def dumped_chroot(self, targets):
python_repos = create_subsystem(PythonRepos)
with subsystem_instance(IvySubsystem) as ivy_subsystem:
ivy_bootstrapper = Bootstrapper(ivy_subsystem=ivy_subsystem)
with subsystem_instance(
ThriftBinary.Factory) as thrift_binary_factory:
interpreter_cache = PythonInterpreterCache(
self.python_setup, python_repos)
interpreter_cache.setup()
interpreters = list(
interpreter_cache.matches(
[self.python_setup.interpreter_requirement]))
self.assertGreater(len(interpreters), 0)
interpreter = interpreters[0]
with temporary_dir() as chroot:
pex_builder = PEXBuilder(path=chroot,
interpreter=interpreter)
python_chroot = PythonChroot(
python_setup=self.python_setup,
python_repos=python_repos,
ivy_bootstrapper=ivy_bootstrapper,
thrift_binary_factory=thrift_binary_factory.create,
interpreter=interpreter,
builder=pex_builder,
targets=targets,
platforms=['current'])
try:
python_chroot.dump()
yield pex_builder, python_chroot
finally:
python_chroot.delete()
class PythonTask(Task):
@classmethod
def setup_parser(cls, option_group, args, mkflag):
option_group.add_option(mkflag('timeout'), dest='python_conn_timeout', type='int',
default=0, help='Number of seconds to wait for http connections.')
def __init__(self, context, workdir):
super(PythonTask, self).__init__(context, workdir)
self.conn_timeout = (self.context.options.python_conn_timeout or
self.context.config.getdefault('connection_timeout'))
compatibilities = self.context.options.interpreter or [b'']
self.interpreter_cache = PythonInterpreterCache(self.context.config,
logger=self.context.log.debug)
# We pass in filters=compatibilities because setting up some python versions
# (e.g., 3<=python<3.3) crashes, and this gives us an escape hatch.
self.interpreter_cache.setup(filters=compatibilities)
# Select a default interpreter to use.
self._interpreter = self.select_interpreter(compatibilities)
@property
def interpreter(self):
"""Subclasses can use this if they're fine with the default interpreter (the usual case)."""
return self._interpreter
def select_interpreter(self, compatibilities):
"""Subclasses can use this to be more specific about interpreter selection."""
interpreters = self.interpreter_cache.select_interpreter(
list(self.interpreter_cache.matches(compatibilities)))
if len(interpreters) != 1:
raise TaskError('Unable to detect suitable interpreter.')
interpreter = interpreters[0]
self.context.log.debug('Selected %s' % interpreter)
return interpreter
def dumped_chroot(self, targets):
python_repos = create_subsystem(PythonRepos)
with subsystem_instance(IvySubsystem) as ivy_subsystem:
ivy_bootstrapper = Bootstrapper(ivy_subsystem=ivy_subsystem)
with subsystem_instance(ThriftBinary.Factory) as thrift_binary_factory:
interpreter_cache = PythonInterpreterCache(self.python_setup, python_repos)
interpreter_cache.setup()
interpreters = list(interpreter_cache.matches([self.python_setup.interpreter_requirement]))
self.assertGreater(len(interpreters), 0)
interpreter = interpreters[0]
with temporary_dir() as chroot:
pex_builder = PEXBuilder(path=chroot, interpreter=interpreter)
python_chroot = PythonChroot(python_setup=self.python_setup,
python_repos=python_repos,
ivy_bootstrapper=ivy_bootstrapper,
thrift_binary_factory=thrift_binary_factory.create,
interpreter=interpreter,
builder=pex_builder,
targets=targets,
platforms=['current'])
try:
python_chroot.dump()
yield pex_builder, python_chroot
finally:
python_chroot.delete()
class SetupPythonEnvironment(Task):
"""
Establishes the python intepreter(s) for downstream Python tasks e.g. Resolve, Run, PytestRun.
