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 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 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_cache.setup()
interpreters = list(interpreter_cache.matched_interpreters(
self.python_setup.interpreter_constraints))
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,
interpreter=interpreter,
builder=pex_builder,
targets=targets,
platforms=['current'])
try:
python_chroot.dump()
yield pex_builder, python_chroot
finally:
python_chroot.delete()
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):
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.matched_interpreters([
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 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 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 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 _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 _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 _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 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
self.context(for_subsystems=[PythonSetup, PythonRepos], options={
PythonSetup.options_scope: {
'interpreter_cache_dir': None,
'pants_workdir': os.path.join(root, 'workdir'),
'constraints': [interpreter_requirement],
'setuptools_version': setuptools_version,
'wheel_version': wheel_version,
},
PythonRepos.options_scope: {
'indexes': [],
'repos': [egg_dir],
}
})
cache = PythonInterpreterCache(PythonSetup.global_instance(), PythonRepos.global_instance())
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 _validate_interpreter_constraints(self, constraint_tgts):
"""Validate that the transitive constraints of the given PythonBinary target are compatible.
If no (local) interpreter can satisfy all of the given targets, raises
PythonInterpreterCache.UnsatisfiableInterpreterConstraintsError.
TODO: This currently does so by finding a concrete local interpreter that matches all of the
constraints, but it is possible to do this in memory instead.
see https://github.com/pantsbuild/pants/issues/7775
"""
PythonInterpreterCache.global_instance(
).select_interpreter_for_targets(constraint_tgts)
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
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
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 _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 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 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 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 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 _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 __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 _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 _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 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.global_instance()
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():
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 execute(self):
python_tgts_and_reqs = self.context.targets(
lambda tgt: isinstance(tgt, (PythonTarget, PythonRequirementLibrary))
)
if not python_tgts_and_reqs:
return
python_tgts = [tgt for tgt in python_tgts_and_reqs if isinstance(tgt, PythonTarget)]
fs = PythonInterpreterFingerprintStrategy()
with self.invalidated(python_tgts, fingerprint_strategy=fs) as invalidation_check:
if (PythonSetup.global_instance().interpreter_search_paths
and PythonInterpreterCache.pex_python_paths()):
self.context.log.warn("Detected both PEX_PYTHON_PATH and "
"--python-setup-interpreter-search-paths. Ignoring "
"--python-setup-interpreter-search-paths.")
# 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 = self._interpreter_path_file(target_set_id)
if not os.path.exists(interpreter_path_file):
self._create_interpreter_path_file(interpreter_path_file, python_tgts)
interpreter = self._get_interpreter(interpreter_path_file)
self.context.products.register_data(PythonInterpreter, interpreter)
def _gather_sources(self, target_roots):
with temporary_dir() as cache_dir:
interpreter = PythonInterpreter.get()
context = self.context(
target_roots=target_roots,
for_subsystems=[PythonInterpreterCache],
options={
PythonSetup.options_scope: {
'interpreter_cache_dir':
cache_dir,
'interpreter_search_paths':
[os.path.dirname(interpreter.binary)],
}
})
# We must get an interpreter via the cache, instead of using the value of
# PythonInterpreter.get() directly, to ensure that the interpreter has setuptools and
# wheel support.
interpreter_cache = PythonInterpreterCache.global_instance()
interpreters = interpreter_cache.setup(
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 _create_interpreter_cache(self, setup_options=None):
Subsystem.reset(reset_options=True)
self.context(for_subsystems=[PythonInterpreterCache],
options={
'python-setup': setup_options,
})
return PythonInterpreterCache.global_instance()
def execute(self):
python_tgts = self.context.targets(
lambda tgt: isinstance(tgt, PythonTarget))
fs = PythonInterpreterFingerprintStrategy()
with self.invalidated(python_tgts,
fingerprint_strategy=fs) as invalidation_check:
if (PythonSetup.global_instance().interpreter_search_paths
and PythonInterpreterCache.pex_python_paths()):
self.context.log.warn(
"Detected both PEX_PYTHON_PATH and "
"--python-setup-interpreter-search-paths. Ignoring "
"--python-setup-interpreter-search-paths.")
