feat(metrics): Add implementation for metrics envelope item

CHANGELOG.md

@@ -4,7 +4,8 @@
 
 ### Features
 
-- Add integration to collect Metrics, can be enabled by setting `options.enableMetrics = true` (#6956)
+- Add integration to collect Metrics, can be enabled by setting `options.experimental.enableMetrics = true` (#6956)
+- Add implementation for Metrics Protocol with modification of items in `options.experimental.beforeSendMetrics` (#6960)
 
 ### Fixes
 

Samples/SentrySampleShared/SentrySampleShared/SentrySDKWrapper.swift

@@ -161,6 +161,19 @@ public struct SentrySDKWrapper {
 
         // Integration: Metrics
         options.experimental.enableMetrics = SentrySDKOverrides.Metrics.enable.boolValue
+        options.experimental.beforeSendMetric = { metric in
+            // Modify the metric in the callback
+            var modifiedMetric = metric
+
+            // Modify the value of the metric
+            if case .counter(let value) = modifiedMetric.value, modifiedMetric.name == "test.metric" {
+                modifiedMetric.value = .counter(value + 100)
+            }
+
+            // Add a custom attribute to the metric
+            modifiedMetric.attributes["custom-attribute"] = .init(string: "some-value")
+            return modifiedMetric
+        }
 
         // Experimental features
         options.enableFileManagerSwizzling = !SentrySDKOverrides.Other.disableFileManagerSwizzling.boolValue

