filters as processors

Signed-off-by: Nico Monchy <[email protected]>

Author: n-my

pipeline/processors/README.md

@@ -19,6 +19,7 @@ Fluent Bit offers the following processors:
 - [OpenTelemetry Envelope](opentelemetry-envelope.md): Transform logs into an
   OpenTelemetry-compatible format.
 - [SQL](sql.md): Use SQL queries to extract log content.
+- [Filters](filters.md): Any filter can be used as a processor.
 
 ## Features
 

pipeline/processors/filters.md

@@ -0,0 +1,28 @@
+# Filters
+
+Any Fluent Bit [filters](../../filters/README.md) can be used as a processor.
+
+## grep example
+
+In this example the grep filter is used as an output processor to send Log records only if they match a regular expression.
+
+{% tabs %}
+{% tab title="fluent-bit.yaml" %}
+
+```yaml
+pipeline:
+  inputs:
+    - name: tail
+      path: lines.txt
+      parser: json
+  outputs:
+    - name: stdout
+      match: '*'
+      processors:
+        logs:
+          - name: grep
+            regex: log aa
+```
+
+{% endtab %}
+{% endtabs %}