Add CI actions

.github/workflows/psm-interop.yaml

@@ -0,0 +1,96 @@
+name: PSM Interop
+
+env:
+  # Force the stdout and stderr streams to be unbuffered
+  PYTHONUNBUFFERED: 1
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  unittest:
+    # By default, only version is printed out in parens, e.g. "unittest (3.10)"
+    # This changes it to "unittest (python3.10)"
+    name: "unittest (python${{ matrix.python_version }})"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python_version: ["3.9", "3.10", "3.11"]
+      fail-fast: false
+    permissions:
+      pull-requests: read  # Used by paths-filter to read the diff.
+      contents: read
+    defaults:
+      run:
+        working-directory: './'
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "${{ matrix.python_version }}"
+          cache: 'pip'
+          cache-dependency-path: './requirements.lock'
+
+      - name: "Install requirements"
+        run: |
+          pip list
+          pip install --upgrade pip setuptools
+          pip list
+          pip install -r requirements.lock
+          pip list
+
+      - name: "Generate protos"
+        run: >
+          python -m grpc_tools.protoc --proto_path=.
+          --python_out=. --grpc_python_out=.
+          protos/empty.proto
+          protos/messages.proto
+          protos/test.proto
+
+      - name: "Run unit tests"
+        run: python -m tests.unit
+
+  black-check:
+     runs-on: ubuntu-latest
+     steps:
+        - uses: actions/checkout@v4
+        - uses: psf/black@stable
+          with:
+             options: "--check --config black.toml"
+             version: "23.3.0"
+
+  isort-check:
+    runs-on: ubuntu-latest
+    steps:
+        - uses: actions/checkout@v4
+        - uses: isort/isort-action@v1
+          with:
+            configuration: "--diff --check-only --dont-follow-links --settings-path=black.toml"
+            isort-version: "5.9.2"
+
+  pylint-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.9"
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          pip list
+          python -m pip install --upgrade pip
+          pip install pylint==2.2.2 astroid==2.3.3 toml==0.10.2 "isort>=4.3.0,<5.0.0"
+          pip list
+      - name: Analysing the code with pylint
+        run: |
+         python -m pylint 'bin' 'framework' --rcfile=.pylintrc -rn
+         python -m pylint 'tests' --rcfile=tests/pylintrc-tests -rn