Populates the product namespace (for typename = 'python'):
'intepreters': ordered list of PythonInterpreter objects
"""
@classmethod
def setup_parser(cls, option_group, args, mkflag):
option_group.add_option(mkflag("force"), dest="python_setup_force",
action="store_true", default=False,
help="Force clean and install.")
option_group.add_option(mkflag("path"), dest="python_setup_paths",
action="append", default=[],
help="Add a path to search for interpreters, by default PATH.")
option_group.add_option(mkflag("interpreter"), dest="python_interpreter",
default=[], action='append',
help="Constrain what Python interpreters to use. Uses Requirement "
"format from pkg_resources, e.g. 'CPython>=2.6,<3' or 'PyPy'. "
"By default, no constraints are used. Multiple constraints may "
"be added. They will be ORed together.")
option_group.add_option(mkflag("multi"), dest="python_multi",
default=False, action='store_true',
help="Allow multiple interpreters to be bound to an upstream chroot.")
def __init__(self, context, workdir):
context.products.require('python')
self._cache = PythonInterpreterCache(context.config, logger=context.log.debug)
super(SetupPythonEnvironment, self).__init__(context, workdir)
def execute(self):
ifilters = self.context.options.python_interpreter
self._cache.setup(force=self.context.options.python_setup_force,
paths=self.context.options.python_setup_paths,
filters=ifilters or [b''])
all_interpreters = set(self._cache.interpreters)
for target in self.context.targets(is_python_root):
self.context.log.info('Setting up interpreters for %s' % target)
closure = target.closure()
self.context.log.debug(' - Target closure: %d targets' % len(closure))
target_compatibilities = [
set(self._cache.matches(getattr(closure_target, 'compatibility', [''])))
for closure_target in closure]
target_compatibilities = reduce(set.intersection, target_compatibilities, all_interpreters)
self.context.log.debug(' - Target minimum compatibility: %s' % (
' '.join(interp.version_string for interp in target_compatibilities)))
interpreters = self._cache.select_interpreter(target_compatibilities,
allow_multiple=self.context.options.python_multi)
self.context.log.debug(' - Selected: %s' % interpreters)
if not interpreters:
raise TaskError('No compatible interpreters for %s' % target)
target.interpreters = interpreters
class PythonTask(Task):
@classmethod
def setup_parser(cls, option_group, args, mkflag):
option_group.add_option(
mkflag('timeout'),
dest='python_conn_timeout',
type='int',
default=0,
help='Number of seconds to wait for http connections.')
def __init__(self, context, workdir):
super(PythonTask, self).__init__(context, workdir)
self.conn_timeout = (
self.context.options.python_conn_timeout
or self.context.config.getdefault('connection_timeout'))
compatibilities = self.context.options.interpreter or [b'']
self.interpreter_cache = PythonInterpreterCache(
self.context.config, logger=self.context.log.debug)
# We pass in filters=compatibilities because setting up some python versions
# (e.g., 3<=python<3.3) crashes, and this gives us an escape hatch.
self.interpreter_cache.setup(filters=compatibilities)
# Select a default interpreter to use.
self._interpreter = self.select_interpreter(compatibilities)
@property
def interpreter(self):
"""Subclasses can use this if they're fine with the default interpreter (the usual case)."""
return self._interpreter
def select_interpreter(self, compatibilities):
"""Subclasses can use this to be more specific about interpreter selection."""
interpreters = self.interpreter_cache.select_interpreter(
list(self.interpreter_cache.matches(compatibilities)))
if len(interpreters) != 1:
raise TaskError('Unable to detect suitable interpreter.')
interpreter = interpreters[0]
self.context.log.debug('Selected %s' % interpreter)
return interpreter
class Build(Command):
"""Builds a specified target."""
