feat: Session Replay

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Features
+
+- Add Session Replay, which is **still experimental**. (#3625)
+
 ## 8.24.0
 
 ### Features

Samples/iOS-Swift/iOS-Swift/AppDelegate.swift

@@ -17,13 +17,17 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         let dsn = DSNStorage.shared.getDSN() ?? AppDelegate.defaultDSN
         DSNStorage.shared.saveDSN(dsn: dsn)
 
-        SentrySDK.start { options in
+        SentrySDK.start(configureOptions: { options in
             options.dsn = dsn
             options.beforeSend = { event in
                 return event
             }
             options.debug = true
 
+            if #available(iOS 16.0, *) {
+                options.experimental.sessionReplay = SentryReplayOptions(sessionSampleRate: 1, errorSampleRate: 1, redactAllText: false, redactAllImages: true)
+            }
+
             if #available(iOS 15.0, *) {
                 options.enableMetricKit = true
             }
@@ -60,7 +64,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
             options.sessionTrackingIntervalMillis = 5_000
             options.attachScreenshot = true
             options.attachViewHierarchy = true
-            
+
 #if targetEnvironment(simulator)
             options.enableSpotlight = true
             options.environment = "test-app"
@@ -130,7 +134,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
                 }
                 return scope
             }
-        }
+        })
 
         SentrySDK.metrics.increment(key: "app.start", value: 1.0, tags: ["view": "app-delegate"])
 

Sentry.podspec

@@ -32,7 +32,8 @@ Pod::Spec.new do |s|
 
   s.subspec 'Core' do |sp|
       sp.source_files = "Sources/Sentry/**/*.{h,hpp,m,mm,c,cpp}",
-        "Sources/SentryCrash/**/*.{h,hpp,m,mm,c,cpp}", "Sources/Swift/**/*.{swift,h,hpp,m,mm,c,cpp}",
+        "Sources/SentryCrash/**/*.{h,hpp,m,mm,c,cpp}", "Sources/Swift/**/*.{swift,h,hpp,m,mm,c,cpp}"
+      sp.preserve_path = "Sources/Sentry/include/module.modulemap"
       sp.public_header_files =
         "Sources/Sentry/Public/*.h"
 
@@ -43,7 +44,8 @@ Pod::Spec.new do |s|
   s.subspec 'HybridSDK' do |sp|
       sp.source_files = "Sources/Sentry/**/*.{h,hpp,m,mm,c,cpp}",
         "Sources/SentryCrash/**/*.{h,hpp,m,mm,c,cpp}", "Sources/Swift/**/*.{swift,h,hpp,m,mm,c,cpp}"
-
+
+      sp.preserve_path = "Sources/Sentry/include/module.modulemap"
       sp.public_header_files =
         "Sources/Sentry/Public/*.h", "Sources/Sentry/include/HybridPublic/*.h"
 

SentryTestUtils/TestCurrentDateProvider.swift

@@ -43,6 +43,10 @@
         setDate(date: date().addingTimeInterval(TimeInterval(nanoseconds) / 1e9))
         internalSystemTime += nanoseconds
     }
+
+    public func advanceBy(interval: TimeInterval) {
+        setDate(date: date().addingTimeInterval(interval))
+    }
 
     public var timezoneOffsetValue = 0
     public override func timezoneOffset() -> Int {

SentryTestUtils/TestTransport.swift

@@ -1,3 +1,4 @@
+import _SentryPrivate
 import Foundation
 
 @objc

Sources/Configuration/SentryNoUI.xcconfig

@@ -0,0 +1,5 @@
+#include "Sentry.xcconfig"
+
+//This is how we avoid linking UIKit from Swift code
+//when compiling without UIKit
+OTHER_SWIFT_FLAGS = -DSENTRY_NO_UIKIT

Sources/Sentry/Public/SentryOptions.h

@@ -3,7 +3,9 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-@class SentryDsn, SentryMeasurementValue, SentryHttpStatusCodeRange, SentryScope;
+@class SentryDsn, SentryMeasurementValue, SentryHttpStatusCodeRange, SentryScope,
+    SentryReplayOptions;
+@class SentryExperimentalOptions;
 