Sentry.xcodeproj/project.pbxproj

@@ -779,7 +779,11 @@
 		D468C0622D3669A200964230 /* SentryFileIOTracker+SwiftHelpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = D468C0612D3669A200964230 /* SentryFileIOTracker+SwiftHelpers.swift */; };
 		D46B041D2EDF168400AF4A0A /* SentryMetricsIntegration.swift in Sources */ = {isa = PBXBuildFile; fileRef = D46B041C2EDF167D00AF4A0A /* SentryMetricsIntegration.swift */; };
 		D46B04202EDF175C00AF4A0A /* SentryMetricsIntegrationTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D46B041F2EDF175600AF4A0A /* SentryMetricsIntegrationTests.swift */; };
+		D46B04482EDF25E100AF4A0A /* SentryMetric.swift in Sources */ = {isa = PBXBuildFile; fileRef = D46B04472EDF25E100AF4A0A /* SentryMetric.swift */; };
+		D46B044F2EDF260A00AF4A0A /* SentryMetricsBatcher.swift in Sources */ = {isa = PBXBuildFile; fileRef = D46B044E2EDF260A00AF4A0A /* SentryMetricsBatcher.swift */; };
 		D473ACD72D8090FC000F1CC6 /* FileManager+SentryTracing.swift in Sources */ = {isa = PBXBuildFile; fileRef = D473ACD62D8090FC000F1CC6 /* FileManager+SentryTracing.swift */; };
+		D4749EF02EF042C1000F9AE7 /* SentryMetricTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4749EEF2EF042C1000F9AE7 /* SentryMetricTests.swift */; };
+		D4749F482EF062FD000F9AE7 /* SentryMetricsBatcherTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4749F472EF062FD000F9AE7 /* SentryMetricsBatcherTests.swift */; };
 		D480F9D92DE47A50009A0594 /* TestSentryScopePersistentStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = D480F9D82DE47A48009A0594 /* TestSentryScopePersistentStore.swift */; };
 		D480F9DB2DE47AF2009A0594 /* SentryScopePersistentStoreTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D480F9DA2DE47AEB009A0594 /* SentryScopePersistentStoreTests.swift */; };
 		D48225A12EEC4B6D00CDF32C /* BatcherMetadata.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48225A02EEC4B6D00CDF32C /* BatcherMetadata.swift */; };
@@ -789,6 +793,9 @@
 		D48891CC2E98F22A00212823 /* SentryInfoPlistWrapperProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48891C62E98F21D00212823 /* SentryInfoPlistWrapperProvider.swift */; };
 		D48891CE2E98F28E00212823 /* SentryInfoPlistWrapper.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48891CD2E98F28E00212823 /* SentryInfoPlistWrapper.swift */; };
 		D48891D02E98F2E700212823 /* SentryInfoPlistError.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48891CF2E98F2E600212823 /* SentryInfoPlistError.swift */; };
+		D48953FE2EF5756A0086F240 /* SentryMetricValue.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48953FD2EF5756A0086F240 /* SentryMetricValue.swift */; };
+		D48954052EF575960086F240 /* SentryMetricValueTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48954042EF575960086F240 /* SentryMetricValueTests.swift */; };
+		D48954072EF579360086F240 /* SentryEnvelopeItemTypesTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48954062EF579320086F240 /* SentryEnvelopeItemTypesTests.swift */; };
 		D48E8B8B2D3E79610032E35E /* SentryTraceOrigin.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48E8B8A2D3E79610032E35E /* SentryTraceOrigin.swift */; };
 		D48E8B9D2D3E82AC0032E35E /* SentrySpanOperation.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48E8B9C2D3E82AC0032E35E /* SentrySpanOperation.swift */; };
 		D490648A2DFAE1F600555785 /* SentryScreenshotOptions.swift in Sources */ = {isa = PBXBuildFile; fileRef = D49064892DFAE1F600555785 /* SentryScreenshotOptions.swift */; };
@@ -2151,9 +2158,13 @@
 		D468C0612D3669A200964230 /* SentryFileIOTracker+SwiftHelpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "SentryFileIOTracker+SwiftHelpers.swift"; sourceTree = "<group>"; };
 		D46B041C2EDF167D00AF4A0A /* SentryMetricsIntegration.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetricsIntegration.swift; sourceTree = "<group>"; };
 		D46B041F2EDF175600AF4A0A /* SentryMetricsIntegrationTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetricsIntegrationTests.swift; sourceTree = "<group>"; };
+		D46B04472EDF25E100AF4A0A /* SentryMetric.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetric.swift; sourceTree = "<group>"; };
+		D46B044E2EDF260A00AF4A0A /* SentryMetricsBatcher.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetricsBatcher.swift; sourceTree = "<group>"; };
 		D46D45E12D5F3FD600A1CB35 /* Sentry_Base.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; path = Sentry_Base.xctestplan; sourceTree = "<group>"; };
