class TestDataLoader(unittest.TestCase):
def setUp(self):
# FIXME: need to add tests that utilize vault_password
self._loader = DataLoader()
def tearDown(self):
pass
@patch.object(DataLoader, '_get_file_contents')
def test_parse_json_from_file(self, mock_def):
mock_def.return_value = ("""{"a": 1, "b": 2, "c": 3}""", True)
output = self._loader.load_from_file('dummy_json.txt')
self.assertEqual(output, dict(a=1, b=2, c=3))
@patch.object(DataLoader, '_get_file_contents')
def test_parse_yaml_from_file(self, mock_def):
mock_def.return_value = ("""
a: 1
b: 2
c: 3
""", True)
output = self._loader.load_from_file('dummy_yaml.txt')
self.assertEqual(output, dict(a=1, b=2, c=3))
@patch.object(DataLoader, '_get_file_contents')
def test_parse_fail_from_file(self, mock_def):
mock_def.return_value = ("""
TEXT:
***
NOT VALID
""", True)
self.assertRaises(AnsibleParserError, self._loader.load_from_file,
'dummy_yaml_bad.txt')
def __init__(self, loader=None):
# Entries in the datastructure of a playbook may
# be either a play or an include statement
self._entries = []
self._basedir = '.'
if loader:
self._loader = loader
else:
self._loader = DataLoader()
def __init__(self, inventory_path=None, loader=None):
self._fact_cache = FactCache()
self._vars_cache = defaultdict(dict)
self._extra_vars = defaultdict(dict)
self._host_vars_files = defaultdict(dict)
self._group_vars_files = defaultdict(dict)
if not loader:
self._loader = DataLoader()
else:
self._loader = loader
class Playbook:
def __init__(self, loader=None):
# Entries in the datastructure of a playbook may
# be either a play or an include statement
self._entries = []
self._basedir = '.'
if loader:
self._loader = loader
else:
self._loader = DataLoader()
@staticmethod
def load(file_name, loader=None):
pb = Playbook(loader=loader)
pb._load_playbook_data(file_name)
return pb
def _load_playbook_data(self, file_name):
# add the base directory of the file to the data loader,
# so that it knows where to find relatively pathed files
basedir = os.path.dirname(file_name)
self._loader.set_basedir(basedir)
# also add the basedir to the list of module directories
push_basedir(basedir)
ds = self._loader.load_from_file(file_name)
if not isinstance(ds, list):
raise AnsibleParserError("playbooks must be a list of plays",
obj=ds)
# Parse the playbook entries. For plays, we simply parse them
# using the Play() object, and includes are parsed using the
# PlaybookInclude() object
for entry in ds:
if not isinstance(entry, dict):
raise AnsibleParserError(
"playbook entries must be either a valid play or an include statement",
obj=entry)
if 'include' in entry:
entry_obj = PlaybookInclude.load(entry, loader=self._loader)
else:
entry_obj = Play.load(entry, loader=self._loader)
self._entries.append(entry_obj)
def get_entries(self):
return self._entries[:]
class Playbook:
def __init__(self, loader=None):
# Entries in the datastructure of a playbook may
# be either a play or an include statement
self._entries = []
self._basedir = '.'
if loader:
self._loader = loader
else:
self._loader = DataLoader()
@staticmethod
def load(file_name, loader=None):
pb = Playbook(loader=loader)
pb._load_playbook_data(file_name)
return pb
def _load_playbook_data(self, file_name):
# add the base directory of the file to the data loader,
# so that it knows where to find relatively pathed files
basedir = os.path.dirname(file_name)
self._loader.set_basedir(basedir)
# also add the basedir to the list of module directories
push_basedir(basedir)
ds = self._loader.load_from_file(file_name)
if not isinstance(ds, list):
raise AnsibleParserError("playbooks must be a list of plays", obj=ds)
# Parse the playbook entries. For plays, we simply parse them
# using the Play() object, and includes are parsed using the
# PlaybookInclude() object
for entry in ds:
if not isinstance(entry, dict):
raise AnsibleParserError("playbook entries must be either a valid play or an include statement", obj=entry)
if 'include' in entry:
entry_obj = PlaybookInclude.load(entry, loader=self._loader)
else:
entry_obj = Play.load(entry, loader=self._loader)
self._entries.append(entry_obj)
def get_entries(self):
return self._entries[:]
def __init__(self, loader=None):
# Entries in the datastructure of a playbook may
# be either a play or an include statement
self._entries = []
self._basedir = '.'
