fix(launch profiling): fix data wipe between integration test runs

Samples/iOS-Swift/iOS-Swift.xcodeproj/project.pbxproj

@@ -38,7 +38,6 @@
 		84B527BD28DD25E400475E8D /* SentryDevice.mm in Sources */ = {isa = PBXBuildFile; fileRef = 84B527BC28DD25E400475E8D /* SentryDevice.mm */; };
 		84BE546F287503F100ACC735 /* SentrySDKPerformanceBenchmarkTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 84BE546E287503F100ACC735 /* SentrySDKPerformanceBenchmarkTests.m */; };
 		84BE547E287645B900ACC735 /* SentryProcessInfo.m in Sources */ = {isa = PBXBuildFile; fileRef = 84BE54792876451D00ACC735 /* SentryProcessInfo.m */; };
-		84DEE88E2B6A4D1200A7BC17 /* AppStartup.m in Sources */ = {isa = PBXBuildFile; fileRef = 84DEE88D2B6A4D1200A7BC17 /* AppStartup.m */; };
 		84FB812A284001B800F3A94A /* SentryBenchmarking.mm in Sources */ = {isa = PBXBuildFile; fileRef = 84FB8129284001B800F3A94A /* SentryBenchmarking.mm */; };
 		84FB812B284001B800F3A94A /* SentryBenchmarking.mm in Sources */ = {isa = PBXBuildFile; fileRef = 84FB8129284001B800F3A94A /* SentryBenchmarking.mm */; };
 		8E8C57AF25EF16E6001CEEFA /* TraceTestViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8E8C57AE25EF16E6001CEEFA /* TraceTestViewController.swift */; };
@@ -315,8 +314,6 @@
 		84BE546E287503F100ACC735 /* SentrySDKPerformanceBenchmarkTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = SentrySDKPerformanceBenchmarkTests.m; sourceTree = "<group>"; };
 		84BE54782876451D00ACC735 /* SentryProcessInfo.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = SentryProcessInfo.h; sourceTree = "<group>"; };
 		84BE54792876451D00ACC735 /* SentryProcessInfo.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = SentryProcessInfo.m; sourceTree = "<group>"; };
-		84DEE88C2B6A4D1200A7BC17 /* AppStartup.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppStartup.h; sourceTree = "<group>"; };
-		84DEE88D2B6A4D1200A7BC17 /* AppStartup.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppStartup.m; sourceTree = "<group>"; };
 		84FB8125284001B800F3A94A /* SentryBenchmarking.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = SentryBenchmarking.h; sourceTree = "<group>"; };
 		84FB8129284001B800F3A94A /* SentryBenchmarking.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = SentryBenchmarking.mm; sourceTree = "<group>"; };
 		84FB812C2840021B00F3A94A /* iOS-Swift-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "iOS-Swift-Bridging-Header.h"; sourceTree = "<group>"; };
@@ -478,8 +475,6 @@
 				D8DBDA73274D4DF900007380 /* ViewControllers */,
 				63F93AA9245AC91600A500DB /* iOS-Swift.entitlements */,
 				637AFDA9243B02760034958B /* AppDelegate.swift */,
-				84DEE88C2B6A4D1200A7BC17 /* AppStartup.h */,
-				84DEE88D2B6A4D1200A7BC17 /* AppStartup.m */,
 				637AFDAD243B02760034958B /* TransactionsViewController.swift */,
 				84AB90782A50031B0054C99A /* Profiling */,
 				D80D021229EE93630084393D /* ErrorsViewController.swift */,
@@ -958,7 +953,6 @@
 				7B79000429028C7300A7F467 /* MetricKitManager.swift in Sources */,
 				D8D7BB4A2750067900044146 /* UIAssert.swift in Sources */,
 				D8F3D057274E574200B56F8C /* LoremIpsumViewController.swift in Sources */,
-				84DEE88E2B6A4D1200A7BC17 /* AppStartup.m in Sources */,
 				629EC8AD2B0B537400858855 /* ANRs.swift in Sources */,
 				D8DBDA78274D5FC400007380 /* SplitViewController.swift in Sources */,
 				84ACC43C2A73CB5900932A18 /* ProfilingNetworkScanner.swift in Sources */,

Samples/iOS-Swift/iOS-Swift.xcodeproj/xcshareddata/xcschemes/iOS-Swift.xcscheme

@@ -73,6 +73,14 @@
             argument = "--disable-file-io-tracing"
             isEnabled = "NO">
          </CommandLineArgument>
+         <CommandLineArgument
+            argument = "--io.sentry.wipe-data"
+            isEnabled = "YES">
+         </CommandLineArgument>
+         <CommandLineArgument
+            argument = "--io.sentry.slow-load-method"
+            isEnabled = "YES">
+         </CommandLineArgument>
          <CommandLineArgument
             argument = "--disable-watchdog-tracking"
             isEnabled = "NO">
@@ -82,8 +90,8 @@
             isEnabled = "NO">
          </CommandLineArgument>
          <CommandLineArgument
-            argument = "--io.sentry.test.profilesAppLaunches"
-            isEnabled = "NO">
+            argument = "--profile-app-launches"
+            isEnabled = "YES">
          </CommandLineArgument>
          <CommandLineArgument
             argument = "--disable-crash-handler"

