Protobuf operations improved to enable full and partial schema support

src/core/operations/ProtobufEncode.mjs

@@ -0,0 +1,54 @@
+/**
+ * @author GCHQ Contributor [3]
+ * @copyright Crown Copyright 2021
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+import Protobuf from "../lib/Protobuf.mjs";
+
+/**
+ * Protobuf Encode operation
+ */
+class ProtobufEncode extends Operation {
+
+    /**
+     * ProtobufEncode constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Protobuf Encode";
+        this.module = "Protobuf";
+        this.description = "Encodes a valid JSON object into a protobuf byte array using the input .proto schema.";
+        this.infoURL = "https://developers.google.com/protocol-buffers/docs/encoding";
+        this.inputType = "JSON";
+        this.outputType = "ArrayBuffer";
+        this.args = [
+            {
+                name: "Schema (.proto text)",
+                type: "text",
+                value: "",
+                rows: 8,
+                hint: "Drag and drop is enabled on this ingredient"
+            }
+        ];
+    }
+
+    /**
+     * @param {Object} input
+     * @param {Object[]} args
+     * @returns {ArrayBuffer}
+     */
+    run(input, args) {
+        try {
+            return Protobuf.encode(input, args);
+        } catch (error) {
+            throw new OperationError(error);
+        }
+    }
+
+}
+
+export default ProtobufEncode;