src/python/grpcio/commands.py - platform/external/grpc-grpc - Gitiles

 # Copyright 2015 gRPC authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Provides distutils command classes for the GRPC Python setup process."""

 import distutils
 import glob
 import os
 import os.path
 import platform
 import re
 import shutil
 import subprocess
 import sys
 import traceback

 import setuptools
 from setuptools.command import build_ext
 from setuptools.command import build_py
 from setuptools.command import easy_install
 from setuptools.command import install
 from setuptools.command import test

 import support

 PYTHON_STEM = os.path.dirname(os.path.abspath(__file__))
 GRPC_STEM = os.path.abspath(PYTHON_STEM + '../../../../')
 PROTO_STEM = os.path.join(GRPC_STEM, 'src', 'proto')
 PROTO_GEN_STEM = os.path.join(GRPC_STEM, 'src', 'python', 'gens')
 CYTHON_STEM = os.path.join(PYTHON_STEM, 'grpc', '_cython')

 CONF_PY_ADDENDUM = """
 extensions.append('sphinx.ext.napoleon')
 napoleon_google_docstring = True
 napoleon_numpy_docstring = True
 napoleon_include_special_with_doc = True

 html_theme = 'sphinx_rtd_theme'
 copyright = "2016, The gRPC Authors"
 """

 API_GLOSSARY = """

 Glossary
 ================

 .. glossary::

   metadatum
     A key-value pair included in the HTTP header.  It is a
     2-tuple where the first entry is the key and the
     second is the value, i.e. (key, value).  The metadata key is an ASCII str,
     and must be a valid HTTP header name.  The metadata value can be
     either a valid HTTP ASCII str, or bytes.  If bytes are provided,
     the key must end with '-bin', i.e.
     ``('binary-metadata-bin', b'\\x00\\xFF')``

   metadata
     A sequence of metadatum.
 """


 class CommandError(Exception):
     """Simple exception class for GRPC custom commands."""


 # TODO(atash): Remove this once PyPI has better Linux bdist support. See
 # https://bitbucket.org/pypa/pypi/issues/120/binary-wheels-for-linux-are-not-supported
 def _get_grpc_custom_bdist(decorated_basename, target_bdist_basename):
     """Returns a string path to a bdist file for Linux to install.

   If we can retrieve a pre-compiled bdist from online, uses it. Else, emits a
   warning and builds from source.
   """
     # TODO(atash): somehow the name that's returned from `wheel` is different
     # between different versions of 'wheel' (but from a compatibility standpoint,
     # the names are compatible); we should have some way of determining name
     # compatibility in the same way `wheel` does to avoid having to rename all of
     # the custom wheels that we build/upload to GCS.

     # Break import style to ensure that setup.py has had a chance to install the
     # relevant package.
     from six.moves.urllib import request
     decorated_path = decorated_basename + GRPC_CUSTOM_BDIST_EXT
     try:
         url = BINARIES_REPOSITORY + '/{target}'.format(target=decorated_path)
         bdist_data = request.urlopen(url).read()
     except IOError as error:
         raise CommandError('{}\n\nCould not find the bdist {}: {}'.format(
             traceback.format_exc(), decorated_path, error.message))
     # Our chosen local bdist path.
     bdist_path = target_bdist_basename + GRPC_CUSTOM_BDIST_EXT
     try:
         with open(bdist_path, 'w') as bdist_file:
             bdist_file.write(bdist_data)
     except IOError as error:
         raise CommandError('{}\n\nCould not write grpcio bdist: {}'.format(
             traceback.format_exc(), error.message))
     return bdist_path


 class SphinxDocumentation(setuptools.Command):
     """Command to generate documentation via sphinx."""

     description = 'generate sphinx documentation'
     user_options = []

     def initialize_options(self):
         pass

     def finalize_options(self):
         pass

     def run(self):
         # We import here to ensure that setup.py has had a chance to install the
         # relevant package eggs first.
         import sphinx
         import sphinx.apidoc
         metadata = self.distribution.metadata
         src_dir = os.path.join(PYTHON_STEM, 'grpc')
         sys.path.append(src_dir)
         sphinx.apidoc.main([
             '', '--force', '--full', '-H', metadata.name, '-A', metadata.author,
             '-V', metadata.version, '-R', metadata.version, '-o',
             os.path.join('doc', 'src'), src_dir
         ])
         conf_filepath = os.path.join('doc', 'src', 'conf.py')
         with open(conf_filepath, 'a') as conf_file:
             conf_file.write(CONF_PY_ADDENDUM)
         glossary_filepath = os.path.join('doc', 'src', 'grpc.rst')
         with open(glossary_filepath, 'a') as glossary_filepath:
             glossary_filepath.write(API_GLOSSARY)
         sphinx.main(
             ['', os.path.join('doc', 'src'),
              os.path.join('doc', 'build')])


 class BuildProjectMetadata(setuptools.Command):
     """Command to generate project metadata in a module."""

