Ensure HomeAssistant can still restart when a library file is missing (#46664)

homeassistant/config.py

@@ -76,6 +76,13 @@ AUTOMATION_CONFIG_PATH = "automations.yaml"
 SCRIPT_CONFIG_PATH = "scripts.yaml"
 SCENE_CONFIG_PATH = "scenes.yaml"
 
+LOAD_EXCEPTIONS = (ImportError, FileNotFoundError)
+INTEGRATION_LOAD_EXCEPTIONS = (
+    IntegrationNotFound,
+    RequirementsNotFound,
+    *LOAD_EXCEPTIONS,
+)
+
 DEFAULT_CONFIG = f"""
 # Configure a default setup of Home Assistant (frontend, api, etc)
 default_config:
@@ -689,7 +696,7 @@ async def merge_packages_config(
                     hass, domain
                 )
                 component = integration.get_component()
-            except (IntegrationNotFound, RequirementsNotFound, ImportError) as ex:
+            except INTEGRATION_LOAD_EXCEPTIONS as ex:
                 _log_pkg_error(pack_name, comp_name, config, str(ex))
                 continue
 
@@ -746,7 +753,7 @@ async def async_process_component_config(
     domain = integration.domain
     try:
         component = integration.get_component()
-    except ImportError as ex:
+    except LOAD_EXCEPTIONS as ex:
         _LOGGER.error("Unable to import %s: %s", domain, ex)
         return None
 
@@ -825,7 +832,7 @@ async def async_process_component_config(
 
         try:
             platform = p_integration.get_platform(domain)
-        except ImportError:
+        except LOAD_EXCEPTIONS:
             _LOGGER.exception("Platform error: %s", domain)
             continue
 

tests/test_config.py

@@ -1088,6 +1088,26 @@ async def test_component_config_exceptions(hass, caplog):
         in caplog.text
     )
 
+    # get_component raising
+    caplog.clear()
+    assert (
+        await config_util.async_process_component_config(
+            hass,
+            {"test_domain": {}},
+            integration=Mock(
+                pkg_path="homeassistant.components.test_domain",
+                domain="test_domain",
+                get_component=Mock(
+                    side_effect=FileNotFoundError(
+                        "No such file or directory: b'liblibc.a'"
+                    )
+                ),
+            ),
+        )
+        is None
+    )
+    assert "Unable to import test_domain: No such file or directory" in caplog.text
+
 
 @pytest.mark.parametrize(
     "domain, schema, expected",