Fix cloudwatch logs' response error (#1426)

moto/logs/responses.py

@@ -87,9 +87,8 @@ class LogsResponse(BaseResponse):
 
         events, next_backward_token, next_foward_token = \
             self.logs_backend.get_log_events(log_group_name, log_stream_name, start_time, end_time, limit, next_token, start_from_head)
-
         return json.dumps({
-            "events": [ob.__dict__ for ob in events],
+            "events": events,
             "nextBackwardToken": next_backward_token,
             "nextForwardToken": next_foward_token
         })

tests/test_logs/test_logs.py

@@ -59,3 +59,30 @@ def test_exceptions():
                 },
             ],
         )
+
+
+@mock_logs
+def test_put_logs():
+    conn = boto3.client('logs', 'us-west-2')
+    log_group_name = 'dummy'
+    log_stream_name = 'stream'
+    conn.create_log_group(logGroupName=log_group_name)
+    conn.create_log_stream(
+        logGroupName=log_group_name,
+        logStreamName=log_stream_name
+    )
+    messages = [
+        {'timestamp': 0, 'message': 'hello'},
+        {'timestamp': 0, 'message': 'world'}
+    ]
+    conn.put_log_events(
+        logGroupName=log_group_name,
+        logStreamName=log_stream_name,
+        logEvents=messages
+    )
+    res = conn.get_log_events(
+        logGroupName=log_group_name,
+        logStreamName=log_stream_name
+    )
+    events = res['events']
+    events.should.have.length_of(2)