Add path mdc filter.

docs/features/http_mdc_path.md

@@ -0,0 +1,25 @@
+# Add HTTP path parts to MDC
+
+## Properties
+
+Property | Description | Default
+-------- | ----------- | -------
+`logger.http.path.enabled` | filter enabled? | `true`
+`logger.http.path.path` | filter path | `/**`
+`logger.http.path.order` | order for [Ordered](https://github.com/micronaut-projects/micronaut-core/blob/v3.2.0/core/src/main/java/io/micronaut/core/order/Ordered.java) | [ServerFilterPhase.FIRST.before()](https://github.com/micronaut-projects/micronaut-core/blob/v3.2.0/http/src/main/java/io/micronaut/http/filter/ServerFilterPhase.java#L34)
+`logger.http.path.prefix` | prefix to MDC key | ``
+`logger.http.path.patterns` | patterns with groups to add to MDC | `[]`
+
+## Examples
+
+Configuration for adding ids:
+
+```yaml
+logger:
+  http:
+    path:
+      prefix: path.
+      patterns:
+        - \/gateway\/(?<gatewayId>[a-f0-9\-]{36})
+        - \/gateway\/(?<gatewayId>[a-f0-9\-]{36})\/configuration\/(?<config>[a-z]+)
+```