     description = 'build grpcio project metadata files'
     user_options = []

     def initialize_options(self):
         pass

     def finalize_options(self):
         pass

     def run(self):
         with open(os.path.join(PYTHON_STEM, 'grpc/_grpcio_metadata.py'),
                   'w') as module_file:
             module_file.write('__version__ = """{}"""'.format(
                 self.distribution.get_version()))


 class BuildPy(build_py.build_py):
     """Custom project build command."""

     def run(self):
         self.run_command('build_project_metadata')
         build_py.build_py.run(self)


 def _poison_extensions(extensions, message):
     """Includes a file that will always fail to compile in all extensions."""
     poison_filename = os.path.join(PYTHON_STEM, 'poison.c')
     with open(poison_filename, 'w') as poison:
         poison.write('#error {}'.format(message))
     for extension in extensions:
         extension.sources = [poison_filename]


 def check_and_update_cythonization(extensions):
     """Replace .pyx files with their generated counterparts and return whether or
      not cythonization still needs to occur."""
     for extension in extensions:
         generated_pyx_sources = []
         other_sources = []
         for source in extension.sources:
             base, file_ext = os.path.splitext(source)
             if file_ext == '.pyx':
                 generated_pyx_source = next(
                     (base + gen_ext for gen_ext in (
                         '.c',
                         '.cpp',
                     ) if os.path.isfile(base + gen_ext)), None)
                 if generated_pyx_source:
                     generated_pyx_sources.append(generated_pyx_source)
                 else:
                     sys.stderr.write('Cython-generated files are missing...\n')
                     return False
             else:
                 other_sources.append(source)
         extension.sources = generated_pyx_sources + other_sources
     sys.stderr.write('Found cython-generated files...\n')
     return True


 def try_cythonize(extensions, linetracing=False, mandatory=True):
     """Attempt to cythonize the extensions.

   Args:
     extensions: A list of `distutils.extension.Extension`.
     linetracing: A bool indicating whether or not to enable linetracing.
     mandatory: Whether or not having Cython-generated files is mandatory. If it
       is, extensions will be poisoned when they can't be fully generated.
   """
     try:
         # Break import style to ensure we have access to Cython post-setup_requires
         import Cython.Build
     except ImportError:
         if mandatory:
             sys.stderr.write(
                 "This package needs to generate C files with Cython but it cannot. "
                 "Poisoning extension sources to disallow extension commands...")
             _poison_extensions(
                 extensions,
                 "Extensions have been poisoned due to missing Cython-generated code."
             )
         return extensions
     cython_compiler_directives = {}
     if linetracing:
         additional_define_macros = [('CYTHON_TRACE_NOGIL', '1')]
         cython_compiler_directives['linetrace'] = True
     return Cython.Build.cythonize(
         extensions,
         include_path=[
             include_dir
             for extension in extensions
             for include_dir in extension.include_dirs
         ] + [CYTHON_STEM],
         compiler_directives=cython_compiler_directives)


 class BuildExt(build_ext.build_ext):
     """Custom build_ext command to enable compiler-specific flags."""

     C_OPTIONS = {
         'unix': ('-pthread',),
         'msvc': (),
     }
     LINK_OPTIONS = {}

