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fix: use new AI protocol format for friendly errors #122

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merged 1 commit into from
Sep 12, 2024
Merged

fix: use new AI protocol format for friendly errors #122

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14 changes: 9 additions & 5 deletions apps/nextjs/src/app/api/chat/errorHandling.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,10 @@ import { RateLimitExceededError } from "@oakai/core/src/utils/rateLimiting/userB
import { PrismaClientWithAccelerate } from "@oakai/db";
import invariant from "tiny-invariant";

import { consumeStream } from "@/utils/testHelpers/consumeStream";
import {
consumeStream,
extractStreamMessage,
} from "@/utils/testHelpers/consumeStream";

import { handleChatException } from "./errorHandling";

Expand Down Expand Up @@ -35,7 +38,8 @@ describe("handleChatException", () => {
expect(response.status).toBe(200);

invariant(response.body instanceof ReadableStream);
const message = JSON.parse(await consumeStream(response.body));
const message = extractStreamMessage(await consumeStream(response.body));

expect(message).toEqual({
type: "error",
value: "Threat detected",
Expand Down Expand Up @@ -84,8 +88,8 @@ describe("handleChatException", () => {
expect(response.status).toBe(200);

const consumed = await consumeStream(response.body as ReadableStream);
expect(consumed).toMatch(/^\{/);
const message = JSON.parse(consumed);
const message = extractStreamMessage(consumed);

expect(message).toEqual({
type: "error",
value: "Rate limit exceeded",
Expand All @@ -110,7 +114,7 @@ describe("handleChatException", () => {

expect(response.status).toBe(200);

const message = JSON.parse(
const message = extractStreamMessage(
await consumeStream(response.body as ReadableStream),
);
expect(message).toEqual({
Expand Down
4 changes: 3 additions & 1 deletion apps/nextjs/src/app/api/chat/protocol.ts
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Expand Up @@ -5,7 +5,9 @@ import {
import { StreamingTextResponse } from "ai";

export function streamingJSON(message: ErrorDocument | ActionDocument) {
const errorMessage = JSON.stringify(message);
const jsonContent = JSON.stringify(message);
const errorMessage = `0:"${jsonContent.replace(/"/g, '\\"')}"`;
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const errorEncoder = new TextEncoder();

return new StreamingTextResponse(
Expand Down
9 changes: 9 additions & 0 deletions apps/nextjs/src/utils/testHelpers/consumeStream.ts
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Expand Up @@ -14,3 +14,12 @@ export async function consumeStream(

return result;
}

export function extractStreamMessage(streamedText: string) {
const content = streamedText.match(/0:"(.*)"/);
if (!content?.[1]) {
throw new Error("No message found in streamed text");
}
const strippedContent = content[1].replace(/\\"/g, '"');
return JSON.parse(strippedContent);
}
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