feat: support wasm-assemblyscript sdk (#1175)

plugins/wasm-assemblyscript/assembly/request_wrapper.ts

@@ -0,0 +1,65 @@
+import {
+  stream_context,
+  log,
+  LogLevelValues
+} from "@higress/proxy-wasm-assemblyscript-sdk/assembly";
+
+export function getRequestScheme(): string {
+  let scheme: string  = stream_context.headers.request.get(":scheme");
+  if (scheme == "") {
+    log(LogLevelValues.error, "Parse request scheme failed");
+  }
+  return scheme;
+}
+
+export function getRequestHost(): string {
+  let host: string = stream_context.headers.request.get(":authority");
+  if (host == "") {
+    log(LogLevelValues.error, "Parse request host failed");
+  }
+  return host;
+}
+
+export function getRequestPath(): string {
+  let path: string = stream_context.headers.request.get(":path");
+  if (path == "") {
+    log(LogLevelValues.error, "Parse request path failed");
+  }
+  return path;
+}
+
+export function getRequestMethod(): string {
+  let method: string = stream_context.headers.request.get(":method");
+  if (method == "") {
+    log(LogLevelValues.error, "Parse request method failed");
+  }
+  return method;
+}
+
+export function isBinaryRequestBody(): boolean {
+  let contentType: string = stream_context.headers.request.get("content-type");
+  if (contentType != "" && (contentType.includes("octet-stream") || contentType.includes("grpc"))) {
+    return true;
+  }
+
+  let encoding: string = stream_context.headers.request.get("content-encoding");
+  if (encoding != "") {
+    return true;
+  }
+
+  return false;
+}
+
+export function isBinaryResponseBody(): boolean {
+  let contentType: string = stream_context.headers.response.get("content-type");
+  if (contentType != "" && (contentType.includes("octet-stream") || contentType.includes("grpc"))) {
+    return true;
+  }
+
+  let encoding: string = stream_context.headers.response.get("content-encoding");
+  if (encoding != "") {
+    return true;
+  }
+
+  return false;
+}