     def build_extensions(self):
         if "darwin" in sys.platform:
             config = os.environ.get('CONFIG', 'opt')
             target_path = os.path.abspath(
                 os.path.join(
                     os.path.dirname(os.path.realpath(__file__)), '..', '..',
                     '..', 'libs', config))
             targets = [
                 os.path.join(target_path, 'libboringssl.a'),
                 os.path.join(target_path, 'libares.a'),
                 os.path.join(target_path, 'libgpr.a'),
                 os.path.join(target_path, 'libgrpc.a')
             ]
             # Running make separately for Mac means we lose all
             # Extension.define_macros configured in setup.py. Re-add the macro
             # for gRPC Core's fork handlers.
             # TODO(ericgribkoff) Decide what to do about the other missing core
             #   macros, including GRPC_ENABLE_FORK_SUPPORT, which defaults to 1
             #   on Linux but remains unset on Mac.
             extra_defines = [
                 'EXTRA_DEFINES="GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK=1"'
             ]
             make_process = subprocess.Popen(
                 ['make'] + extra_defines + targets,
                 stdout=subprocess.PIPE,
                 stderr=subprocess.PIPE)
             make_out, make_err = make_process.communicate()
             if make_out and make_process.returncode != 0:
                 sys.stdout.write(str(make_out) + '\n')
             if make_err:
                 sys.stderr.write(str(make_err) + '\n')
             if make_process.returncode != 0:
                 raise Exception("make command failed!")

         compiler = self.compiler.compiler_type
         if compiler in BuildExt.C_OPTIONS:
             for extension in self.extensions:
                 extension.extra_compile_args += list(
                     BuildExt.C_OPTIONS[compiler])
         if compiler in BuildExt.LINK_OPTIONS:
             for extension in self.extensions:
                 extension.extra_link_args += list(
                     BuildExt.LINK_OPTIONS[compiler])
         if not check_and_update_cythonization(self.extensions):
             self.extensions = try_cythonize(self.extensions)
         try:
             build_ext.build_ext.build_extensions(self)
         except Exception as error:
             formatted_exception = traceback.format_exc()
             support.diagnose_build_ext_error(self, error, formatted_exception)
             raise CommandError(
                 "Failed `build_ext` step:\n{}".format(formatted_exception))


 class Gather(setuptools.Command):
     """Command to gather project dependencies."""

     description = 'gather dependencies for grpcio'
     user_options = [('test', 't',
                      'flag indicating to gather test dependencies'),
                     ('install', 'i',
                      'flag indicating to gather install dependencies')]

     def initialize_options(self):
         self.test = False
         self.install = False

     def finalize_options(self):
         # distutils requires this override.
         pass

     def run(self):
         if self.install and self.distribution.install_requires:
             self.distribution.fetch_build_eggs(
                 self.distribution.install_requires)
         if self.test and self.distribution.tests_require:
             self.distribution.fetch_build_eggs(self.distribution.tests_require)
	# Copyright 2015 gRPC authors.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	"""Provides distutils command classes for the GRPC Python setup process."""

	import distutils
	import glob
	import os
	import os.path
	import platform
	import re
	import shutil
	import subprocess
	import sys
	import traceback

	import setuptools
	from setuptools.command import build_ext
	from setuptools.command import build_py
	from setuptools.command import easy_install
	from setuptools.command import install
	from setuptools.command import test

	import support

	PYTHON_STEM = os.path.dirname(os.path.abspath(__file__))
	GRPC_STEM = os.path.abspath(PYTHON_STEM + '../../../../')
	PROTO_STEM = os.path.join(GRPC_STEM, 'src', 'proto')
	PROTO_GEN_STEM = os.path.join(GRPC_STEM, 'src', 'python', 'gens')
	CYTHON_STEM = os.path.join(PYTHON_STEM, 'grpc', '_cython')

	CONF_PY_ADDENDUM = """
	extensions.append('sphinx.ext.napoleon')
	napoleon_google_docstring = True
	napoleon_numpy_docstring = True
	napoleon_include_special_with_doc = True

	html_theme = 'sphinx_rtd_theme'
	copyright = "2016, The gRPC Authors"
	"""

	API_GLOSSARY = """

	Glossary
	================

	.. glossary::

	metadatum
	A key-value pair included in the HTTP header. It is a
	2-tuple where the first entry is the key and the
	second is the value, i.e. (key, value). The metadata key is an ASCII str,
	and must be a valid HTTP header name. The metadata value can be
	either a valid HTTP ASCII str, or bytes. If bytes are provided,
	the key must end with '-bin', i.e.
	``('binary-metadata-bin', b'\\x00\\xFF')``

	metadata
	A sequence of metadatum.
	"""


	class CommandError(Exception):
	"""Simple exception class for GRPC custom commands."""


	# TODO(atash): Remove this once PyPI has better Linux bdist support. See
	# https://bitbucket.org/pypa/pypi/issues/120/binary-wheels-for-linux-are-not-supported
	def _get_grpc_custom_bdist(decorated_basename, target_bdist_basename):
	"""Returns a string path to a bdist file for Linux to install.

