Expose API to view error log

homeassistant/bootstrap.py

@@ -34,6 +34,7 @@ _LOGGER = logging.getLogger(__name__)
 ATTR_COMPONENT = 'component'
 
 PLATFORM_FORMAT = '{}.{}'
+ERROR_LOG_FILENAME = 'home-assistant.log'
 
 
 def setup_component(hass, domain, config=None):
@@ -252,7 +253,7 @@ def enable_logging(hass, verbose=False, daemon=False, log_rotate_days=None):
                 "Colorlog package not found, console coloring disabled")
 
     # Log errors to a file if we have write access to file or config dir
-    err_log_path = hass.config.path('home-assistant.log')
+    err_log_path = hass.config.path(ERROR_LOG_FILENAME)
     err_path_exists = os.path.isfile(err_log_path)
 
     # Check if we can write to the error log if it exists or that

homeassistant/components/api.py

@@ -14,13 +14,14 @@ import json
 import homeassistant.core as ha
 from homeassistant.helpers.state import TrackStates
 import homeassistant.remote as rem
+from homeassistant.bootstrap import ERROR_LOG_FILENAME
 from homeassistant.const import (
     URL_API, URL_API_STATES, URL_API_EVENTS, URL_API_SERVICES, URL_API_STREAM,
     URL_API_EVENT_FORWARD, URL_API_STATES_ENTITY, URL_API_COMPONENTS,
-    URL_API_CONFIG, URL_API_BOOTSTRAP,
+    URL_API_CONFIG, URL_API_BOOTSTRAP, URL_API_ERROR_LOG,
     EVENT_TIME_CHANGED, EVENT_HOMEASSISTANT_STOP, MATCH_ALL,
     HTTP_OK, HTTP_CREATED, HTTP_BAD_REQUEST, HTTP_NOT_FOUND,
-    HTTP_UNPROCESSABLE_ENTITY)
+    HTTP_UNPROCESSABLE_ENTITY, CONTENT_TYPE_TEXT_PLAIN)
 
 
 DOMAIN = 'api'
@@ -89,6 +90,9 @@ def setup(hass, config):
     hass.http.register_path(
         'GET', URL_API_COMPONENTS, _handle_get_api_components)
 
+    hass.http.register_path('GET', URL_API_ERROR_LOG,
+                            _handle_get_api_error_log)
+
     return True
 
 
@@ -341,6 +345,13 @@ def _handle_get_api_components(handler, path_match, data):
     handler.write_json(handler.server.hass.config.components)
 
 
+def _handle_get_api_error_log(handler, path_match, data):
+    """ Returns the logged errors for this session. """
+    error_path = handler.server.hass.config.path(ERROR_LOG_FILENAME)
+    with open(error_path, 'rb') as error_log:
+        handler.write_file_pointer(CONTENT_TYPE_TEXT_PLAIN, error_log)
+
+
 def _services_json(hass):
     """ Generate services data to JSONify. """
     return [{"domain": key, "services": value}

homeassistant/const.py

@@ -151,6 +151,7 @@ URL_API_SERVICES_SERVICE = "/api/services/{}/{}"
 URL_API_EVENT_FORWARD = "/api/event_forwarding"
 URL_API_COMPONENTS = "/api/components"
 URL_API_BOOTSTRAP = "/api/bootstrap"
+URL_API_ERROR_LOG = "/api/error_log"
 
 HTTP_OK = 200
 HTTP_CREATED = 201
@@ -173,3 +174,4 @@ HTTP_HEADER_EXPIRES = "Expires"
 
 CONTENT_TYPE_JSON = "application/json"
 CONTENT_TYPE_MULTIPART = 'multipart/x-mixed-replace; boundary={}'
+CONTENT_TYPE_TEXT_PLAIN = 'text/plain'