[jira] [Commented] (CASSANDRA-3220) add describe_ring to cli

["Pavel Yaskevich (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-3220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13139032#comment-13139032 ] 

Pavel Yaskevich commented on CASSANDRA-3220:
--------------------------------------------

I think that this should handle empty <keyspace> argument in the same way `describe` does. 
If you want to show exception message instead of "null" you should catch InvalidRequestionException and TException inside of your method.
According to "datacenter=null" problem, it was already fixed by CASSANDRA-3403.

Also you have a doubled "," in the error message, it should be "String.format("Keyspace with name '%s' wasn't found, please, authorize to one of the keyspaces first.", entityName)". 

                
> add describe_ring to cli
> ------------------------
>
>                 Key: CASSANDRA-3220
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3220
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tools
>            Reporter: Jackson Chung
>            Assignee: Jackson Chung
>            Priority: Minor
>             Fix For: 1.0.2
>
>         Attachments: patch3220.diff
>
>
> Lately I have found the describe_ring feature was needed to debug/analyze issue, but the cli does not have this available.
> So just in case it is useful, please see the attached patch.
> here is the sample output:
> {noformat}
> [default@unknown] help;
> ...
> ...
> decr                    Decrements a counter column.
> describe ring           Describe the token range information.
> describe cluster        Describe the cluster configuration.
> ...
> ...
> [default@unknown] help describe ring;
> describe ring <keyspace>;
> Describes the token range settings for the named keyspace.
> Required Parameters:
> - keyspace: Name of the keyspace to describe the token range.
> Examples:
> describe ring <keyspace>; - Describes the token range settings for the named keyspace.
> [default@unknown] describe ring Keyspace3;
> TokenRange: 
>         TokenRange(start_token:9739248273232290250409572410247679660, end_token:9739248273232290250409572410247679660, endpoints:[192.168.0.125], rpc_endpoints:[192.168.0.125], endpoint_details:[EndpointDetails(host:192.168.0.125, port:9160, datacenter:168)])
> [default@unknown] describe ring fooks;
> Keyspace with name 'fooks' wasn't found, , please, authorize to one of the keyspaces first.
> [default@unknown] describe ring;
> Syntax error at position 13: mismatched input ';' expecting set null
> {noformat}

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