feat: Write the original host header before changed by Wasm plugin into access log (alibaba#920)

Author: CH3CHO

helm/core/templates/configmap.yaml

@@ -5,7 +5,7 @@
     accessLogEncoding: TEXT
     accessLogFile: "/dev/stdout"
     ingressControllerMode: "OFF"
-    accessLogFormat: '{"authority":"%REQ(:AUTHORITY)%","bytes_received":"%BYTES_RECEIVED%","bytes_sent":"%BYTES_SENT%","downstream_local_address":"%DOWNSTREAM_LOCAL_ADDRESS%","downstream_remote_address":"%DOWNSTREAM_REMOTE_ADDRESS%","duration":"%DURATION%","istio_policy_status":"%DYNAMIC_METADATA(istio.mixer:status)%","method":"%REQ(:METHOD)%","path":"%REQ(X-ENVOY-ORIGINAL-PATH?:PATH)%","protocol":"%PROTOCOL%","request_id":"%REQ(X-REQUEST-ID)%","requested_server_name":"%REQUESTED_SERVER_NAME%","response_code":"%RESPONSE_CODE%","response_flags":"%RESPONSE_FLAGS%","route_name":"%ROUTE_NAME%","start_time":"%START_TIME%","trace_id":"%REQ(X-B3-TRACEID)%","upstream_cluster":"%UPSTREAM_CLUSTER%","upstream_host":"%UPSTREAM_HOST%","upstream_local_address":"%UPSTREAM_LOCAL_ADDRESS%","upstream_service_time":"%RESP(X-ENVOY-UPSTREAM-SERVICE-TIME)%","upstream_transport_failure_reason":"%UPSTREAM_TRANSPORT_FAILURE_REASON%","user_agent":"%REQ(USER-AGENT)%","x_forwarded_for":"%REQ(X-FORWARDED-FOR)%"}
+    accessLogFormat: '{"authority":"%REQ(X-ENVOY-ORIGINAL-HOST?:AUTHORITY)%","bytes_received":"%BYTES_RECEIVED%","bytes_sent":"%BYTES_SENT%","downstream_local_address":"%DOWNSTREAM_LOCAL_ADDRESS%","downstream_remote_address":"%DOWNSTREAM_REMOTE_ADDRESS%","duration":"%DURATION%","istio_policy_status":"%DYNAMIC_METADATA(istio.mixer:status)%","method":"%REQ(:METHOD)%","path":"%REQ(X-ENVOY-ORIGINAL-PATH?:PATH)%","protocol":"%PROTOCOL%","request_id":"%REQ(X-REQUEST-ID)%","requested_server_name":"%REQUESTED_SERVER_NAME%","response_code":"%RESPONSE_CODE%","response_flags":"%RESPONSE_FLAGS%","route_name":"%ROUTE_NAME%","start_time":"%START_TIME%","trace_id":"%REQ(X-B3-TRACEID)%","upstream_cluster":"%UPSTREAM_CLUSTER%","upstream_host":"%UPSTREAM_HOST%","upstream_local_address":"%UPSTREAM_LOCAL_ADDRESS%","upstream_service_time":"%RESP(X-ENVOY-UPSTREAM-SERVICE-TIME)%","upstream_transport_failure_reason":"%UPSTREAM_TRANSPORT_FAILURE_REASON%","user_agent":"%REQ(USER-AGENT)%","x_forwarded_for":"%REQ(X-FORWARDED-FOR)%"}
 
     '
     dnsRefreshRate: 200s

pkg/cmd/hgctl/plugin/test/templates.go

@@ -75,9 +75,15 @@ static_resources:
                 stat_prefix: ingress_http
                 # Output envoy logs to stdout
                 access_log:
-                  - name: envoy.access_loggers.stdout
+                  - name: envoy.access_loggers.file
+                    filter:
+                      not_health_check_filter: {}
                     typed_config:
-                      "@type": type.googleapis.com/envoy.extensions.access_loggers.stream.v3.StdoutAccessLog
+                      "@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
+                      path: /dev/stdout
+                      log_format:
+                        text_format_source:
+                          inline_string: "{\"authority\":\"%REQ(X-ENVOY-ORIGINAL-HOST?:AUTHORITY)%\",\"bytes_received\":\"%BYTES_RECEIVED%\",\"bytes_sent\":\"%BYTES_SENT%\",\"downstream_local_address\":\"%DOWNSTREAM_LOCAL_ADDRESS%\",\"downstream_remote_address\":\"%DOWNSTREAM_REMOTE_ADDRESS%\",\"duration\":\"%DURATION%\",\"istio_policy_status\":\"%DYNAMIC_METADATA(istio.mixer:status)%\",\"method\":\"%REQ(:METHOD)%\",\"path\":\"%REQ(X-ENVOY-ORIGINAL-PATH?:PATH)%\",\"protocol\":\"%PROTOCOL%\",\"request_id\":\"%REQ(X-REQUEST-ID)%\",\"requested_server_name\":\"%REQUESTED_SERVER_NAME%\",\"response_code\":\"%RESPONSE_CODE%\",\"response_flags\":\"%RESPONSE_FLAGS%\",\"route_name\":\"%ROUTE_NAME%\",\"start_time\":\"%START_TIME%\",\"trace_id\":\"%REQ(X-B3-TRACEID)%\",\"upstream_cluster\":\"%UPSTREAM_CLUSTER%\",\"upstream_host\":\"%UPSTREAM_HOST%\",\"upstream_local_address\":\"%UPSTREAM_LOCAL_ADDRESS%\",\"upstream_service_time\":\"%RESP(X-ENVOY-UPSTREAM-SERVICE-TIME)%\",\"upstream_transport_failure_reason\":\"%UPSTREAM_TRANSPORT_FAILURE_REASON%\",\"user_agent\":\"%REQ(USER-AGENT)%\",\"x_forwarded_for\":\"%REQ(X-FORWARDED-FOR)%\"}\n"
                 # Modify as required
                 route_config:
                   name: local_route