def execute(self):
interpreter = None
python_tgts = self.context.targets(
lambda tgt: isinstance(tgt, PythonTarget))
fs = PythonInterpreterFingerprintStrategy(task=self)
with self.invalidated(python_tgts,
fingerprint_strategy=fs) as invalidation_check:
# If there are no relevant targets, we still go through the motions of selecting
# an interpreter, to prevent downstream tasks from having to check for this special case.
if invalidation_check.all_vts:
target_set_id = VersionedTargetSet.from_versioned_targets(
invalidation_check.all_vts).cache_key.hash
else:
target_set_id = 'no_targets'
interpreter_path_file = os.path.join(self.workdir, target_set_id,
'interpreter.path')
if not os.path.exists(interpreter_path_file):
interpreter_cache = PythonInterpreterCache(
PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=self.context.log.debug)
# We filter the interpreter cache itself (and not just the interpreters we pull from it)
# because setting up some python versions (e.g., 3<=python<3.3) crashes, and this gives us
# an escape hatch.
filters = self.get_options().constraints or [b'']
# Cache setup's requirement fetching can hang if run concurrently by another pants proc.
self.context.acquire_lock()
try:
interpreter_cache.setup(filters=filters)
finally:
self.context.release_lock()
interpreter = interpreter_cache.select_interpreter_for_targets(
python_tgts)
safe_mkdir_for(interpreter_path_file)
with open(interpreter_path_file, 'w') as outfile:
outfile.write(b'{}\t{}\n'.format(
interpreter.binary, str(interpreter.identity)))
for dist, location in interpreter.extras.items():
dist_name, dist_version = dist
outfile.write(b'{}\t{}\t{}\n'.format(
dist_name, dist_version, location))
if not interpreter:
with open(interpreter_path_file, 'r') as infile:
lines = infile.readlines()
binary, identity = lines[0].strip().split('\t')
extras = {}
for line in lines[1:]:
dist_name, dist_version, location = line.strip().split(
'\t')
extras[(dist_name, dist_version)] = location
interpreter = PythonInterpreter(binary,
PythonIdentity.from_path(identity),
extras)
self.context.products.get_data(PythonInterpreter, lambda: 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()
def _resolve_requirements(self, target_roots, options=None):
with temporary_dir() as cache_dir:
options = options or {}
options.setdefault(PythonSetup.options_scope,
{})['interpreter_cache_dir'] = cache_dir
context = self.context(target_roots=target_roots,
options=options,
for_subsystems=[PythonSetup, PythonRepos])
# We must get an interpreter via the cache, instead of using PythonInterpreter.get() directly,
# to ensure that the interpreter has setuptools and wheel support.
interpreter = PythonInterpreter.get()
interpreter_cache = PythonInterpreterCache(
PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=context.log.debug)
interpreters = interpreter_cache.setup(
paths=[os.path.dirname(interpreter.binary)],
filters=[str(interpreter.identity.requirement)])
context.products.get_data(PythonInterpreter,
lambda: interpreters[0])
task = self.create_task(context)
task.execute()
return context.products.get_data(
ResolveRequirements.REQUIREMENTS_PEX)
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 dumped_chroot(self, targets):