	If we can retrieve a pre-compiled bdist from online, uses it. Else, emits a
	warning and builds from source.
	"""
	# TODO(atash): somehow the name that's returned from `wheel` is different
	# between different versions of 'wheel' (but from a compatibility standpoint,
	# the names are compatible); we should have some way of determining name
	# compatibility in the same way `wheel` does to avoid having to rename all of
	# the custom wheels that we build/upload to GCS.

	# Break import style to ensure that setup.py has had a chance to install the
	# relevant package.
	from six.moves.urllib import request
	decorated_path = decorated_basename + GRPC_CUSTOM_BDIST_EXT
	try:
	url = BINARIES_REPOSITORY + '/{target}'.format(target=decorated_path)
	bdist_data = request.urlopen(url).read()
	except IOError as error:
	raise CommandError('{}\n\nCould not find the bdist {}: {}'.format(
	traceback.format_exc(), decorated_path, error.message))
	# Our chosen local bdist path.
	bdist_path = target_bdist_basename + GRPC_CUSTOM_BDIST_EXT
	try:
	with open(bdist_path, 'w') as bdist_file:
	bdist_file.write(bdist_data)
	except IOError as error:
	raise CommandError('{}\n\nCould not write grpcio bdist: {}'.format(
	traceback.format_exc(), error.message))
	return bdist_path


	class SphinxDocumentation(setuptools.Command):
	"""Command to generate documentation via sphinx."""

	description = 'generate sphinx documentation'
	user_options = []

	def initialize_options(self):
	pass

	def finalize_options(self):
	pass

	def run(self):
	# We import here to ensure that setup.py has had a chance to install the
	# relevant package eggs first.
	import sphinx
	import sphinx.apidoc
	metadata = self.distribution.metadata
	src_dir = os.path.join(PYTHON_STEM, 'grpc')
	sys.path.append(src_dir)
	sphinx.apidoc.main([
	'', '--force', '--full', '-H', metadata.name, '-A', metadata.author,
	'-V', metadata.version, '-R', metadata.version, '-o',
	os.path.join('doc', 'src'), src_dir
	])
	conf_filepath = os.path.join('doc', 'src', 'conf.py')
	with open(conf_filepath, 'a') as conf_file:
	conf_file.write(CONF_PY_ADDENDUM)
	glossary_filepath = os.path.join('doc', 'src', 'grpc.rst')
	with open(glossary_filepath, 'a') as glossary_filepath:
	glossary_filepath.write(API_GLOSSARY)
	sphinx.main(
	['', os.path.join('doc', 'src'),
	os.path.join('doc', 'build')])


	class BuildProjectMetadata(setuptools.Command):
	"""Command to generate project metadata in a module."""

	description = 'build grpcio project metadata files'
	user_options = []

	def initialize_options(self):
	pass

	def finalize_options(self):
	pass

	def run(self):
	with open(os.path.join(PYTHON_STEM, 'grpc/_grpcio_metadata.py'),
	'w') as module_file:
	module_file.write('__version__ = """{}"""'.format(
	self.distribution.get_version()))


	class BuildPy(build_py.build_py):
	"""Custom project build command."""

	def run(self):
	self.run_command('build_project_metadata')
	build_py.build_py.run(self)


	def _poison_extensions(extensions, message):
	"""Includes a file that will always fail to compile in all extensions."""
	poison_filename = os.path.join(PYTHON_STEM, 'poison.c')
	with open(poison_filename, 'w') as poison:
	poison.write('#error {}'.format(message))
	for extension in extensions:
	extension.sources = [poison_filename]


	def check_and_update_cythonization(extensions):
	"""Replace .pyx files with their generated counterparts and return whether or
	not cythonization still needs to occur."""
	for extension in extensions:
	generated_pyx_sources = []
	other_sources = []
	for source in extension.sources:
	base, file_ext = os.path.splitext(source)
	if file_ext == '.pyx':
	generated_pyx_source = next(
	(base + gen_ext for gen_ext in (
	'.c',
	'.cpp',
	) if os.path.isfile(base + gen_ext)), None)
	if generated_pyx_source:
	generated_pyx_sources.append(generated_pyx_source)
	else:
	sys.stderr.write('Cython-generated files are missing...\n')
	return False
	else:
	other_sources.append(source)
	extension.sources = generated_pyx_sources + other_sources
	sys.stderr.write('Found cython-generated files...\n')
	return True


	def try_cythonize(extensions, linetracing=False, mandatory=True):
	"""Attempt to cythonize the extensions.

