EnvoyFilter로 외부 프로세서와 통신하기

ExternalProcessor

References

• Envoy / Configuration / HTTP / Filter / External Processor
• Envoy / API / V3 / Extensions / Filters / HTTP / External Processor

spec:
  configPatches:
    - applyTo: HTTP_FILTER
      match:
        listener:
          filterChain:
            filter:
              name: "envoy.filters.network.http_connection_manager"
      patch:
        operation: INSERT_FIRST
        value:
          name: envoy.filters.http.ext_proc
          typed_config:
            "@type": type.googleapis.com/envoy.extensions.filters.http.ext_proc.v3.ExternalProcessor
            grpc_service:
              envoy_grpc:
                cluster_name: outbound|<port>||<name>.<namespace>.svc.cluster.local
            failure_mode_allow: false
            allow_mode_override: true
            processing_mode:
              request_body_mode: "FULL_DUPLEX_STREAMED"
              response_header_mode: "SKIP"

• grpc_service
• allow_mode_override: false
  • true로 설정하면 ProcessingResponse.mode_override에 따라 processing_mode를 변경할 수 있습니다.
• processing_mode
  • request_header_mode: SEND|SKIP
  • request_body_mode: NONE|STREAMED|BUFFERED|BUFFERED_PARTIAL|FULL_DUPLEX_STREAMED
  • request_trailer_mode: SKIP|SEND
  • response_header_mode: SEND|SKIP
  • response_body_mode: NONE|STREAMED|BUFFERED|BUFFERED_PARTIAL|FULL_DUPLEX_STREAMED
  • response_trailer_mode: SKIP|SEND