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count

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`count`

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client.count([params, [callback]])

Get the number of documents for the cluster, index, type, or a query.

Check the API Conventions and the elasticsearch docs for more information pertaining to this method.

Get the number of all documents in the cluster.

const { count } = await client.count();

Get the number of documents in an index.

const { count } = await client.count({
  index: 'index_name'
});

Get the number of documents matching a query.

const { count } = await client.count({
  index: 'index_name',
  body: {
    query: {
      filtered: {
        filter: {
          terms: {
            foo: ['bar']
          }
        }
      }
    }
  }
});

Params

`ignoreUnavailable`	`Boolean` — Whether specified concrete indices should be ignored when unavailable (missing or closed)
`allowNoIndices`	`Boolean` — Whether to ignore if a wildcard indices expression resolves into no concrete indices. (This includes `_all` string or when no indices have been specified)
`[expandWildcards=open]`	`String` — Whether to expand wildcard expression to concrete indices that are open, closed or both. Options `"open"` `"closed"` `"none"` `"all"`
`minScore`	`Number` — Include only documents with a specific `_score` value in the result
`preference`	`String` — Specify the node or shard the operation should be performed on (default: random)
`routing`	`String`, `String[]`, `Boolean` — A comma-separated list of specific routing values
`q`	`String` — Query in the Lucene query string syntax
`analyzer`	`String` — The analyzer to use for the query string
`analyzeWildcard`	`Boolean` — Specify whether wildcard and prefix queries should be analyzed (default: false)
`[defaultOperator=OR]`	`String` — The default operator for query string query (AND or OR) Options `"AND"` `"OR"`
`df`	`String` — The field to use as default where no field prefix is given in the query string
`lenient`	`Boolean` — Specify whether format-based query failures (such as providing text to a numeric field) should be ignored
`terminateAfter`	`Number` — The maximum count for each shard, upon reaching which the query execution will terminate early
`index`	`String`, `String[]`, `Boolean` — A comma-separated list of indices to restrict the results
`type`	`String`, `String[]`, `Boolean` — A comma-separated list of types to restrict the results
`body`	`Object`, `JSON` — An optional request body, as either JSON or a JSON serializable object. See the elasticsearch docs for details about what can be specified here.

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