feat: Add thread id and name to span data

Add current thread name and thread id to every span
when the SDK initializes the span.

Fixes GH-3355

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Features
+
+- Add thread id and name to span data (#3359)
+
 ## 8.14.2
 
 ### Features

Sources/Sentry/SentryCoreDataTracker.m

@@ -114,7 +114,7 @@ - (void)addExtraInfoToSpan:(SentrySpan *)span withContext:(NSManagedObjectContex
 {
     BOOL isMainThread = [NSThread isMainThread];
 
-    [span setDataValue:@(isMainThread) forKey:BLOCKED_MAIN_THREAD];
+    [span setDataValue:@(isMainThread) forKey:SPAN_DATA_BLOCKED_MAIN_THREAD];
     NSMutableArray<NSString *> *systems = [NSMutableArray<NSString *> array];
     NSMutableArray<NSString *> *names = [NSMutableArray<NSString *> array];
     [context.persistentStoreCoordinator.persistentStores enumerateObjectsUsingBlock:^(

Sources/Sentry/SentryDependencyContainer.m

@@ -11,6 +11,7 @@
 #import "SentryRandom.h"
 #import "SentrySysctl.h"
 #import "SentrySystemWrapper.h"
+#import "SentryThreadInspector.h"
 #import "SentryUIDeviceWrapper.h"
 #import <SentryAppStateManager.h>
 #import <SentryClient+Private.h>
@@ -132,6 +133,19 @@ - (SentrySysctl *)sysctlWrapper
     return _sysctlWrapper;
 }
 
+- (SentryThreadInspector *)threadInspector
+{
+    if (_threadInspector == nil) {
+        @synchronized(sentryDependencyContainerLock) {
+            if (_threadInspector == nil) {
+                SentryOptions *options = [[[SentrySDK currentHub] getClient] options];
+                _threadInspector = [[SentryThreadInspector alloc] initWithOptions:options];
+            }
+        }
+    }
+    return _threadInspector;
+}
+
 - (SentryExtraContextProvider *)extraContextProvider
 {
     if (_extraContextProvider == nil) {

Sources/Sentry/SentryNSDataTracker.m

@@ -190,7 +190,7 @@ - (void)mainThreadExtraInfo:(id<SentrySpan>)span
 {
     BOOL isMainThread = [NSThread isMainThread];
 
-    [span setDataValue:@(isMainThread) forKey:BLOCKED_MAIN_THREAD];
+    [span setDataValue:@(isMainThread) forKey:SPAN_DATA_BLOCKED_MAIN_THREAD];
 
     if (!isMainThread) {
         return;
@@ -210,7 +210,7 @@ - (void)mainThreadExtraInfo:(id<SentrySpan>)span
         // and only the 'main' frame remains in the stack
         // therefore, there is nothing to do about it
         // and we should not report it as an issue.
-        [span setDataValue:@(NO) forKey:BLOCKED_MAIN_THREAD];
+        [span setDataValue:@(NO) forKey:SPAN_DATA_BLOCKED_MAIN_THREAD];
     } else {
         [((SentrySpan *)span) setFrames:frames];
     }

Sources/Sentry/SentrySpan.m

@@ -1,17 +1,20 @@
 #import "SentrySpan.h"
 #import "NSDate+SentryExtras.h"
 #import "NSDictionary+SentrySanitize.h"
+#import "SentryCrashThread.h"
 #import "SentryCurrentDateProvider.h"
 #import "SentryDependencyContainer.h"
 #import "SentryFrame.h"
 #import "SentryId.h"
+#import "SentryInternalDefines.h"
 #import "SentryLog.h"
 #import "SentryMeasurementValue.h"
 #import "SentryNoOpSpan.h"
 #import "SentrySampleDecision+Private.h"
 #import "SentrySerializable.h"
 #import "SentrySpanContext.h"
 #import "SentrySpanId.h"
+#import "SentryThreadInspector.h"
 #import "SentryTime.h"
 #import "SentryTraceHeader.h"
 #import "SentryTracer.h"
@@ -33,6 +36,18 @@ - (instancetype)initWithContext:(SentrySpanContext *)context
     if (self = [super init]) {
         self.startTimestamp = [SentryDependencyContainer.sharedInstance.dateProvider date];
         _data = [[NSMutableDictionary alloc] init];
+
+        SentryCrashThread currentThread = sentrycrashthread_self();
+        _data[SPAN_DATA_THREAD_ID] = @(currentThread);
+
+        if ([NSThread isMainThread]) {
+            _data[SPAN_DATA_THREAD_NAME] = @"main";
+        } else {
+            NSString *threadName = [SentryDependencyContainer.sharedInstance.threadInspector
+                getThreadName:currentThread];
+            _data[SPAN_DATA_THREAD_NAME] = threadName;
+        }
+
         _tags = [[NSMutableDictionary alloc] init];
         _isFinished = NO;
 

