Add Makefile

The logic of some of the scripts under "./scripts/" has been moved to
the new Makefile. This improves the developer experience since this
Makefile provides all the commands a developer needs to write code in
this repo.

Apart from that, this commit also fixes the last lint issues, so now the
linter returns a 10/10 score.

.github/workflows/test-pr.yaml

@@ -16,7 +16,7 @@ jobs:
           fetch-depth: 0
 
       - name: Check pyproject.toml
-        run: ./scripts/check-pyproject.sh
+        run: make check-pyproject
 
       - name: Set up Python 3.11
         uses: actions/setup-python@v4
@@ -30,7 +30,7 @@ jobs:
         run: poetry install
 
       - name: Linter
-        run: scripts/format-code.sh --check
+        run: make lint
 
       - name: Run unittests
-        run: poetry run pytest tests --timeout 15
+        run: make unittests

.gitignore

@@ -158,3 +158,6 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+# Make
+out/

Makefile

@@ -0,0 +1,45 @@
+SRC_DIR := ./generic_k8s_webhook
+TEST_DIR := ./tests
+SRC_FILES := $(shell find $(SRC_DIR) -type f -name '*.py')
+TEST_FILES := $(shell find $(TEST_DIR) -type f -name '*.py')
+
+out/install-deps.stamp: pyproject.toml poetry.lock
+	poetry install
+	mkdir -p out
+	touch out/install-deps.stamp
+
+install-deps: out/install-deps.stamp
+
+out/build.stamp: install-deps $(SRC_FILES) $(TEST_FILES)
+	poetry build
+	touch out/build.stamp
+
+build: out/build.stamp
+
+.PHONY: lint
+lint: build
+	poetry run isort $(SRC_DIR) $(TEST_DIR) -c
+	poetry run black $(SRC_DIR) $(TEST_DIR) --check
+	poetry run pylint $(SRC_DIR) -v
+
+.PHONY: format
+format: build
+	poetry run isort $(SRC_DIR) $(TEST_DIR)
+	poetry run black $(SRC_DIR) $(TEST_DIR)
+
+.PHONY: unittests
+unittests: build
+	poetry run pytest tests --timeout 15
+
+.PHONY: check-pyproject
+check-pyproject:
+	echo "Check the pyproject.toml has 'version = \"0.0.0\"'"
+	grep 'version = "0.0.0"' pyproject.toml
+
+.PHONY: docker
+docker:
+	docker build -t generic-k8s-webhook:latest .
+
+all-tests: check-pyproject lint unittests docker
+
+all-tests-seq: | check-pyproject lint unittests docker

docs/contributor-guide.md

@@ -3,7 +3,7 @@
 ## Required tools
 
 - [Git](https://git-scm.com/downloads)
-- [Python 3.10+](https://www.python.org/downloads/)
+- [Python 3.11+](https://www.python.org/downloads/)
 - [Poetry](https://python-poetry.org/docs/)
 - [Docker](https://docs.docker.com/install/)
 
@@ -29,44 +29,48 @@ poetry run python3 generic_k8s_webhook/main.py --config <GenericWebhookConfigFil
 
 ## Format code
 
-The project uses [black](https://black.readthedocs.io/en/stable/) and [isort](https://pycqa.github.io/isor) to format the code. To do so automatically, you can run this script:
+The project uses [black](https://black.readthedocs.io/en/stable/) and [isort](https://pycqa.github.io/isor) to format the code. To do so automatically, you can execute this make rule:
 
 ```bash
-./scripts/format-code.sh
+make format
 ```
 
 ## Test
 
-You can run all the tests executed in the CI by calling:
+You can run (sequentially) all the tests executed in the CI by calling:
 
 ```bash
-./scripts/run-all-tests.sh
+make all-tests-seq
 ```
 
 These tests can be splitted in 3 categories.
 
