def test_shell(self):
assert evaluate_expression("$(echo foobar)", self.names) == (True, "foobar")
assert evaluate_expression("$(test -d /thoushaltnotexist)", self.names) == (False, '')
assert evaluate_expression("$(false)", self.names) == (False, '')
assert evaluate_expression("$(true)", self.names) == (True, '')
assert re.match(".*/foo/bar$",
evaluate_expression("$(cd foo; cd bar; pwd; cd ../..)",
self.names)[1])
def test_in(self):
assert evaluate_expression('$nonempty in "foobar"',
self.names) == (True, "foo")
assert evaluate_expression('$nonempty2 in "foobar"',
self.names) == (True, "bar")
assert evaluate_expression('$empty in "foobar"',
self.names) == (True, "")
assert evaluate_expression('$nonempty in "FOOBAR"',
self.names) == (False, "foo")
def test_shell(self):
assert evaluate_expression("$(echo foobar)",
self.names) == (True, "foobar")
assert evaluate_expression("$(test -d /thoushaltnotexist)",
self.names) == (False, '')
assert evaluate_expression("$(false)", self.names) == (False, '')
assert evaluate_expression("$(true)", self.names) == (True, '')
assert re.match(
".*/foo/bar$",
evaluate_expression("$(cd foo; cd bar; pwd; cd ../..)",
self.names)[1])
def _assign_variable(self, variable, comm, kwargs):
"""Assigns *result* of expression to variable. If there are two variables separated by
comma, the first gets assigned *logical result* and the second the *result*.
The variable is then put into kwargs (overwriting original value, if already there).
Note, that unlike other methods, this method has to accept kwargs, not **kwargs.
Even if comm has *logical result* == False, output is still stored and
this method doesn't fail.
Args:
variable: variable (or two variables separated by ",") to assign to
comm: either another variable or command to run
"""
comma_count = variable.count(',')
if comma_count > 1:
raise exceptions.YamlSyntaxError(
'Max two variables allowed on left side.')
res1, res2 = evaluate_expression(comm, kwargs)
if comma_count == 1:
var1, var2 = map(lambda v: self._get_var_name(v),
variable.split(','))
kwargs[var1] = res1
else:
var2 = self._get_var_name(variable)
kwargs[var2] = res2
def _get_section_from_condition(self,
if_section,
else_section=None,
**kwargs):
"""Returns section that should be used from given if/else sections by evaluating given condition.
Args:
if_section - section with if clause
else_section - section that *may* be else clause (just next section after if_section,
this method will check if it really is else); possibly None if not present
Returns:
tuple (<0 or 1>, <True or False>, section), where
- the first member says whether we're going to "if" section (0) or else section (1)
- the second member says whether we should skip next section during further evaluation
(True or False - either we have else to skip, or we don't)
- the third member is the appropriate section to run or None if there is only "if"
clause and condition evaluates to False
"""
# check if else section is really else
skip = True if else_section is not None and else_section[
0] == 'else' else False
if evaluate_expression(if_section[0][2:].strip(), kwargs)[0]:
return (0, skip, if_section[1])
else:
return (1, skip, else_section[1]) if skip else (1, skip, None)
def _get_section_from_condition(self, if_section, else_section=None, **kwargs):
"""Returns section that should be used from given if/else sections by evaluating given condition.
Args:
if_section - section with if clause
else_section - section that *may* be else clause (just next section after if_section,
this method will check if it really is else); possibly None if not present
Returns:
tuple (<0 or 1>, <True or False>, section), where
- the first member says whether we're going to "if" section (0) or else section (1)
- the second member says whether we should skip next section during further evaluation
(True or False - either we have else to skip, or we don't)
- the third member is the appropriate section to run or None if there is only "if"
clause and condition evaluates to False
"""
# check if else section is really else
skip = True if else_section is not None and else_section[0] == 'else' else False
if evaluate_expression(if_section[0][2:].strip(), kwargs)[0]:
return (0, skip, if_section[1])
else:
return (1, skip, else_section[1]) if skip else (1, skip, None)
def _assign_variable(self, variable, comm, kwargs):
"""Assigns *result* of expression to variable. If there are two variables separated by
comma, the first gets assigned *logical result* and the second the *result*.
The variable is then put into kwargs (overwriting original value, if already there).
Note, that unlike other methods, this method has to accept kwargs, not **kwargs.
Even if comm has *logical result* == False, output is still stored and
this method doesn't fail.