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

@@ -130,9 +130,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
 
-        print("[iOS-Swift] launch arguments: \(ProcessInfo.processInfo.arguments)")
-        print("[iOS-Swift] environment: \(ProcessInfo.processInfo.environment)")
+        print("[iOS-Swift] [debug] launch arguments: \(ProcessInfo.processInfo.arguments)")
+        print("[iOS-Swift] [debug] environment: \(ProcessInfo.processInfo.environment)")
 
+        maybeWipeData()
         AppDelegate.startSentry()
 
         if #available(iOS 15.0, *) {
@@ -162,3 +163,19 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         // swiftlint:enable force_cast
     }
 }
+
+private extension AppDelegate {
+    // previously tried putting this in an AppDelegate.load override in ObjC, but it wouldn't run until after a launch profiler would have an opportunity to run, since SentryProfiler.load would always run first due to being dynamically linked in a framework module. it is sufficient to do it before calling SentrySDK.startWithOptions to clear state for testProfiledAppLaunches because we don't make any assertions on a launch profile the first launch of the app in that test 
+    func maybeWipeData() {
+        if ProcessInfo.processInfo.arguments.contains("--io.sentry.wipe-data") {
+            print("[iOS-Swift] [debug] removing app data")
+            let appSupport = NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory, .userDomainMask, true).first!
+            let cache = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first!
+            for path in [appSupport, cache] {
+                for item in FileManager.default.enumerator(atPath: path)! {
+                    try! FileManager.default.removeItem(atPath: (path as NSString).appendingPathComponent((item as! String)))
+                }
+            }
+        }
+    }
+}

Samples/iOS-Swift/iOS-Swift/Profiling/ProfilingViewController.swift

@@ -46,7 +46,7 @@ class ProfilingViewController: UIViewController, UITextFieldDelegate {
         let value = SentryBenchmarking.stopBenchmark()!
         valueTextField.isHidden = false
         valueTextField.text = value
-        print("[iOS-Swift] [ProfilingViewController] benchmarking results:\n\(value)")
+        print("[iOS-Swift] [debug] [ProfilingViewController] benchmarking results:\n\(value)")
     }
 
     @IBAction func startCPUWork(_ sender: UIButton) {
@@ -130,7 +130,7 @@ extension ProfilingViewController {
             let url = file as! URL
             if url.absoluteString.contains(fileName) {
                 block(url)
-                print("[iOS-Swift] [ProfilingViewController] removing file at \(url)")
+                print("[iOS-Swift] [debug] [ProfilingViewController] removing file at \(url)")
                 try! FileManager.default.removeItem(at: url)
                 return
             }
@@ -150,7 +150,7 @@ extension ProfilingViewController {
             return
         }
         let contents = data.base64EncodedString()
-        print("[iOS-Swift] [ProfilingViewController] contents of file at \(file): \(String(describing: String(data: data, encoding: .utf8)))")
+        print("[iOS-Swift] [debug] [ProfilingViewController] contents of file at \(file): \(String(describing: String(data: data, encoding: .utf8)))")
         profilingUITestDataMarshalingTextField.text = contents
         profilingUITestDataMarshalingStatus.text = "✅"
     }

Sources/Sentry/Profiling/SentryLaunchProfiling.m

@@ -15,17 +15,17 @@
 #    import "SentrySamplerDecision.h"
 #    import "SentrySampling.h"
 #    import "SentrySamplingContext.h"
-#    import "SentryTracer.h"
+#    import "SentryTraceOrigins.h"
+#    import "SentryTracer+Private.h"
 #    import "SentryTracerConfiguration.h"
-#    import "SentryTransactionContext.h"
+#    import "SentryTransactionContext+Private.h"
+
+NS_ASSUME_NONNULL_BEGIN
 
 BOOL isTracingAppLaunch;
-SentryId *_Nullable appLaunchTraceId;
-NSObject *appLaunchTraceLock;
-uint64_t appLaunchSystemTime;
 NSString *const kSentryLaunchProfileConfigKeyTracesSampleRate = @"traces";
 NSString *const kSentryLaunchProfileConfigKeyProfilesSampleRate = @"profiles";
-SentryTracer *_Nullable launchTracer;
+static SentryTracer *_Nullable launchTracer;
 
