From bc5d5cece13162ed7fd25a2952537091b18e17b2 Mon Sep 17 00:00:00 2001
From: Trask Stalnaker <trask.stalnaker@gmail.com>
Date: Tue, 16 Sep 2025 12:06:25 -0700
Subject: [PATCH] Prototype: Complex attributes (Option B)

---
 .../io/opentelemetry/api/common/AttributeKey.java    | 12 ++++++++++++
 .../io/opentelemetry/api/common/AttributeType.java   |  5 ++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/api/all/src/main/java/io/opentelemetry/api/common/AttributeKey.java b/api/all/src/main/java/io/opentelemetry/api/common/AttributeKey.java
index 7d012aa14ca..4ab9b25ccf5 100644
--- a/api/all/src/main/java/io/opentelemetry/api/common/AttributeKey.java
+++ b/api/all/src/main/java/io/opentelemetry/api/common/AttributeKey.java
@@ -70,4 +70,16 @@ static AttributeKey<List<Long>> longArrayKey(String key) {
   static AttributeKey<List<Double>> doubleArrayKey(String key) {
     return InternalAttributeKeyImpl.create(key, AttributeType.DOUBLE_ARRAY);
   }
+
+  static AttributeKey<byte[]> byteArrayKey(String key) {
+    return InternalAttributeKeyImpl.create(key, AttributeType.BYTE_ARRAY);
+  }
+
+  static AttributeKey<List<Value<?>>> valueArrayKey(String key) {
+    return InternalAttributeKeyImpl.create(key, AttributeType.VALUE_ARRAY);
+  }
+
+  static AttributeKey<List<KeyValue>> valueMapKey(String key) {
+    return InternalAttributeKeyImpl.create(key, AttributeType.VALUE_MAP);
+  }
 }
diff --git a/api/all/src/main/java/io/opentelemetry/api/common/AttributeType.java b/api/all/src/main/java/io/opentelemetry/api/common/AttributeType.java
index 1c51e36d644..57dc0e73548 100644
--- a/api/all/src/main/java/io/opentelemetry/api/common/AttributeType.java
+++ b/api/all/src/main/java/io/opentelemetry/api/common/AttributeType.java
@@ -17,5 +17,8 @@ public enum AttributeType {
   STRING_ARRAY,
   BOOLEAN_ARRAY,
   LONG_ARRAY,
-  DOUBLE_ARRAY
+  DOUBLE_ARRAY,
+  BYTE_ARRAY,
+  VALUE_ARRAY,
+  VALUE_MAP
 }