if loader:
self._loader = loader
else:
self._loader = DataLoader()
def __init__(self, inventory_path=None, loader=None):
self._fact_cache = FactCache()
self._vars_cache = defaultdict(dict)
self._extra_vars = defaultdict(dict)
self._host_vars_files = defaultdict(dict)
self._group_vars_files = defaultdict(dict)
if not loader:
self._loader = DataLoader()
else:
self._loader = loader
class TestDataLoader(unittest.TestCase):
def setUp(self):
# FIXME: need to add tests that utilize vault_password
self._loader = DataLoader()
def tearDown(self):
pass
@patch.object(DataLoader, "_get_file_contents")
def test_parse_json_from_file(self, mock_def):
mock_def.return_value = ("""{"a": 1, "b": 2, "c": 3}""", True)
output = self._loader.load_from_file("dummy_json.txt")
self.assertEqual(output, dict(a=1, b=2, c=3))
@patch.object(DataLoader, "_get_file_contents")
def test_parse_yaml_from_file(self, mock_def):
mock_def.return_value = (
"""
a: 1
b: 2
c: 3
""",
True,
)
output = self._loader.load_from_file("dummy_yaml.txt")
self.assertEqual(output, dict(a=1, b=2, c=3))
@patch.object(DataLoader, "_get_file_contents")
def test_parse_fail_from_file(self, mock_def):
mock_def.return_value = (
"""
TEXT:
***
NOT VALID
""",
True,
)
self.assertRaises(AnsibleParserError, self._loader.load_from_file, "dummy_yaml_bad.txt")
def load_data(self, ds, loader=None):
''' walk the input datastructure and assign any values '''
assert ds is not None
# the data loader class is used to parse data from strings and files
if loader is not None:
self._loader = loader
else:
self._loader = DataLoader()
if isinstance(ds, string_types) or isinstance(ds, FileIO):
ds = self._loader.load(ds)
# call the munge() function to massage the data into something
# we can more easily parse, and then call the validation function
# on it to ensure there are no incorrect key values
ds = self.munge(ds)
self._validate_attributes(ds)
# Walk all attributes in the class.
#
# FIXME: we currently don't do anything with private attributes but
# may later decide to filter them out of 'ds' here.
for (name, attribute) in iteritems(self._get_base_attributes()):
# copy the value over unless a _load_field method is defined
if name in ds:
method = getattr(self, '_load_%s' % name, None)
if method:
self._attributes[name] = method(name, ds[name])
else:
self._attributes[name] = ds[name]
# return the constructed object
self.validate()
return self
def load_data(self, ds, loader=None):
''' walk the input datastructure and assign any values '''
assert ds is not None
# the data loader class is used to parse data from strings and files
if loader is not None:
self._loader = loader
else:
self._loader = DataLoader()
if isinstance(ds, string_types) or isinstance(ds, FileIO):
ds = self._loader.load(ds)
# call the munge() function to massage the data into something
# we can more easily parse, and then call the validation function
# on it to ensure there are no incorrect key values
ds = self.munge(ds)
self._validate_attributes(ds)
# Walk all attributes in the class.
#
# FIXME: we currently don't do anything with private attributes but
# may later decide to filter them out of 'ds' here.
for (name, attribute) in iteritems(self._get_base_attributes()):
# copy the value over unless a _load_field method is defined
if name in ds:
method = getattr(self, '_load_%s' % name, None)
if method:
self._attributes[name] = method(name, ds[name])
else:
self._attributes[name] = ds[name]
# return the constructed object
self.validate()
return self
class Base:
def __init__(self):
# initialize the data loader, this will be provided later
# when the object is actually loaded
self._loader = None
# each class knows attributes set upon it, see Task.py for example
self._attributes = dict()
for (name, value) in iteritems(self._get_base_attributes()):
self._attributes[name] = value.default
def _get_base_attributes(self):
'''
Returns the list of attributes for this class (or any subclass thereof).
If the attribute name starts with an underscore, it is removed
'''
base_attributes = dict()
for (name, value) in getmembers(self.__class__):
if isinstance(value, Attribute):
if name.startswith('_'):
name = name[1:]
base_attributes[name] = value
return base_attributes
def munge(self, ds):
''' infrequently used method to do some pre-processing of legacy terms '''
return ds
def load_data(self, ds, loader=None):
''' walk the input datastructure and assign any values '''
assert ds is not None
# the data loader class is used to parse data from strings and files
if loader is not None:
self._loader = loader
else:
self._loader = DataLoader()
if isinstance(ds, string_types) or isinstance(ds, FileIO):
ds = self._loader.load(ds)
# call the munge() function to massage the data into something
# we can more easily parse, and then call the validation function
# on it to ensure there are no incorrect key values
ds = self.munge(ds)
self._validate_attributes(ds)
