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fix(ai-sdk): log AI SDK v7 inline file data as attachments #2751

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Paulo Martins (pmartinsdev) wants to merge 1 commit into from
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fix(ai-sdk): log AI SDK v7 inline file data as attachments #2751

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5 changes: 5 additions & 0 deletions .changeset/ai-sdk-v7-inline-file-attachments.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"braintrust": patch
---

fix(ai-sdk): log AI SDK v7 inline file data as attachments instead of copying the bytes into the span
23 changes: 23 additions & 0 deletions js/src/instrumentation/plugins/ai-sdk-plugin.test.ts
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Expand Up @@ -32,6 +32,7 @@ import {
BRAINTRUST_AI_SDK_V7_OPERATION_KEY as AI_SDK_V7_OPERATION_KEY,
} from "../../vendor-sdk-types/ai-sdk-v7-telemetry";
import { serializeAISDKToolsForLogging } from "../../wrappers/ai-sdk/tool-serialization";
import { Attachment } from "../../logger";
import {
AISDKPlugin,
DEFAULT_DENY_OUTPUT_PATHS,
Expand Down Expand Up @@ -221,6 +222,28 @@ describe("AISDKPlugin", () => {
expect(processed.model).not.toHaveProperty("doStream");
expect(processed.model.config).not.toHaveProperty("url");
});

it("logs AI SDK v7 inline file data as attachments", () => {
const processed = processAISDKCallInput({
prompt: [
{
role: "user",
content: [
{
type: "file",
mediaType: "image/png",
data: {
type: "data",
data: new Uint8Array([137, 80, 78, 71, 13, 10, 26, 10]),
},
},
],
},
],
}).input as Record<string, any>;

expect(processed.prompt[0].content[0].data).toBeInstanceOf(Attachment);
});
});

describe("enable/disable", () => {
Expand Down
6 changes: 5 additions & 1 deletion js/src/instrumentation/plugins/ai-sdk-plugin.ts
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Expand Up @@ -1939,7 +1939,7 @@ const processContentPart = (part: any): any => {
(part.mimeType || part.mediaType)
) {
const fileAttachment = convertDataToAttachment(
part.data,
unwrapInlineFileData(part.data),
part.mimeType || part.mediaType,
part.name || part.filename,
);
Expand Down Expand Up @@ -1972,6 +1972,10 @@ const processContentPart = (part: any): any => {
return part;
};

// AI SDK v7 tags inline file bytes as { type: "data", data }.
const unwrapInlineFileData = (data: unknown): unknown =>
isObject(data) && data.type === "data" && "data" in data ? data.data : data;

const convertImageToAttachment = (
image: any,
explicitMimeType?: string,
Expand Down