Add set_default_level to logger (#14703)

* Add set_default_service to logger

* Fix 2-line lint error

* Add set_default_level to services.yaml

* Add tests for set_default_level

* Remove function and add else when setting default

homeassistant/components/logger.py

@@ -15,6 +15,7 @@ DOMAIN = 'logger'
 
 DATA_LOGGER = 'logger'
 
+SERVICE_SET_DEFAULT_LEVEL = 'set_default_level'
 SERVICE_SET_LEVEL = 'set_level'
 
 LOGSEVERITY = {
@@ -31,8 +32,11 @@ LOGSEVERITY = {
 LOGGER_DEFAULT = 'default'
 LOGGER_LOGS = 'logs'
 
+ATTR_LEVEL = 'level'
+
 _VALID_LOG_LEVEL = vol.All(vol.Upper, vol.In(LOGSEVERITY))
 
+SERVICE_SET_DEFAULT_LEVEL_SCHEMA = vol.Schema({ATTR_LEVEL: _VALID_LOG_LEVEL})
 SERVICE_SET_LEVEL_SCHEMA = vol.Schema({cv.string: _VALID_LOG_LEVEL})
 
 CONFIG_SCHEMA = vol.Schema({
@@ -76,12 +80,9 @@ async def async_setup(hass, config):
     """Set up the logger component."""
     logfilter = {}
 
-    # Set default log severity
-    logfilter[LOGGER_DEFAULT] = LOGSEVERITY['DEBUG']
-    if LOGGER_DEFAULT in config.get(DOMAIN):
-        logfilter[LOGGER_DEFAULT] = LOGSEVERITY[
-            config.get(DOMAIN)[LOGGER_DEFAULT]
-        ]
+    def set_default_log_level(level):
+        """Set the default log level for components."""
+        logfilter[LOGGER_DEFAULT] = LOGSEVERITY[level]
 
     def set_log_levels(logpoints):
         """Set the specified log levels."""
@@ -103,6 +104,12 @@ async def async_setup(hass, config):
             )
         )
 
+    # Set default log severity
+    if LOGGER_DEFAULT in config.get(DOMAIN):
+        set_default_log_level(config.get(DOMAIN)[LOGGER_DEFAULT])
+    else:
+        set_default_log_level('DEBUG')
+
     logger = logging.getLogger('')
     logger.setLevel(logging.NOTSET)
 
@@ -116,7 +123,14 @@ async def async_setup(hass, config):
 
     async def async_service_handler(service):
         """Handle logger services."""
-        set_log_levels(service.data)
+        if service.service == SERVICE_SET_DEFAULT_LEVEL:
+            set_default_log_level(service.data.get(ATTR_LEVEL))
+        else:
+            set_log_levels(service.data)
+
+    hass.services.async_register(
+        DOMAIN, SERVICE_SET_DEFAULT_LEVEL, async_service_handler,
+        schema=SERVICE_SET_DEFAULT_LEVEL_SCHEMA)
 
     hass.services.async_register(
         DOMAIN, SERVICE_SET_LEVEL, async_service_handler,

homeassistant/components/services.yaml

@@ -175,6 +175,12 @@ ffmpeg:
         example: 'binary_sensor.ffmpeg_noise'
 
 logger:
+  set_default_level:
+    description: Set the default log level for components.
+    fields:
+      level:
+        description: Default severity level. Possible values are notset, debug, info, warn, warning, error, fatal, critical
+        example: 'debug'
   set_level:
     description: Set log level for components.
 

tests/components/test_logger.py

@@ -10,6 +10,7 @@ from tests.common import get_test_home_assistant
 
 RECORD = namedtuple('record', ('name', 'levelno'))
 
+NO_DEFAULT_CONFIG = {'logger': {}}
 NO_LOGS_CONFIG = {'logger': {'default': 'info'}}
 TEST_CONFIG = {
     'logger': {
@@ -99,3 +100,29 @@ class TestUpdater(unittest.TestCase):
 
         self.assert_logged('asdf', logging.DEBUG)
         self.assert_logged('dummy', logging.WARNING)
+
+    def test_set_default_filter_empty_config(self):
+        """Test change default log level from empty configuration."""
+        self.setup_logger(NO_DEFAULT_CONFIG)
+
+        self.assert_logged('test', logging.DEBUG)
+
+        self.hass.services.call(
+            logger.DOMAIN, 'set_default_level', {'level': 'warning'})
+        self.hass.block_till_done()
+
+        self.assert_not_logged('test', logging.DEBUG)
+
+    def test_set_default_filter(self):
+        """Test change default log level with existing default."""
+        self.setup_logger(TEST_CONFIG)
+
+        self.assert_not_logged('asdf', logging.DEBUG)
+        self.assert_logged('dummy', logging.WARNING)
+
+        self.hass.services.call(
+            logger.DOMAIN, 'set_default_level', {'level': 'debug'})
+        self.hass.block_till_done()
+
+        self.assert_logged('asdf', logging.DEBUG)
+        self.assert_logged('dummy', logging.WARNING)