RUM-8448 Add ios.benchmark.bytes_uploaded

Author: maxep

DatadogCore/Sources/Core/Upload/DataUploader.swift

@@ -26,10 +26,17 @@ internal final class DataUploader: DataUploaderType {
 
     private let httpClient: HTTPClient
     private let requestBuilder: FeatureRequestBuilder
+    /// Name of the feature this worker is performing uploads for.
+    private let featureName: String
 
-    init(httpClient: HTTPClient, requestBuilder: FeatureRequestBuilder) {
+    init(
+        httpClient: HTTPClient,
+        requestBuilder: FeatureRequestBuilder,
+        featureName: String
+    ) {
         self.httpClient = httpClient
         self.requestBuilder = requestBuilder
+        self.featureName = featureName
     }
 
     /// Uploads data synchronously (will block current thread) and returns the upload status.
@@ -71,6 +78,11 @@ internal final class DataUploader: DataUploaderType {
 
         _ = semaphore.wait(timeout: .distantFuture)
 
+#if DD_BENCHMARK
+        bench.meter.counter(metric: "ios.benchmark.bytes_uploaded")
+            .increment(by: request.httpBody?.count ?? 0, attributes: ["track": featureName])
+#endif
+
         return uploadStatus ?? DataUploader.unreachableUploadStatus
     }
 }

DatadogCore/Sources/Core/Upload/FeatureUpload.swift

@@ -30,7 +30,8 @@ internal struct FeatureUpload {
 
         let dataUploader = DataUploader(
             httpClient: httpClient,
-            requestBuilder: requestBuilder
+            requestBuilder: requestBuilder,
+            featureName: featureName
         )
 
         #if canImport(UIKit)

DatadogCore/Tests/Datadog/Core/Upload/DataUploadWorkerTests.swift

@@ -765,7 +765,8 @@ class DataUploadWorkerTests: XCTestCase {
 
         let dataUploader = DataUploader(
             httpClient: httpClient,
-            requestBuilder: FeatureRequestBuilderMock()
+            requestBuilder: FeatureRequestBuilderMock(),
+            featureName: .mockRandom()
         )
         let worker = DataUploadWorker(
             queue: uploaderQueue,

DatadogCore/Tests/Datadog/Core/Upload/DataUploaderTests.swift

@@ -21,7 +21,8 @@ class DataUploaderTests: XCTestCase {
 
         let uploader = DataUploader(
             httpClient: HTTPClientMock(response: randomResponse),
-            requestBuilder: FeatureRequestBuilderMock(request: randomRequest)
+            requestBuilder: FeatureRequestBuilderMock(request: randomRequest),
+            featureName: .mockRandom()
         )
 
         // When
@@ -50,7 +51,8 @@ class DataUploaderTests: XCTestCase {
 
         let uploader = DataUploader(
             httpClient: HTTPClientMock(error: randomError),
-            requestBuilder: FeatureRequestBuilderMock(request: randomRequest)
+            requestBuilder: FeatureRequestBuilderMock(request: randomRequest),
+            featureName: .mockRandom()
         )
 
         // When
@@ -72,7 +74,8 @@ class DataUploaderTests: XCTestCase {
 
         let uploader = DataUploader(
             httpClient: HTTPClientMock(),
-            requestBuilder: FailingRequestBuilderMock(error: error)
+            requestBuilder: FailingRequestBuilderMock(error: error),
+            featureName: .mockRandom()
         )
 
         // When & Then