Damien Hardy created HADOOP-8922:
------------------------------------
Summary: Proviade alternate JSONP output for JMXJsonServlet to
enable javascript in browser dashboard
Key: HADOOP-8922
URL: https://issues.apache.org/jira/browse/HADOOP-8922
Project: Hadoop Common
Issue Type: Improvement
Components: metrics
Reporter: Damien Hardy
Priority: Trivial
JMXJsonServlet may provide a JSONP alternative to JSON to allow javascript in
browser GUI to make requests.
For security purpose about XSS, browser limit request on other domain[¹|#ref1]
so that metrics from cluster nodes cannot be used in a full js interface.
An example of this kind of dashboard is the bigdesk[²|#ref2] plugin for
ElasticSearch.
In order to achieve that the servlet should detect a GET parameter
(callback=xxxx) and modify the response by surrounding the Json value with
"xxxx(" and ");" [³|#ref3]
value "xxxx" is variable and should be provide by client as callback parameter
value.
{anchor:ref1}[1]
https://developer.mozilla.org/en-US/docs/Same_origin_policy_for_JavaScript
{anchor:ref2}[2] https://github.com/lukas-vlcek/bigdesk
{anchor:ref3}[3] http://en.wikipedia.org/wiki/JSONP
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