__command__ = 'build'
def setup_parser(self, parser, args):
parser.set_usage("\n"
" %prog build (options) [spec] (build args)\n"
" %prog build (options) [spec]... -- (build args)")
parser.add_option("-t", "--timeout", dest="conn_timeout", type="int",
default=Config.load().getdefault('connection_timeout'),
help="Number of seconds to wait for http connections.")
parser.add_option('-i', '--interpreter', dest='interpreters', default=[], action='append',
help="Constrain what Python interpreters to use. Uses Requirement "
"format from pkg_resources, e.g. 'CPython>=2.6,<3' or 'PyPy'. "
"By default, no constraints are used. Multiple constraints may "
"be added. They will be ORed together.")
parser.add_option('-v', '--verbose', dest='verbose', default=False, action='store_true',
help='Show verbose output.')
parser.add_option('-f', '--fast', dest='fast', default=False, action='store_true',
help='Run tests in a single chroot.')
parser.disable_interspersed_args()
parser.epilog = ('Builds the specified Python target(s). Use ./pants goal for JVM and other '
'targets.')
def __init__(self, *args, **kwargs):
super(Build, self).__init__(*args, **kwargs)
if not self.args:
self.error("A spec argument is required")
self.config = Config.load()
interpreters = self.options.interpreters or [b'']
self.interpreter_cache = PythonInterpreterCache(self.config, logger=self.debug)
self.interpreter_cache.setup(filters=interpreters)
interpreters = self.interpreter_cache.select_interpreter(
list(self.interpreter_cache.matches(interpreters)))
if len(interpreters) != 1:
self.error('Unable to detect suitable interpreter.')
else:
self.debug('Selected %s' % interpreters[0])
self.interpreter = interpreters[0]
try:
specs_end = self.args.index('--')
if len(self.args) > specs_end:
self.build_args = self.args[specs_end+1:len(self.args)+1]
else:
self.build_args = []
except ValueError:
specs_end = 1
self.build_args = self.args[1:] if len(self.args) > 1 else []
self.targets = OrderedSet()
spec_parser = CmdLineSpecParser(self.root_dir, self.build_file_parser)
self.top_level_addresses = set()
specs = self.args[0:specs_end]
addresses = spec_parser.parse_addresses(specs)
for address in addresses:
self.top_level_addresses.add(address)
try:
self.build_file_parser.inject_address_closure_into_build_graph(address, self.build_graph)
target = self.build_graph.get_target(address)
except:
self.error("Problem parsing BUILD target %s: %s" % (address, traceback.format_exc()))
if not target:
self.error("Target %s does not exist" % address)
transitive_targets = self.build_graph.transitive_subgraph_of_addresses([target.address])
for transitive_target in transitive_targets:
self.targets.add(transitive_target)
self.targets = [target for target in self.targets if target.is_python]
def debug(self, message):
if self.options.verbose:
print(message, file=sys.stderr)
def execute(self):
print("Build operating on top level addresses: %s" % self.top_level_addresses)
python_targets = OrderedSet()
for target in self.targets:
if target.is_python:
python_targets.add(target)
else:
self.error("Cannot build target %s" % target)
if python_targets:
status = self._python_build(python_targets)
else:
status = -1
return status
def _python_build(self, targets):
try:
executor = PythonBuilder(self.run_tracker)
return executor.build(
targets,
self.build_args,
interpreter=self.interpreter,
conn_timeout=self.options.conn_timeout,
fast_tests=self.options.fast)
except:
self.error("Problem executing PythonBuilder for targets %s: %s" % (targets,
traceback.format_exc()))
class Py(Command):
"""Python chroot manipulation."""
__command__ = 'py'
def setup_parser(self, parser, args):
parser.set_usage('\n'
' %prog py (options) [spec] args\n')
parser.disable_interspersed_args()
parser.add_option('-t', '--timeout', dest='conn_timeout', type='int',
default=Config.from_cache().getdefault('connection_timeout'),
help='Number of seconds to wait for http connections.')
parser.add_option('--pex', dest='pex', default=False, action='store_true',
help='Dump a .pex of this chroot instead of attempting to execute it.')
parser.add_option('--ipython', dest='ipython', default=False, action='store_true',
help='Run the target environment in an IPython interpreter.')
