question Partial Request and Ambari REST API in Archives of Support Questions (Read Only)

Partial Request and Ambari REST API

alexzagor — Wed, 02 Mar 2016 23:10:14 GMT

Hello everyone,

I am trying to get a list of alerts via REST API but I want it to be limited to only specific fields.

I am currently able to get all available information from the alerts, ie:

{
  "href" : "http://ambari_server:8080/api/v1/clusters/appslogs/alerts?Alert/state.in(WARNING,CRITICAL,UNKNOWN)&Alert/maintenance_state=OFF&fields=*",
  "items" : [
    {
      "href" : "http://ambari_server:8080/api/v1/clusters/appslogs/alerts/23",
      "Alert" : {
        "cluster_name" : "appslogs",
        "component_name" : "AMBARI_AGENT",
        "definition_id" : 50,
        "definition_name" : "ambari_agent_disk_usage",
        "host_name" : "host1.local",
        "id" : 23,
        "instance" : null,
        "label" : "Host Disk Usage",
        "latest_timestamp" : 1456931060177,
        "maintenance_state" : "OFF",
        "original_timestamp" : 1454589680156,
        "scope" : "HOST",
        "service_name" : "AMBARI",
        "state" : "WARNING",
        "text" : "Capacity Used: [71.56%, 6.0 GB], Capacity Total: [8.3 GB], path=/usr/hdp. Total free space is less than 2.0 GB"
      }

Does anybody know how to get ONLY state,host and text fields in response?

I tried the following request but it does not work:

http://ambari_server:8080/api/v1/clusters/appslogs/alerts?Alert/state.in(WARNING,CRITICAL,UNKNOWN)&Alert/maintenance_state=OFF&fields=state,host,text

What am I missing?

Apache Ambari Version: 2.2.0.0

Re: Partial Request and Ambari REST API

shishir_saxena4 — Thu, 03 Mar 2016 09:01:21 GMT

@Sunella Zag It looks like alerts resource doesn't allow filtering of fields. Only fields=* seems to be working. Specifying any fields results in default fields.

http://ambari_server:8080/api/v1/clusters/appslogs/alerts?Alert/state.in(WARNING,CRITICAL,UNKNOWN)&Alert/maintenance_state=OFF&fields=Alert/state,Alert/host,Alert/text

For services resource, I was able to specify a list of fields and get only required fields in my response.

http://ambari_server:8080/api/v1/clusters/hdp_dev/services/HDFS?fields=alerts_summary

so this seems to be a problem only with alert resource.

Re: Partial Request and Ambari REST API

shishir_saxena4 — Fri, 04 Mar 2016 02:05:28 GMT

@Sunella Zag Following fields are defaults and will be included in all responses

"cluster_name" , "definition_id", "definition_name" , "host_name" , "id" , "service_name"

You can include any additional fields using

http://ambari_server:8080/api/v1/clusters/appslogs/alerts?Alert/state.in(WARNING,CRITICAL,UNKNOWN)&Alert/maintenance_state=OFF&fields=Alert/state,Alert/text