	Args:
	extensions: A list of `distutils.extension.Extension`.
	linetracing: A bool indicating whether or not to enable linetracing.
	mandatory: Whether or not having Cython-generated files is mandatory. If it
	is, extensions will be poisoned when they can't be fully generated.
	"""
	try:
	# Break import style to ensure we have access to Cython post-setup_requires
	import Cython.Build
	except ImportError:
	if mandatory:
	sys.stderr.write(
	"This package needs to generate C files with Cython but it cannot. "
	"Poisoning extension sources to disallow extension commands...")
	_poison_extensions(
	extensions,
	"Extensions have been poisoned due to missing Cython-generated code."
	)
	return extensions
	cython_compiler_directives = {}
	if linetracing:
	additional_define_macros = [('CYTHON_TRACE_NOGIL', '1')]
	cython_compiler_directives['linetrace'] = True
	return Cython.Build.cythonize(
	extensions,
	include_path=[
	include_dir
	for extension in extensions
	for include_dir in extension.include_dirs
	] + [CYTHON_STEM],
	compiler_directives=cython_compiler_directives)


	class BuildExt(build_ext.build_ext):
	"""Custom build_ext command to enable compiler-specific flags."""

	C_OPTIONS = {
	'unix': ('-pthread',),
	'msvc': (),
	}
	LINK_OPTIONS = {}

	def build_extensions(self):
	if "darwin" in sys.platform:
	config = os.environ.get('CONFIG', 'opt')
	target_path = os.path.abspath(
	os.path.join(
	os.path.dirname(os.path.realpath(__file__)), '..', '..',
	'..', 'libs', config))
	targets = [
	os.path.join(target_path, 'libboringssl.a'),
	os.path.join(target_path, 'libares.a'),
	os.path.join(target_path, 'libgpr.a'),
	os.path.join(target_path, 'libgrpc.a')
	]
	# Running make separately for Mac means we lose all
	# Extension.define_macros configured in setup.py. Re-add the macro
	# for gRPC Core's fork handlers.
	# TODO(ericgribkoff) Decide what to do about the other missing core
	# macros, including GRPC_ENABLE_FORK_SUPPORT, which defaults to 1
	# on Linux but remains unset on Mac.
	extra_defines = [
	'EXTRA_DEFINES="GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK=1"'
	]
	make_process = subprocess.Popen(
	['make'] + extra_defines + targets,
	stdout=subprocess.PIPE,
	stderr=subprocess.PIPE)
	make_out, make_err = make_process.communicate()
	if make_out and make_process.returncode != 0:
	sys.stdout.write(str(make_out) + '\n')
	if make_err:
	sys.stderr.write(str(make_err) + '\n')
	if make_process.returncode != 0:
	raise Exception("make command failed!")

	compiler = self.compiler.compiler_type
	if compiler in BuildExt.C_OPTIONS:
	for extension in self.extensions:
	extension.extra_compile_args += list(
	BuildExt.C_OPTIONS[compiler])
	if compiler in BuildExt.LINK_OPTIONS:
	for extension in self.extensions:
	extension.extra_link_args += list(
	BuildExt.LINK_OPTIONS[compiler])
	if not check_and_update_cythonization(self.extensions):
	self.extensions = try_cythonize(self.extensions)
	try:
	build_ext.build_ext.build_extensions(self)
	except Exception as error:
	formatted_exception = traceback.format_exc()
	support.diagnose_build_ext_error(self, error, formatted_exception)
	raise CommandError(
	"Failed `build_ext` step:\n{}".format(formatted_exception))


	class Gather(setuptools.Command):
	"""Command to gather project dependencies."""

	description = 'gather dependencies for grpcio'
	user_options = [('test', 't',
	'flag indicating to gather test dependencies'),
	('install', 'i',
	'flag indicating to gather install dependencies')]

	def initialize_options(self):
	self.test = False
	self.install = False

	def finalize_options(self):
	# distutils requires this override.
	pass

	def run(self):
	if self.install and self.distribution.install_requires:
	self.distribution.fetch_build_eggs(
	self.distribution.install_requires)
	if self.test and self.distribution.tests_require:
	self.distribution.fetch_build_eggs(self.distribution.tests_require)