fix openapi >= 3.0

examples/conf/test3.yaml

@@ -0,0 +1,25 @@
+openapi: 3.0.1
+info:
+  title: python-swagger-ui test api
+  description: python-swagger-ui test api
+  version: 1.0.0
+servers:
+- url: http://127.0.0.1:8989/api
+tags:
+- name: default
+  description: default tag
+paths:
+  /hello/world:
+    get:
+      tags:
+      - default
+      summary: output hello world.
+      responses:
+        200:
+          description: OK
+          content:
+            application/text:
+              schema:
+                type: object
+                example: Hello World!!!
+components: {}

swagger_ui/__init__.py

@@ -1,7 +1,6 @@
 from .core import Interface as api_doc
-
-from .old import TornadoInterface as tornado_api_doc
 from .old import AiohttpInterface as aiohttp_api_doc
 from .old import FlaskInterface as flask_api_doc
-from .old import SanicInterface as sanic_api_doc
 from .old import QuartInterface as quart_api_doc
+from .old import SanicInterface as sanic_api_doc
+from .old import TornadoInterface as tornado_api_doc

swagger_ui/core.py

@@ -1,6 +1,8 @@
 import json
+import re
 import sys
 import urllib.request
+from distutils.version import StrictVersion
 from pathlib import Path
 
 import yaml
@@ -73,7 +75,11 @@ def get_config(self, host):
             with urllib.request.urlopen(self._config_url) as config_file:
                 config = self._load_config(config_file.read())
 
-        config['host'] = host
+        if StrictVersion(config.get('openapi', '2.0.0')) >= StrictVersion('3.0.0'):
+            for server in config['servers']:
+                server['url'] = re.sub('//[a-z0-9\-\.:]+/?', '//{}/'.format(host), server['url'])
+        else:
+            config['host'] = host
         return config
 
     def _uri(self, suffix=''):