parser.add_option('-r', '--req', dest='extra_requirements', default=[], action='append',
help='Additional Python requirements to add to this chroot.')
parser.add_option('-i', '--interpreter', dest='interpreters', default=[], action='append',
help="Constrain what Python interpreters to use. Uses Requirement "
"format from pkg_resources, e.g. 'CPython>=2.6,<3' or 'PyPy'. "
"By default, no constraints are used. Multiple constraints may "
"be added. They will be ORed together.")
parser.add_option('-e', '--entry_point', dest='entry_point', default=None,
help='The entry point for the generated PEX.')
parser.add_option('-v', '--verbose', dest='verbose', default=False, action='store_true',
help='Show verbose output.')
parser.epilog = """Interact with the chroot of the specified target."""
def __init__(self, *args, **kwargs):
super(Py, self).__init__(*args, **kwargs)
self.binary = None
self.targets = []
self.extra_requirements = []
self.config = Config.from_cache()
interpreters = self.old_options.interpreters or [b'']
self.interpreter_cache = PythonInterpreterCache(self.config, logger=self.debug)
self.interpreter_cache.setup(filters=interpreters)
interpreters = self.interpreter_cache.select_interpreter(
list(self.interpreter_cache.matches(interpreters)))
if len(interpreters) != 1:
self.error('Unable to detect suitable interpreter.')
self.interpreter = interpreters[0]
for req in self.old_options.extra_requirements:
self.extra_requirements.append(PythonRequirement(req, use_2to3=True))
# We parse each arg in the context of the cli usage:
# ./pants command (options) [spec] (build args)
# ./pants command (options) [spec]... -- (build args)
# Our command token and our options are parsed out so we see args of the form:
# [spec] (build args)
# [spec]... -- (build args)
for k in range(len(self.args)):
arg = self.args.pop(0)
if arg == '--':
break
def not_a_target(debug_msg):
self.debug('Not a target, assuming option: %s.' % debug_msg)
# We failed to parse the arg as a target or else it was in valid address format but did not
# correspond to a real target. Assume this is the 1st of the build args and terminate
# processing args for target addresses.
self.args.insert(0, arg)
try:
print(self.root_dir, arg, file=sys.stderr)
self.build_graph.inject_spec_closure(arg)
spec_path, target_name = parse_spec(arg)
build_file = BuildFile.from_cache(self.root_dir, spec_path)
address = BuildFileAddress(build_file, target_name)
target = self.build_graph.get_target(address)
if target is None:
not_a_target(debug_msg='Unrecognized target')
break
except Exception as e:
not_a_target(debug_msg=e)
break
if isinstance(target, PythonBinary):
if self.binary:
self.error('Can only process 1 binary target. Found %s and %s.' % (self.binary, target))
else:
self.binary = target
self.targets.append(target)
if not self.targets:
self.error('No valid targets specified!')
def debug(self, message):
if self.old_options.verbose:
print(message, file=sys.stderr)
def execute(self):
if self.old_options.pex and self.old_options.ipython:
self.error('Cannot specify both --pex and --ipython!')
if self.old_options.entry_point and self.old_options.ipython:
self.error('Cannot specify both --entry_point and --ipython!')
if self.old_options.verbose:
print('Build operating on targets: %s' % ' '.join(str(target) for target in self.targets))
builder = PEXBuilder(tempfile.mkdtemp(), interpreter=self.interpreter,
pex_info=self.binary.pexinfo if self.binary else None)
if self.old_options.entry_point:
builder.set_entry_point(self.old_options.entry_point)
if self.old_options.ipython:
if not self.config.has_section('python-ipython'):
self.error('No python-ipython sections defined in your pants.ini!')
builder.info.entry_point = self.config.get('python-ipython', 'entry_point')
if builder.info.entry_point is None:
self.error('Must specify entry_point for IPython in the python-ipython section '
'of your pants.ini!')