 #    pragma mark - Private
 
@@ -91,6 +91,29 @@
     }];
 }
 
+SentryTransactionContext *
+context(NSNumber *tracesRate)
+{
+    SentryTransactionContext *context =
+        [[SentryTransactionContext alloc] initWithName:@"launch"
+                                            nameSource:kSentryTransactionNameSourceCustom
+                                             operation:@"app.lifecycle"
+                                                origin:SentryTraceOriginAutoAppStartProfile
+                                               sampled:kSentrySampleDecisionYes];
+    context.sampleRate = tracesRate;
+    return context;
+}
+
+SentryTracerConfiguration *
+config(NSNumber *profilesRate)
+{
+    SentryTracerConfiguration *config = [SentryTracerConfiguration defaultConfiguration];
+    config.profilesSamplerDecision =
+        [[SentrySamplerDecision alloc] initWithDecision:kSentrySampleDecisionYes
+                                          forSampleRate:profilesRate];
+    return config;
+}
+
 void
 startLaunchProfile(void)
 {
@@ -111,39 +134,36 @@
         [SentryLog configure:YES diagnosticLevel:kSentryLevelDebug];
 #    endif // defined(DEBUG)
 
-        appLaunchSystemTime = SentryDependencyContainer.sharedInstance.dateProvider.systemTime;
-        appLaunchTraceLock = [[NSObject alloc] init];
-        appLaunchTraceId = [[SentryId alloc] init];
-
-        SENTRY_LOG_INFO(@"Starting app launch profile at %llu", appLaunchSystemTime);
-
-        SentryTransactionContext *context =
-            [[SentryTransactionContext alloc] initWithName:@"launch" operation:@"app.lifecycle"];
-        SentryTracerConfiguration *config = [SentryTracerConfiguration defaultConfiguration];
         NSDictionary<NSString *, NSNumber *> *rates = appLaunchProfileConfiguration();
         NSNumber *profilesRate = rates[kSentryLaunchProfileConfigKeyProfilesSampleRate];
         NSNumber *tracesRate = rates[kSentryLaunchProfileConfigKeyTracesSampleRate];
-        if (profilesRate != nil && tracesRate != nil) {
-            config.profilesSamplerDecision =
-                [[SentrySamplerDecision alloc] initWithDecision:kSentrySampleDecisionYes
-                                                  forSampleRate:profilesRate];
-            context.sampleRate = tracesRate;
+        if (profilesRate == nil || tracesRate == nil) {
+            SENTRY_LOG_DEBUG(
+                @"Received a nil configured launch sample rate, will not trace or profile.");
+            return;
         }
-        launchTracer = [[SentryTracer alloc] initWithTransactionContext:context
+
+        SENTRY_LOG_INFO(@"Starting app launch profile.");
+        launchTracer = [[SentryTracer alloc] initWithTransactionContext:context(tracesRate)
                                                                     hub:nil
-                                                          configuration:config];
+                                                          configuration:config(profilesRate)];
     });
 }
 
 void
-stopLaunchProfile(void)
+stopLaunchProfile(SentryHub *hub)
 {
     if (launchTracer == nil) {
         SENTRY_LOG_DEBUG(@"No launch tracer present to stop.");
+        return;
     }
 
     SENTRY_LOG_DEBUG(@"Finishing launch tracer.");
+
+    launchTracer.hub = hub;
     [launchTracer finish];
 }
 
+NS_ASSUME_NONNULL_END
+
 #endif // SENTRY_TARGET_PROFILING_SUPPORTED

Sources/Sentry/SentryProfiler.mm

@@ -52,6 +52,7 @@
 
 #    if defined(TEST) || defined(TESTCI) || defined(DEBUG)
 #        import "SentryFileManager.h"
+#        import "SentryInternalDefines.h"
 #        import "SentryLaunchProfiling.h"
 
 /**
@@ -436,7 +437,7 @@ + (nullable SentryEnvelopeItem *)createEnvelopeItemForProfilePayload:
     return [[SentryEnvelopeItem alloc] initWithHeader:header data:JSONData];
 }
 
-#    if defined(TEST) || defined(TESTCI)
+#    if defined(TEST) || defined(TESTCI) || defined(DEBUG)
 void
 writeProfileFile(NSDictionary<NSString *, id> *payload)
 {
@@ -460,20 +461,25 @@ + (nullable SentryEnvelopeItem *)createEnvelopeItemForProfilePayload:
 
     NSString *pathToWrite;
     if (isTracingAppLaunch) {
+        SENTRY_LOG_DEBUG(@"Writing app launch profile.");
         pathToWrite = [appSupportDirPath stringByAppendingPathComponent:@"launchProfile"];
-        if ([fm fileExistsAtPath:pathToWrite]) {
-            SENTRY_LOG_DEBUG(@"Already a launch profile file present.");
-            return;
-        }
     } else {
+        SENTRY_LOG_DEBUG(@"Overwriting last non-launch profile.");
         pathToWrite = [appSupportDirPath stringByAppendingPathComponent:@"profile"];
     }
 
