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Add Name property to OtelMessage to store ChatMessage.AuthorName per OpenTelemetry semantic conventions #6953

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Merged
merged 3 commits into from
Oct 27, 2025
+6 −2
Merged

Add Name property to OtelMessage to store ChatMessage.AuthorName per OpenTelemetry semantic conventions #6953

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ed85c5d
Initial plan
Copilot Oct 23, 2025
019f710
Add Name property to OtelMessage and populate from ChatMessage.Author…
Copilot Oct 23, 2025
9354681
Refactor: integrate AuthorName test into existing ExpectedInformation…
Copilot Oct 23, 2025
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2 changes: 2 additions & 0 deletions src/Libraries/Microsoft.Extensions.AI/ChatCompletion/OpenTelemetryChatClient.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -239,6 +239,7 @@ internal static string SerializeChatMessages(
message.Role == ChatRole.Tool ? "tool" :
message.Role == ChatRole.System || message.Role == new ChatRole("developer") ? "system" :
"user",
Name = message.AuthorName,
};

foreach (AIContent content in message.Contents)
Expand Down Expand Up @@ -595,6 +596,7 @@ private void AddOutputMessagesTags(ChatResponse response, Activity? activity)
private sealed class OtelMessage
{
public string? Role { get; set; }
public string? Name { get; set; }
public List<object> Parts { get; set; } = [];
public string? FinishReason { get; set; }
}
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6 changes: 4 additions & 2 deletions test/Libraries/Microsoft.Extensions.AI.Tests/ChatCompletion/OpenTelemetryChatClientTests.cs
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Expand Up @@ -105,10 +105,10 @@ async static IAsyncEnumerable<ChatResponseUpdate> CallbackAsync(
List<ChatMessage> messages =
[
new(ChatRole.System, "You are a close friend."),
new(ChatRole.User, "Hey!"),
new(ChatRole.User, "Hey!") { AuthorName = "Alice" },
new(ChatRole.Assistant, [new FunctionCallContent("12345", "GetPersonName")]),
new(ChatRole.Tool, [new FunctionResultContent("12345", "John")]),
new(ChatRole.Assistant, "Hey John, what's up?"),
new(ChatRole.Assistant, "Hey John, what's up?") { AuthorName = "BotAssistant" },
new(ChatRole.User, "What's the biggest animal?")
];

Expand Down Expand Up @@ -201,6 +201,7 @@ async static IAsyncEnumerable<ChatResponseUpdate> CallbackAsync(
},
{
"role": "user",
"name": "Alice",
"parts": [
{
"type": "text",
Expand Down Expand Up @@ -230,6 +231,7 @@ async static IAsyncEnumerable<ChatResponseUpdate> CallbackAsync(
},
{
"role": "assistant",
"name": "BotAssistant",
"parts": [
{
"type": "text",
Expand Down
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