requirements = self.config.getlist('python-ipython', 'requirements', default=[])
for requirement in requirements:
self.extra_requirements.append(PythonRequirement(requirement))
executor = PythonChroot(
targets=self.targets,
extra_requirements=self.extra_requirements,
builder=builder,
platforms=self.binary.platforms if self.binary else None,
interpreter=self.interpreter,
conn_timeout=self.old_options.conn_timeout)
executor.dump()
if self.old_options.pex:
pex_name = self.binary.name if self.binary else Target.maybe_readable_identify(self.targets)
pex_path = os.path.join(self.root_dir, 'dist', '%s.pex' % pex_name)
builder.build(pex_path)
print('Wrote %s' % pex_path)
return 0
else:
builder.freeze()
pex = PEX(builder.path(), interpreter=self.interpreter)
po = pex.run(args=list(self.args), blocking=False)
try:
return po.wait()
except KeyboardInterrupt:
po.send_signal(signal.SIGINT)
raise
class Build(Command):
"""Builds a specified target."""
__command__ = 'build'
def setup_parser(self, parser, args):
parser.set_usage("\n"
" %prog build (options) [spec] (build args)\n"
" %prog build (options) [spec]... -- (build args)")
parser.add_option(
"-t",
"--timeout",
dest="conn_timeout",
type="int",
default=Config.load().getdefault('connection_timeout'),
help="Number of seconds to wait for http connections.")
parser.add_option(
'-i',
'--interpreter',
dest='interpreters',
default=[],
action='append',
help="Constrain what Python interpreters to use. Uses Requirement "
"format from pkg_resources, e.g. 'CPython>=2.6,<3' or 'PyPy'. "
"By default, no constraints are used. Multiple constraints may "
"be added. They will be ORed together.")
parser.add_option('-v',
'--verbose',
dest='verbose',
default=False,
action='store_true',
help='Show verbose output.')
parser.add_option('-f',
'--fast',
dest='fast',
default=False,
action='store_true',
help='Run tests in a single chroot.')
parser.disable_interspersed_args()
parser.epilog = (
'Builds the specified Python target(s). Use ./pants goal for JVM and other '
'targets.')
def __init__(self, *args, **kwargs):
super(Build, self).__init__(*args, **kwargs)
if not self.args:
self.error("A spec argument is required")
self.config = Config.load()
interpreters = self.options.interpreters or [b'']
self.interpreter_cache = PythonInterpreterCache(self.config,
logger=self.debug)
self.interpreter_cache.setup(filters=interpreters)
interpreters = self.interpreter_cache.select_interpreter(
list(self.interpreter_cache.matches(interpreters)))
if len(interpreters) != 1:
self.error('Unable to detect suitable interpreter.')
else:
self.debug('Selected %s' % interpreters[0])
self.interpreter = interpreters[0]
try:
specs_end = self.args.index('--')
if len(self.args) > specs_end:
self.build_args = self.args[specs_end + 1:len(self.args) + 1]
else:
self.build_args = []
except ValueError:
specs_end = 1
self.build_args = self.args[1:] if len(self.args) > 1 else []
self.targets = OrderedSet()
spec_parser = SpecParser(self.root_dir, self.build_file_parser)
self.top_level_addresses = set()
for spec in self.args[0:specs_end]:
try:
addresses = spec_parser.parse_addresses(spec)
except:
self.error("Problem parsing spec %s: %s" %
(spec, traceback.format_exc()))
for address in addresses:
self.top_level_addresses.add(address)
try:
self.build_file_parser.inject_address_closure_into_build_graph(
address, self.build_graph)
target = self.build_graph.get_target(address)
except:
self.error("Problem parsing BUILD target %s: %s" %
(address, traceback.format_exc()))
if not target:
self.error("Target %s does not exist" % address)
transitive_targets = self.build_graph.transitive_subgraph_of_addresses(
[target.address])
for transitive_target in transitive_targets:
self.targets.add(transitive_target)
self.targets = [target for target in self.targets if target.is_python]
def debug(self, message):
if self.options.verbose:
print(message, file=sys.stderr)
def execute(self):
print("Build operating on top level addresses: %s" %
self.top_level_addresses)
python_targets = OrderedSet()
for target in self.targets:
if target.is_python:
python_targets.add(target)
else:
self.error("Cannot build target %s" % target)
if python_targets:
status = self._python_build(python_targets)
else:
status = -1
return status
def _python_build(self, targets):
try:
executor = PythonBuilder(self.run_tracker)
return executor.build(targets,
self.build_args,
interpreter=self.interpreter,
conn_timeout=self.options.conn_timeout,
fast_tests=self.options.fast)
except:
self.error("Problem executing PythonBuilder for targets %s: %s" %
(targets, traceback.format_exc()))
class PythonTask(Task):
@classmethod
def setup_parser(cls, option_group, args, mkflag):
option_group.add_option(mkflag('timeout'), dest='python_conn_timeout', type='int',
default=0, help='Number of seconds to wait for http connections.')
