postgres healthcheck works

anaxi/config.py

@@ -3,8 +3,9 @@ import pathlib
 from typing import Dict
 
 from anaxi.file_persistence import read_yaml
+from anaxi.logging import get_anaxi_logger
 
-logger = logging.getLogger()
+logger = get_anaxi_logger(__name__)
 
 
 class CosmosDBDatabaseConfig:
@@ -38,3 +39,38 @@ class CosmosDBDatabaseConfig:
             raise e
 
         return database_configs
+
+
+class PostgresDatabaseConfig:
+
+    config_root_key: str = "postgres-databases"
+
+    def __init__(self, host: str, port: int, dbname: str, user: str, password) -> None:
+        self.host = host
+        self.port = port
+        self.dbname = dbname
+        self.user = user
+        self.password = password
+
+    @classmethod
+    def from_dict(cls, a_dict) -> "PostgresDatabaseConfig":
+        return PostgresDatabaseConfig(**a_dict)
+
+    @classmethod
+    def from_yaml(cls, path: pathlib.Path) -> Dict[str, "PostgresDatabaseConfig"]:
+        yaml_contents = read_yaml(path)
+
+        postgres_contents = yaml_contents[PostgresDatabaseConfig.config_root_key]
+
+        try:
+            database_configs = {
+                db_name: PostgresDatabaseConfig.from_dict(db_config)
+                for db_name, db_config in postgres_contents.items()
+            }
+        except KeyError as e:
+            logger.error(
+                "Error reading Postgres config yaml file. The file seems malformed. Review the example in the repository."
+            )
+            raise e
+
+        return database_configs