Protobuf operations improved to enable full and partial schema support

src/core/operations/ProtobufDecode.mjs

@@ -20,12 +20,30 @@ class ProtobufDecode extends Operation {
         super();
 
         this.name = "Protobuf Decode";
-        this.module = "Default";
-        this.description = "Decodes any Protobuf encoded data to a JSON representation of the data using the field number as the field key.";
+        this.module = "Protobuf";
+        this.description = "Decodes any Protobuf encoded data to a JSON representation of the data using the field number as the field key.<br><br>If a .proto schema is defined, the encoded data will be decoded with reference to the schema. Only one message instance will be decoded. <br><br><u>Show Unknown Fields</u><br>When a schema is used, this option shows fields that are present in the input data but not defined in the schema.<br><br><u>Show Types</u><br>Show the type of a field next to its name. For undefined fields, the wiretype and example types are shown instead.";
         this.infoURL = "https://wikipedia.org/wiki/Protocol_Buffers";
         this.inputType = "ArrayBuffer";
         this.outputType = "JSON";
-        this.args = [];
+        this.args = [
+            {
+                name: "Schema (.proto text)",
+                type: "text",
+                value: "",
+                rows: 8,
+                hint: "Drag and drop is enabled on this ingredient"
+            },
+            {
+                name: "Show Unknown Fields",
+                type: "boolean",
+                value: false
+            },
+            {
+                name: "Show Types",
+                type: "boolean",
+                value: false
+            }
+        ];
     }
 
     /**
@@ -36,7 +54,7 @@ class ProtobufDecode extends Operation {
     run(input, args) {
         input = new Uint8Array(input);
         try {
-            return Protobuf.decode(input);
+            return Protobuf.decode(input, args);
         } catch (err) {
             throw new OperationError(err);
         }

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;