Args:
variable: variable (or two variables separated by ",") to assign to
comm: either another variable or command to run
"""
comma_count = variable.count(',')
if comma_count > 1:
raise exceptions.YamlSyntaxError('Max two variables allowed on left side.')
res1, res2 = evaluate_expression(comm, kwargs)
if comma_count == 1:
var1, var2 = map(lambda v: self._get_var_name(v), variable.split(','))
kwargs[var1] = res1
else:
var2 = self._get_var_name(variable)
kwargs[var2] = res2
def test_complex_expression(self):
assert evaluate_expression(
'defined $empty or $empty and \
$(echo -e foo bar "and also baz") or "else $nonempty"',
self.names) == (True, 'else foo')
def test_variable_substitution(self):
assert evaluate_expression('"$nonempty"', self.names) == (True, "foo")
assert evaluate_expression('"$empty"', self.names) == (False, "")
assert evaluate_expression('"$true"', self.names) == (True, "True")
def test_literal(self):
assert evaluate_expression('"foobar"', self.names) == (True, "foobar")
assert evaluate_expression('""', self.names) == (False, "")
def test_complex_expression(self):
assert evaluate_expression('defined $empty or $empty and \
$(echo -e foo bar "and also baz") or "else $nonempty"',
self.names) == (True, 'else foo')
def test_not(self):
assert evaluate_expression("not $true", self.names) == (False, "")
assert evaluate_expression("not $false", self.names) == (True, "")
assert evaluate_expression("not $nonempty", self.names) == (False, "foo")
assert evaluate_expression("not $empty", self.names) == (True, "")
def test_not(self):
assert evaluate_expression("not $true", self.names) == (False, "")
assert evaluate_expression("not $false", self.names) == (True, "")
assert evaluate_expression("not $nonempty",
self.names) == (False, "foo")
assert evaluate_expression("not $empty", self.names) == (True, "")
def test_and(self):
# XXX or should this be (True, "") or (True, "True")
assert evaluate_expression("$true and $true", self.names) == (True, "")
assert evaluate_expression("$true and $false", self.names) == (False, "")
assert evaluate_expression("$false and $true", self.names) == (False, "")
assert evaluate_expression("$false and $false", self.names) == (False, "")
assert evaluate_expression("$nonempty and $nonempty2", self.names) == (True, "bar")
assert evaluate_expression("$nonempty2 and $nonempty", self.names) == (True, "foo")
assert evaluate_expression("$nonempty and $empty", self.names) == (False, "")
assert evaluate_expression("$empty and $nonempty", self.names) == (False, "")
assert evaluate_expression("$nonempty and $true", self.names) == (True, "")
assert evaluate_expression("$true and $nonempty", self.names) == (True, "")
assert evaluate_expression("$empty and $true", self.names) == (False, "")
assert evaluate_expression("$true and $empty", self.names) == (False, "")
assert evaluate_expression("$empty and $empty", self.names) == (False, "")
assert evaluate_expression("$true and $nonempty and $nonempty2", self.names) == (True, "")
assert evaluate_expression("$true and $nonempty and $empty", self.names) == (False, "")
def _run_one_section(self, section, kwargs):
skip_else = False
for i, command_dict in enumerate(section):
if self.stop_flag:
break
for comm_type, comm in command_dict.items():
if comm_type.startswith('call'):
# calling workflow:
# 1) get proper run section (either from self or from snippet)
# 2) if running snippet, add its files to kwargs['__files__']
# 3) actually run
# 4) if running snippet, pop its files from kwargs['__files__']
sect = self._get_section_from_call(comm, 'run')
if sect is None:
logger.warning('Couldn\'t find section to run: {0}.'.format(comm))
continue
if self._is_snippet_call(comm, **kwargs):
# we're calling a snippet => add files and template_dir to kwargs
snippet = yaml_snippet_loader.YamlSnippetLoader.get_snippet_by_name(comm.split('.')[0])
if '__files__' not in kwargs:
kwargs['__files__'] = []
kwargs['__template_dir__'] = []
kwargs['__files__'].append(snippet.get_files_section())
kwargs['__template_dir__'].append(snippet.get_template_dir())
self._run_one_section(sect, copy.deepcopy(kwargs))
if self._is_snippet_call(comm, **kwargs):
kwargs['__files__'].pop()
kwargs['__template_dir__'].pop()
elif comm_type.startswith('$'):
# intentionally pass kwargs as dict, not as keywords
try:
self._assign_variable(comm_type, comm, kwargs)
except exceptions.YamlSyntaxError as e:
logger.error(e)
raise e
elif comm_type.startswith('if'):
possible_else = None
if len(section) > i + 1: # do we have "else" clause?
possible_else = list(section[i + 1].items())[0]
_, skip_else, to_run = self._get_section_from_condition((comm_type, comm), possible_else, **kwargs)
if to_run:
# run with original kwargs, so that they might be changed for code after this if
self._run_one_section(to_run, kwargs)
elif comm_type == 'else':
if not skip_else:
logger.warning('Yaml error: encountered "else" with no associated "if", skipping.')