-    SENTRY_LOG_DEBUG(@"Writing app launch profile to file.");
+    if ([fm fileExistsAtPath:pathToWrite]) {
+        SENTRY_LOG_DEBUG(@"Already a%@ profile file present; make sure to remove them right after "
+                         @"using them, and that tests clean state in between so there isn't "
+                         @"leftover config producing one when it isn't expected.",
+            isTracingAppLaunch ? @" launch" : @"");
+    }
+
+    SENTRY_LOG_DEBUG(@"Writing%@ profile to file.", isTracingAppLaunch ? @" launch" : @"");
     SENTRY_CASSERT(
         [data writeToFile:pathToWrite atomically:YES], @"Failed to write profile to test file");
 }
-#    endif // defined(TEST) || defined(TESTCI)
+#    endif // defined(TEST) || defined(TESTCI) || defined(DEBUG)
 
 + (nullable NSMutableDictionary<NSString *, id> *)collectProfileBetween:(uint64_t)startSystemTime
                                                                     and:(uint64_t)endSystemTime
@@ -487,9 +493,9 @@ + (nullable SentryEnvelopeItem *)createEnvelopeItemForProfilePayload:
 
     const auto payload = [profiler serializeBetween:startSystemTime and:endSystemTime onHub:hub];
 
-#    if defined(TEST) || defined(TESTCI)
+#    if defined(TEST) || defined(TESTCI) || defined(DEBUG)
     writeProfileFile(payload);
-#    endif // defined(TEST) || defined(TESTCI)
+#    endif // defined(TEST) || defined(TESTCI) || defined(DEBUG)
 
     return payload;
 }

Sources/Sentry/SentrySDK.m

@@ -164,10 +164,6 @@ + (void)setStartTimestamp:(NSDate *)value
 
 + (void)startWithOptions:(SentryOptions *)options
 {
-#if SENTRY_TARGET_PROFILING_SUPPORTED
-    stopLaunchProfile();
-#endif // SENTRY_TARGET_PROFILING_SUPPORTED
-
     [SentryLog configure:options.debug diagnosticLevel:options.diagnosticLevel];
 
     // We accept the tradeoff that the SDK might not be fully initialized directly after
@@ -190,7 +186,8 @@ + (void)startWithOptions:(SentryOptions *)options
         = options.initialScope([[SentryScope alloc] initWithMaxBreadcrumbs:options.maxBreadcrumbs]);
     // The Hub needs to be initialized with a client so that closing a session
     // can happen.
-    [SentrySDK setCurrentHub:[[SentryHub alloc] initWithClient:newClient andScope:scope]];
+    SentryHub *hub = [[SentryHub alloc] initWithClient:newClient andScope:scope];
+    [SentrySDK setCurrentHub:hub];
     SENTRY_LOG_DEBUG(@"SDK initialized! Version: %@", SentryMeta.versionString);
 
     SENTRY_LOG_DEBUG(@"Dispatching init work required to run on main thread.");
@@ -204,11 +201,14 @@ + (void)startWithOptions:(SentryOptions *)options
 #if TARGET_OS_IOS && SENTRY_HAS_UIKIT
         [SentryDependencyContainer.sharedInstance.uiDeviceWrapper start];
 #endif // TARGET_OS_IOS && SENTRY_HAS_UIKIT
-    }];
 
 #if SENTRY_TARGET_PROFILING_SUPPORTED
-    configureLaunchProfiling(options);
+        [SentryDependencyContainer.sharedInstance.dispatchQueueWrapper dispatchAsyncWithBlock:^{
+            stopLaunchProfile(hub);
+            configureLaunchProfiling(options);
+        }];
 #endif // SENTRY_TARGET_PROFILING_SUPPORTED
+    }];
 }
 
 + (void)startWithConfigureOptions:(void (^)(SentryOptions *options))configureOptions

Sources/Sentry/SentryTracer.m

@@ -609,15 +609,6 @@ - (void)finishInternal
 #if SENTRY_TARGET_PROFILING_SUPPORTED
     if (self.isProfiling) {
         [self captureTransactionWithProfile:transaction];
-
-        // as long as this isn't used for any conditional branching logic, and is just being set to
-        // NO, we don't need to synchronize the read here
-        if (isTracingAppLaunch) {
-            @synchronized(appLaunchTraceLock) {
-                isTracingAppLaunch = NO;
-            }
-        }
-
         return;
     }
 #endif // SENTRY_TARGET_PROFILING_SUPPORTED