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https://issues.apache.org/jira/browse/STORM-789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14499098#comment-14499098
]
ASF GitHub Bot commented on STORM-789:
--------------------------------------
Github user HeartSaVioR commented on the pull request:
https://github.com/apache/storm/pull/525#issuecomment-93873329
I merged into my repos branch and test, test runs fine.
Here's tester_bolt.py's context JSON.
```
{"task->component": {"20": "__acker", "21": "__acker", "22": "__acker",
"1": "1", "3": "__acker", "2": "2", "5": "__acker", "4": "__acker", "7":
"__acker", "6": "__acker", "9": "__acker", "8": "__acker", "11": "__acker",
"10": "__acker", "13": "__acker", "12": "__acker", "15": "__acker", "14":
"__acker", "17": "__acker", "16": "__acker", "19": "__acker", "18": "__acker"},
"sources->grouping": {}, "stream->target->grouping": {}, "streams":
["default"], "stream->outputfields": {"default": ["word"]}, "taskid": 2,
"componentid": "2"}
```
Looks good to me.
> Enhance topology context sent to multi-lang bolts and spouts
> ------------------------------------------------------------
>
> Key: STORM-789
> URL: https://issues.apache.org/jira/browse/STORM-789
> Project: Apache Storm
> Issue Type: Improvement
> Reporter: Dan Blanchard
> Assignee: Dan Blanchard
>
> I'm about to submit a pull request that adds a lot more contextual
> information to the "context" JSON dictionary that gets sent to multi-lang
> bolts and spouts as part of their initial handshake. These additions will
> make is so non-JVM developers have access to the sources, targets, and field
> names for their bolts and spouts.
> We will add support for this in streamparse (one of the more popular Python
> libraries for Storm) as soon as this gets merged in.
> Here are the details of what I've added:
> - componentid: the component ID for this task, so you don't have to look it
> up
> in "task->component" by "taskid"
> - streams: a list of all of the streams for this task
> - stream->outputfields: a mapping from stream names to output fields for
> that
> stream
> - stream->target->grouping: a mapping from stream names to the targets for
> this
> task to the kind of grouping they use.
> - sources->grouping: a mapping from the component IDs of the sources to
> their
> grouping.
> Note on groupings: groupings are either represented as a string (e.g.,
> "SHUFFLE") or a list of strings for field groupings.
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