skip_else = False
elif comm_type.startswith('for'):
# syntax: "for $i in $x: <section> or "for $i in cl_command: <section>"
try:
control_var, expression = self._parse_for(comm_type)
except exceptions.YamlSyntaxError as e:
logger.error(e)
raise e
try:
eval_expression = evaluate_expression()
except exceptions.YamlSyntaxError as e:
logger.log(e)
raise e
for i in eval_expression:
kwargs[control_var] = i
self._run_one_section(comm, kwargs)
elif comm_type.startswith('scl'):
if '__scls__' not in kwargs:
kwargs['__scls__'] = []
# list of lists of scl names
kwargs['__scls__'].append(comm_type.split()[1:])
self._run_one_section(comm, kwargs)
kwargs['__scls__'].pop()
else:
files = kwargs['__files__'][-1] if kwargs.get('__files__', None) else self._files
template_dir = kwargs['__template_dir__'][-1] if kwargs.get('__template_dir__', None) else self.template_dir
run_command(comm_type, CommandFormatter.format(comm_type, comm, template_dir, files, **kwargs), **kwargs)
def test_variable(self):
assert evaluate_expression("$true", self.names) == (True, "")
assert evaluate_expression("$false", self.names) == (False, "")
assert evaluate_expression("$nonempty", self.names) == (True, "foo")
assert evaluate_expression("$empty", self.names) == (False, "")
def test_defined(self):
assert evaluate_expression("defined $nonempty", self.names) == (True, "foo")
assert evaluate_expression("defined $empty", self.names) == (True, "")
assert evaluate_expression("defined $notdefined", self.names) == (False, "")
def test_in(self):
assert evaluate_expression('$nonempty in "foobar"', self.names) == (True, "foo")
assert evaluate_expression('$nonempty2 in "foobar"', self.names) == (True, "bar")
assert evaluate_expression('$empty in "foobar"', self.names) == (True, "")
assert evaluate_expression('$nonempty in "FOOBAR"', self.names) == (False, "foo")
def test_and(self):
# XXX or should this be (True, "") or (True, "True")
assert evaluate_expression("$true and $true", self.names) == (True, "")
assert evaluate_expression("$true and $false",
self.names) == (False, "")
assert evaluate_expression("$false and $true",
self.names) == (False, "")
assert evaluate_expression("$false and $false",
self.names) == (False, "")
assert evaluate_expression("$nonempty and $nonempty2",
self.names) == (True, "bar")
assert evaluate_expression("$nonempty2 and $nonempty",
self.names) == (True, "foo")
assert evaluate_expression("$nonempty and $empty",
self.names) == (False, "")
assert evaluate_expression("$empty and $nonempty",
self.names) == (False, "")
assert evaluate_expression("$nonempty and $true",
self.names) == (True, "")
assert evaluate_expression("$true and $nonempty",
self.names) == (True, "")
assert evaluate_expression("$empty and $true",
self.names) == (False, "")
assert evaluate_expression("$true and $empty",
self.names) == (False, "")
assert evaluate_expression("$empty and $empty",
self.names) == (False, "")
assert evaluate_expression("$true and $nonempty and $nonempty2",
self.names) == (True, "")
assert evaluate_expression("$true and $nonempty and $empty",
self.names) == (False, "")
def test_variable_substitution(self):
assert evaluate_expression('"$nonempty"', self.names) == (True, "foo")
assert evaluate_expression('"$empty"', self.names) == (False, "")
assert evaluate_expression('"$true"', self.names) == (True, "True")
def test_or(self):
assert evaluate_expression("$true or $true", self.names) == (True, "")
assert evaluate_expression("$true or $false", self.names) == (True, "")
assert evaluate_expression("$false or $true", self.names) == (True, "")
assert evaluate_expression("$false or $false",
self.names) == (False, "")
assert evaluate_expression("$nonempty or $nonempty2",
self.names) == (True, "foo")
assert evaluate_expression("$nonempty2 or $nonempty",
self.names) == (True, "bar")
assert evaluate_expression("$nonempty or $empty",
self.names) == (True, "foo")
assert evaluate_expression("$empty or $nonempty",
self.names) == (True, "foo")
assert evaluate_expression("$nonempty or $true",
self.names) == (True, "foo")
assert evaluate_expression("$true or $nonempty",
self.names) == (True, "foo")
assert evaluate_expression("$empty or $true", self.names) == (True, "")
assert evaluate_expression("$true or $empty", self.names) == (True, "")
assert evaluate_expression("$empty or $empty",
self.names) == (False, "")
assert evaluate_expression("$true or $nonempty or $nonempty2",
self.names) == (True, "foo")
assert evaluate_expression("$false or $nonempty or $empty",
self.names) == (True, "foo")
def test_defined(self):
assert evaluate_expression("defined $nonempty",
self.names) == (True, "foo")