Sources/Sentry/include/HybridPublic/SentryDependencyContainer.h

@@ -17,6 +17,7 @@
 @class SentrySysctl;
 @class SentrySystemWrapper;
 @class SentryThreadWrapper;
+@class SentryThreadInspector;
 @protocol SentryRandom;
 
 #if SENTRY_HAS_METRIC_KIT
@@ -68,6 +69,7 @@ SENTRY_NO_INIT
 @property (nonatomic, strong) SentryBinaryImageCache *binaryImageCache;
 @property (nonatomic, strong) SentryExtraContextProvider *extraContextProvider;
 @property (nonatomic, strong) SentrySysctl *sysctlWrapper;
+@property (nonatomic, strong) SentryThreadInspector *threadInspector;
 
 #if SENTRY_UIKIT_AVAILABLE
 @property (nonatomic, strong) SentryFramesTracker *framesTracker;

Sources/Sentry/include/SentryInternalDefines.h

@@ -59,4 +59,6 @@ static NSString *const SentryPlatformName = @"cocoa";
         (__cond_result);                                                                           \
     })
 
-#define BLOCKED_MAIN_THREAD @"blocked_main_thread"
+#define SPAN_DATA_BLOCKED_MAIN_THREAD @"blocked_main_thread"
+#define SPAN_DATA_THREAD_ID @"thread.id"
+#define SPAN_DATA_THREAD_NAME @"thread.name"

Sources/Sentry/include/SentryThreadInspector.h

@@ -31,6 +31,8 @@ SENTRY_NO_INIT
  */
 - (NSArray<SentryThread *> *)getCurrentThreadsWithStackTrace;
 
+- (NSString *)getThreadName:(SentryCrashThread)thread;
+
 @end
 
 NS_ASSUME_NONNULL_END

Tests/SentryTests/Transaction/SentrySpanTests.swift

@@ -53,6 +53,32 @@ class SentrySpanTests: XCTestCase {
         XCTAssertFalse(span.isFinished)
     }
 
+    func testInit_SetsMainThreadInfoAsSpanData() {
+        let span = fixture.getSut()
+        XCTAssertEqual("main", span.data["thread.name"] as! String)
+
+        let threadId = sentrycrashthread_self()
+        XCTAssertEqual(NSNumber(value: threadId), span.data["thread.id"] as! NSNumber)
+    }
+
+    func testInit_SetsThreadInfoAsSpanData_FromBackGroundThread() {
+        let expect = expectation(description: "Thread must be called.")
+
+        Thread.detachNewThread {
+            let threadName = "test-thread-name"
+            Thread.current.name = threadName
+
+            let span = self.fixture.getSut()
+            XCTAssertEqual(threadName, span.data["thread.name"] as! String)
+            let threadId = sentrycrashthread_self()
+            XCTAssertEqual(NSNumber(value: threadId), span.data["thread.id"] as! NSNumber)
+
+            expect.fulfill()
+        }
+
+        wait(for: [expect], timeout: 0.1)
+    }
+
     func testFinish() {
         let client = TestClient(options: fixture.options)!
         let span = fixture.getSut(client: client)
@@ -191,11 +217,11 @@ class SentrySpanTests: XCTestCase {
 
         span.setData(value: fixture.extraValue, key: fixture.extraKey)
 
-        XCTAssertEqual(span.data.count, 1)
+        XCTAssertEqual(span.data.count, 3)
         XCTAssertEqual(span.data[fixture.extraKey] as! String, fixture.extraValue)
 
         span.removeData(key: fixture.extraKey)
-        XCTAssertEqual(span.data.count, 0)
+        XCTAssertEqual(span.data.count, 2, "Only expected thread.name and thread.id in data.")
         XCTAssertNil(span.data[fixture.extraKey])
     }
 
@@ -237,7 +263,9 @@ class SentrySpanTests: XCTestCase {
         XCTAssertEqual(serialization["sampled"] as? NSNumber, true)
         XCTAssertNotNil(serialization["data"])
         XCTAssertNotNil(serialization["tags"])
-        XCTAssertEqual((serialization["data"] as! Dictionary)[fixture.extraKey], fixture.extraValue)
+
+        let data = serialization["data"] as? [String: Any]
+        XCTAssertEqual(data?[fixture.extraKey] as! String, fixture.extraValue)
         XCTAssertEqual((serialization["tags"] as! Dictionary)[fixture.extraKey], fixture.extraValue)
         XCTAssertEqual("manual", serialization["origin"] as? String)
     }
@@ -246,7 +274,7 @@ class SentrySpanTests: XCTestCase {
         let span = SentrySpan(tracer: fixture.tracer, context: SpanContext(operation: "test"))
         let serialization = span.serialize()
 
