# Creates a component template for mappings
PUT _component_template/my-mappings
{
  "template": {
    "mappings": {
      "properties": {
        "@timestamp": {
          "type": "date",
          "format": "date_optional_time||epoch_millis"
        },
        "message": {
          "type": "wildcard"
        }
      }
    }
  },
  "_meta": {
    "description": "Mappings for @timestamp and message fields",
    "my-custom-meta-field": "More arbitrary metadata"
  }
}
# Creates a component template for index settings
PUT _component_template/my-settings
{
  "template": {
    "settings": {
      "index.lifecycle.name": "my-lifecycle-policy"
    }
  },
  "_meta": {
    "description": "Settings for ILM",
    "my-custom-meta-field": "More arbitrary metadata"
  }
}

PUT _index_template/my-index-template
{
  "index_patterns": ["my-data-stream*"],
  "data_stream": { },
  "composed_of": [ "my-mappings", "my-settings" ],
  "priority": 500,
  "_meta": {
    "description": "Template for my time series data",
    "my-custom-meta-field": "More arbitrary metadata"
  }
}

PUT /_data_stream/my-data-stream-1/

GET /_data_stream/my-data-stream-1
{
    "data_streams": [
        {
            "name": "my-data-stream-1",
            "timestamp_field": {
                "name": "@timestamp"
            },
            "indices": [
                {
                    "index_name": ".ds-my-data-stream-1-2023.08.06-000001",
                    "index_uuid": "ByCb4bPGSEOXfVf3Txpiiw"
                }
            ],
            "generation": 1,
            "_meta": {
                "my-custom-meta-field": "More arbitrary metadata",
                "description": "Template for my time series data"
            },
            "status": "YELLOW",
            "template": "my-data-stream",
            "ilm_policy": "my-lifecycle-policy",
            "hidden": false,
            "system": false,
            "allow_custom_routing": false,
            "replicated": false
        }
    ]
}

POST my-data-stream-1/_doc
{
  "@timestamp": "2099-05-06T16:21:15.000Z",
  "message": "192.0.2.42 - - [06/May/2099:16:21:15 +0000] \"GET /images/bg.jpg HTTP/1.0\" 200 24736"
}

{
    "_index": ".ds-my-data-stream-1-2023.08.06-000001",
    "_id": "bHTfyIkBwVE4kI2xm5nL",
    "_version": 1,
    "result": "created",
    "_shards": {
        "total": 2,
        "successful": 1,
        "failed": 0
    },
    "_seq_no": 0,
    "_primary_term": 1
}

POST my-data-stream-1/_search
{ "query": { "match_all": {} } }