.pylintrc

@@ -0,0 +1,93 @@
+[VARIABLES]
+
+# TODO(https://github.com/PyCQA/pylint/issues/1345): How does the inspection
+# not include "unused_" and "ignored_" by default?
+dummy-variables-rgx=^ignored_|^unused_|_
+
+[DESIGN]
+
+# NOTE(nathaniel): Not particularly attached to this value; it just seems to
+# be what works for us at the moment (excepting the dead-code-walking Beta
+# API).
+max-args=14
+max-parents=8
+
+[MISCELLANEOUS]
+
+# NOTE(nathaniel): We are big fans of "TODO(<issue link>): " and
+# "NOTE(<username or issue link>): ". We do not allow "TODO:",
+# "TODO(<username>):", "FIXME:", or anything else.
+notes=FIXME,XXX
+
+[MESSAGES CONTROL]
+
+disable=
+	# TODO(https://github.com/PyCQA/pylint/issues/59#issuecomment-283774279):
+	# Enable cyclic-import after a 1.7-or-later pylint release that
+	# recognizes our disable=cyclic-import suppressions.
+	cyclic-import,
+	# TODO(https://github.com/grpc/grpc/issues/8622): Enable this after the
+	# Beta API is removed.
+	duplicate-code,
+	# TODO(https://github.com/grpc/grpc/issues/261): Doesn't seem to
+	# understand enum and concurrent.futures; look into this later with the
+	# latest pylint version.
+	import-error,
+	# TODO(https://github.com/grpc/grpc/issues/261): Enable this one.
+	# Should take a little configuration but not much.
+	invalid-name,
+	# TODO(https://github.com/grpc/grpc/issues/261): This doesn't seem to
+	# work for now? Try with a later pylint?
+	locally-disabled,
+	# NOTE(nathaniel): What even is this? *Enabling* an inspection results
+	# in a warning? How does that encourage more analysis and coverage?
+	locally-enabled,
+	# NOTE(nathaniel): We don't write doc strings for most private code
+	# elements.
+	missing-docstring,
+	# NOTE(nathaniel): In numeric comparisons it is better to have the
+	# lesser (or lesser-or-equal-to) quantity on the left when the
+	# expression is true than it is to worry about which is an identifier
+	# and which a literal value.
+	misplaced-comparison-constant,
+	# NOTE(nathaniel): Our completely abstract interface classes don't have
+	# constructors.
+	no-init,
+	# TODO(https://github.com/grpc/grpc/issues/261): Doesn't yet play
+	# nicely with some of our code being implemented in Cython. Maybe in a
+	# later version?
+	no-name-in-module,
+	# TODO(https://github.com/grpc/grpc/issues/261): Suppress these where
+	# the odd shape of the authentication portion of the API forces them on
+	# us and enable everywhere else.
+	protected-access,
+	# NOTE(nathaniel): Pylint and I will probably never agree on this.
+	too-few-public-methods,
+	# NOTE(nathaniel): Pylint and I wil probably never agree on this for
+	# private classes. For public classes maybe?
+	too-many-instance-attributes,
+	# NOTE(nathaniel): Some of our modules have a lot of lines... of
+	# specification and documentation. Maybe if this were
+	# lines-of-code-based we would use it.
+	too-many-lines,
+	# TODO(https://github.com/grpc/grpc/issues/261): Maybe we could have
+	# this one if we extracted just a few more helper functions...
+	too-many-nested-blocks,
+	# TODO(https://github.com/grpc/grpc/issues/261): Disable unnecessary
+	# super-init requirement for abstract class implementations for now.
+	super-init-not-called,
+	# NOTE(nathaniel): A single statement that always returns program
+	# control is better than two statements the first of which sometimes
+	# returns program control and the second of which always returns
+	# program control. Probably generally, but definitely in the cases of
+	# if:/else: and for:/else:.
+	useless-else-on-loop,
+	no-else-return,
+	# NOTE(lidiz): Python 3 make object inheritance default, but not PY2
+	useless-object-inheritance,
+	# NOTE(lidiz): the import order will be enforced by isort instead
+	wrong-import-order,
+	# TODO(https://github.com/PyCQA/pylint/issues/3882): Upgrade Pylint
+	unsubscriptable-object,
+	# NOTE(sergiitk): yapf compatibility, ref #25071
+	bad-continuation,

bin/black.sh

@@ -57,4 +57,4 @@ else
 fi
 
 # shellcheck disable=SC2086
-exec python -m black --config=../../../black.toml ${MODE} .
+exec python -m black --config=black.toml ${MODE} .

bin/isort.sh

@@ -55,6 +55,6 @@ fi
 # typing is the only module allowed to put imports on the same line:
 # https://google.github.io/styleguide/pyguide.html#313-imports-formatting
 exec python -m isort "${MODE}" \
-  --settings-path=../../../black.toml \
+  --settings-path=black.toml \
   framework bin tests
 

black.toml

@@ -0,0 +1,14 @@
+[tool.black]
+line-length = 80
+target-version = [
+  "py39",
+  "py310",
+  "py311",
+]
+
+[tool.isort]
+profile = "black"
+line_length = 80
+single_line_exclusions = ["typing"]
+force_single_line = true
+force_sort_within_sections = true

framework/rpc/grpc_testing.py

@@ -23,9 +23,9 @@
 from grpc_health.v1 import health_pb2_grpc
 
 import framework.rpc
-from src.proto.grpc.testing import empty_pb2
-from src.proto.grpc.testing import messages_pb2
-from src.proto.grpc.testing import test_pb2_grpc
+from protos import empty_pb2
+from protos import messages_pb2
+from protos import test_pb2_grpc
 
 # Type aliases
 _LoadBalancerStatsRequest = messages_pb2.LoadBalancerStatsRequest

protos/empty.proto

@@ -0,0 +1,28 @@
+
+// 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.
+
+syntax = "proto3";
+
+package grpc.testing;
+
+// An empty message that you can re-use to avoid defining duplicated empty
+// messages in your project. A typical example is to use it as argument or the
+// return value of a service API. For instance:
+//
+//   service Foo {
+//     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
+//   };
+//
+message Empty {}