Add Python documentation generation
diff --git a/src/python/src/.gitignore b/src/python/src/.gitignore
index 144e501..d89f3db 100644
--- a/src/python/src/.gitignore
+++ b/src/python/src/.gitignore
@@ -2,3 +2,7 @@
 grpcio.egg-info/
 build/
 dist/
+*.egg
+*.egg/
+*.eggs/
+doc/
diff --git a/src/python/src/MANIFEST.in b/src/python/src/MANIFEST.in
index 6f32db0..498b55f 100644
--- a/src/python/src/MANIFEST.in
+++ b/src/python/src/MANIFEST.in
@@ -1 +1,2 @@
 graft grpc
+include commands.py
diff --git a/src/python/src/commands.py b/src/python/src/commands.py
new file mode 100644
index 0000000..8e87855
--- /dev/null
+++ b/src/python/src/commands.py
@@ -0,0 +1,75 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Provides distutils command classes for the GRPC Python setup process."""
+
+import os
+import os.path
+import sys
+
+import setuptools
+
+_CONF_PY_ADDENDUM = """
+extensions.append('sphinx.ext.napoleon')
+napoleon_google_docstring = True
+napoleon_numpy_docstring = True
+
+html_theme = 'sphinx_rtd_theme'
+"""
+
+class SphinxDocumentation(setuptools.Command):
+  """Command to generate documentation via sphinx."""
+
+  description = ''
+  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(
+        os.getcwd(), self.distribution.package_dir['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)
+    sphinx.main(['', os.path.join('doc', 'src'), os.path.join('doc', 'build')])
+
diff --git a/src/python/src/setup.cfg b/src/python/src/setup.cfg
new file mode 100644
index 0000000..8f69613
--- /dev/null
+++ b/src/python/src/setup.cfg
@@ -0,0 +1,2 @@
+[build_ext]
+inplace=1
diff --git a/src/python/src/setup.py b/src/python/src/setup.py
index a857ae9..0310a83 100644
--- a/src/python/src/setup.py
+++ b/src/python/src/setup.py
@@ -30,11 +30,17 @@
 """A setup module for the GRPC Python package."""
 
 import os
+import os.path
 import sys
 
 from distutils import core as _core
 import setuptools
 
+# Ensure we're in the proper directory whether or not we're being used by pip.
+os.chdir(os.path.dirname(os.path.abspath(__file__)))
+
+# Break import-style to ensure we can actually find our commands module.
+import commands
 
 # Use environment variables to determine whether or not the Cython extension
 # should *use* Cython or use the generated C files. Note that this requires the
@@ -98,15 +104,27 @@
     'grpc.framework': 'grpc/framework',
 }
 
+_INSTALL_REQUIRES = (
+    'enum34==1.0.4',
+    'futures==2.2.0',
+    'protobuf==3.0.0a3'
+)
+
+_SETUP_REQUIRES = (
+    'sphinx>=1.3',
+) + _INSTALL_REQUIRES
+
+_COMMAND_CLASS = {
+    'doc': commands.SphinxDocumentation
+}
+
 setuptools.setup(
     name='grpcio',
     version='0.10.0a0',
     ext_modules=_EXTENSION_MODULES,
     packages=list(_PACKAGES),
     package_dir=_PACKAGE_DIRECTORIES,
-    install_requires=[
-        'enum34==1.0.4',
-        'futures==2.2.0',
-        'protobuf==3.0.0a3'
-    ]
+    install_requires=_INSTALL_REQUIRES,
+    setup_requires=_SETUP_REQUIRES,
+    cmdclass=_COMMAND_CLASS
 )