 		D46D45E92D5F411700A1CB35 /* SentrySwiftUI_Base.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; name = SentrySwiftUI_Base.xctestplan; path = Plans/SentrySwiftUI_Base.xctestplan; sourceTree = SOURCE_ROOT; };
 		D473ACD62D8090FC000F1CC6 /* FileManager+SentryTracing.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "FileManager+SentryTracing.swift"; sourceTree = "<group>"; };
+		D4749EEF2EF042C1000F9AE7 /* SentryMetricTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetricTests.swift; sourceTree = "<group>"; };
+		D4749F472EF062FD000F9AE7 /* SentryMetricsBatcherTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetricsBatcherTests.swift; sourceTree = "<group>"; };
 		D480F9D82DE47A48009A0594 /* TestSentryScopePersistentStore.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TestSentryScopePersistentStore.swift; sourceTree = "<group>"; };
 		D480F9DA2DE47AEB009A0594 /* SentryScopePersistentStoreTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryScopePersistentStoreTests.swift; sourceTree = "<group>"; };
 		D48225A02EEC4B6D00CDF32C /* BatcherMetadata.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BatcherMetadata.swift; sourceTree = "<group>"; };
@@ -2163,6 +2174,9 @@
 		D48891C62E98F21D00212823 /* SentryInfoPlistWrapperProvider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryInfoPlistWrapperProvider.swift; sourceTree = "<group>"; };
 		D48891CD2E98F28E00212823 /* SentryInfoPlistWrapper.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryInfoPlistWrapper.swift; sourceTree = "<group>"; };
 		D48891CF2E98F2E600212823 /* SentryInfoPlistError.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryInfoPlistError.swift; sourceTree = "<group>"; };
+		D48953FD2EF5756A0086F240 /* SentryMetricValue.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetricValue.swift; sourceTree = "<group>"; };
+		D48954042EF575960086F240 /* SentryMetricValueTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryMetricValueTests.swift; sourceTree = "<group>"; };
+		D48954062EF579320086F240 /* SentryEnvelopeItemTypesTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryEnvelopeItemTypesTests.swift; sourceTree = "<group>"; };
 		D48E8B8A2D3E79610032E35E /* SentryTraceOrigin.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryTraceOrigin.swift; sourceTree = "<group>"; };
 		D48E8B9C2D3E82AC0032E35E /* SentrySpanOperation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentrySpanOperation.swift; sourceTree = "<group>"; };
 		D49064892DFAE1F600555785 /* SentryScreenshotOptions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SentryScreenshotOptions.swift; sourceTree = "<group>"; };
@@ -3450,6 +3464,8 @@
 				7BFC16AC2524BCE700FF6266 /* SentryMessageTests.swift */,
 				7BFC16B82524D4AF00FF6266 /* SentryMessage+Equality.h */,
 				7BFC16B92524D4AF00FF6266 /* SentryMessage+Equality.m */,
+				D4749EEF2EF042C1000F9AE7 /* SentryMetricTests.swift */,
+				D48954042EF575960086F240 /* SentryMetricValueTests.swift */,
 				7BC6EC03255C235F0059822A /* SentryFrameTests.swift */,
 				7BC6EC07255C36DE0059822A /* SentryStacktraceTests.swift */,
 				7BC6EC0B255C3DF80059822A /* SentryThreadTests.swift */,
@@ -3623,6 +3639,7 @@
 				62F05D2A2C0DB1F100916E3F /* SentryLogTestHelper.m */,
 				7BBD18BA24530D2600427C76 /* SentryFileManagerTests.swift */,
 				FA21A2E92E60E9C700E7EADB /* EnvelopeComparison.swift */,
+				D48954062EF579320086F240 /* SentryEnvelopeItemTypesTests.swift */,
 				7BD4E8E727FD95900086C410 /* SentryMigrateSessionInitTests.m */,
 				631501BA1EE6F30B00512C5B /* SentrySwizzleTests.m */,
 				7B34721628086A9D0041F047 /* SentrySwizzleWrapperTests.swift */,
@@ -4402,6 +4419,7 @@
 		D46B04162EDF167800AF4A0A /* Metrics */ = {
 			isa = PBXGroup;
 			children = (
+				D46B044E2EDF260A00AF4A0A /* SentryMetricsBatcher.swift */,
 				D46B041C2EDF167D00AF4A0A /* SentryMetricsIntegration.swift */,
 			);
 			path = Metrics;
@@ -4410,6 +4428,7 @@
 		D46B041E2EDF173A00AF4A0A /* Metrics */ = {
 			isa = PBXGroup;
 			children = (
+				D4749F472EF062FD000F9AE7 /* SentryMetricsBatcherTests.swift */,
 				D46B041F2EDF175600AF4A0A /* SentryMetricsIntegrationTests.swift */,
 			);
 			path = Metrics;
@@ -4686,12 +4705,12 @@
 			isa = PBXGroup;
 			children = (
 				D4D7AA6D2EEAD89300E28DFB /* Batcher */,
-				F451FAA52E0B304E0050ACF2 /* LoadValidator.swift */,
 				FA94E68B2E6B92BE00576666 /* SentryClientReport.swift */,
-				FA01BCB12E69352A00968DFA /* SentryDiscardedEvent.swift */,
 				FAE57C072E83092A00B710F9 /* SentryDispatchFactory.swift */,
