:
dl = DataLoader()
(or)
dl = DataLoader(vault_password='foo')
ds = dl.load('...')
ds = dl.load_from_file('/path/to/file')
'''
_FILE_CACHE = dict()
def __init__(self, vault_password=None):
self._basedir = '.'
self._vault = VaultLib(password=vault_password)
def load(self, data, file_name='<string>', show_content=True):
'''
Creates a python datastructure from the given data, which can be either
a JSON or YAML string.
'''
try:
# we first try to load this data as JSON
return json.loads(data)
except:
try:
# if loading JSON failed for any reason, we go ahead
# and try to parse it as YAML instead
return self._safe_load(data, file_name=file_name)
except YAMLError as yaml_exc:
self._handle_error(yaml_exc, file_name, show_content)
def load_from_file(self, file_name):
''' Loads data from a file, which can contain either JSON or YAML. '''
file_name = self.path_dwim(file_name)
# if the file has already been read in and cached, we'll
# return those results to avoid more file/vault operations
if file_name in self._FILE_CACHE:
return self._FILE_CACHE[file_name]
# read the file contents and load the data structure from them
(file_data, show_content) = self._get_file_contents(file_name)
parsed_data = self.load(data=file_data, file_name=file_name, show_content=show_content)
# cache the file contents for next time
self._FILE_CACHE[file_name] = parsed_data
return parsed_data
def path_exists(self, path):
return os.path.exists(path)
def is_directory(self, path):
return os.path.isdir(path)
def is_file(self, path):
return os.path.isfile(path)
def _safe_load(self, stream, file_name=None):
''' Implements yaml.safe_load(), except using our custom loader class. '''
loader = AnsibleLoader(stream, file_name)
try:
return loader.get_single_data()
finally:
loader.dispose()
def _get_file_contents(self, file_name):
'''
Reads the file contents from the given file name, and will decrypt them
if they are found to be vault-encrypted.
'''
if not self.path_exists(file_name) or not self.is_file(file_name):
raise AnsibleParserError("the file_name '%s' does not exist, or is not readable" % file_name)
show_content = True
try:
with open(file_name, 'r') as f:
data = f.read()
if self._vault.is_encrypted(data):
data = self._vault.decrypt(data)
show_content = False
return (data, show_content)
except (IOError, OSError) as e:
raise AnsibleParserError("an error occurred while trying to read the file '%s': %s" % (file_name, str(e)))
def _handle_error(self, yaml_exc, file_name, show_content):
'''
Optionally constructs an object (AnsibleBaseYAMLObject) to encapsulate the
file name/position where a YAML exception occurred, and raises an AnsibleParserError
to display the syntax exception information.
'''
# if the YAML exception contains a problem mark, use it to construct
# an object the error class can use to display the faulty line
err_obj = None
if hasattr(yaml_exc, 'problem_mark'):
err_obj = AnsibleBaseYAMLObject()
err_obj.set_position_info(file_name, yaml_exc.problem_mark.line + 1, yaml_exc.problem_mark.column + 1)
raise AnsibleParserError(YAML_SYNTAX_ERROR, obj=err_obj, show_content=show_content)
def get_basedir(self):
''' returns the current basedir '''
return self._basedir
def set_basedir(self, basedir):
''' sets the base directory, used to find files when a relative path is given '''
if basedir is not None:
self._basedir = basedir
def path_dwim(self, given):
'''
make relative paths work like folks expect.
'''
given = unquote(given)
if given.startswith("/"):
return os.path.abspath(given)
elif given.startswith("~"):
return os.path.abspath(os.path.expanduser(given))
else:
return os.path.abspath(os.path.join(self._basedir, given))

118
v2/ansible/parsing/yaml/strings.py
View file

@ -1,118 +0,0 @@
# (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
__all__ = [
'YAML_SYNTAX_ERROR',
'YAML_POSITION_DETAILS',
'YAML_COMMON_DICT_ERROR',
'YAML_COMMON_UNQUOTED_VARIABLE_ERROR',
'YAML_COMMON_UNQUOTED_COLON_ERROR',
'YAML_COMMON_PARTIALLY_QUOTED_LINE_ERROR',
'YAML_COMMON_UNBALANCED_QUOTES_ERROR',
]
YAML_SYNTAX_ERROR = """\
Syntax Error while loading YAML.
"""
YAML_POSITION_DETAILS = """\
The error appears to have been in '%s': line %s, column %s, but may
be elsewhere in the file depending on the exact syntax problem.
"""
YAML_COMMON_DICT_ERROR = """\
This one looks easy to fix. YAML thought it was looking for the start of a
hash/dictionary and was confused to see a second "{". Most likely this was
meant to be an ansible template evaluation instead, so we have to give the
parser a small hint that we wanted a string instead. The solution here is to
just quote the entire value.
For instance, if the original line was:
app_path: {{ base_path }}/foo
It should be written as:
app_path: "{{ base_path }}/foo"
"""
YAML_COMMON_UNQUOTED_VARIABLE_ERROR = """\
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:
with_items:
- {{ foo }}
Should be written as:
with_items:
- "{{ foo }}"
"""
YAML_COMMON_UNQUOTED_COLON_ERROR = """\
This one looks easy to fix. There seems to be an extra unquoted colon in the line
and this is confusing the parser. It was only expecting to find one free
colon. The solution is just add some quotes around the colon, or quote the
entire line after the first colon.
For instance, if the original line was:
copy: src=file.txt dest=/path/filename:with_colon.txt
It can be written as:
copy: src=file.txt dest='/path/filename:with_colon.txt'
Or:
copy: 'src=file.txt dest=/path/filename:with_colon.txt'
"""
YAML_COMMON_PARTIALLY_QUOTED_LINE_ERROR = """\
This one looks easy to fix. It seems that there is a value started
with a quote, and the YAML parser is expecting to see the line ended
with the same kind of quote. For instance:
when: "ok" in result.stdout
Could be written as:
when: '"ok" in result.stdout'
Or equivalently:
when: "'ok' in result.stdout"
"""
YAML_COMMON_UNBALANCED_QUOTES_ERROR = """\
We could be wrong, but this one looks like it might be an issue with
unbalanced quotes. If starting a value with a quote, make sure the
line ends with the same set of quotes. For instance this arbitrary
example:
foo: "bad" "wolf"
Could be written as:
foo: '"bad" "wolf"'
"""