 ### Linter
 
-The linting phase checks that the code is well [formatted](#format-code). Apart from that, it also runs [pylint](https://www.pylint.org/). In order to pass the linting phase, `pylint` must not detect any error and must give an overall score of >9.5.
+The linting phase checks that the code is well [formatted](#format-code). Apart from that, it also runs [pylint](https://www.pylint.org/). In order to pass the linting phase, `pylint` must not detect any error,
+even if it's a minor one.
 
 ```bash
-./scripts/format-code.sh --check
+make lint
 ```
 
+In some cases, it's acceptable to add `# pylint: disable=<rule>` to disable
+a specific linting issue in a specific line, only if fixing this issue makes the code worse.
+
 ### Unittests and e2e tests
 
 We use [pytest](https://docs.pytest.org/en/7.3.x/) to test the functionality of the app. These tests are defined under the [tests](../tests/) directory and they are a mix of both pure unittests and end-to-end tests.
 
 ```bash
-poetry run pytest tests
+make unittests
 ```
 
 ### Docker build
 
 The last phase of our testing suite is building the docker container that has our app installed in it.
 
 ```bash
-docker build -t generic-k8s-webhook:latest .
+make docker
 ```
 
 ## Structure of the code

generic_k8s_webhook/config_parser/entrypoint.py

@@ -1,8 +1,8 @@
 import copy
 
-import generic_k8s_webhook.config_parser.expr_parser as expr_parser
 import generic_k8s_webhook.config_parser.operator_parser as op_parser
 from generic_k8s_webhook import utils
+from generic_k8s_webhook.config_parser import expr_parser
 from generic_k8s_webhook.config_parser.action_parser import ActionParserV1
 from generic_k8s_webhook.config_parser.jsonpatch_parser import JsonPatchParserV1
 from generic_k8s_webhook.config_parser.webhook_parser import WebhookParserV1

generic_k8s_webhook/config_parser/expr_parser.py

@@ -110,7 +110,7 @@ def ref(self, items):
 
     def boolean(self, items):
         (elem,) = items
-        elem_bool = True if elem == "true" else False
+        elem_bool = elem == "true"
         return op.Const(elem_bool)
 
 

generic_k8s_webhook/config_parser/operator_parser.py

@@ -1,8 +1,8 @@
 import abc
 import inspect
 
-import generic_k8s_webhook.config_parser.expr_parser as expr_parser
 from generic_k8s_webhook import operators, utils
+from generic_k8s_webhook.config_parser import expr_parser
 from generic_k8s_webhook.config_parser.common import ParsingException
 
 

generic_k8s_webhook/http_server.py

@@ -43,7 +43,7 @@ def run(self) -> None:
         while not self.stop_event.wait(self.refresh_period):
             try:
                 self._reload_manifest()
-            except Exception as e:
+            except Exception as e:  # pylint: disable=broad-exception-caught
                 logging.error(e, exc_info=True)
 
     def get_webhooks(self) -> list[Webhook]:
@@ -61,7 +61,7 @@ class BaseHandler(http.server.BaseHTTPRequestHandler):
     def do_GET(self):
         try:
             self._do_get()
-        except Exception as e:
+        except Exception as e:  # pylint: disable=broad-exception-caught
             logging.error(e, exc_info=True)
 
     def _do_get(self):
@@ -74,7 +74,7 @@ def _do_get(self):
     def do_POST(self):
         try:
             self._do_post()
-        except Exception as e:
+        except Exception as e:  # pylint: disable=broad-exception-caught
             logging.error(e, exc_info=True)
 
     def _do_post(self):
@@ -124,7 +124,7 @@ def _get_path(self) -> str:
 
 
 class Server:
-    def __init__(
+    def __init__(  # pylint: disable=too-many-arguments
         self, port: int, certfile: str, keyfile: str, generic_webhook_config_file: str, config_refresh_period: float = 5
     ) -> None:
         """Validating/Mutating webhook server. It listens to requests made at port <port>

generic_k8s_webhook/main.py

@@ -41,7 +41,7 @@ def cli(args):
 def start_server(args):
     server = Server(args.port, args.cert_file, args.key_file, args.config)
 
-    def stop_server(*args):
+    def stop_server(*args):  # pylint: disable=unused-argument
         threading.Thread(target=server.stop).start()
 
     signal.signal(signal.SIGINT, stop_server)

generic_k8s_webhook/operators.py

@@ -157,10 +157,9 @@ def get_value(self, contexts: list) -> Any:
         list_arg_values = self.args.get_value(contexts)
         if len(list_arg_values) < 2:
             return True
-        elif len(list_arg_values) == 2:
+        if len(list_arg_values) == 2:
             return self._op(list_arg_values[0], list_arg_values[1])
-        else:
-            raise ValueError("A comparison cannot have more than 2 operands")
+        raise ValueError("A comparison cannot have more than 2 operands")
 
     def input_type(self) -> type | None:
         return list[None]

pyproject.toml

@@ -37,6 +37,7 @@ missing-module-docstring, \
 missing-class-docstring, \
 missing-function-docstring, \
 too-few-public-methods, \
+fixme, \
 """
 
 [build-system]