Should address issue nficano#38. The calls to determine whether or not a function exists wasn't calling multiple times if you have more than 50 lambda functions configured. For those users who have lots of functions defined, the deploy will try to re-create an existing lambda function

asaolabs · asaolabs · commit 06f9e8406a56 · 2017-09-15T21:30:37.000-04:00
diff --git a/aws_lambda/aws_lambda.py b/aws_lambda/aws_lambda.py
@@ -535,8 +535,13 @@ def function_exists(cfg, function_name):
         'lambda', aws_access_key_id, aws_secret_access_key,
         cfg.get('region'),
     )
-    functions = client.list_functions().get('Functions', [])
-    for fn in functions:
-        if fn.get('FunctionName') == function_name:
-            return True
-    return False
+
+    # Need to loop through until we get all of the lambda functions returned.  It appears
+    # to be only returning 50 functions at a time.
+    functions = []
+    functions_resp = client.list_functions()
+    functions.extend([f['FunctionName'] for f in functions_resp.get('Functions', [])])
+    while('NextMarker' in functions_resp):
+        functions_resp = client.list_functions(Marker=functions_resp.get('NextMarker'))
+        functions.extend([f['FunctionName'] for f in functions_resp.get('Functions', [])])
+    return function_name in functions