# TODO(benjy): We shouldn't need to mention DistributionLocator here, as IvySubsystem
# declares it as a dependency. However if we don't then test_antlr() below fails on
# uninitialized options for that subsystem. Hopefully my pending (as of 9/2016) change
# to clean up how we initialize and create instances of subsystems in tests will make
# this problem go away.
self.context(for_subsystems=[PythonRepos, PythonSetup, IvySubsystem,
DistributionLocator, ThriftBinary.Factory, BinaryUtil.Factory])
python_repos = PythonRepos.global_instance()
ivy_bootstrapper = Bootstrapper(ivy_subsystem=IvySubsystem.global_instance())
thrift_binary_factory = ThriftBinary.Factory.global_instance().create
interpreter_cache = PythonInterpreterCache(self.python_setup, python_repos)
interpreter = interpreter_cache.select_interpreter_for_targets(targets)
self.assertIsNotNone(interpreter)
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,
interpreter=interpreter,
builder=pex_builder,
targets=targets,
platforms=['current'])
try:
python_chroot.dump()
yield pex_builder, python_chroot
finally:
python_chroot.delete()
def test_setup_using_eggs(self):
def link_egg(repo_root, requirement):
existing_dist_location = self._interpreter.get_location(
requirement)
if existing_dist_location is not None:
existing_dist = Package.from_href(existing_dist_location)
requirement = '{}=={}'.format(existing_dist.name,
existing_dist.raw_version)
distributions = resolve([requirement],
interpreter=self._interpreter,
precedence=(EggPackage, SourcePackage))
self.assertEqual(1, len(distributions))
dist_location = distributions[0].location
self.assertRegexpMatches(dist_location, r'\.egg$')
os.symlink(
dist_location,
os.path.join(repo_root, os.path.basename(dist_location)))
return Package.from_href(dist_location).raw_version
with temporary_dir() as root:
egg_dir = os.path.join(root, 'eggs')
os.makedirs(egg_dir)
setuptools_version = link_egg(egg_dir, 'setuptools')
wheel_version = link_egg(egg_dir, 'wheel')
interpreter_requirement = self._interpreter.identity.requirement
python_setup, python_repos = self.create_python_subsystems(
setup_options={
'interpreter_cache_dir': None,
'pants_workdir': os.path.join(root, 'workdir'),
'constraints': [interpreter_requirement],
'setuptools_version': setuptools_version,
'wheel_version': wheel_version,
},
repos_options={
'indexes': [],
'repos': [egg_dir],
})
cache = PythonInterpreterCache(python_setup=python_setup,
python_repos=python_repos)
interpereters = cache.setup(
paths=[os.path.dirname(self._interpreter.binary)],
filters=[str(interpreter_requirement)])
self.assertGreater(len(interpereters), 0)
def assert_egg_extra(interpreter, name, version):
location = interpreter.get_location('{}=={}'.format(
name, version))
self.assertIsNotNone(location)
self.assertIsInstance(Package.from_href(location), EggPackage)
for interpreter in interpereters:
assert_egg_extra(interpreter, 'setuptools', setuptools_version)
assert_egg_extra(interpreter, 'wheel', wheel_version)
def _setup_cache_at(self, path, constraints=None):
setup_options = {'interpreter_cache_dir': path}
if constraints:
setup_options.update(interpreter_constraints=constraints)
python_setup, python_repos = self.create_python_subsystems(
setup_options=setup_options)
return PythonInterpreterCache(python_setup=python_setup,
python_repos=python_repos)
def test_namespace_effective(self):
self.create_file('src/thrift/com/foo/one.thrift',
contents=dedent("""
namespace py foo.bar
struct One {}
"""))
one = self.make_target(spec='src/thrift/com/foo:one',
target_type=PythonThriftLibrary,
sources=['one.thrift'])
apache_thrift_gen, synthetic_target_one = self.generate_single_thrift_target(
one)
self.create_file('src/thrift2/com/foo/two.thrift',
contents=dedent("""
namespace py foo.baz
struct Two {}
"""))
two = self.make_target(spec='src/thrift2/com/foo:two',
target_type=PythonThriftLibrary,
sources=['two.thrift'])
_, synthetic_target_two = self.generate_single_thrift_target(two)
