Simplify installation process

Move dependencies to setup.py and make protobuf stub generation part of
setup.py build stage.

Author: elprans

.ci/travis_install.sh

@@ -6,7 +6,4 @@ python --version
 
 .ci/travis_download_webhost.sh
 
-pip install -r requirements-dev.txt
-pip install -e .
-
-python setup.py gen_grpc
+pip install -U -e .[dev]

DEVELOPMENT.md

@@ -33,23 +33,11 @@ $ cd azure-functions-python-worker
 dll = /MY/LOCAL/PATH/TO/SiteExtensions/Functions/Microsoft.Azure.WebJobs.Script.WebHost.dll
 ```
 
-6. Install requirements for development and testing:
+6. Setup the 'azure' package in your new virtual environment
+   in development mode:
 
 ```shell
-$ pip install -r requirements-dev.txt
-```
-
-7. Install your local 'azure' package in your new virtual environment
-   (so that Python can import the `azure` package):
-
-```shell
-$ pip install -e .
-```
-
-8. Generate GRPC implementation files:
-
-```shell
-$ python setup.py gen_grpc
+$ pip install -U -e .[dev]
 ```
 
 

appveyor.yml

@@ -9,11 +9,9 @@ environment:
 install:
     - ps: .ci\appveyor_download_webhost.ps1
     - "%PYTHON% -m pip install --upgrade pip wheel setuptools"
-    - "%PYTHON% -m pip install --upgrade -r requirements-dev.txt"
 
 build_script:
-    - "%PYTHON% setup.py build"
-    - "%PYTHON% setup.py gen_grpc"
+    - "%PYTHON% -m pip install -U -e .[dev]"
 
 test_script:
     - set PYAZURE_WEBHOST_DLL=%cd%\%PYAZURE_WEBHOST_PATH%\%PYAZURE_WEBHOST_EXECUTABLE% && %PYTHON% .ci\appveyor_setup_worker.py > worker_path && set /p PYAZURE_WORKER_DIR=<worker_path && %PYTHON% setup.py test

requirements-dev.txt

@@ -1,2 +1,3 @@
-grpcio
-grpcio-tools
+# Please list runtime dependencies in setup.py 'install_requires' and
+# 'extras_require'.
+.

requirements.txt

@@ -1,26 +1,19 @@
-import distutils.cmd
 import os
 import subprocess
 import sys
+from distutils.command import build
 
 from setuptools import setup
+from setuptools.command import develop
 
 
-class GenGrpcCommand(distutils.cmd.Command):
-    description = 'Generate GRPC Python bindings.'
-    user_options = []
-
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
+class BuildGRPC:
+    """Generate gRPC bindings."""
+    def _gen_grpc(self):
         cwd = os.getcwd()
 
         subprocess.run([
-            'python', '-m', 'grpc_tools.protoc',
+            sys.executable, '-m', 'grpc_tools.protoc',
             '-I', os.sep.join(('azure', 'worker', 'protos')),
             '--python_out', cwd,
             '--grpc_python_out', cwd,
@@ -30,6 +23,18 @@ def run(self):
         ], check=True, stdout=sys.stdout, stderr=sys.stderr)
 
 
+class build(build.build, BuildGRPC):
+    def run(self, *args, **kwargs):
+        self._gen_grpc()
+        super().run(*args, **kwargs)
+
+
+class develop(develop.develop, BuildGRPC):
+    def run(self, *args, **kwargs):
+        self._gen_grpc()
+        super().run(*args, **kwargs)
+
+
 setup(
     name='azure',
     version='0.0.1',
@@ -45,11 +50,25 @@ def run(self):
         'Development Status :: 3 - Alpha',
     ],
     license='MIT',
-    packages=['azure', 'azure.worker', 'azure.functions'],
+    packages=['azure', 'azure.functions',
+              'azure.worker', 'azure.worker.protos'],
     provides=['azure'],
+    install_requires=[
+        'grpcio',
+        'grpcio-tools',
+    ],
+    extras_require={
+        'dev': [
+            'pytest',
+            'requests',
+            'mypy',
+            'flake8',
+        ]
+    },
     include_package_data=True,
     cmdclass={
-        'gen_grpc': GenGrpcCommand
+        'build': build,
+        'develop': develop
     },
     test_suite='tests'
 )