How to monitor Elasticsearch snapshots

Elastic Stack Elasticsearch
1

Hello, I would like to use an alert to notify me of a snapshot failure. However, I quickly find myself limited because I am unable to define the type of monitor (Per query or per cluster metrics monitor).

I need to retrieve the last 4 snapshots, and if any of them are not in the SUCCESS state, I should receive an email notification.

Here is my configuration:

  name: "daily_backup",
  type: "monitor",
  enabled: true,
  schedule: {
    period: {
      interval: 1,
      unit: "MINUTES"
    }
  },
  inputs: [{
    search: {
      indices: ["test-logs-*"],
      query: {
        size: 0,
        aggregations: {},
        query: {
          snapshot.status: 'FAILED'
        }
      }
    }
  }],
  triggers: [
    {
    name : "[Trigger for 'daily_backup' snapshot failure]",
      severity : "1",
      condition : {
        script : {
          source : "ctx.results[0].hits.total.value > 0",
          lang : "painless"
        }
      },
      actions : [
        {
          name : "Email",
          destination_id : "mail-to-team",
          message_template : {
            source : "The creation of snapshot 'daily_backup' failed.",
          },
          throttle_enabled : true,
          throttle : {
            value : 30,
            unit : "MINUTES"
          }
          subject_template : {
            source : "[SNAPSHOT-FAILURE]",
          }
        }
      ]
    }
  ]
}```

Thanks for your answer
Best,