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Verify connection to Elasticsearch (#1487)

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This commit is contained in:
Tomas Della Vedova
2021-07-19 16:42:04 +02:00
committed by delvedor
parent 9df5e6f713
commit 12dfc31c8d
24 changed files with 1456 additions and 106 deletions
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13
docs/connecting.asciidoc
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@ -10,6 +10,7 @@ This page contains the information you need to connect and use the Client with
* <<client-usage, Using the client>>
* <<client-connect-proxy, Connecting through a proxy>>
* <<client-error-handling, Handling errors>>
* <<product-check, Automatic product check>>
[discrete]
[[authentication]]
@ -517,3 +518,15 @@ a|* `name` - `string`
* `statusCode` - `object`, the response headers
* `headers` - `object`, the response status code
|===
[discrete]
[[product-check]]
=== Automatic product check
Since v7.14.0, the client performs a required product check before the first call.
This pre-flight product check allows the client to establish the version of Elasticsearch
that it is communicating with. The product check requires one additional HTTP request to
be sent to the server as part of the request pipeline before the main API call is sent.
In most cases, this will succeed during the very first API call that the client sends.
Once the product check completes, no further product check HTTP requests are sent for
subsequent API calls.