Fix Ensure app start type is set, even when ActivityLifecycleIntegration is not running

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Fixes
+
+- Fix Ensure app start type is set, even when ActivityLifecycleIntegration is not running ([#4216](https://github.com/getsentry/sentry-java/pull/4216))
+
 ## 7.22.0
 
 ### Fixes

sentry-android-core/src/main/java/io/sentry/android/core/SentryPerformanceProvider.java

@@ -9,11 +9,11 @@
 import android.content.pm.ProviderInfo;
 import android.net.Uri;
 import android.os.Build;
+import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Process;
 import android.os.SystemClock;
-import androidx.annotation.NonNull;
 import io.sentry.ILogger;
 import io.sentry.ITransactionProfiler;
 import io.sentry.JsonSerializer;
@@ -33,6 +33,7 @@
 import java.io.FileNotFoundException;
 import java.io.InputStreamReader;
 import java.io.Reader;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
@@ -204,8 +205,32 @@ private void onAppLaunched(
 
     activityCallback =
         new ActivityLifecycleCallbacksAdapter() {
+
+          @Override
+          public void onActivityCreated(
+              @NotNull Activity activity, @Nullable Bundle savedInstanceState) {
+            if (appStartMetrics.getAppStartType() == AppStartMetrics.AppStartType.UNKNOWN) {
+              // We consider pre-loaded application loads as warm starts
+              // This usually happens e.g. due to BroadcastReceivers triggering
+              // Application.onCreate only, but no Activity.onCreate
+              final long now = SystemClock.uptimeMillis();
+              final long durationMs =
+                  now - appStartMetrics.getAppStartTimeSpan().getStartUptimeMs();
+              if (durationMs > TimeUnit.SECONDS.toMillis(1)) {
+                appStartMetrics.restartAppStart(now);
+                appStartMetrics.setAppStartType(AppStartMetrics.AppStartType.WARM);
+              } else {
+                // Otherwise a non-null bundle determines the behavior
+                appStartMetrics.setAppStartType(
+                    savedInstanceState == null
+                        ? AppStartMetrics.AppStartType.COLD
+                        : AppStartMetrics.AppStartType.WARM);
+              }
+            }
+          }
+
           @Override
-          public void onActivityStarted(@NonNull Activity activity) {
+          public void onActivityStarted(@NotNull Activity activity) {
             if (firstDrawDone.get()) {
               return;
             }

sentry-android-core/src/test/java/io/sentry/android/core/SentryPerformanceProviderTest.kt

@@ -1,8 +1,11 @@
 package io.sentry.android.core
 
+import android.app.Activity
 import android.app.Application
+import android.app.Application.ActivityLifecycleCallbacks
 import android.content.pm.ProviderInfo
 import android.os.Build
+import android.os.Bundle
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import io.sentry.ILogger
 import io.sentry.JsonSerializer
@@ -26,6 +29,7 @@ import java.nio.file.Files
 import kotlin.test.AfterTest
 import kotlin.test.BeforeTest
 import kotlin.test.Test
+import kotlin.test.assertEquals
 import kotlin.test.assertFailsWith
 import kotlin.test.assertFalse
 import kotlin.test.assertNotNull
@@ -48,6 +52,7 @@ class SentryPerformanceProviderTest {
         val providerInfo = ProviderInfo()
         val logger = mock<ILogger>()
         lateinit var configFile: File
+        var activityLifecycleCallback: ActivityLifecycleCallbacks? = null
 
         fun getSut(sdkVersion: Int = Build.VERSION_CODES.S, authority: String = AUTHORITY, handleFile: ((config: File) -> Unit)? = null): SentryPerformanceProvider {
             val buildInfoProvider: BuildInfoProvider = mock()
@@ -56,7 +61,10 @@ class SentryPerformanceProviderTest {
             whenever(mockContext.applicationContext).thenReturn(mockContext)
             configFile = File(sentryCache, Sentry.APP_START_PROFILING_CONFIG_FILE_NAME)
             handleFile?.invoke(configFile)
-
+            whenever(mockContext.registerActivityLifecycleCallbacks(any())).then {
+                activityLifecycleCallback = it.arguments[0] as ActivityLifecycleCallbacks
+                return@then Unit
+            }
             providerInfo.authority = authority
             return SentryPerformanceProvider(logger, buildInfoProvider).apply {
                 attachInfo(mockContext, providerInfo)
@@ -232,6 +240,73 @@ class SentryPerformanceProviderTest {
         assertFalse(AppStartMetrics.getInstance().appStartProfiler!!.isRunning)
     }
 
+    @Test
+    fun `Sets app launch type to cold`() {
+        val provider = fixture.getSut()
+        val activity = mock<Activity>()
+        provider.onCreate()
+
+        assertEquals(AppStartMetrics.AppStartType.UNKNOWN, AppStartMetrics.getInstance().appStartType)
+
+        // when the first activity has no bundle
+        fixture.activityLifecycleCallback!!.onActivityCreated(activity, null)
+
+        // then the app start is considered cold
+        assertEquals(AppStartMetrics.AppStartType.COLD, AppStartMetrics.getInstance().appStartType)
+
+        // when any subsequent activity launches
+        fixture.activityLifecycleCallback!!.onActivityCreated(activity, mock<Bundle>())
+
+        // then the app start is still considered cold
+        assertEquals(AppStartMetrics.AppStartType.COLD, AppStartMetrics.getInstance().appStartType)
+    }
+
+    @Test
+    fun `Sets app launch type to warm if process init is too old`() {
+        val provider = fixture.getSut()
+        val activity = mock<Activity>()
+        provider.onCreate()
+
+        assertEquals(AppStartMetrics.AppStartType.UNKNOWN, AppStartMetrics.getInstance().appStartType)
+
+        AppStartMetrics.getInstance().appStartTimeSpan.setStartedAt(
+            AppStartMetrics.getInstance().appStartTimeSpan.startUptimeMs - 20000
+        )
+
+        // when the first activity has no bundle
+        fixture.activityLifecycleCallback!!.onActivityCreated(activity, null)
+
+        // then the app start is considered warm
+        assertEquals(AppStartMetrics.AppStartType.WARM, AppStartMetrics.getInstance().appStartType)
+
+        // when any subsequent activity launches
+        fixture.activityLifecycleCallback!!.onActivityCreated(activity, mock<Bundle>())
+
+        // then the app start is still considered warm
+        assertEquals(AppStartMetrics.AppStartType.WARM, AppStartMetrics.getInstance().appStartType)
+    }
+
+    @Test
+    fun `Sets app launch type to warm`() {
+        val provider = fixture.getSut()
+        val activity = mock<Activity>()
+        provider.onCreate()
+
+        assertEquals(AppStartMetrics.AppStartType.UNKNOWN, AppStartMetrics.getInstance().appStartType)
+
+        // when the first activity has a bundle
+        fixture.activityLifecycleCallback!!.onActivityCreated(activity, mock<Bundle>())
+
+        // then the app start is considered WARM
+        assertEquals(AppStartMetrics.AppStartType.WARM, AppStartMetrics.getInstance().appStartType)
+
+        // when any subsequent activity launches
+        fixture.activityLifecycleCallback!!.onActivityCreated(activity, null)
+
+        // then the app start is still considered warm
+        assertEquals(AppStartMetrics.AppStartType.WARM, AppStartMetrics.getInstance().appStartType)
+    }
+
     private fun writeConfig(
         configFile: File,
         profilingEnabled: Boolean = true,