 				FA94E6B12E6D265500576666 /* SentryEnvelope.swift */,
 				FA3AEE772E68E2830092283E /* SentryEnvelopeHeader.swift */,
+				FA01BCB12E69352A00968DFA /* SentryDiscardedEvent.swift */,
+				F451FAA52E0B304E0050ACF2 /* LoadValidator.swift */,
 				FA34C1A22E692A5000BC52AA /* SentryEnvelopeItem.swift */,
 				92235CAB2E15369900865983 /* SentryLogBatcher.swift */,
 				92235CAD2E15549C00865983 /* SentryLogger.swift */,
@@ -4920,6 +4939,8 @@
 				92ECD73F2E05AD500063EC10 /* SentryAttribute.swift */,
 				92ECD73D2E05AD2B0063EC10 /* SentryLogLevel.swift */,
 				9264E1EA2E2E385B00B077CF /* SentryLogMessage.swift */,
+				D46B04472EDF25E100AF4A0A /* SentryMetric.swift */,
+				D48953FD2EF5756A0086F240 /* SentryMetricValue.swift */,
 				F458D1122E180BB00028273E /* SentryFileManagerProtocol.swift */,
 			);
 			path = Protocol;
@@ -5851,8 +5872,10 @@
 				D8ACE3C82762187200F5A213 /* SentryFileIOTrackerHelper.m in Sources */,
 				D8B088B729C9E3FF00213258 /* SentryTracerConfiguration.m in Sources */,
 				FA7206E12E0B37C80072FDD4 /* SentryProfileCollector.mm in Sources */,
+				D46B044F2EDF260A00AF4A0A /* SentryMetricsBatcher.swift in Sources */,
 				9264E1EB2E2E385E00B077CF /* SentryLogMessage.swift in Sources */,
 				8ECC674A25C23A20000E2BF6 /* SentryTransactionContext.m in Sources */,
+				D46B04482EDF25E100AF4A0A /* SentryMetric.swift in Sources */,
 				03BCC38C27E1C01A003232C7 /* SentryTime.mm in Sources */,
 				A8F17B342902870300990B25 /* SentryHttpStatusCodeRange.m in Sources */,
 				62C97D3A2CC64E6B00DDA204 /* SentryUncaughtNSExceptions.m in Sources */,
@@ -5861,6 +5884,7 @@
 				8453421628BE8A9500C22EEC /* SentrySpanStatus.m in Sources */,
 				6292585B2DAFA5F70049388F /* SentryCrashCxaThrowSwapper.c in Sources */,
 				FA8AFCEF2E843903007A0E18 /* SentryFileIOTracker.swift in Sources */,
+				D48953FE2EF5756A0086F240 /* SentryMetricValue.swift in Sources */,
 				F4FE86BD2EECAC31003D845F /* SentryScreenshotOptions.swift in Sources */,
 				F4FE86BE2EECAC31003D845F /* SentryScreenshotIntegration.swift in Sources */,
 				92D957732E05A44600E20E66 /* SentryAsyncLog.m in Sources */,
@@ -6255,6 +6279,7 @@
 				FAC62B652E15A4100003909D /* SentrySDKThreadTests.swift in Sources */,
 				D82915632C85EF0C00A6CDD4 /* SentryViewPhotographerTests.swift in Sources */,
 				D8DBE0CA2C0E093000FAB1FD /* SentryTouchTrackerTests.swift in Sources */,
+				D48954072EF579360086F240 /* SentryEnvelopeItemTypesTests.swift in Sources */,
 				D4AF7D2C2E9404ED004F0F59 /* SentryUIRedactBuilderTests+EdgeCases.swift in Sources */,
 				D8F67AF42BE10F9600C9197B /* SentryUIRedactBuilderTests.swift in Sources */,
 				92ECD7482E05B57C0063EC10 /* SentryAttributeTests.swift in Sources */,
@@ -6395,6 +6420,7 @@
 				F49D419A2DEA2FB000D9244E /* SentryCrashExceptionApplicationTests.swift in Sources */,
 				D88817DD26D72BA500BF2251 /* SentryTraceContextTests.swift in Sources */,
 				D4E3F35D2D4A864600F79E2B /* SentryNSDictionarySanitizeTests.swift in Sources */,
+				D48954052EF575960086F240 /* SentryMetricValueTests.swift in Sources */,
 				7B984A9F28E572AF001F4BEE /* CrashReport.swift in Sources */,
 				927D21FB2ED5DE8A00916D31 /* FlushLogsIntegrationTests.swift in Sources */,
 				D4AF00252D2E93C400F5F3D7 /* SentryNSFileManagerSwizzlingTests.m in Sources */,
@@ -6415,6 +6441,7 @@
 				63FE722520DA66EC00CDBAE8 /* SentryCrashFileUtils_Tests.m in Sources */,
 				D86130122BB563FD004C0F5E /* SentrySessionReplayIntegrationTests.swift in Sources */,
 				7BFC16BA2524D4AF00FF6266 /* SentryMessage+Equality.m in Sources */,
+				D4749EF02EF042C1000F9AE7 /* SentryMetricTests.swift in Sources */,
 				92136D672C9D7660002A9FB8 /* SentryNSURLRequestBuilderTests.swift in Sources */,
 				F48E2E0A2E6637840073CB22 /* TestSentryCrashWrapper.swift in Sources */,
 				D855B3E827D652AF00BCED76 /* SentryCoreDataTrackingIntegrationTest.swift in Sources */,
@@ -6428,6 +6455,7 @@
 				7B16FD022654F86B008177D3 /* SentrySysctlTests.swift in Sources */,
 				7BAF3DB5243C743E008A5414 /* SentryClientTests.swift in Sources */,
 				D8F67AF12BE0D33F00C9197B /* UIImageHelperTests.swift in Sources */,
+				D4749F482EF062FD000F9AE7 /* SentryMetricsBatcherTests.swift in Sources */,
 				8EAE8E5E2681768000D6958B /* URLSessionTaskMock.m in Sources */,
 				62CB191E2E77F8B500AF5DA2 /* SentryDispatchSourceWrapperTests.swift in Sources */,
 				D8CE69BC277E39C700C6EC5C /* SentryFileIOTrackingIntegrationObjCTests.m in Sources */,