# Confirm separate PYTHONPATH entries, which we need to test namespace packages.
self.assertNotEqual(synthetic_target_one.target_base,
synthetic_target_two.target_base)
targets = (synthetic_target_one, synthetic_target_two)
python_repos = global_subsystem_instance(PythonRepos)
python_setup = global_subsystem_instance(PythonSetup)
interpreter_cache = PythonInterpreterCache(python_setup, python_repos)
interpreter = interpreter_cache.select_interpreter_for_targets(targets)
pythonpath = [
os.path.join(get_buildroot(), t.target_base) for t in targets
]
for dist in resolve(
['thrift=={}'.format(self.get_thrift_version(apache_thrift_gen))],
interpreter=interpreter,
context=python_repos.get_network_context(),
fetchers=python_repos.get_fetchers()):
pythonpath.append(dist.location)
process = subprocess.Popen([
interpreter.binary, '-c',
'from foo.bar.ttypes import One; from foo.baz.ttypes import Two'
],
env={
'PYTHONPATH':
os.pathsep.join(pythonpath)
},
stderr=subprocess.PIPE)
_, stderr = process.communicate()
self.assertEqual(0, process.returncode, stderr)
def _cache_current_interpreter(self):
cache = PythonInterpreterCache(self.config())
# We only need to cache the current interpreter, avoid caching for every interpreter on the
# PATH.
current_interpreter = PythonInterpreter.get()
for cached_interpreter in cache.setup(
filters=[current_interpreter.identity.requirement]):
if cached_interpreter == current_interpreter:
return cached_interpreter
raise RuntimeError('Could not find suitable interpreter to run tests.')
def _interpreter_cache(self):
interpreter_cache = PythonInterpreterCache(
PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=self.context.log.debug)
# Cache setup's requirement fetching can hang if run concurrently by another pants proc.
self.context.acquire_lock()
try:
interpreter_cache.setup()
finally:
self.context.release_lock()
return interpreter_cache
def _cache_current_interpreter(self):
cache = PythonInterpreterCache(self.config())
# We only need to cache the current interpreter, avoid caching for every interpreter on the
# PATH.
current_interpreter = PythonInterpreter.get()
current_id = (current_interpreter.binary, current_interpreter.identity)
for cached_interpreter in cache.setup(filters=[current_interpreter.identity.requirement]):
# TODO(John Sirois): Revert to directly comparing interpreters when
# https://github.com/pantsbuild/pex/pull/31 is in, released and consumed by pants.
if (cached_interpreter.binary, cached_interpreter.identity) == current_id:
return cached_interpreter
raise RuntimeError('Could not find suitable interpreter to run tests.')
def _create_interpreter_path_file(self, interpreter_path_file, targets):
interpreter_cache = PythonInterpreterCache(
PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=self.context.log.debug)
interpreter = interpreter_cache.select_interpreter_for_targets(targets)
safe_mkdir_for(interpreter_path_file)
with open(interpreter_path_file, 'w') as outfile:
outfile.write(b'{}\n'.format(interpreter.binary))
for dist, location in interpreter.extras.items():
dist_name, dist_version = dist
outfile.write(b'{}\t{}\t{}\n'.format(dist_name, dist_version,
location))
def test_namespace_effective(self):
self.create_file('src/thrift/com/foo/one.thrift', contents=dedent("""
namespace py foo.bar
struct One {}
"""))
one = self.make_target(spec='src/thrift/com/foo:one',
target_type=PythonThriftLibrary,
sources=['one.thrift'])
apache_thrift_gen, synthetic_target_one = self.generate_single_thrift_target(one)
self.create_file('src/thrift2/com/foo/two.thrift', contents=dedent("""
namespace py foo.baz
struct Two {}
"""))
two = self.make_target(spec='src/thrift2/com/foo:two',
target_type=PythonThriftLibrary,
sources=['two.thrift'])
_, synthetic_target_two = self.generate_single_thrift_target(two)
# Confirm separate PYTHONPATH entries, which we need to test namespace packages.
self.assertNotEqual(synthetic_target_one.target_base, synthetic_target_two.target_base)
targets = (synthetic_target_one, synthetic_target_two)
python_repos = global_subsystem_instance(PythonRepos)
python_setup = global_subsystem_instance(PythonSetup)
interpreter_cache = PythonInterpreterCache(python_setup, python_repos)
interpreter = interpreter_cache.select_interpreter_for_targets(targets)
