[GitHub] kramasamy commented on a change in pull request #2929: Make TopologyBuilder less permissive

[GitBox <gi...@apache.org>]

kramasamy commented on a change in pull request #2929: Make TopologyBuilder less permissive
URL: https://github.com/apache/incubator-heron/pull/2929#discussion_r197618933
 
 

 ##########
 File path: heronpy/api/topology.py
 ##########
 @@ -194,24 +194,25 @@ def get_heron_options_from_env():
 
     Currently supports the following options natively:
 
-    - `cmdline.topologydefn.tmpdirectory`: the directory to which this
+    - `cmdline.topologydefn.tmpdirectory`: (required) the directory to which this
     topology's defn file is written
-    - `cmdline.topology.initial.state`: the initial state of the topology
-    - `cmdline.topology.name`: topology name on deployment
+    - `cmdline.topology.initial.state`: (default: "RUNNING") the initial state of the topology
+    - `cmdline.topology.name`: (default: class name) topology name on deployment
 
     Returns: map mapping from key to value
     """
-    heron_options_raw = os.environ.get("HERON_OPTIONS", None)
+    heron_options_raw = os.environ.get("HERON_OPTIONS")
     if heron_options_raw is None:
       raise RuntimeError("HERON_OPTIONS environment variable not found")
 
-    ret = {}
-    heron_opt_list = heron_options_raw.replace("%%%%", " ").split(',')
-    for opt_raw in heron_opt_list:
-      opt = opt_raw.split("=")
-      if len(opt) == 2:
-        ret[opt[0]] = opt[1]
-    return ret
+    options = {}
+    for option_line in heron_options_raw.replace("%%%%", " ").split(','):
 
 Review comment:
   It might be worth trying and if it works - we can use json dumps and load.

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