feat: Add request and response transformer wasm plugin (#549)

test/e2e/conformance/tests/go-wasm-transformer.yaml

@@ -0,0 +1,155 @@
+# Copyright (c) 2022 Alibaba Group Holding Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  annotations:
+  name: wasmplugin-transform-request
+  namespace: higress-conformance-infra
+spec:
+  ingressClassName: higress
+  rules:
+    - host: "foo1.com"
+      http:
+        paths:
+          - pathType: Prefix
+            path: "/"
+            backend:
+              service:
+                name: infra-backend-v1
+                port:
+                  number: 8080
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  annotations:
+  name: wasmplugin-transform-response
+  namespace: higress-conformance-infra
+spec:
+  ingressClassName: higress
+  rules:
+    - host: "foo2.com"
+      http:
+        paths:
+          - pathType: Prefix
+            path: "/"
+            backend:
+              service:
+                name: infra-backend-v1
+                port:
+                  number: 8080
+---
+apiVersion: extensions.higress.io/v1alpha1
+kind: WasmPlugin
+metadata:
+  name: transformer
+  namespace: higress-system
+spec:
+  matchRules:
+    # request transformer
+    - ingress:
+        - higress-conformance-infra/wasmplugin-transform-request
+      configDisable: false
+      config:
+          type: request
+          rules:
+            - operate: remove
+              headers:
+                - key: X-remove
+              querys:
+                - key: k1
+            - operate: rename
+              headers:
+                - key: X-not-renamed
+                  value: X-renamed
+              querys:
+                - key: k2
+                  value: k2-new
+            - operate: replace
+              headers:
+                - key: X-replace
+                  value: replaced
+              querys:
+                - key: k2-new
+                  value: v2-new
+            - operate: add
+              headers:
+                - key: X-add-append
+                  value: add
+              querys:
+                - key: k3
+                  value: v31
+            - operate: append
+              headers:
+                - key: X-add-append
+                  value: append
+              querys:
+                - key: k3
+                  value: v32
+            - operate: map
+              headers:
+                - key: X-add-append
+                  value: X-map
+              querys:
+                - key: k3
+                  value: k4
+            - operate: dedupe
+              headers:
+                - key: X-dedupe-first
+                  value: RETAIN_FIRST
+                - key: X-dedupe-last
+                  value: RETAIN_LAST
+                - key: X-dedupe-unique
+                  value: RETAIN_UNIQUE
+              querys:
+                - key: k4
+                  value: RETAIN_FIRST
+
+    # response transformer
+    - ingress:
+        - higress-conformance-infra/wasmplugin-transform-response
+      configDisable: false
+      config:
+        type: response
+        rules:
+          - operate: remove
+            headers:
+              - key: X-remove
+          - operate: rename
+            headers:
+              - key: X-not-renamed
+                value: X-renamed
+          - operate: replace
+            headers:
+              - key: X-replace
+                value: replace-$1
+                path_pattern: ^.*?\/(\w+)[\?]{0,1}.*$
+          - operate: add
+            headers:
+              - key: X-add-append
+                value: add-$1
+                host_pattern: ^(.*)\.com$
+          - operate: append
+            headers:
+              - key: X-add-append
+                value: append-$1
+                path_pattern: ^\/get\/(.*)\.html$
+          - operate: map
+            headers:
+              - key: X-add-append
+                value: X-map
+
+  url: file:///opt/plugins/wasm-go/extensions/transformer/plugin.wasm