def __init__(self, *args, **kwargs):
super(PythonTask, self).__init__(*args, **kwargs)
self.conn_timeout = (self.context.options.python_conn_timeout or
self.context.config.getdefault('connection_timeout'))
compatibilities = self.context.options.interpreter or [b'']
self.interpreter_cache = PythonInterpreterCache(self.context.config,
logger=self.context.log.debug)
# We pass in filters=compatibilities because setting up some python versions
# (e.g., 3<=python<3.3) crashes, and this gives us an escape hatch.
self.interpreter_cache.setup(filters=compatibilities)
# Select a default interpreter to use.
self._interpreter = self.select_interpreter(compatibilities)
@property
def interpreter(self):
"""Subclasses can use this if they're fine with the default interpreter (the usual case)."""
return self._interpreter
def select_interpreter_for_targets(self, targets):
"""Pick an interpreter compatible with all the specified targets."""
allowed_interpreters = OrderedSet(self.interpreter_cache.interpreters)
targets_with_compatibilities = [] # Used only for error messages.
# Constrain allowed_interpreters based on each target's compatibility requirements.
for target in targets:
if target.is_python and hasattr(target, 'compatibility') and target.compatibility:
targets_with_compatibilities.append(target)
compatible_with_target = list(self.interpreter_cache.matches(target.compatibility))
allowed_interpreters &= compatible_with_target
if not allowed_interpreters:
# Create a helpful error message.
unique_compatibilities = set(tuple(t.compatibility) for t in targets_with_compatibilities)
unique_compatibilities_strs = [','.join(x) for x in unique_compatibilities if x]
targets_with_compatibilities_strs = [str(t) for t in targets_with_compatibilities]
raise TaskError('Unable to detect a suitable interpreter for compatibilities: %s '
'(Conflicting targets: %s)' % (' && '.join(unique_compatibilities_strs),
', '.join(targets_with_compatibilities_strs)))
# Return the lowest compatible interpreter.
return self.interpreter_cache.select_interpreter(allowed_interpreters)[0]
def select_interpreter(self, filters):
"""Subclasses can use this to be more specific about interpreter selection."""
interpreters = self.interpreter_cache.select_interpreter(
list(self.interpreter_cache.matches(filters)))
if len(interpreters) != 1:
raise TaskError('Unable to detect a suitable interpreter.')
interpreter = interpreters[0]
self.context.log.debug('Selected %s' % interpreter)
return interpreter
@contextmanager
def temporary_pex_builder(self, interpreter=None, pex_info=None, parent_dir=None):
"""Yields a PEXBuilder and cleans up its chroot when it goes out of context."""
path = tempfile.mkdtemp(dir=parent_dir)
builder = PEXBuilder(path=path, interpreter=interpreter, pex_info=pex_info)
yield builder
builder.chroot().delete()
class Py(Command):
"""Python chroot manipulation."""