# Walk all attributes in the class.
#
# FIXME: we currently don't do anything with private attributes but
# may later decide to filter them out of 'ds' here.
for (name, attribute) in iteritems(self._get_base_attributes()):
# copy the value over unless a _load_field method is defined
if name in ds:
method = getattr(self, '_load_%s' % name, None)
if method:
self._attributes[name] = method(name, ds[name])
else:
self._attributes[name] = ds[name]
# return the constructed object
self.validate()
return self
def get_loader(self):
return self._loader
def _validate_attributes(self, ds):
'''
Ensures that there are no keys in the datastructure which do
not map to attributes for this object.
'''
valid_attrs = [name for (name, attribute) in iteritems(self._get_base_attributes())]
for key in ds:
if key not in valid_attrs:
raise AnsibleParserError("'%s' is not a valid attribute for a %s" % (key, self.__class__.__name__), obj=ds)
def validate(self):
''' validation that is done at parse time, not load time '''
# walk all fields in the object
for (name, attribute) in iteritems(self._get_base_attributes()):
# run validator only if present
method = getattr(self, '_validate_%s' % name, None)
if method:
method(self, attribute)
def post_validate(self, runner_context):
'''
we can't tell that everything is of the right type until we have
all the variables. Run basic types (from isa) as well as
any _post_validate_<foo> functions.
'''
raise exception.NotImplementedError
def __getattr__(self, needle):
# return any attribute names as if they were real
# optionally allowing masking by accessors
if not needle.startswith("_"):
method = "get_%s" % needle
if method in self.__dict__:
return method(self)
if needle in self._attributes:
return self._attributes[needle]
raise AttributeError("attribute not found: %s" % needle)
class VariableManager:
def __init__(self, inventory_path=None, loader=None):
self._fact_cache = FactCache()
self._vars_cache = defaultdict(dict)
self._extra_vars = defaultdict(dict)
self._host_vars_files = defaultdict(dict)
self._group_vars_files = defaultdict(dict)
if not loader:
self._loader = DataLoader()
else:
self._loader = loader
@property
def extra_vars(self):
''' ensures a clean copy of the extra_vars are made '''
return self._extra_vars.copy()
def set_extra_vars(self, value):
''' ensures a clean copy of the extra_vars are used to set the value '''
assert isinstance(value, dict)
self._extra_vars = value.copy()
def _merge_dicts(self, a, b):
'''
Recursively merges dict b into a, so that keys
from b take precedence over keys from a.
'''
result = dict()
# FIXME: do we need this from utils, or should it just
# be merged into this definition?
#_validate_both_dicts(a, b)
for dicts in a, b:
# next, iterate over b keys and values
for k, v in dicts.iteritems():
# if there's already such key in a
# and that key contains dict
if k in result and isinstance(result[k], dict):
# merge those dicts recursively
result[k] = self._merge_dicts(a[k], v)
else:
# otherwise, just copy a value from b to a
result[k] = v
return result
def get_vars(self, play=None, host=None, task=None):
'''
Returns the variables, with optional "context" given via the parameters
for the play, host, and task (which could possibly result in different
sets of variables being returned due to the additional context).
The order of precedence is:
- play->roles->get_default_vars (if there is a play context)
- group_vars_files[host] (if there is a host context)
- host_vars_files[host] (if there is a host context)
- host->get_vars (if there is a host context)
- fact_cache[host] (if there is a host context)
- vars_cache[host] (if there is a host context)
- play vars (if there is a play context)
- play vars_files (if there's no host context, ignore
file names that cannot be templated)
- task->get_vars (if there is a task context)
- extra vars
'''
vars = defaultdict(dict)
if play:
# first we compile any vars specified in defaults/main.yml
# for all roles within the specified play
for role in play.get_roles():
vars = self._merge_dicts(vars, role.get_default_vars())
if host:
# next, if a host is specified, we load any vars from group_vars
# files and then any vars from host_vars files which may apply to
# this host or the groups it belongs to
for group in host.get_groups():
if group in self._group_vars_files:
vars = self._merge_dicts(vars,
self._group_vars_files[group])
host_name = host.get_name()
if host_name in self._host_vars_files:
vars = self._merge_dicts(vars,
self._host_vars_files[host_name])
# then we merge in vars specified for this host
vars = self._merge_dicts(vars, host.get_vars())
# next comes the facts cache and the vars cache, respectively
vars = self._merge_dicts(
vars, self._fact_cache.get(host.get_name(), dict()))
vars = self._merge_dicts(
vars, self._vars_cache.get(host.get_name(), dict()))
if play:
vars = self._merge_dicts(vars, play.get_vars())
for vars_file in play.get_vars_files():
