lqb
/
elasticsearch
oglindă de https://gitee.com/mirrors/elasticsearch.git


			
				
					
						
						
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							[[multi-search-template]]
=== Multi search template API
++++
<titleabbrev>Multi search template</titleabbrev>
++++

Runs multiple <<run-multiple-templated-searches,templated searches>> with a single
request.

////
[source,console]
----
PUT _scripts/my-search-template
{
  "script": {
    "lang": "mustache",
    "source": {
      "query": {
        "match": {
          "message": "{{query_string}}"
        }
      },
      "from": "{{from}}",
      "size": "{{size}}"
    },
    "params": {
      "query_string": "My query string"
    }
  }
}

PUT my-index/_doc/1?refresh
{
  "message": "hello world"
}
----
// TESTSETUP
////

[source,console]
----
GET my-index/_msearch/template
{ }
{ "id": "my-search-template", "params": { "query_string": "hello world", "from": 0, "size": 10 }}
{ }
{ "id": "my-other-search-template", "params": { "query_type": "match_all" }}
----
// TEST[s/my-other-search-template/my-search-template/]

[[multi-search-template-api-request]]
==== {api-request-title}

`GET <target>/_msearch/template`

`GET _msearch/template`

`POST <target>/_msearch/template`

`POST _msearch/template`

[[multi-search-template-api-prereqs]]
==== {api-prereq-title}

* If the {es} {security-features} are enabled, you must have the `read`
<<privileges-list-indices,index privilege>> for the target data stream, index,
or alias. For cross-cluster search, see <<cross-cluster-configuring>>.

[[multi-search-template-api-path-params]]
==== {api-path-parms-title}

`<target>`::
(Optional, string) Comma-separated list of data streams, indices, and aliases to
search. Supports wildcards (`*`). To search all data streams and indices, omit
this parameter or use `*`.

[[multi-search-template-api-query-params]]
==== {api-query-parms-title}

`ccs_minimize_roundtrips`::
(Optional, Boolean) If `true`, network round-trips are minimized for
cross-cluster search requests. Defaults to `true`.

`max_concurrent_searches`::
(Optional, integer) Maximum number of concurrent searches the API can run.
Defaults to +max(1, (# of <<data-node,data nodes>> *
min(<<search-threadpool,search thread pool size>>, 10)))+.

`rest_total_hits_as_int`::
(Optional, Boolean) If `true`, the response returns `hits.total` as an integer.
If false, it returns `hits.total` as an object. Defaults to `false`.

include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=search_type]

`typed_keys`::
(Optional, Boolean) If `true`, the response prefixes aggregation and suggester
names with their respective types. Defaults to `false`.

[role="child_attributes"]
[[multi-search-template-api-request-body]]
==== {api-request-body-title}

The request body must be newline-delimited JSON (NDJSON) in the following
format:

[source,js]
----
<header>\n
<body>\n
<header>\n
<body>\n
----
// NOTCONSOLE

Each `<header>` and `<body>` pair represents a search request.

The `<header>` supports the same parameters as the <<search-multi-search,multi
search API>>'s `<header>`. The `<body>` supports the same parameters as the
<<search-search-api-request-body,search template API>>'s request body.

include::multi-search.asciidoc[tag=header-params]

`<body>`::
(Request, object) Parameters for the search.
+
=====
include::search-template-api.asciidoc[tag=body-params]
=====

[[multi-search-template-api-response-codes]]
==== {api-response-codes-title}

The API returns a `400` status code only if the request itself fails. If one or
more searches in the request fail, the API returns a `200` status code with an
`error` object for each failed search in the response.

[[multi-search-template-api-response-body]]
==== {api-response-body-title}

`responses`::
(array of objects) Results for each search, returned in the order submitted.
Each object uses the same properties as the <<search-search,search API>>'s
response.
+
If a search fails, the response includes an `error` object containing an error
message.

[[multi-search-template-api-curl-requests]]
==== curl requests

If a providing text file or text input to `curl`, use the `--data-binary` flag
instead of `-d` to preserve newlines.

[source,sh]
----
$ cat requests
{ "index": "my-index" }
{ "id": "my-search-template", "params": { "query_string": "hello world", "from": 0, "size": 10 }}
{ "index": "my-other-index" }
{ "id": "my-other-search-template", "params": { "query_type": "match_all" }}

$ curl -H "Content-Type: application/x-ndjson" -XGET localhost:9200/_msearch/template --data-binary "@requests"; echo
----
// NOTCONSOLE