create configuration reader

src/hasskiosk/config.py

@@ -0,0 +1,68 @@
+"""Configuration management from environment."""
+
+import logging.config
+from logging import getLogger
+from typing import Any, Dict
+
+from environs import Env
+
+from ._version import version
+
+
+def read_config() -> Dict[str, Any]:
+    """Read the configuration from the environment."""
+    env = Env()
+    env.read_env()
+    with env.prefixed("HASSKIOSK_"):
+        config = {
+            "sysname": env("SYSTEM_NAME", "hasskiosk"),
+            "version": version,
+            "logging": {
+                "version": 1,
+                "disable_existing_loggers": False,
+                "formatters": {
+                    "simple": {
+                        "format": "%(asctime)s %(levelname)s (%(name)s) %(message)s",
+                        "converter": "time.gmtime",
+                    },
+                },
+                "handlers": {
+                    "stdout": {
+                        "class": "logging.StreamHandler",
+                        "level": env("LOG_LEVEL", "INFO"),
+                        "formatter": "simple",
+                        "stream": "ext://sys.stdout",
+                    },
+                },
+                "loggers": {
+                    "hasskiosk": {
+                        "level": "DEBUG",
+                        "propagate": "yes",
+                    },
+                },
+                "root": {
+                    "level": "WARN",
+                    "handlers": ["stdout"],
+                },
+            },
+        }
+        with env.prefixed("TOPIC_"):
+            config["topics"] = {
+                "presence": env("PRESENCE"),
+            }
+        with env.prefixed("MQTT_"):
+            config["mqtt"] = {
+                "host": env("HOST"),
+                "port": env.int("PORT", 1883),
+                "username": env("USERNAME"),
+                "password": env("PASSWORD"),
+                "keepalive": env.int("KEEPALIVE", 60),
+            }
+    return config
+
+
+def configure_logging(config: Dict[str, Any]) -> None:
+    """Configure logging using the logging key from the configuration."""
+    logging.config.dictConfig(config["logging"])
+    log = getLogger(__name__)
+    log.info("%s v%s starting up.", config["sysname"], config["version"])

tests/test_config.py

@@ -0,0 +1,81 @@
+"""Tests for the configuration management."""
+
+import logging
+from typing import Any, Dict
+
+import pytest
+
+from hasskiosk import __version__
+from hasskiosk.config import configure_logging, read_config
+
+
+@pytest.fixture(autouse=True)
+def mock_env(monkeypatch):
+    """Environment mock to test values."""
+    monkeypatch.setenv("HASSKIOSK_TOPIC_PRESENCE", "home/test/presence")
+    monkeypatch.setenv("HASSKIOSK_MQTT_HOST", "ha.example.com")
+    monkeypatch.setenv("HASSKIOSK_MQTT_USERNAME", "testymctesterson")
+    monkeypatch.setenv("HASSKIOSK_MQTT_PASSWORD", "hunter2")
+
+
+@pytest.fixture
+def logging_config() -> Dict[str, Any]:
+    """logging configuration fixture."""
+    config = {
+        "version": 1,
+        "disable_existing_loggers": False,
+        "formatters": {
+            "simple": {
+                "format": "%(asctime)s %(levelname)s (%(name)s) %(message)s",
+                "converter": "time.gmtime",
+            },
+        },
+        "handlers": {
+            "stdout": {
+                "class": "logging.StreamHandler",
+                "level": "DEBUG",
+                "formatter": "simple",
+                "stream": "ext://sys.stdout",
+            },
+        },
+        "loggers": {
+            "hasskiosk": {
+                "level": "DEBUG",
+                "propagate": "yes",
+            },
+        },
+        "root": {
+            "level": "WARN",
+            "handlers": ["stdout"],
+        },
+    }
+    return config
+
+
+def test_read_config():
+    """Test the read_config function."""
+    config = read_config()
+    assert config["version"] == __version__
+    assert config["sysname"] == "hasskiosk"
+    assert config["mqtt"] == {
+        "host": "ha.example.com",
+        "username": "testymctesterson",
+        "password": "hunter2",
+        "port": 1883,
+        "keepalive": 60,
+    }
+
+
+def test_configure_logging(logging_config):
+    """Test the logging configuration."""
+    config = {
+        "version": "1.2.3.test",
+        "sysname": "testkiosk",
+        "logging": logging_config,
+    }
+    configure_logging(config)
+    log = logging.getLogger(__name__)
+    rootlog = log
+    while rootlog.parent:
+        rootlog = rootlog.parent
+    assert len(rootlog.handlers) == 1

tox.ini

@@ -61,7 +61,7 @@ deps =
     {[testenv:security]deps}
     {[testenv:security]deps}
     {[testenv:lint]deps}
-envdir = {toxinidir}/.venv
+#envdir = {toxinidir}/.venv
 usedevelop = True
 
 [pycodestyle]