# Try templating the vars_file. If an unknown var error is raised,
# ignore it - unless a host is specified
# TODO ...
data = self._loader.load_from_file(vars_file)
vars = self._merge_dicts(vars, data)
if task:
vars = self._merge_dicts(vars, task.get_vars())
vars = self._merge_dicts(vars, self._extra_vars)
return vars
def _get_inventory_basename(self, path):
'''
Returns the bsaename minus the extension of the given path, so the
bare filename can be matched against host/group names later
'''
(name, ext) = os.path.splitext(os.path.basename(path))
return name
def _load_inventory_file(self, path):
'''
helper function, which loads the file and gets the
basename of the file without the extension
'''
data = self._loader.load_from_file(path)
name = self._get_inventory_basename(path)
return (name, data)
def add_host_vars_file(self, path):
'''
Loads and caches a host_vars file in the _host_vars_files dict,
where the key to that dictionary is the basename of the file, minus
the extension, for matching against a given inventory host name
'''
(name, data) = self._load_inventory_file(path)
self._host_vars_files[name] = data
def add_group_vars_file(self, path):
'''
Loads and caches a host_vars file in the _host_vars_files dict,
where the key to that dictionary is the basename of the file, minus
the extension, for matching against a given inventory host name
'''
(name, data) = self._load_inventory_file(path)
self._group_vars_files[name] = data
def setUp(self):
# FIXME: need to add tests that utilize vault_password
self._loader = DataLoader()
class Base:
def __init__(self):
# initialize the data loader, this will be provided later
# when the object is actually loaded
self._loader = None
# each class knows attributes set upon it, see Task.py for example
self._attributes = dict()
for (name, value) in iteritems(self._get_base_attributes()):
self._attributes[name] = value.default
def _get_base_attributes(self):
'''
Returns the list of attributes for this class (or any subclass thereof).
If the attribute name starts with an underscore, it is removed
'''
base_attributes = dict()
for (name, value) in getmembers(self.__class__):
if isinstance(value, Attribute):
if name.startswith('_'):
name = name[1:]
base_attributes[name] = value
return base_attributes
def munge(self, ds):
''' infrequently used method to do some pre-processing of legacy terms '''
return ds
def load_data(self, ds, loader=None):
''' walk the input datastructure and assign any values '''
assert ds is not None
# the data loader class is used to parse data from strings and files
if loader is not None:
self._loader = loader
else:
self._loader = DataLoader()
if isinstance(ds, string_types) or isinstance(ds, FileIO):
ds = self._loader.load(ds)
# call the munge() function to massage the data into something
# we can more easily parse, and then call the validation function
# on it to ensure there are no incorrect key values
ds = self.munge(ds)
self._validate_attributes(ds)
# Walk all attributes in the class.
#
# FIXME: we currently don't do anything with private attributes but
# may later decide to filter them out of 'ds' here.
for (name, attribute) in iteritems(self._get_base_attributes()):
# copy the value over unless a _load_field method is defined
if name in ds:
method = getattr(self, '_load_%s' % name, None)
if method:
self._attributes[name] = method(name, ds[name])
else:
self._attributes[name] = ds[name]
# return the constructed object
self.validate()
return self
def get_loader(self):
return self._loader
def _validate_attributes(self, ds):
'''
Ensures that there are no keys in the datastructure which do
not map to attributes for this object.
'''
valid_attrs = [
name
for (name, attribute) in iteritems(self._get_base_attributes())
]
for key in ds:
if key not in valid_attrs:
raise AnsibleParserError(
"'%s' is not a valid attribute for a %s" %
(key, self.__class__.__name__),
obj=ds)
def validate(self):
''' validation that is done at parse time, not load time '''
# walk all fields in the object
for (name, attribute) in iteritems(self._get_base_attributes()):
# run validator only if present
method = getattr(self, '_validate_%s' % name, None)
if method:
method(self, attribute)
def post_validate(self, runner_context):
'''
we can't tell that everything is of the right type until we have
all the variables. Run basic types (from isa) as well as
any _post_validate_<foo> functions.
