Polymer access to log file broken when using new log file command line (#9437)

* Changed api.py to use new log file name

* Only serve log file if logs are active

* Changed log file location to be in hass.data

homeassistant/bootstrap.py

@@ -27,6 +27,10 @@ from homeassistant.helpers.signal import async_register_signal_handling
 _LOGGER = logging.getLogger(__name__)
 
 ERROR_LOG_FILENAME = 'home-assistant.log'
+
+# hass.data key for logging information.
+DATA_LOGGING = 'logging'
+
 FIRST_INIT_COMPONENT = set((
     'recorder', 'mqtt', 'mqtt_eventstream', 'logger', 'introduction',
     'frontend', 'history'))
@@ -281,6 +285,8 @@ def async_enable_logging(hass: core.HomeAssistant, verbose: bool=False,
         logger.addHandler(async_handler)
         logger.setLevel(logging.INFO)
 
+        # Save the log file location for access by other components.
+        hass.data[DATA_LOGGING] = err_log_path
     else:
         _LOGGER.error(
             "Unable to setup error log %s (access denied)", err_log_path)

homeassistant/components/api.py

@@ -13,7 +13,7 @@ import async_timeout
 
 import homeassistant.core as ha
 import homeassistant.remote as rem
-from homeassistant.bootstrap import ERROR_LOG_FILENAME
+from homeassistant.bootstrap import DATA_LOGGING
 from homeassistant.const import (
     EVENT_HOMEASSISTANT_STOP, EVENT_TIME_CHANGED,
     HTTP_BAD_REQUEST, HTTP_CREATED, HTTP_NOT_FOUND,
@@ -51,8 +51,9 @@ def setup(hass, config):
     hass.http.register_view(APIComponentsView)
     hass.http.register_view(APITemplateView)
 
-    hass.http.register_static_path(
-        URL_API_ERROR_LOG, hass.config.path(ERROR_LOG_FILENAME), False)
+    log_path = hass.data.get(DATA_LOGGING, None)
+    if log_path:
+        hass.http.register_static_path(URL_API_ERROR_LOG, log_path, False)
 
     return True