feat: Support collections and arrays in log attribute type inference

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: adinauer

sentry/api/sentry.api

@@ -2813,6 +2813,7 @@ public final class io/sentry/SentryAppStartProfilingOptions$JsonKeys {
 }
 
 public final class io/sentry/SentryAttribute {
+	public static fun arrayAttribute (Ljava/lang/String;Ljava/util/Collection;)Lio/sentry/SentryAttribute;
 	public static fun booleanAttribute (Ljava/lang/String;Ljava/lang/Boolean;)Lio/sentry/SentryAttribute;
 	public static fun doubleAttribute (Ljava/lang/String;Ljava/lang/Double;)Lio/sentry/SentryAttribute;
 	public fun getName ()Ljava/lang/String;
@@ -2824,6 +2825,7 @@ public final class io/sentry/SentryAttribute {
 }
 
 public final class io/sentry/SentryAttributeType : java/lang/Enum {
+	public static final field ARRAY Lio/sentry/SentryAttributeType;
 	public static final field BOOLEAN Lio/sentry/SentryAttributeType;
 	public static final field DOUBLE Lio/sentry/SentryAttributeType;
 	public static final field INTEGER Lio/sentry/SentryAttributeType;

sentry/src/main/java/io/sentry/SentryAttribute.java

@@ -1,5 +1,6 @@
 package io.sentry;
 
+import java.util.Collection;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -54,4 +55,9 @@ private SentryAttribute(
       final @NotNull String name, final @Nullable String value) {
     return new SentryAttribute(name, SentryAttributeType.STRING, value);
   }
+
+  public static @NotNull SentryAttribute arrayAttribute(
+      final @NotNull String name, final @Nullable Collection<?> value) {
+    return new SentryAttribute(name, SentryAttributeType.ARRAY, value);
+  }
 }

sentry/src/main/java/io/sentry/SentryAttributeType.java

@@ -1,6 +1,7 @@
 package io.sentry;
 
 import java.math.BigInteger;
+import java.util.Collection;
 import java.util.Locale;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
@@ -11,7 +12,8 @@ public enum SentryAttributeType {
   STRING,
   BOOLEAN,
   INTEGER,
-  DOUBLE;
+  DOUBLE,
+  ARRAY;
 
   public @NotNull String apiName() {
     return name().toLowerCase(Locale.ROOT);
@@ -33,6 +35,9 @@ public enum SentryAttributeType {
     if (value instanceof Number) {
       return DOUBLE;
     }
+    if (value instanceof Collection || (value != null && value.getClass().isArray())) {
+      return ARRAY;
+    }
     return STRING;
   }
 }

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

@@ -77,4 +77,39 @@ class SentryAttributeTypeTest {
   fun `inferFrom returns STRING for null`() {
     assertEquals(SentryAttributeType.STRING, SentryAttributeType.inferFrom(null))
   }
+
+  @Test
+  fun `inferFrom returns ARRAY for List of Strings`() {
+    assertEquals(SentryAttributeType.ARRAY, SentryAttributeType.inferFrom(listOf("a", "b")))
+  }
+
+  @Test
+  fun `inferFrom returns ARRAY for List of Integers`() {
+    assertEquals(SentryAttributeType.ARRAY, SentryAttributeType.inferFrom(listOf(1, 2, 3)))
+  }
+
+  @Test
+  fun `inferFrom returns ARRAY for Set of Booleans`() {
+    assertEquals(SentryAttributeType.ARRAY, SentryAttributeType.inferFrom(setOf(true, false)))
+  }
+
+  @Test
+  fun `inferFrom returns ARRAY for String array`() {
+    assertEquals(SentryAttributeType.ARRAY, SentryAttributeType.inferFrom(arrayOf("a", "b")))
+  }
+
+  @Test
+  fun `inferFrom returns ARRAY for int array`() {
+    assertEquals(SentryAttributeType.ARRAY, SentryAttributeType.inferFrom(intArrayOf(1, 2)))
+  }
+
+  @Test
+  fun `inferFrom returns ARRAY for empty list`() {
+    assertEquals(SentryAttributeType.ARRAY, SentryAttributeType.inferFrom(emptyList<String>()))
+  }
+
+  @Test
+  fun `inferFrom returns ARRAY for mixed-type list`() {
+    assertEquals(SentryAttributeType.ARRAY, SentryAttributeType.inferFrom(listOf("a", 1, true)))
+  }
 }

sentry/src/test/java/io/sentry/protocol/SentryLogsSerializationTest.kt

@@ -38,6 +38,7 @@ class SentryLogsSerializationTest {
                   "sentry.sdk.name" to
                     SentryLogEventAttributeValue("string", "sentry.java.spring-boot.jakarta"),
                   "sentry.environment" to SentryLogEventAttributeValue("string", "production"),
+                  "custom.array" to SentryLogEventAttributeValue("array", listOf("a", "b")),
                   "sentry.sdk.version" to SentryLogEventAttributeValue("string", "8.11.1"),
                   "sentry.trace.parent_span_id" to
                     SentryLogEventAttributeValue("string", "f28b86350e534671"),

sentry/src/test/resources/json/sentry_logs.json

@@ -20,6 +20,11 @@
           "type": "string",
           "value": "production"
         },
+        "custom.array":
+        {
+          "type": "array",
+          "value": ["a", "b"]
+        },
         "sentry.sdk.version":
         {
           "type": "string",