'''
raise exception.NotImplementedError
def __getattr__(self, needle):
# return any attribute names as if they were real
# optionally allowing masking by accessors
if not needle.startswith("_"):
method = "get_%s" % needle
if method in self.__dict__:
return method(self)
if needle in self._attributes:
return self._attributes[needle]
raise AttributeError("attribute not found: %s" % needle)
class VariableManager:
def __init__(self, inventory_path=None, loader=None):
self._fact_cache = FactCache()
self._vars_cache = defaultdict(dict)
self._extra_vars = defaultdict(dict)
self._host_vars_files = defaultdict(dict)
self._group_vars_files = defaultdict(dict)
if not loader:
self._loader = DataLoader()
else:
self._loader = loader
@property
def extra_vars(self):
''' ensures a clean copy of the extra_vars are made '''
return self._extra_vars.copy()
def set_extra_vars(self, value):
''' ensures a clean copy of the extra_vars are used to set the value '''
assert isinstance(value, dict)
self._extra_vars = value.copy()
def _merge_dicts(self, a, b):
'''
Recursively merges dict b into a, so that keys
from b take precedence over keys from a.
'''
result = dict()
# FIXME: do we need this from utils, or should it just
# be merged into this definition?
#_validate_both_dicts(a, b)
for dicts in a, b:
# next, iterate over b keys and values
for k, v in dicts.iteritems():
# if there's already such key in a
# and that key contains dict
if k in result and isinstance(result[k], dict):
# merge those dicts recursively
result[k] = self._merge_dicts(a[k], v)
else:
# otherwise, just copy a value from b to a
result[k] = v
return result
def get_vars(self, play=None, host=None, task=None):
'''
Returns the variables, with optional "context" given via the parameters
for the play, host, and task (which could possibly result in different
sets of variables being returned due to the additional context).
The order of precedence is:
- play->roles->get_default_vars (if there is a play context)
- group_vars_files[host] (if there is a host context)
- host_vars_files[host] (if there is a host context)
- host->get_vars (if there is a host context)
- fact_cache[host] (if there is a host context)
- vars_cache[host] (if there is a host context)
- play vars (if there is a play context)
- play vars_files (if there's no host context, ignore
file names that cannot be templated)
- task->get_vars (if there is a task context)
- extra vars
'''
vars = defaultdict(dict)
if play:
# first we compile any vars specified in defaults/main.yml
# for all roles within the specified play
for role in play.get_roles():
vars = self._merge_dicts(vars, role.get_default_vars())
if host:
# next, if a host is specified, we load any vars from group_vars
# files and then any vars from host_vars files which may apply to
# this host or the groups it belongs to
for group in host.get_groups():
if group in self._group_vars_files:
vars = self._merge_dicts(vars, self._group_vars_files[group])
host_name = host.get_name()
if host_name in self._host_vars_files:
vars = self._merge_dicts(vars, self._host_vars_files[host_name])
# then we merge in vars specified for this host
vars = self._merge_dicts(vars, host.get_vars())
# next comes the facts cache and the vars cache, respectively
vars = self._merge_dicts(vars, self._fact_cache.get(host.get_name(), dict()))
vars = self._merge_dicts(vars, self._vars_cache.get(host.get_name(), dict()))
if play:
vars = self._merge_dicts(vars, play.get_vars())
for vars_file in play.get_vars_files():
# Try templating the vars_file. If an unknown var error is raised,
# ignore it - unless a host is specified
# TODO ...
data = self._loader.load_from_file(vars_file)
vars = self._merge_dicts(vars, data)
if task:
vars = self._merge_dicts(vars, task.get_vars())
vars = self._merge_dicts(vars, self._extra_vars)
return vars
def _get_inventory_basename(self, path):
'''
Returns the bsaename minus the extension of the given path, so the
bare filename can be matched against host/group names later
'''
(name, ext) = os.path.splitext(os.path.basename(path))
return name
def _load_inventory_file(self, path):
'''
helper function, which loads the file and gets the
basename of the file without the extension
'''
data = self._loader.load_from_file(path)
name = self._get_inventory_basename(path)
return (name, data)
def add_host_vars_file(self, path):
'''
Loads and caches a host_vars file in the _host_vars_files dict,
where the key to that dictionary is the basename of the file, minus
the extension, for matching against a given inventory host name
'''
(name, data) = self._load_inventory_file(path)
self._host_vars_files[name] = data
def add_group_vars_file(self, path):
'''
Loads and caches a host_vars file in the _host_vars_files dict,
where the key to that dictionary is the basename of the file, minus
the extension, for matching against a given inventory host name
'''
(name, data) = self._load_inventory_file(path)
self._group_vars_files[name] = data
def setUp(self):
# FIXME: need to add tests that utilize vault_password
self._loader = DataLoader()