SentryTestUtils/Sources/TestClient.swift

@@ -184,4 +184,10 @@ public class TestClient: SentryClientInternal {
     public override func captureLogs() {
         captureLogsInvocations.record(())
     }
+
+    public var captureMetricsDataInvocations = Invocations<(data: Data, count: NSNumber)>()
+    public override func captureMetricsData(_ data: Data, with itemCount: NSNumber) {
+        captureMetricsDataInvocations.record((data, itemCount))
+        super.captureMetricsData(data, with: itemCount)
+    }
 }

Sources/Sentry/SentryClient.m

@@ -1114,11 +1114,29 @@ - (void)captureLogs
 
 - (void)captureLogsData:(NSData *)data with:(NSNumber *)itemCount
 {
-    SentryEnvelopeItem *envelopeItem =
-        [[SentryEnvelopeItem alloc] initWithType:SentryEnvelopeItemTypes.log
-                                            data:data
-                                     contentType:@"application/vnd.sentry.items.log+json"
-                                       itemCount:itemCount];
+    [self captureData:data
+                 with:itemCount
+                 type:SentryEnvelopeItemTypes.log
+          contentType:@"application/vnd.sentry.items.log+json"];
+}
+
+- (void)captureMetricsData:(NSData *)data with:(NSNumber *)itemCount
+{
+    [self captureData:data
+                 with:itemCount
+                 type:SentryEnvelopeItemTypes.traceMetric
+          contentType:@"application/vnd.sentry.items.trace-metric+json"];
+}
+
+- (void)captureData:(NSData *)data
+               with:(NSNumber *)itemCount
+               type:(NSString *)type
+        contentType:(NSString *)contentType
+{
+    SentryEnvelopeItem *envelopeItem = [[SentryEnvelopeItem alloc] initWithType:type
+                                                                           data:data
+                                                                    contentType:contentType
+                                                                      itemCount:itemCount];
     SentryEnvelope *envelope = [[SentryEnvelope alloc] initWithHeader:[SentryEnvelopeHeader empty]
                                                            singleItem:envelopeItem];
     [self captureEnvelope:envelope];

Sources/Sentry/SentryDataCategoryMapper.m

@@ -18,6 +18,7 @@
 NSString *const kSentryDataCategoryNameSpan = @"span";
 NSString *const kSentryDataCategoryNameFeedback = @"feedback";
 NSString *const kSentryDataCategoryNameLogItem = @"log_item";
+NSString *const kSentryDataCategoryNameTraceMetric = @"trace_metric";
 NSString *const kSentryDataCategoryNameUnknown = @"unknown";
 
 NS_ASSUME_NONNULL_BEGIN
@@ -57,6 +58,9 @@
     if ([itemType isEqualToString:SentryEnvelopeItemTypes.log]) {
         return kSentryDataCategoryLogItem;
     }
+    if ([itemType isEqualToString:SentryEnvelopeItemTypes.traceMetric]) {
+        return kSentryDataCategoryTraceMetric;
+    }
 
     return kSentryDataCategoryDefault;
 }
@@ -113,6 +117,9 @@
     if ([value isEqualToString:kSentryDataCategoryNameLogItem]) {
         return kSentryDataCategoryLogItem;
     }
+    if ([value isEqualToString:kSentryDataCategoryNameTraceMetric]) {
+        return kSentryDataCategoryTraceMetric;
+    }
 
     return kSentryDataCategoryUnknown;
 }
@@ -148,6 +155,8 @@
         return kSentryDataCategoryNameFeedback;
     case kSentryDataCategoryLogItem:
         return kSentryDataCategoryNameLogItem;
+    case kSentryDataCategoryTraceMetric:
+        return kSentryDataCategoryNameTraceMetric;
 
     default: // !!!: fall-through!
     case kSentryDataCategoryUnknown:

Sources/Sentry/include/SentryClient+Private.h

@@ -83,6 +83,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)_swiftCaptureLog:(NSObject *)log withScope:(SentryScope *)scope;
 
 - (void)captureLogs;
+- (void)captureMetricsData:(NSData *)data with:(NSNumber *)itemCount;
 
 @end
 

Sources/Sentry/include/SentryDataCategory.h

@@ -20,5 +20,6 @@ typedef NS_ENUM(NSUInteger, SentryDataCategory) {
     kSentryDataCategorySpan = 11,
     kSentryDataCategoryFeedback = 12,
     kSentryDataCategoryLogItem = 13,
-    kSentryDataCategoryUnknown = 14,
+    kSentryDataCategoryTraceMetric = 14,
+    kSentryDataCategoryUnknown = 15,
 };

Sources/Swift/Helper/SentryEnvelopeItemType.swift

@@ -14,4 +14,5 @@
     public static let statsd = "statsd"
     public static let profileChunk = "profile_chunk"
     public static let log = "log"
+    public static let traceMetric = "trace_metric"
 }