api: add Untyped metadata support in ExtProc

api/v1alpha1/ext_proc_types.go

@@ -70,4 +70,16 @@ type ExtProc struct {
 	//
 	// +optional
 	ProcessingMode *ExtProcProcessingMode `json:"processingMode,omitempty"`
+
+	// MetadataOptions defines the metadata that should be forwarded to or received from the external processor.
+	//
+	// +optional
+	Metadata *MetadataOptions `json:"metadata,omitempty"`
+}
+
+type MetadataOptions struct {
+	// ForwardingNamespaces is a list of namespaces from which metadata should be forwarded to the external processor.
+	ForwardingNamespaces []string `json:"forwardingNamespaces,omitempty"`
+	// ReceivingNamespaces is a list of namespaces from which metadata should be received from the external processor.
+	ReceivingNamespaces []string `json:"receivingNamespaces,omitempty"`
 }

charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml

@@ -823,6 +823,25 @@ spec:
                         Default: 200ms
                       pattern: ^([0-9]{1,5}(h|m|s|ms)){1,4}$
                       type: string
+                    metadata:
+                      description: MetadataOptions defines the metadata that should
+                        be forwarded to or received from the external processor.
+                      properties:
+                        forwardingNamespaces:
+                          description: ForwardingNamespaces is a list of namespaces
+                            from which metadata should be forwarded to the external
+                            processor.
+                          items:
+                            type: string
+                          type: array
+                        receivingNamespaces:
+                          description: ReceivingNamespaces is a list of namespaces
+                            from which metadata should be received from the external
+                            processor.
+                          items:
+                            type: string
+                          type: array
+                      type: object
                     processingMode:
                       description: |-
                         ProcessingMode defines how request and response body is processed

site/content/en/latest/api/extension_types.md

@@ -1491,6 +1491,7 @@ _Appears in:_
 | `messageTimeout` | _[Duration](https://gateway-api.sigs.k8s.io/reference/spec/#gateway.networking.k8s.io/v1.Duration)_ |  false  | MessageTimeout is the timeout for a response to be returned from the external processor<br />Default: 200ms |
 | `failOpen` | _boolean_ |  false  | FailOpen defines if requests or responses that cannot be processed due to connectivity to the<br />external processor are terminated or passed-through.<br />Default: false |
 | `processingMode` | _[ExtProcProcessingMode](#extprocprocessingmode)_ |  false  | ProcessingMode defines how request and response body is processed<br />Default: header and body are not sent to the external processor |
+| `metadata` | _[MetadataOptions](#metadataoptions)_ |  false  | Refer to Kubernetes API documentation for fields of `metadata`. |
 
 
 #### ExtProcBodyProcessingMode
@@ -2450,6 +2451,21 @@ _Appears in:_
 
 
 
+#### MetadataOptions
+
+
+
+
+
+_Appears in:_
+- [ExtProc](#extproc)
+
+| Field | Type | Required | Description |
+| ---   | ---  | ---      | ---         |
+| `forwardingNamespaces` | _string array_ |  true  | ForwardingNamespaces is a list of namespaces from which metadata should be forwarded to the external processor. |
+| `receivingNamespaces` | _string array_ |  true  | ReceivingNamespaces is a list of namespaces from which metadata should be received from the external processor. |
+
+
 #### MetricSinkType
 
 _Underlying type:_ _string_

site/content/zh/latest/api/extension_types.md

@@ -1491,6 +1491,7 @@ _Appears in:_
 | `messageTimeout` | _[Duration](https://gateway-api.sigs.k8s.io/reference/spec/#gateway.networking.k8s.io/v1.Duration)_ |  false  | MessageTimeout is the timeout for a response to be returned from the external processor<br />Default: 200ms |
 | `failOpen` | _boolean_ |  false  | FailOpen defines if requests or responses that cannot be processed due to connectivity to the<br />external processor are terminated or passed-through.<br />Default: false |
 | `processingMode` | _[ExtProcProcessingMode](#extprocprocessingmode)_ |  false  | ProcessingMode defines how request and response body is processed<br />Default: header and body are not sent to the external processor |
+| `metadata` | _[MetadataOptions](#metadataoptions)_ |  false  | Refer to Kubernetes API documentation for fields of `metadata`. |
 
 
 #### ExtProcBodyProcessingMode
@@ -2450,6 +2451,21 @@ _Appears in:_
 
 
 
+#### MetadataOptions
+
+
+
+
+
+_Appears in:_
+- [ExtProc](#extproc)
+
+| Field | Type | Required | Description |
+| ---   | ---  | ---      | ---         |
+| `forwardingNamespaces` | _string array_ |  true  | ForwardingNamespaces is a list of namespaces from which metadata should be forwarded to the external processor. |
+| `receivingNamespaces` | _string array_ |  true  | ReceivingNamespaces is a list of namespaces from which metadata should be received from the external processor. |
+
+
 #### MetricSinkType
 
 _Underlying type:_ _string_