Plugin cors (#349)

plugins/wasm-go/extensions/cors/envoy.yaml

@@ -0,0 +1,78 @@
+static_resources:
+  listeners:
+    - name: main
+      address:
+        socket_address:
+          address: 0.0.0.0
+          port_value: 18000
+      filter_chains:
+        - filters:
+            - name: envoy.http_connection_manager
+              typed_config:
+                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
+                stat_prefix: ingress_http
+                codec_type: auto
+                route_config:
+                  name: local_route
+                  virtual_hosts:
+                    - name: local_service
+                      domains:
+                        - "httpbin.example.com"
+                      routes:
+                        - match:
+                            prefix: "/"
+                          route:
+                            cluster: httpbin
+                http_filters:
+                  - name: envoy.filters.http.wasm
+                    typed_config:
+                      "@type": type.googleapis.com/udpa.type.v1.TypedStruct
+                      type_url: type.googleapis.com/envoy.extensions.filters.http.wasm.v3.Wasm
+                      value:
+                        config:
+                          configuration:
+                            "@type": type.googleapis.com/google.protobuf.StringValue
+                            value: |-
+                              {
+                                "allow_origins": ["http://httpbin.example.net"],
+                                "allow_origin_patterns": ["http://*.example.com:[*]", "http://*.example.org:[9090,8080]"],
+                                "allow_methods": ["GET","PUT","POST", "PATCH", "HEAD", "OPTIONS"],
+                                "allow_credentials": true,
+                                "allow_headers":["Content-Type", "Token","Authorization"],
+                                "expose_headers":["X-Custom-Header"],
+                                "max_age": 3600
+                              }
+                          vm_config:
+                            runtime: "envoy.wasm.runtime.v8"
+                            code:
+                              local:
+                                filename: "./main.wasm"
+                  - name: envoy.filters.http.router
+                    typed_config:
+                      "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
+
+
+  clusters:
+    - name: httpbin
+      connect_timeout: 0.5s
+      type: STRICT_DNS
+      lb_policy: ROUND_ROBIN
+      dns_refresh_rate: 5s
+      dns_lookup_family: V4_ONLY
+      load_assignment:
+        cluster_name: httpbin
+        endpoints:
+          - lb_endpoints:
+              - endpoint:
+                  address:
+                    socket_address:
+                      address: httpbin.org
+                      port_value: 80
+
+
+admin:
+  access_log_path: "/dev/null"
+  address:
+    socket_address:
+      address: 0.0.0.0
+      port_value: 8001