Add CORS support

idunn/api/places.py

@@ -1,6 +1,7 @@
 import logging
 from elasticsearch import Elasticsearch
 from apistar.exceptions import BadRequest, NotFound
+from apistar.http import Response
 
 from idunn import settings
 from idunn.utils import prometheus
@@ -20,11 +21,13 @@ def validate_verbosity(verbosity):
         })
     return verbosity
 
+
 def validate_lang(lang):
     if not lang:
         return settings['DEFAULT_LANGUAGE']
     return lang.lower()
 
+
 def get_place(id, es: Elasticsearch, indices: IndexNames, lang=None, type=None, verbosity=DEFAULT_VERBOSITY) -> Place:
     """Main handler that returns the requested place"""
     verbosity = validate_verbosity(verbosity)
@@ -60,3 +63,12 @@ def get_place_latlon(lat: float, lon: float, es: Elasticsearch, lang=None, verbo
         closest_place = None
     place = Latlon(lat, lon, closest_address=closest_place)
     return place.load_place(lang, verbosity)
+
+
+def handle_option(id, es: Elasticsearch, indices: IndexNames, lang=None, type=None, verbosity=DEFAULT_VERBOSITY):
+    headers = {
+        'Access-Control-Allow-Origin': '*',
+        'Access-Control-Allow-Headers': '*',
+        'Access-Control-Allow-Methods': 'GET',
+    }
+    return Response('', headers=headers)

idunn/api/urls.py

@@ -1,25 +1,29 @@
+import os
+
 from apistar import Route
 from apistar_prometheus import expose_metrics, expose_metrics_multiprocess
 
 from .pois import get_poi
-from .places import get_place, get_place_latlon
+from .places import get_place, get_place_latlon, handle_option
 from .status import get_status
 from .places_list import get_places_bbox, get_events_bbox
 from .categories import get_all_categories
 from .closest import closest_address
 
+
 def get_metric_handler(settings):
     """Select the prometheus multiprocess mode or not"""
     if settings['PROMETHEUS_MULTIPROC']:
         return expose_metrics_multiprocess
     return expose_metrics
 
+
 def get_api_urls(settings):
     """Defines all endpoints
     and handlers to build response
     """
     metric_handler = get_metric_handler(settings)
-    return [
+    routes = [
         Route('/metrics', 'GET', handler=metric_handler),
         Route('/status', 'GET', handler=get_status),
 
@@ -40,3 +44,6 @@ def get_api_urls(settings):
         # Kuzzle events
         Route('/events', 'GET', handler=get_events_bbox),
     ]
+    if os.environ.get('ENABLE_OPTION_REQUESTS'):
+        routes.append(Route('/places/{whatever}', 'OPTION', handler=handle_option))
+    return routes