 NS_SWIFT_NAME(Options)
 @interface SentryOptions : NSObject
@@ -269,6 +271,7 @@ NS_SWIFT_NAME(Options)
  * @note Default value is @c NO .
  */
 @property (nonatomic, assign) BOOL enablePreWarmedAppStartTracing;
+
 #endif // SENTRY_UIKIT_AVAILABLE
 
 /**
@@ -604,6 +607,12 @@ NS_SWIFT_NAME(Options)
  */
 @property (nullable, nonatomic, copy) SentryBeforeEmitMetricCallback beforeEmitMetric;
 
+/**
+ * This aggregates options for experimental features.
+ * Be aware that the options available for experimental can change at any time.
+ */
+@property (nonatomic, readonly) SentryExperimentalOptions *experimental;
+
 @end
 
 NS_ASSUME_NONNULL_END

Sources/Sentry/SentryBaseIntegration.m

@@ -1,6 +1,7 @@
 #import "SentryBaseIntegration.h"
 #import "SentryCrashWrapper.h"
 #import "SentryLog.h"
+#import "SentrySwift.h"
 #import <Foundation/Foundation.h>
 #import <SentryDependencyContainer.h>
 #import <SentryOptions+Private.h>
@@ -140,6 +141,19 @@ - (BOOL)shouldBeEnabledWithOptions:(SentryOptions *)options
         [self logWithOptionName:@"attachViewHierarchy"];
         return NO;
     }
+
+    if (integrationOptions & kIntegrationOptionEnableReplay) {
+        if (@available(iOS 16.0, tvOS 16.0, *)) {
+            if (options.experimental.sessionReplay.errorSampleRate == 0
+                && options.experimental.sessionReplay.sessionSampleRate == 0) {
+                [self logWithOptionName:@"sessionReplaySettings"];
+                return NO;
+            }
+        } else {
+            [self logWithReason:@"Session replay requires iOS 16 or above"];
+            return NO;
+        }
+    }
 #endif
 
     if ((integrationOptions & kIntegrationOptionEnableCrashHandler)

Sources/Sentry/SentryClient.m

@@ -11,7 +11,7 @@
 #import "SentryDependencyContainer.h"
 #import "SentryDispatchQueueWrapper.h"
 #import "SentryDsn.h"
-#import "SentryEnvelope.h"
+#import "SentryEnvelope+Private.h"
 #import "SentryEnvelopeItemType.h"
 #import "SentryEvent.h"
 #import "SentryException.h"
@@ -27,13 +27,16 @@
 #import "SentryMechanismMeta.h"
 #import "SentryMessage.h"
 #import "SentryMeta.h"
+#import "SentryMsgPackSerializer.h"
 #import "SentryNSDictionarySanitize.h"
 #import "SentryNSError.h"
 #import "SentryOptions+Private.h"
 #import "SentryPropagationContext.h"
 #import "SentryRandom.h"
+#import "SentryReplayEvent.h"
 #import "SentrySDK+Private.h"
 #import "SentryScope+Private.h"
+#import "SentrySerialization.h"
 #import "SentrySession.h"
 #import "SentryStacktraceBuilder.h"
 #import "SentrySwift.h"
@@ -472,13 +475,44 @@
     }
 
     SentryEnvelopeItem *item = [[SentryEnvelopeItem alloc] initWithSession:session];
-    SentryEnvelopeHeader *envelopeHeader = [[SentryEnvelopeHeader alloc] initWithId:nil
-                                                                       traceContext:nil];
-    SentryEnvelope *envelope = [[SentryEnvelope alloc] initWithHeader:envelopeHeader
+    SentryEnvelope *envelope = [[SentryEnvelope alloc] initWithHeader:[SentryEnvelopeHeader empty]
                                                            singleItem:item];
     [self captureEnvelope:envelope];
 }
 