__command__ = 'py'
def setup_parser(self, parser, args):
parser.set_usage('\n' ' %prog py (options) [spec] args\n')
parser.disable_interspersed_args()
parser.add_option(
'-t',
'--timeout',
dest='conn_timeout',
type='int',
default=Config.load().getdefault('connection_timeout'),
help='Number of seconds to wait for http connections.')
parser.add_option(
'--pex',
dest='pex',
default=False,
action='store_true',
help=
'Dump a .pex of this chroot instead of attempting to execute it.')
parser.add_option(
'--ipython',
dest='ipython',
default=False,
action='store_true',
help='Run the target environment in an IPython interpreter.')
parser.add_option(
'-r',
'--req',
dest='extra_requirements',
default=[],
action='append',
help='Additional Python requirements to add to this chroot.')
parser.add_option(
'-i',
'--interpreter',
dest='interpreters',
default=[],
action='append',
help="Constrain what Python interpreters to use. Uses Requirement "
"format from pkg_resources, e.g. 'CPython>=2.6,<3' or 'PyPy'. "
"By default, no constraints are used. Multiple constraints may "
"be added. They will be ORed together.")
parser.add_option('-e',
'--entry_point',
dest='entry_point',
default=None,
help='The entry point for the generated PEX.')
parser.add_option('-v',
'--verbose',
dest='verbose',
default=False,
action='store_true',
help='Show verbose output.')
parser.epilog = """Interact with the chroot of the specified target."""
def __init__(self, run_tracker, root_dir, parser, argv, build_file_parser,
build_graph):
Command.__init__(self, run_tracker, root_dir, parser, argv,
build_file_parser, build_graph)
self.binary = None
self.targets = []
self.extra_requirements = []
self.config = Config.load()
interpreters = self.options.interpreters or [b'']
self.interpreter_cache = PythonInterpreterCache(self.config,
logger=self.debug)
self.interpreter_cache.setup(filters=interpreters)
interpreters = self.interpreter_cache.select_interpreter(
list(self.interpreter_cache.matches(interpreters)))
if len(interpreters) != 1:
self.error('Unable to detect suitable interpreter.')
self.interpreter = interpreters[0]
for req in self.options.extra_requirements:
self.extra_requirements.append(
PythonRequirement(req, use_2to3=True))
# We parse each arg in the context of the cli usage:
# ./pants command (options) [spec] (build args)
# ./pants command (options) [spec]... -- (build args)
# Our command token and our options are parsed out so we see args of the form:
# [spec] (build args)
# [spec]... -- (build args)
for k in range(len(self.args)):
arg = self.args.pop(0)
if arg == '--':
break
def not_a_target(debug_msg):
self.debug('Not a target, assuming option: %s.' % debug_msg)
# We failed to parse the arg as a target or else it was in valid address format but did not
# correspond to a real target. Assume this is the 1st of the build args and terminate
# processing args for target addresses.
self.args.insert(0, arg)
try:
print(root_dir, arg)
self.build_file_parser.inject_spec_closure_into_build_graph(
arg, self.build_graph)
spec_path, target_name = parse_spec(arg)
build_file = BuildFile(root_dir, spec_path)
address = BuildFileAddress(build_file, target_name)
target = self.build_graph.get_target(address)
if target is None:
not_a_target(debug_msg='Unrecognized target')
break
except Exception as e:
not_a_target(debug_msg=e)
break
if isinstance(target, PythonBinary):
if self.binary:
self.error(
'Can only process 1 binary target. Found %s and %s.' %
(self.binary, target))
else:
self.binary = target
self.targets.append(target)
if not self.targets:
self.error('No valid targets specified!')
def debug(self, message):
if self.options.verbose:
print(message, file=sys.stderr)
def execute(self):
if self.options.pex and self.options.ipython:
self.error('Cannot specify both --pex and --ipython!')
if self.options.entry_point and self.options.ipython:
self.error('Cannot specify both --entry_point and --ipython!')
