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Date: Sun, 23 Aug 2009 23:38:59 -0700 (PDT)
From: "Eric Yang (JIRA)" <jira@apache.org>
To: chukwa-dev@hadoop.apache.org
Subject: [jira] Commented: (CHUKWA-384) REST API for HICC
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    [ https://issues.apache.org/jira/browse/CHUKWA-384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12746747#action_12746747 ] 

Eric Yang commented on CHUKWA-384:
----------------------------------

The charting widget could be modified with the following changes in mind:

{
"id":"rest_metrics",
"title":"Metrics From Rest API",
"version":"0.1",
"categories":"System Metrics,Cluster,Status",
"module":"iframe/jsp/single-series-chart-javascript.jsp",
"description":"Display cluster related stats by percentage",
"screendump":"\/images\/server_load.gif",
"refresh":"15",
"parameters":[
*{"name":"series","type":"string","value":"series_name","edit":"0"},*
*{"name":"data","type":"string","value":"http://localhost:8080/hicc/jsp/test.jsp","edit":"0"},*
{"name":"y_axis_max","type":"string","value":"100","edit":"0"},
{"name":"display_percentage","type":"string","value":"1","edit":"0"},
{"name":"period","type":"custom","control":"period_control","value":"","label":"Period"},
{"name":"width","type":"select","value":"300","label":"Width","options":[{"label":"300","value":"300"},{"label":"1200","value":"1200"}]},
{"name":"height","type":"select","value":"200","label":"Height","options":[{"label":"200","value":"200"},{"label":"1000","value":"1000"}]},
{"name":"legend","type":"radio","value":"on","label":"Show Legends","options":[{"label":"On","value":"on"},{"label":"Off","value":"off"}]}
]}

By using the *series*,*data* key value pair, it will fetch data from the remote REST API data source.  The remote data source should return:

{"name":"series_name","data":[[x,y],[x2,y2]]}

Multiple data could be submitted, and the system will send ajax request to fetch each series.  Let me know if this works for you.

> REST API for HICC
> -----------------
>
>                 Key: CHUKWA-384
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-384
>             Project: Hadoop Chukwa
>          Issue Type: New Feature
>            Reporter: Stephen Nelson
>            Assignee: Eric Yang
>   Original Estimate: 240h
>  Remaining Estimate: 240h
>
> Currently, the HICC graphing JSP is capable of reading any JDBC-compatible database and graphing the results, but it isn't able to parse JSON or other data from REST data sources.  It would be good to define a REST data format and add the ability for the HICC graph JSP to request and understand this format.

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