# We need setuptools to import namespace packages (via pkg_resources), so we prime the
# PYTHONPATH with interpreter extras, which Pants always populates with setuptools and wheel.
# TODO(John Sirois): We really should be emitting setuptools in a
# `synthetic_target_extra_dependencies` override in `ApacheThriftPyGen`:
# https://github.com/pantsbuild/pants/issues/5975
pythonpath = interpreter.extras.values()
pythonpath.extend(os.path.join(get_buildroot(), t.target_base) for t in targets)
for dist in resolve(['thrift=={}'.format(self.get_thrift_version(apache_thrift_gen))],
interpreter=interpreter,
context=python_repos.get_network_context(),
fetchers=python_repos.get_fetchers()):
pythonpath.append(dist.location)
process = subprocess.Popen([interpreter.binary,
'-c',
'from foo.bar.ttypes import One; from foo.baz.ttypes import Two'],
env={'PYTHONPATH': os.pathsep.join(pythonpath)},
stderr=subprocess.PIPE)
_, stderr = process.communicate()
self.assertEqual(0, process.returncode, stderr)
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)
def interpreter_cache(self):
if self._interpreter_cache is None:
self._interpreter_cache = PythonInterpreterCache(
self.context.config, logger=self.context.log.debug)
# Cache setup's requirement fetching can hang if run concurrently by another pants proc.
self.context.acquire_lock()
try:
# 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=self._compatibilities)
finally:
self.context.release_lock()
return self._interpreter_cache
def _setup_test(self, constraints=None):
mock_setup = mock.MagicMock().return_value
type(mock_setup).interpreter_constraints = mock.PropertyMock(
return_value=constraints)
with temporary_dir() as path:
mock_setup.interpreter_cache_dir = path
cache = PythonInterpreterCache(mock_setup, mock.MagicMock())
def set_interpreters(_):
cache._interpreters.add(self._interpreter)
cache._setup_cached = mock.Mock(side_effect=set_interpreters)
cache._setup_paths = mock.Mock()
yield cache, path
def _setup_test(self, interpreter_requirement=None):
mock_setup = mock.MagicMock().return_value
# Explicitly set a repo-wide requirement that excludes our one interpreter.
type(mock_setup).interpreter_requirement = mock.PropertyMock(
return_value=interpreter_requirement)
with temporary_dir() as path:
mock_setup.interpreter_cache_dir = path
cache = PythonInterpreterCache(mock_setup, mock.MagicMock())
def set_interpreters(_):
cache._interpreters.add(self._interpreter)
cache._setup_cached = mock.Mock(side_effect=set_interpreters)
cache._setup_paths = mock.Mock()
yield cache, path
def _gather_sources(self, target_roots):
context = self.context(target_roots=target_roots, for_subsystems=[PythonSetup, PythonRepos])
# We must get an interpreter via the cache, instead of using PythonInterpreter.get() directly,
# to ensure that the interpreter has setuptools and wheel support.
interpreter = PythonInterpreter.get()
interpreter_cache = PythonInterpreterCache(PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=context.log.debug)
interpreters = interpreter_cache.setup(paths=[os.path.dirname(interpreter.binary)],
filters=[str(interpreter.identity.requirement)])
context.products.get_data(PythonInterpreter, lambda: interpreters[0])
task = self.create_task(context)
task.execute()
return context.products.get_data(GatherSources.PYTHON_SOURCES)
def execute(self):
""""Run Checkstyle on all found non-synthetic source files."""
python_tgts = self.context.targets(
lambda tgt: isinstance(tgt, (PythonTarget)))
if not python_tgts:
return 0
interpreter_cache = PythonInterpreterCache(
PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=self.context.log.debug)
with self.invalidated(self.get_targets(
self._is_checked)) as invalidation_check:
failure_count = 0
tgts_by_compatibility, _ = interpreter_cache.partition_targets_by_compatibility(
[vt.target for vt in invalidation_check.invalid_vts])
for filters, targets in tgts_by_compatibility.items():
if self.get_options(
).interpreter_constraints_whitelist is None and not self._constraints_are_whitelisted(
filters):
deprecated_conditional(
lambda: self.get_options(
).interpreter_constraints_whitelist is None,
'1.14.0.dev2',
"Python linting is currently restricted to targets that match the global "
"interpreter constraints: {}. Pants detected unacceptable filters: {}. "
"Use the `--interpreter-constraints-whitelist` lint option to whitelist "
"compatibiltiy constraints.".format(
PythonSetup.global_instance().
