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https://issues.apache.org/jira/browse/AMBARI-4253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nate Cole updated AMBARI-4253:
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Attachment: AMBARI-4253.patch
> API improvements for exposing alert info
> ----------------------------------------
>
> Key: AMBARI-4253
> URL: https://issues.apache.org/jira/browse/AMBARI-4253
> Project: Ambari
> Issue Type: Task
> Components: controller
> Reporter: Nate Cole
> Assignee: Nate Cole
> Fix For: 1.5.0
>
> Attachments: AMBARI-4253.patch
>
>
> Currently, alerts are exposed via the API from the Nagios Server host
> component.
> The component returns the "nagios_alerts" attribute, which contains the alert
> info for all the services and hosts.
> This "nagios_alerts" object can be potentially huge depending on the number
> of hosts, and the client code needs to parse and rollup the info for all
> alerts. This is expensive and causes the UI to freeze every time
> "nagios_alerts" is updated from the server.
> Here's what the UI needs from the API:
> 1. Provide ability to get alerts by host
> 2. Provide ability to get alerts by service
> 3. Expose # of warn/critical alerts for the Service resource (rollup)
> 4. Expose # of warn/critical alerts for the Host resource (rollup)
> Solution will make an alerts structure part of the services and hosts and
> points. Samples:
> {noformat}
> GET /api/v1/clusters/c1/hosts?fields=alerts
> GET /api/v1/clusters/c1/hosts?fields=alerts/summary
> GET /api/v1/clusters/c1/hosts?fields=alerts/detail
> GET /api/v1/clusters/c1/services?fields=alerts
> GET /api/v1/clusters/c1/services?fields=alerts/summary
> GET /api/v1/clusters/c1/services?fields=alerts/detail
> {noformat}
> Expanded sample:
> {noformat}
> GET /api/v1/clusters/c1/hosts?fields=alerts
> {
> "href" : "...",
> "items" : [
> {
> "href" : "http://localhost:8080/api/v1/clusters/c1/hosts/h1";,
> "Hosts" : {
> "cluster_name" : "c1",
> "host_name" : "h1"
> },
> "alerts" : {
> "summary" : {
> "CRITICAL" : 2,
> "OK" : 19,
> "WARNING" : 0
> },
> "detail" : [
> {
> "description" : "Ambari Agent process",
> "host_name" : "h1",
> "last_status" : "OK",
> "last_status_time" : 1389125372,
> "service_name" : "AMBARI",
> "status" : "OK",
> "status_time" : 1389300812,
> "output" : "TCP OK - 0.000 second response time on port 8670"
> }, ...
> ]
> }
> },
> ...
> }
> {noformat}
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