Elasticsearch-datastream (#152)

Signed-off-by: Zsolt Gyulai (zgyulai) <[email protected]>

Added new elasticsearch-datastream destination.

_data/external_links.yml

@@ -608,6 +608,11 @@ gh-es:
   url: https://github.com/syslog-ng/syslog-ng/tree/master/scl/elasticsearch
   title: [ "Elasticsearch configuration snippet on GitHub" ]
 
+gh-es-ds:
+  id: gh-es-ds
+  url: https://github.com/syslog-ng/syslog-ng/blob/master/scl/elasticsearch/elastic-datastream.conf
+  title: [ "Elasticsearch datastream configuration snippet on GitHub" ]
+
 gh-fortigate:
   id: gh-fortigate
   url: https://github.com/syslog-ng/syslog-ng/blob/master/scl/fortigate/fortigate.conf
@@ -796,6 +801,11 @@ ebpf:
   url: https://ebpf.io/
   title: [ "Extended Berkeley Packet Filter" ]
 
+elastic-ds:
+  id: elastic-ds
+  url: https://www.elastic.co/guide/en/elasticsearch/reference/current/data-streams.html
+  title: [ "Elasticsearch data streams" ]
+
 gcp-ser:
   id: gcp-ser
   url: https://cloud.google.com/iam/docs/service-account-overview

doc/_admin-guide/070_Destinations/035_elasticsearch-datastream/README.md

@@ -0,0 +1,31 @@
+---
+title: 'elasticsearch-datastream: Elasticsearch data streams'
+short_title: elasticsearch-datastream
+id: adm-dest-es-datastream
+description: >-
+    From {{ site.product.short_name }} 4.8 and later versions, you  can send messages and metrics to Elasticsearch data streams to store your log and metrics data as time series data.
+---
+
+**Declaration**
+
+```config
+destination d_elastic_data_stream {
+  elasticsearch-datastream(
+    url("https://elastic-endpoint:9200/my-data-stream/_bulk")
+    user("elastic")
+    password("ba253DOn434Tc0pY22OI")
+  );
+};
+```
+
+This driver is a reusable configuration snippet configured to send log messages using the http() driver using a template. You can find the Elasticsearch datastream configuration snippet on GitHub.
+
+## Prerequisites
+
+* An account for Elasticsearch datastreams with a username and a password.
+
+## Options
+
+Elasticsearch datastream is an HTTP based driver, hence it utilizes the HTTP destination options.
+
+> *Copyright © 2024 Axoflow*