[QA] Replace Calendar.getInstance with System.currentTimeMillis for breadcrumb ctor

CHANGELOG.md

@@ -19,6 +19,7 @@
     - For example, (this is already a default behavior) to redact all `TextView`s and their subclasses (`RadioButton`, `EditText`, etc.): `options.experimental.sessionReplay.addRedactViewClass("android.widget.TextView")`
     - If you're using code obfuscation, adjust your proguard-rules accordingly, so your custom view class name is not minified
 - Fix ensure Application Context is used even when SDK is initialized via Activity Context ([#3669](https://github.com/getsentry/sentry-java/pull/3669))
+- Fix potential ANRs due to `Calendar.getInstance` usage in Breadcrumbs constructor ([#3736](https://github.com/getsentry/sentry-java/pull/3736))
 
 *Breaking changes*:
 

sentry/api/sentry.api

@@ -98,6 +98,7 @@ public final class io/sentry/BaggageHeader {
 
 public final class io/sentry/Breadcrumb : io/sentry/JsonSerializable, io/sentry/JsonUnknown {
 	public fun <init> ()V
+	public fun <init> (J)V
 	public fun <init> (Ljava/lang/String;)V
 	public fun <init> (Ljava/util/Date;)V
 	public static fun debug (Ljava/lang/String;)Lio/sentry/Breadcrumb;

sentry/src/main/java/io/sentry/Breadcrumb.java

@@ -19,8 +19,11 @@
 /** Series of application events */
 public final class Breadcrumb implements JsonUnknown, JsonSerializable {
 
-  /** A timestamp representing when the breadcrumb occurred. */
-  private final @NotNull Date timestamp;
+  /** A timestamp representing when the breadcrumb occurred in milliseconds. */
+  private @Nullable final Long timestampMs;
+
+  /** A timestamp representing when the breadcrumb occurred as java.util.Date. */
+  private @Nullable Date timestamp;
 
   /** If a message is provided, its rendered as text and the whitespace is preserved. */
   private @Nullable String message;
@@ -51,12 +54,20 @@ public final class Breadcrumb implements JsonUnknown, JsonSerializable {
    *
    * @param timestamp the timestamp
    */
+  @SuppressWarnings("JavaUtilDate")
   public Breadcrumb(final @NotNull Date timestamp) {
     this.timestamp = timestamp;
+    this.timestampMs = null;
+  }
+
+  public Breadcrumb(final long timestamp) {
+    this.timestampMs = timestamp;
+    this.timestamp = null;
   }
 
   Breadcrumb(final @NotNull Breadcrumb breadcrumb) {
     this.timestamp = breadcrumb.timestamp;
+    this.timestampMs = breadcrumb.timestampMs;
     this.message = breadcrumb.message;
     this.type = breadcrumb.type;
     this.category = breadcrumb.category;
@@ -504,7 +515,7 @@ public static Breadcrumb fromMap(
 
   /** Breadcrumb ctor */
   public Breadcrumb() {
-    this(DateUtils.getCurrentDateTime());
+    this(System.currentTimeMillis());
   }
 
   /**
@@ -518,13 +529,20 @@ public Breadcrumb(@Nullable String message) {
   }
 
   /**
-   * Returns the Breadcrumb's timestamp
+   * Returns the Breadcrumb's timestamp as java.util.Date
    *
    * @return the timestamp
    */
-  @SuppressWarnings({"JdkObsolete", "JavaUtilDate"})
+  @SuppressWarnings("JavaUtilDate")
   public @NotNull Date getTimestamp() {
-    return (Date) timestamp.clone();
+    if (timestamp != null) {
+      return (Date) timestamp.clone();
+    } else if (timestampMs != null) {
+      // we memoize it here into timestamp to avoid instantiating Calendar again and again
+      timestamp = DateUtils.getDateTime(timestampMs);
+      return timestamp;
+    }
+    throw new IllegalStateException("No timestamp set for breadcrumb");
   }
 
   /**
@@ -664,7 +682,7 @@ public boolean equals(Object o) {
     if (this == o) return true;
     if (o == null || getClass() != o.getClass()) return false;
     Breadcrumb that = (Breadcrumb) o;
-    return timestamp.getTime() == that.timestamp.getTime()
+    return getTimestamp().getTime() == that.getTimestamp().getTime()
         && Objects.equals(message, that.message)
         && Objects.equals(type, that.type)
         && Objects.equals(category, that.category)
@@ -704,7 +722,7 @@ public static final class JsonKeys {
   public void serialize(final @NotNull ObjectWriter writer, final @NotNull ILogger logger)
       throws IOException {
     writer.beginObject();
-    writer.name(JsonKeys.TIMESTAMP).value(logger, timestamp);
+    writer.name(JsonKeys.TIMESTAMP).value(logger, getTimestamp());
     if (message != null) {
       writer.name(JsonKeys.MESSAGE).value(message);
     }

sentry/src/test/java/io/sentry/BreadcrumbTest.kt

@@ -1,5 +1,6 @@
 package io.sentry
 
+import java.util.Date
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
@@ -100,6 +101,12 @@ class BreadcrumbTest {
         assertNotNull(breadcrumb.timestamp)
     }
 
+    @Test
+    fun `breadcrumb can be created with Date timestamp`() {
+        val breadcrumb = Breadcrumb(Date(123L))
+        assertEquals(123L, breadcrumb.timestamp.time)
+    }
+
     @Test
     fun `breadcrumb takes message on ctor`() {
         val breadcrumb = Breadcrumb("this is a test")