-        XCTAssertNil(serialization["data"])
+        XCTAssertEqual(2, (serialization["data"] as? [String: Any])?.count, "Only expected thread.name and thread.id in data.")
     }
 
     func testSerialization_withFrames() {
@@ -269,7 +297,8 @@ class SentrySpanTests: XCTestCase {
         span.finish()
 
         let serialization = span.serialize()
-        XCTAssertEqual((serialization["data"] as! Dictionary)["date"], "1970-01-01T00:00:10.000Z")
+        let data = serialization["data"] as? [String: Any]
+        XCTAssertEqual(data?["date"] as? String, "1970-01-01T00:00:10.000Z")
     }
 
     func testSanitizeDataSpan() {
@@ -279,14 +308,15 @@ class SentrySpanTests: XCTestCase {
         span.finish()
 
         let serialization = span.serialize()
-        XCTAssertEqual((serialization["data"] as! Dictionary)["date"], "1970-01-01T00:00:10.000Z")
+        let data = serialization["data"] as? [String: Any]
+        XCTAssertEqual(data?["date"] as? String, "1970-01-01T00:00:10.000Z")
     }
 
     func testSerialization_WithNoDataAndTag() {
         let span = fixture.getSut()
 
         let serialization = span.serialize()
-        XCTAssertNil(serialization["data"])
+        XCTAssertEqual(2, (serialization["data"] as? [String: Any])?.count, "Only expected thread.name and thread.id in data.")
         XCTAssertNil(serialization["tag"])
     }
 
@@ -327,7 +357,8 @@ class SentrySpanTests: XCTestCase {
         let sut = SentrySpan(tracer: fixture.tracer, context: SpanContext(operation: "test"))
         sut.setExtra(value: 0, key: "key")
 
-        XCTAssertEqual(["key": 0], sut.data as! [String: Int])
+        let data = sut.data as [String: Any]
+        XCTAssertEqual(0, data["key"] as? Int)
     }
 
     func testSpanWithoutTracer_StartChild_ReturnsNoOpSpan() {
@@ -374,7 +405,8 @@ class SentrySpanTests: XCTestCase {
 
         queue.activate()
         group.wait()
-        XCTAssertEqual(span.data.count, outerLoop * innerLoop)
+        let threadDataItemCount = 2
+        XCTAssertEqual(span.data.count, outerLoop * innerLoop + threadDataItemCount)
     }
 
     func testSpanStatusNames() {

Tests/SentryTests/Transaction/SentryTracerTests.swift

@@ -1097,7 +1097,8 @@ class SentryTracerTests: XCTestCase {
         let sut = fixture.getSut()
         sut.setExtra(value: 0, key: "key")
 
-        XCTAssertEqual(["key": 0], sut.data as! [String: Int])
+        let data = sut.data as [String: Any]
+        XCTAssertEqual(0, data["key"] as? Int)
     }
 
     private func advanceTime(bySeconds: TimeInterval) {

Tests/SentryTests/Transaction/SentryTransactionTests.swift

@@ -139,10 +139,10 @@ class SentryTransactionTests: XCTestCase {
 
         // when
         let serializedTransaction = sut.serialize()
-        let serializedTransactionExtra = try! XCTUnwrap(serializedTransaction["extra"] as? [String: String])
+        let serializedTransactionExtra = try! XCTUnwrap(serializedTransaction["extra"] as? [String: Any])
 
         // then
-        XCTAssertEqual(serializedTransactionExtra, [fixture.testKey: fixture.testValue])
+        XCTAssertEqual(serializedTransactionExtra[fixture.testKey] as! String, fixture.testValue)
     }
 
     func testSerialize_shouldPreserveExtraFromScope() {
@@ -156,10 +156,10 @@ class SentryTransactionTests: XCTestCase {
 
         // when
         let serializedTransaction = sut.serialize()
-        let serializedTransactionExtra = try! XCTUnwrap(serializedTransaction["extra"] as? [String: String])
+        let serializedTransactionExtra = try! XCTUnwrap(serializedTransaction["extra"] as? [String: Any])
 
         // then
-        XCTAssertEqual(serializedTransactionExtra, [fixture.testKey: fixture.testValue])
+        XCTAssertEqual(serializedTransactionExtra[fixture.testKey] as! String, fixture.testValue)
     }
 
     func testSerializeOrigin() throws {