assert evaluate_expression("defined $empty", self.names) == (True, "")
assert evaluate_expression("defined $notdefined",
self.names) == (False, "")
def _run_one_section(self, section, kwargs):
skip_else = False
for i, command_dict in enumerate(section):
if self.stop_flag:
break
for comm_type, comm in command_dict.items():
if comm_type.startswith('call'):
# calling workflow:
# 1) get proper run section (either from self or from snippet)
# 2) if running snippet, add its files to kwargs['__files__']
# 3) actually run
# 4) if running snippet, pop its files from kwargs['__files__']
sect = self._get_section_from_call(comm, 'run')
if sect is None:
logger.warning(
'Couldn\'t find section to run: {0}.'.format(comm))
continue
if self._is_snippet_call(comm, **kwargs):
# we're calling a snippet => add files and template_dir to kwargs
snippet = yaml_snippet_loader.YamlSnippetLoader.get_snippet_by_name(
comm.split('.')[0])
if '__files__' not in kwargs:
kwargs['__files__'] = []
kwargs['__template_dir__'] = []
kwargs['__files__'].append(snippet.get_files_section())
kwargs['__template_dir__'].append(
snippet.get_template_dir())
self._run_one_section(sect, copy.deepcopy(kwargs))
if self._is_snippet_call(comm, **kwargs):
kwargs['__files__'].pop()
kwargs['__template_dir__'].pop()
elif comm_type.startswith('$'):
# intentionally pass kwargs as dict, not as keywords
try:
self._assign_variable(comm_type, comm, kwargs)
except exceptions.YamlSyntaxError as e:
logger.error(e)
raise e
elif comm_type.startswith('if'):
possible_else = None
if len(section) > i + 1: # do we have "else" clause?
possible_else = list(section[i + 1].items())[0]
_, skip_else, to_run = self._get_section_from_condition(
(comm_type, comm), possible_else, **kwargs)
if to_run:
# run with original kwargs, so that they might be changed for code after this if
self._run_one_section(to_run, kwargs)
elif comm_type == 'else':
if not skip_else:
logger.warning(
'Yaml error: encountered "else" with no associated "if", skipping.'
)
skip_else = False
elif comm_type.startswith('for'):
# syntax: "for $i in $x: <section> or "for $i in cl_command: <section>"
try:
control_var, expression = self._parse_for(comm_type)
except exceptions.YamlSyntaxError as e:
logger.error(e)
raise e
try:
eval_expression = evaluate_expression()
except exceptions.YamlSyntaxError as e:
logger.log(e)
raise e
for i in eval_expression:
kwargs[control_var] = i
self._run_one_section(comm, kwargs)
elif comm_type.startswith('scl'):
if '__scls__' not in kwargs:
kwargs['__scls__'] = []
# list of lists of scl names
kwargs['__scls__'].append(comm_type.split()[1:])
self._run_one_section(comm, kwargs)
kwargs['__scls__'].pop()
else:
files = kwargs['__files__'][-1] if kwargs.get(
'__files__', None) else self._files
template_dir = kwargs['__template_dir__'][-1] if kwargs.get(
'__template_dir__', None) else self.template_dir
run_command(
comm_type,
CommandFormatter.format(comm_type, comm, template_dir,
files, **kwargs), **kwargs)
def test_variable(self):
assert evaluate_expression("$true", self.names) == (True, "")
assert evaluate_expression("$false", self.names) == (False, "")
assert evaluate_expression("$nonempty", self.names) == (True, "foo")
assert evaluate_expression("$empty", self.names) == (False, "")
def test_literal(self):
assert evaluate_expression('"foobar"', self.names) == (True, "foobar")
assert evaluate_expression('""', self.names) == (False, "")
def test_or(self):
assert evaluate_expression("$true or $true", self.names) == (True, "")
assert evaluate_expression("$true or $false", self.names) == (True, "")
assert evaluate_expression("$false or $true", self.names) == (True, "")
assert evaluate_expression("$false or $false", self.names) == (False, "")
assert evaluate_expression("$nonempty or $nonempty2", self.names) == (True, "foo")
assert evaluate_expression("$nonempty2 or $nonempty", self.names) == (True, "bar")
assert evaluate_expression("$nonempty or $empty", self.names) == (True, "foo")
assert evaluate_expression("$empty or $nonempty", self.names) == (True, "foo")
assert evaluate_expression("$nonempty or $true", self.names) == (True, "foo")
assert evaluate_expression("$true or $nonempty", self.names) == (True, "foo")
assert evaluate_expression("$empty or $true", self.names) == (True, "")
assert evaluate_expression("$true or $empty", self.names) == (True, "")
assert evaluate_expression("$empty or $empty", self.names) == (False, "")
assert evaluate_expression("$true or $nonempty or $nonempty2", self.names) == (True, "foo")
assert evaluate_expression("$false or $nonempty or $empty", self.names) == (True, "foo")