interpreter_constraints, filters))
else:
sources = self.calculate_sources([tgt for tgt in targets])
if sources:
allowed_interpreters = set(
interpreter_cache.setup(filters=filters))
if not allowed_interpreters:
raise TaskError(
'No valid interpreters found for targets: {}\n(filters: {})'
.format(targets, filters))
interpreter = min(allowed_interpreters)
failure_count += self.checkstyle(interpreter, sources)
if failure_count > 0 and self.get_options().fail:
raise TaskError(
'{} Python Style issues found. You may try `./pants fmt <targets>`'
.format(failure_count))
return failure_count
def test_cache_setup_with_no_filters_uses_repo_default_excluded(
self, MockSetup):
interpreter = PythonInterpreter.get()
mock_setup = MockSetup.return_value
type(mock_setup).interpreter_requirement = mock.PropertyMock(
return_value=None)
with temporary_dir() as path:
mock_setup.scratch_dir.return_value = path
cache = PythonInterpreterCache(mock.MagicMock())
def set_interpreters(_):
cache._interpreters.add(interpreter)
cache._setup_cached = mock.Mock(side_effect=set_interpreters)
self.assertEqual(cache.setup(), [interpreter])
def _setup_test(self,
constraints=None,
mock_setup_paths_interpreters=None):
mock_setup = mock.MagicMock().return_value
type(mock_setup).interpreter_constraints = mock.PropertyMock(
return_value=constraints)
with temporary_dir() as path:
mock_setup.interpreter_cache_dir = path
cache = PythonInterpreterCache(mock_setup, mock.MagicMock())
cache._setup_cached = mock.Mock(return_value=[self._interpreter])
if mock_setup_paths_interpreters:
cache._setup_paths = mock.Mock(return_value=[
PythonInterpreter.from_binary(
mock_setup_paths_interpreters[0]),
PythonInterpreter.from_binary(
mock_setup_paths_interpreters[1])
])
else:
cache._setup_paths = mock.Mock(return_value=[])
yield cache, path
def test_cache_setup_with_filter_overrides_repo_default(self, MockSetup):
interpreter = PythonInterpreter.get()
mock_setup = MockSetup.return_value
# Explicitly set a repo-wide requirement that excludes our one interpreter
type(mock_setup).interpreter_requirement = mock.PropertyMock(
return_value=self._make_bad_requirement(
interpreter.identity.requirement))
with temporary_dir() as path:
mock_setup.scratch_dir.return_value = path
cache = PythonInterpreterCache(mock.MagicMock())
def set_interpreters(_):
cache._interpreters.add(interpreter)
cache._setup_cached = mock.Mock(side_effect=set_interpreters)
self.assertEqual(
cache.setup(filters=(str(interpreter.identity.requirement), )),
[interpreter])
def test_cache_setup_with_no_filters_uses_repo_default_excluded(
self, MockSetup):
# This is the interpreter we'll inject into the cache
interpreter = PythonInterpreter.get()
mock_setup = MockSetup.return_value
# Explicitly set a repo-wide requirement that excludes our one interpreter
type(mock_setup).interpreter_requirement = mock.PropertyMock(
return_value=self._make_bad_requirement(
interpreter.identity.requirement))
with temporary_dir() as path:
mock_setup.scratch_dir.return_value = path
cache = PythonInterpreterCache(mock.MagicMock())
def set_interpreters(_):
cache._interpreters.add(interpreter)
cache._setup_cached = mock.Mock(side_effect=set_interpreters)
cache._setup_paths = mock.Mock()
self.assertEqual(len(cache.setup()), 0)
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 __init__(self, *args, **kwargs):
super(PythonTask, self).__init__(*args, **kwargs)
self._interpreter_cache = PythonInterpreterCache(
PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=self.context.log.debug)
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 _interpreter_cache(self):
return PythonInterpreterCache(PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=self.context.log.debug)
