Network plugin - Support formatting network request (#5652)

Summary:
The network plugin allows for formatting network responses, making it possible to convert protobuf messages into a human-readable format. However, there is currently no method to format network request bodies. This PR introduces a NetworkRequestFormatter to address this issue.

## Changelog

Network plugin: Support formatting request body

Pull Request resolved: #5652

Test Plan:
Here we intercepted the network call and modified the request and response bodies

<img width="1280" alt="Screenshot 2024-07-11 at 23 13 58" src="https://github.com/user-attachments/assets/5bd20884-0ffc-48cf-867e-c74c4b6735df">

Reviewed By: antonk52

Differential Revision: D59750064

Pulled By: passy

fbshipit-source-id: 787227184d5609e9fdb3f07962b7cff0e972726f

android/plugins/network/src/main/java/com/facebook/flipper/plugins/network/NetworkFlipperPlugin.java

@@ -19,14 +19,23 @@
 public class NetworkFlipperPlugin extends BufferingFlipperPlugin implements NetworkReporter {
   public static final String ID = "Network";
   private static final int MAX_BODY_SIZE_IN_BYTES = 1024 * 1024;
+
   private List<NetworkResponseFormatter> mFormatters;
+  private final List<NetworkRequestFormatter> mRequestFormatters;
 
   public NetworkFlipperPlugin() {
     this(null);
   }
 
   public NetworkFlipperPlugin(List<NetworkResponseFormatter> formatters) {
     this.mFormatters = formatters;
+    this.mRequestFormatters = null;
+  }
+
+  public NetworkFlipperPlugin(
+      List<NetworkResponseFormatter> formatters, List<NetworkRequestFormatter> requestFormatters) {
+    this.mFormatters = formatters;
+    this.mRequestFormatters = requestFormatters;
   }
 
   @Override
@@ -40,7 +49,8 @@ public void setFormatters(List<NetworkResponseFormatter> formatters) {
 
   @Override
   public void reportRequest(final RequestInfo requestInfo) {
-    (new ErrorReportingRunnable(getConnection()) {
+    final Runnable job =
+        new ErrorReportingRunnable(getConnection()) {
           @Override
           protected void runOrThrow() throws Exception {
             final FlipperObject request =
@@ -55,8 +65,26 @@ protected void runOrThrow() throws Exception {
 
             send("newRequest", request);
           }
-        })
-        .run();
+        };
+
+    if (mRequestFormatters != null) {
+      for (NetworkRequestFormatter formatter : mRequestFormatters) {
+        if (formatter.shouldFormat(requestInfo)) {
+          formatter.format(
+              requestInfo,
+              new NetworkRequestFormatter.OnCompletionListener() {
+                @Override
+                public void onCompletion(final String json) {
+                  requestInfo.body = json.getBytes();
+                  job.run();
+                }
+              });
+          return;
+        }
+      }
+    }
+
+    job.run();
   }
 
   @Override

android/plugins/network/src/main/java/com/facebook/flipper/plugins/network/NetworkRequestFormatter.java

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.flipper.plugins.network;
+
+public interface NetworkRequestFormatter {
+  interface OnCompletionListener {
+    void onCompletion(String json);
+  }
+
+  boolean shouldFormat(NetworkReporter.RequestInfo request);
+
+  void format(NetworkReporter.RequestInfo request, OnCompletionListener onCompletionListener);
+}