Files
OpenPipe-llm/src/server/utils/getChatCompletion.ts
2023-07-03 20:22:38 -07:00

75 lines
2.2 KiB
TypeScript

/* eslint-disable @typescript-eslint/no-unsafe-call */
import { isObject } from "lodash";
import { type JSONSerializable } from "../types";
import { Prisma } from "@prisma/client";
import { streamChatCompletion } from "./openai";
import { wsConnection } from "~/utils/wsConnection";
import { type ChatCompletion, type CompletionCreateParams } from "openai/resources/chat";
type CompletionResponse = {
output: Prisma.InputJsonValue | typeof Prisma.JsonNull;
statusCode: number;
errorMessage: string | null;
timeToComplete: number
};
export async function getChatCompletion(
payload: JSONSerializable,
apiKey: string,
channel?: string,
): Promise<CompletionResponse> {
const start = Date.now();
const response = await fetch("https://api.openai.com/v1/chat/completions", {
method: "POST",
headers: {
"Content-Type": "application/json",
Authorization: `Bearer ${apiKey}`,
},
body: JSON.stringify(payload),
});
const resp: CompletionResponse = {
output: Prisma.JsonNull,
errorMessage: null,
statusCode: response.status,
timeToComplete: 0
};
try {
if (channel) {
const completion = streamChatCompletion(payload as unknown as CompletionCreateParams);
let finalOutput: ChatCompletion | null = null;
await (async () => {
for await (const partialCompletion of completion) {
finalOutput = partialCompletion
wsConnection.emit("message", { channel, payload: partialCompletion });
}
})().catch((err) => console.error(err));
resp.output = finalOutput as unknown as Prisma.InputJsonValue;
resp.timeToComplete = Date.now() - start;
} else {
resp.timeToComplete = Date.now() - start;
resp.output = await response.json();
}
if (!response.ok) {
// If it's an object, try to get the error message
if (
isObject(resp.output) &&
"error" in resp.output &&
isObject(resp.output.error) &&
"message" in resp.output.error
) {
resp.errorMessage = resp.output.error.message?.toString() ?? "Unknown error";
}
}
} catch (e) {
console.error(e);
if (response.ok) {
resp.errorMessage = "Failed to parse response";
}
}
return resp;
}