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Posted to dev@ambari.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2014/11/20 22:39:34 UTC
[jira] [Commented] (AMBARI-8400) Alerts: Template Engine for
Dispatching
[ https://issues.apache.org/jira/browse/AMBARI-8400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220051#comment-14220051 ]
Hadoop QA commented on AMBARI-8400:
-----------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12682713/AMBARI-8400.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author tags.
{color:green}+1 tests included{color}. The patch appears to include 1 new or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings.
{color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in ambari-server.
Test results: https://builds.apache.org/job/Ambari-trunk-test-patch/709//testReport/
Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/709//console
This message is automatically generated.
> Alerts: Template Engine for Dispatching
> ---------------------------------------
>
> Key: AMBARI-8400
> URL: https://issues.apache.org/jira/browse/AMBARI-8400
> Project: Ambari
> Issue Type: Task
> Components: alerts, ambari-server
> Affects Versions: 2.0.0
> Reporter: Jonathan Hurley
> Assignee: Jonathan Hurley
> Fix For: 2.0.0
>
> Attachments: AMBARI-8400.patch
>
>
> Ambari's various dispatchers (such as Email and SNMP) can benefit from having a mechanism where a template can be defined for the construction of notification data. This decouples the content that Ambari is sending from the logic to compute the aggregate alerts.
> Apache Velocity is a good choice for this requirement as it includes a maturing template language, VTL.
> A single XML file that ships with Ambari will contain the default templates for known alert target types. There will be an option to override the use of this file with a user-specified location via ambari.properties. In the event that a user-specific XML file cannot be parsed, appropriate exceptions will be thrown, but the {{AlertNoticeDispatchService}} will attempt to gracefully fallback on other content rendering options (such as the internal XML file).
> The following data should be exposed to VTL:
> - a list of all alert changes
> -- alert name, state, date, label
> -- a list for each state change
> -- lists for all alerts, broke down by service and state
> - a list of all services with an alert
> - a list of all hosts with an alert
> - total counts of changes separated
> -- one count for each alert state
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