Use tornado's AsyncHttpClient for ApiClient

atst/api_client.py

@@ -1,15 +1,13 @@
-import requests
 import tornado.gen
-from concurrent.futures import ThreadPoolExecutor
 from tornado.httpclient import AsyncHTTPClient
+from json import dumps, loads
 
 
 class ApiClient(object):
 
     def __init__(self, base_url):
         self.base_url = base_url
-        self.session = requests.Session()
-        self.executor = ThreadPoolExecutor()
+        self.client = AsyncHTTPClient()
 
     @tornado.gen.coroutine
     def get(self, path, **kwargs):
@@ -17,19 +15,32 @@ class ApiClient(object):
 
     @tornado.gen.coroutine
     def put(self, path, **kwargs):
-        return self.make_request('PUT', self.base_url + path, **kwargs)
+        return (yield self.make_request('PUT', self.base_url + path, **kwargs))
 
     @tornado.gen.coroutine
     def post(self, path, **kwargs):
-        return self.make_request('POST', self.base_url + path, **kwargs)
+        return (yield self.make_request('POST', self.base_url + path, **kwargs))
 
     @tornado.gen.coroutine
     def delete(self, path, **kwargs):
-        return self.make_request('DELETE', self.base_url + path, **kwargs)
+        return (yield self.make_request('DELETE', self.base_url + path, **kwargs))
 
     @tornado.gen.coroutine
     def make_request(self, method, url, **kwargs):
-        def _make_request(_method, _url, **kwargs):
-            return requests.request(_method, _url, **kwargs)
+        # If 'json' kwarg is specified, serialize it to 'body' and update
+        # the Content-Type.
+        if 'json' in kwargs:
+            kwargs['body'] = dumps(kwargs['json'])
+            del kwargs['json']
+            headers = kwargs.get('headers', {})
+            headers['Content-Type'] = 'application-json'
+            kwargs['headers'] = headers
 
-        return (yield self.executor.submit(_make_request, 'GET', url))
+        response = yield self.client.fetch(url, method=method, **kwargs)
+        return self.adapt_response(response)
+
+    def adapt_response(self, response):
+        if response.headers['Content-Type'] == 'application/json':
+            json = loads(response.body)
+            setattr(response, 'json', json)
+        return response

tests/test_api_client.py

@@ -0,0 +1,10 @@
+import pytest
+
+from atst.api_client import ApiClient
+
+
+@pytest.mark.gen_test
+def test_api_client(http_client, base_url):
+    client = ApiClient(base_url)
+    response = yield client.get('')
+    assert response.code == 200