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METRON-435 Create Stellar REPL #262
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did you mean to title this METRON-435? |
cestella
suggested changes
Sep 20, 2016
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| context = new Context.Builder() | ||
| .with(Context.Capabilities.GLOBAL_CONFIG, () -> global) |
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Can we add the Context.Capabilities.ZOOKEEPER_CLIENT as well? Looks like we have it right there on line 81.
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Added zookeeper client to the Context.
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| public class StellarShell { | ||
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| private static final String WELCOME = "Stellar, Go!"; |
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Oops, yes. Let me fix. |
nickwallen
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Also, added a doc string type functionality. I couldn't help myself. |
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What, no autocomplete? ;) |
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+1, we can iterate from here. I think this is going to be super useful. |
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Ha, trust me, I wanted to do it. |
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Bonus points if you had used https://github.com/qmx/jreadline and given us emacs and vi mode as well as a hook for autocomplete :) EDIT: this appears to now be https://github.com/aeshell/aesh |
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Created this for debugging some issues I was having in running Stellar functions are on a live cluster. Thought this would be generally useful on its own.
METRON-435
Create a REPL (Read Eval Print Loop) for the Stellar language that helps in debugging, troubleshooting and learning Stellar. The Stellar DSL (domain specific language) is used to act upon streaming data within Apache Storm. It is difficult to troubleshoot Stellar when it can only be executed within a Storm topology. This REPL is intended to help mitigate that problem by allowing a user to replicate data encountered in production, isolate initialization errors, or understand function resolution problems.