112 lines
4.0 KiB
Python
112 lines
4.0 KiB
Python
# Copyright 2016 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import os.path
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import shutil
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import sys
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import tempfile
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from distutils import errors
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import commands
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C_PYTHON_DEV = """
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#include <Python.h>
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int main(int argc, char **argv) { return 0; }
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"""
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C_PYTHON_DEV_ERROR_MESSAGE = """
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Could not find <Python.h>. This could mean the following:
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* You're on Ubuntu and haven't run `apt-get install python-dev`.
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* You're on RHEL/Fedora and haven't run `yum install python-devel` or
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`dnf install python-devel` (make sure you also have redhat-rpm-config
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installed)
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* You're on Mac OS X and the usual Python framework was somehow corrupted
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(check your environment variables or try re-installing?)
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* You're on Windows and your Python installation was somehow corrupted
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(check your environment variables or try re-installing?)
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"""
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C_CHECKS = {
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C_PYTHON_DEV: C_PYTHON_DEV_ERROR_MESSAGE,
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}
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def _compile(compiler, source_string):
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tempdir = tempfile.mkdtemp()
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cpath = os.path.join(tempdir, 'a.c')
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with open(cpath, 'w') as cfile:
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cfile.write(source_string)
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try:
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compiler.compile([cpath])
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except errors.CompileError as error:
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return error
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finally:
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shutil.rmtree(tempdir)
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def _expect_compile(compiler, source_string, error_message):
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if _compile(compiler, source_string) is not None:
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sys.stderr.write(error_message)
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raise commands.CommandError(
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"Diagnostics found a compilation environment issue:\n{}"
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.format(error_message))
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def diagnose_compile_error(build_ext, error):
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"""Attempt to diagnose an error during compilation."""
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for c_check, message in C_CHECKS.items():
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_expect_compile(build_ext.compiler, c_check, message)
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python_sources = [
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source for source in build_ext.get_source_files()
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if source.startswith('./src/python') and source.endswith('c')
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]
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for source in python_sources:
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if not os.path.isfile(source):
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raise commands.CommandError((
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"Diagnostics found a missing Python extension source file:\n{}\n\n"
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"This is usually because the Cython sources haven't been transpiled "
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"into C yet and you're building from source.\n"
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"Try setting the environment variable "
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"`GRPC_PYTHON_BUILD_WITH_CYTHON=1` when invoking `setup.py` or "
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"when using `pip`, e.g.:\n\n"
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"pip install -rrequirements.txt\n"
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"GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install .").format(source))
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def diagnose_attribute_error(build_ext, error):
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if any('_needs_stub' in arg for arg in error.args):
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raise commands.CommandError(
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"We expect a missing `_needs_stub` attribute from older versions of "
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"setuptools. Consider upgrading setuptools.")
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_ERROR_DIAGNOSES = {
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errors.CompileError: diagnose_compile_error,
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AttributeError: diagnose_attribute_error,
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}
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def diagnose_build_ext_error(build_ext, error, formatted):
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diagnostic = _ERROR_DIAGNOSES.get(type(error))
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if diagnostic is None:
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raise commands.CommandError(
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"\n\nWe could not diagnose your build failure. If you are unable to "
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"proceed, please file an issue at http://www.github.com/grpc/grpc "
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"with `[Python install]` in the title; please attach the whole log "
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"(including everything that may have appeared above the Python "
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"backtrace).\n\n{}".format(formatted))
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else:
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diagnostic(build_ext, error)
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