+- (void)captureReplayEvent:(SentryReplayEvent *)replayEvent
+           replayRecording:(SentryReplayRecording *)replayRecording
+                     video:(NSURL *)videoURL
+                 withScope:(SentryScope *)scope
+{
+    replayEvent = (SentryReplayEvent *)[self prepareEvent:replayEvent
+                                                withScope:scope
+                                   alwaysAttachStacktrace:NO];
+
+    if (![replayEvent isKindOfClass:SentryReplayEvent.class]) {
+        SENTRY_LOG_DEBUG(@"The event preprocessor didn't update the replay event in place. The "
+                         @"replay was discarded.");
+        return;
+    }
+
+    SentryEnvelopeItem *videoEnvelopeItem =
+        [[SentryEnvelopeItem alloc] initWithReplayEvent:replayEvent
+                                        replayRecording:replayRecording
+                                                  video:videoURL];
+
+    if (videoEnvelopeItem == nil) {
+        SENTRY_LOG_DEBUG(@"The Session Replay segment will not be sent to Sentry because an "
+                         @"Envelope Item could not be created.");
+        return;
+    }
+
+    SentryEnvelope *envelope = [[SentryEnvelope alloc]
+        initWithHeader:[[SentryEnvelopeHeader alloc] initWithId:replayEvent.eventId]
+                 items:@[ videoEnvelopeItem ]];
+
+    [self captureEnvelope:envelope];
+}
+
 - (void)captureEnvelope:(SentryEnvelope *)envelope
 {
     if ([self isDisabled]) {
@@ -553,9 +587,11 @@
 
     BOOL eventIsNotATransaction
         = event.type == nil || ![event.type isEqualToString:SentryEnvelopeItemTypeTransaction];
+    BOOL eventIsNotReplay
+        = event.type == nil || ![event.type isEqualToString:SentryEnvelopeItemTypeReplayVideo];
 
-    // Transactions have their own sampleRate
-    if (eventIsNotATransaction && [self isSampled:self.options.sampleRate]) {
+    // Transactions and replays have their own sampleRate
+    if (eventIsNotATransaction && eventIsNotReplay && [self isSampled:self.options.sampleRate]) {
         SENTRY_LOG_DEBUG(@"Event got sampled, will not send the event");
         [self recordLostEvent:kSentryDataCategoryError reason:kSentryDiscardReasonSampleRate];
         return nil;
@@ -582,8 +618,8 @@
 
     [self setSdk:event];
 
-    // We don't want to attach debug meta and stacktraces for transactions;
-    if (eventIsNotATransaction) {
+    // We don't want to attach debug meta and stacktraces for transactions and replays.
+    if (eventIsNotATransaction && eventIsNotReplay) {
         BOOL shouldAttachStacktrace = alwaysAttachStacktrace || self.options.attachStacktrace
             || (nil != event.exceptions && [event.exceptions count] > 0);
 
@@ -623,6 +659,10 @@
 
     event = [scope applyToEvent:event maxBreadcrumb:self.options.maxBreadcrumbs];
 
+    if (!eventIsNotReplay) {
+        event.breadcrumbs = nil;
+    }
+
     if ([self isWatchdogTermination:event isCrashEvent:isCrashEvent]) {
         // Remove some mutable properties from the device/app contexts which are no longer
         // applicable

Sources/Sentry/SentryCoreGraphicsHelper.m

@@ -0,0 +1,18 @@
+#import "SentryCoreGraphicsHelper.h"
+#if SENTRY_HAS_UIKIT
+@implementation SentryCoreGraphicsHelper
++ (CGMutablePathRef)excludeRect:(CGRect)rectangle fromPath:(CGMutablePathRef)path
+{
+#    if (TARGET_OS_IOS || TARGET_OS_TV)
+#        ifdef __IPHONE_16_0
+    if (@available(iOS 16.0, tvOS 16.0, *)) {
+        CGPathRef exclude = CGPathCreateWithRect(rectangle, nil);
+        CGPathRef newPath = CGPathCreateCopyBySubtractingPath(path, exclude, YES);
+        return CGPathCreateMutableCopy(newPath);
+    }
+#        endif // defined(__IPHONE_16_0)
+#    endif // (TARGET_OS_IOS || TARGET_OS_TV)
+    return path;
+}
+@end
+#endif // SENTRY_HAS_UIKIT

Sources/Sentry/SentryDataCategoryMapper.m

@@ -11,6 +11,7 @@
 NSString *const kSentryDataCategoryNameAttachment = @"attachment";
 NSString *const kSentryDataCategoryNameUserFeedback = @"user_report";
 NSString *const kSentryDataCategoryNameProfile = @"profile";
+NSString *const kSentryDataCategoryNameReplay = @"replay";
 NSString *const kSentryDataCategoryNameMetricBucket = @"metric_bucket";
 NSString *const kSentryDataCategoryNameUnknown = @"unknown";
 