# 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 = self._interpreter_path_file(target_set_id)
if not os.path.exists(interpreter_path_file):
self._create_interpreter_path_file(interpreter_path_file,
python_tgts)
interpreter = self._get_interpreter(interpreter_path_file)
self.context.products.register_data(PythonInterpreter, interpreter)
def execute(self):
if not self.will_be_invoked():
return
tool_subsystem = self.tool_subsystem_cls.scoped_instance(self)
interpreter_cache = PythonInterpreterCache.global_instance()
interpreters = interpreter_cache.setup(
filters=tool_subsystem.get_interpreter_constraints())
if not interpreters:
raise TaskError(
"Found no Python interpreter capable of running the {} tool with "
"constraints {}".format(
tool_subsystem.options_scope,
tool_subsystem.get_interpreter_constraints()))
interpreter = min(interpreters)
pex_path = self._generate_fingerprinted_pex_path(
tool_subsystem, interpreter)
if not os.path.exists(pex_path):
with self.context.new_workunit(
name=f"create-{tool_subsystem.options_scope}-pex",
labels=[WorkUnitLabel.PREP]):
self._build_tool_pex(tool_subsystem=tool_subsystem,
interpreter=interpreter,
pex_path=pex_path)
tool_instance = self.tool_instance_cls(pex_path, interpreter)
self.context.products.register_data(self.tool_instance_cls,
tool_instance)
def _resolve_requirements(self, target_roots, options=None):
with temporary_dir() as cache_dir:
options = options or {}
python_setup_opts = options.setdefault(PythonSetup.options_scope,
{})
python_setup_opts["interpreter_cache_dir"] = cache_dir
interpreter = PythonInterpreter.get()
python_setup_opts["interpreter_search_paths"] = [
os.path.dirname(interpreter.binary)
]
context = self.context(target_roots=target_roots,
options=options,
for_subsystems=[PythonInterpreterCache])
# We must get an interpreter via the cache, instead of using the value of
# PythonInterpreter.get() directly, to ensure that the interpreter has setuptools and
# wheel support.
interpreter_cache = PythonInterpreterCache.global_instance()
interpreters = interpreter_cache.setup(
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 _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 _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 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 _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 _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 _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_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 _resolve_requirements(self, target_roots, options=None):
context = self.context(target_roots=target_roots, options=options)
# 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 _do_test(self, interpreter_requirement, filters, expected):
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.scratch_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()
self.assertEqual(cache.setup(filters=filters), expected)
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):
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 __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 _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_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)
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 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 __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)
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 _resolve_requirements(self, target_roots, options=None):
with temporary_dir() as cache_dir:
options = options or {}
python_setup_opts = options.setdefault(PythonSetup.options_scope, {})
python_setup_opts['interpreter_cache_dir'] = cache_dir
interpreter = PythonInterpreter.get()
python_setup_opts['interpreter_search_paths'] = [os.path.dirname(interpreter.binary)]
context = self.context(target_roots=target_roots, options=options,
for_subsystems=[PythonInterpreterCache])
# We must get an interpreter via the cache, instead of using the value of
# PythonInterpreter.get() directly, to ensure that the interpreter has setuptools and
# wheel support.
interpreter_cache = PythonInterpreterCache.global_instance()
interpreters = interpreter_cache.setup(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 _gather_sources(self, target_roots):
with temporary_dir() as cache_dir:
interpreter = PythonInterpreter.get()
context = self.context(target_roots=target_roots,
for_subsystems=[PythonInterpreterCache],
options={
PythonSetup.options_scope: {
'interpreter_cache_dir': cache_dir,
'interpreter_search_paths': [os.path.dirname(interpreter.binary)],
}})
# We must get an interpreter via the cache, instead of using the value of
# PythonInterpreter.get() directly, to ensure that the interpreter has setuptools and
# wheel support.
interpreter_cache = PythonInterpreterCache.global_instance()
interpreters = interpreter_cache.setup(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):
if not self.will_be_invoked():
return
tool_subsystem = self.tool_subsystem_cls.scoped_instance(self)
interpreter_cache = PythonInterpreterCache.global_instance()
interpreters = interpreter_cache.setup(filters=tool_subsystem.get_interpreter_constraints())
if not interpreters:
raise TaskError('Found no Python interpreter capable of running the {} tool with '
'constraints {}'.format(tool_subsystem.options_scope,
tool_subsystem.get_interpreter_constraints()))
interpreter = min(interpreters)
pex_path = self._generate_fingerprinted_pex_path(tool_subsystem, interpreter)
if not os.path.exists(pex_path):
with self.context.new_workunit(name='create-{}-pex'.format(tool_subsystem.options_scope),
labels=[WorkUnitLabel.PREP]):
self._build_tool_pex(tool_subsystem=tool_subsystem,
interpreter=interpreter,
pex_path=pex_path)
tool_instance = self.tool_instance_cls(pex_path, interpreter)
self.context.products.register_data(self.tool_instance_cls, tool_instance)
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()))
def _interpreter_cache(self): return PythonInterpreterCache.global_instance()