if self.options.verbose:
print('Build operating on targets: %s' %
' '.join(str(target) for target in self.targets))
builder = PEXBuilder(
tempfile.mkdtemp(),
interpreter=self.interpreter,
pex_info=self.binary.pexinfo if self.binary else None)
if self.options.entry_point:
builder.set_entry_point(self.options.entry_point)
if self.options.ipython:
if not self.config.has_section('python-ipython'):
self.error(
'No python-ipython sections defined in your pants.ini!')
builder.info.entry_point = self.config.get('python-ipython',
'entry_point')
if builder.info.entry_point is None:
self.error(
'Must specify entry_point for IPython in the python-ipython section '
'of your pants.ini!')
requirements = self.config.getlist('python-ipython',
'requirements',
default=[])
for requirement in requirements:
self.extra_requirements.append(PythonRequirement(requirement))
executor = PythonChroot(
targets=self.targets,
extra_requirements=self.extra_requirements,
builder=builder,
platforms=self.binary.platforms if self.binary else None,
interpreter=self.interpreter,
conn_timeout=self.options.conn_timeout)
executor.dump()
if self.options.pex:
pex_name = self.binary.name if self.binary else Target.maybe_readable_identify(
self.targets)
pex_path = os.path.join(self.root_dir, 'dist', '%s.pex' % pex_name)
builder.build(pex_path)
print('Wrote %s' % pex_path)
return 0
else:
builder.freeze()
pex = PEX(builder.path(), interpreter=self.interpreter)
po = pex.run(args=list(self.args), blocking=False)
try:
return po.wait()
except KeyboardInterrupt:
po.send_signal(signal.SIGINT)
raise
class SetupPythonEnvironment(Task):
"""
Establishes the python intepreter(s) for downstream Python tasks e.g. Resolve, Run, PytestRun.
Populates the product namespace (for typename = 'python'):
'intepreters': ordered list of PythonInterpreter objects
"""
@classmethod
def setup_parser(cls, option_group, args, mkflag):
option_group.add_option(mkflag("force"),
dest="python_setup_force",
action="store_true",
default=False,
help="Force clean and install.")
option_group.add_option(
mkflag("path"),
dest="python_setup_paths",
action="append",
default=[],
help="Add a path to search for interpreters, by default PATH.")
option_group.add_option(
mkflag("interpreter"),
dest="python_interpreter",
default=[],
action='append',
help="Constrain what Python interpreters to use. Uses Requirement "
"format from pkg_resources, e.g. 'CPython>=2.6,<3' or 'PyPy'. "
"By default, no constraints are used. Multiple constraints may "
"be added. They will be ORed together.")
option_group.add_option(
mkflag("multi"),
dest="python_multi",
default=False,
action='store_true',
help=
"Allow multiple interpreters to be bound to an upstream chroot.")
def __init__(self, context, workdir):
context.products.require('python')
self._cache = PythonInterpreterCache(context.config,
logger=context.log.debug)
super(SetupPythonEnvironment, self).__init__(context, workdir)
def execute(self):
ifilters = self.context.options.python_interpreter
self._cache.setup(force=self.context.options.python_setup_force,
paths=self.context.options.python_setup_paths,
filters=ifilters or [b''])
all_interpreters = set(self._cache.interpreters)
for target in self.context.targets(is_python_root):
self.context.log.info('Setting up interpreters for %s' % target)
closure = target.closure()
self.context.log.debug(' - Target closure: %d targets' %
len(closure))
target_compatibilities = [
set(
self._cache.matches(
getattr(closure_target, 'compatibility', [''])))
for closure_target in closure
]
target_compatibilities = reduce(set.intersection,
target_compatibilities,
all_interpreters)
self.context.log.debug(
' - Target minimum compatibility: %s' %
(' '.join(interp.version_string
for interp in target_compatibilities)))
interpreters = self._cache.select_interpreter(
target_compatibilities,
allow_multiple=self.context.options.python_multi)
self.context.log.debug(' - Selected: %s' % interpreters)
if not interpreters:
raise TaskError('No compatible interpreters for %s' % target)
target.interpreters = interpreters