@@ -34,6 +35,9 @@
     if ([itemType isEqualToString:SentryEnvelopeItemTypeProfile]) {
         return kSentryDataCategoryProfile;
     }
+    if ([itemType isEqualToString:SentryEnvelopeItemTypeReplayVideo]) {
+        return kSentryDataCategoryReplay;
+    }
     // The envelope item type used for metrics is statsd whereas the client report category for
     // discarded events is metric_bucket.
     if ([itemType isEqualToString:SentryEnvelopeItemTypeStatsd]) {
@@ -79,6 +83,9 @@
     if ([value isEqualToString:kSentryDataCategoryNameProfile]) {
         return kSentryDataCategoryProfile;
     }
+    if ([value isEqualToString:kSentryDataCategoryNameReplay]) {
+        return kSentryDataCategoryReplay;
+    }
     if ([value isEqualToString:kSentryDataCategoryNameMetricBucket]) {
         return kSentryDataCategoryMetricBucket;
     }
@@ -114,6 +121,8 @@
         return kSentryDataCategoryNameMetricBucket;
     case kSentryDataCategoryUnknown:
         return kSentryDataCategoryNameUnknown;
+    case kSentryDataCategoryReplay:
+        return kSentryDataCategoryNameReplay;
     }
 }
 

Sources/Sentry/SentryDateUtil.m

@@ -46,6 +46,11 @@ + (NSDate *_Nullable)getMaximumDate:(NSDate *_Nullable)first andOther:(NSDate *_
     }
 }
 
++ (long)millisecondsSince1970:(NSDate *)date
+{
+    return (long)([date timeIntervalSince1970] * 1000);
+}
+
 @end
 
 NS_ASSUME_NONNULL_END

Sources/Sentry/SentryEnvelope.m

@@ -9,6 +9,9 @@
 #import "SentryLog.h"
 #import "SentryMessage.h"
 #import "SentryMeta.h"
+#import "SentryMsgPackSerializer.h"
+#import "SentryReplayEvent.h"
+#import "SentryReplayRecording.h"
 #import "SentrySdkInfo.h"
 #import "SentrySerialization.h"
 #import "SentrySession.h"
@@ -48,6 +51,11 @@
     return self;
 }
 
++ (instancetype)empty
+{
+    return [[SentryEnvelopeHeader alloc] initWithId:nil traceContext:nil];
+}
+
 @end
 
 @implementation SentryEnvelopeItem
@@ -198,6 +206,38 @@
     return [self initWithHeader:itemHeader data:data];
 }
 
+- (nullable instancetype)initWithReplayEvent:(SentryReplayEvent *)replayEvent
+                             replayRecording:(SentryReplayRecording *)replayRecording
+                                       video:(NSURL *)videoURL
+{
+    NSData *replayEventData = [SentrySerialization dataWithJSONObject:[replayEvent serialize]];
+    NSData *recording = [SentrySerialization dataWithReplayRecording:replayRecording];
+    NSURL *envelopeContentUrl =
+        [[videoURL URLByDeletingPathExtension] URLByAppendingPathExtension:@"dat"];
+
+    BOOL success = [SentryMsgPackSerializer serializeDictionaryToMessagePack:@{
+        @"replay_event" : replayEventData,
+        @"replay_recording" : recording,
+        @"replay_video" : videoURL
+    }
+                                                                    intoFile:envelopeContentUrl];
+    if (success == NO) {
+        SENTRY_LOG_ERROR(@"Could not create MessagePack for session replay envelope item.");
+        return nil;
+    }
+
+    NSData *envelopeItemContent = [NSData dataWithContentsOfURL:envelopeContentUrl];
+
+    NSError *error;
+    if (![NSFileManager.defaultManager removeItemAtURL:envelopeContentUrl error:&error]) {
+        SENTRY_LOG_ERROR(@"Cound not delete temporary replay content from disk: %@", error);
+    }
+    return [self initWithHeader:[[SentryEnvelopeItemHeader alloc]
+                                    initWithType:SentryEnvelopeItemTypeReplayVideo
+                                          length:envelopeItemContent.length]
+                           data:envelopeItemContent];
+}
+
 @end
 
 @implementation SentryEnvelope