mirror of
https://github.com/BerriAI/litellm.git
synced 2026-09-21 00:21:49 +00:00
9c0a840122
Split the issue body only on headings the two forms actually emit, keep the first value when a heading repeats, cap each field on its own so a long config cannot push the repro out of the model's view, and only treat comments from github-actions[bot] as the template notice. The claude code keyword label the deleted component labeler used to add gets its own small workflow.
365 lines
14 KiB
TypeScript
365 lines
14 KiB
TypeScript
#!/usr/bin/env bun
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import { githubApi, type GitHubApi } from "./auto-close-duplicates";
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import { MANIFEST, type Manifest } from "./issue-labels";
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declare const process: { readonly env: Readonly<Record<string, string | undefined>> };
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declare const Bun: {
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readonly file: (path: string) => { readonly text: () => Promise<string>; readonly json: () => Promise<unknown> };
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};
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export interface IssueForClassification {
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readonly number: number;
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readonly title: string;
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readonly body: string | null;
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readonly author_association: string;
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readonly pull_request?: unknown;
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}
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export type Template = "bug" | "feature";
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export type Gate =
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readonly kind: "pass";
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readonly template: Template;
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readonly domainHint: string | null;
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readonly version: string | null;
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}
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| { readonly kind: "template"; readonly template: Template; readonly missing: readonly string[] };
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export interface Classification {
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readonly gate: "pass";
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readonly domain: string;
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readonly provider: string | null;
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readonly kind: string;
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readonly priority: string;
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readonly lift: string;
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readonly route: string | null;
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readonly version: string | null;
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readonly needs: readonly string[];
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readonly reason: string;
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}
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export interface GateVerdict {
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readonly gate: "template";
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readonly template: Template;
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readonly missing: readonly string[];
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}
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export type Verdict = Classification | GateVerdict;
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export type ParsedClassification =
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| { readonly kind: "classification"; readonly classification: Classification }
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| { readonly kind: "invalid"; readonly reason: string };
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export interface ChatMessage {
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readonly role: "system" | "user";
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readonly content: string;
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}
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export interface ChatRequest {
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readonly model: string;
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readonly messages: readonly ChatMessage[];
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readonly response_format: {
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readonly type: "json_schema";
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readonly json_schema: { readonly name: string; readonly strict: true; readonly schema: object };
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};
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}
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export interface LlmClient {
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readonly complete: (request: ChatRequest) => Promise<string>;
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}
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export interface ClassifyConfig {
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readonly repo: string;
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readonly issueNumber: number;
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readonly model: string;
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}
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export interface Schema {
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readonly properties: Readonly<Record<string, { readonly enum?: readonly (string | null)[] }>>;
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}
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export const BUG_SECTIONS = ["Description", "Config", "LiteLLM Version", "Steps to Repro"] as const;
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export const FEATURE_SECTIONS = ["The Feature", "User Flow", "How far you got"] as const;
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export const DOMAIN_HEADING = "Which part of LiteLLM is this about?";
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export const VERSION_HEADING = "LiteLLM Version";
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export const DEPLOYMENT_HEADING = "How are you deploying?";
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export const NOISE_HEADINGS = [
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"Check for existing issues",
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"LiteLLM is hiring a founding backend engineer, are you interested in joining us and shipping to all our users?",
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"Twitter / LinkedIn details",
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] as const;
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export const FORM_HEADINGS: readonly string[] = [
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...BUG_SECTIONS,
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...FEATURE_SECTIONS,
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DOMAIN_HEADING,
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DEPLOYMENT_HEADING,
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...NOISE_HEADINGS,
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];
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export const MIN_SECTION_CHARS = 20;
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export const SECTION_CAP_CHARS = 4000;
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export const BODY_CAP_CHARS = 8000;
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export const MAINTAINER_ASSOCIATIONS: readonly string[] = ["OWNER", "MEMBER", "COLLABORATOR"];
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const EMPTY_FIELD = "_No response_";
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const NOT_SURE = "Not sure";
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type Block = readonly [heading: string, lines: readonly string[]];
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export function sections(body: string): ReadonlyMap<string, string> {
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const blocks = body.split("\n").reduce<readonly Block[]>((acc, line) => {
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const heading = /^### (.+?)\s*$/.exec(line)?.[1];
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const opensField = heading !== undefined && FORM_HEADINGS.includes(heading) && !acc.some(([name]) => name === heading);
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if (opensField) {
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return [...acc, [heading, []]];
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}
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const current = acc.at(-1);
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return current === undefined ? acc : [...acc.slice(0, -1), [current[0], [...current[1], line]]];
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}, []);
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return new Map(blocks.map(([heading, lines]) => [heading, lines.join("\n").trim()]));
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}
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export function templateFor(title: string, found: ReadonlyMap<string, string>): Template {
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if (/^\s*\[bug\]/i.test(title)) {
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return "bug";
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}
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if (/^\s*\[feature\]/i.test(title)) {
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return "feature";
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}
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return FEATURE_SECTIONS.some((heading) => found.has(heading)) ? "feature" : "bug";
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}
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function hasSubstance(heading: string, text: string | undefined): boolean {
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if (text === undefined || text === "" || text === EMPTY_FIELD) {
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return false;
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}
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if (heading === VERSION_HEADING) {
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return /\d+\.\d+/.test(text);
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}
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return text.length >= MIN_SECTION_CHARS;
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}
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export function gate(issue: Pick<IssueForClassification, "title" | "body" | "author_association">): Gate {
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const found = sections(issue.body ?? "");
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const template = templateFor(issue.title, found);
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const required: readonly string[] = template === "bug" ? BUG_SECTIONS : FEATURE_SECTIONS;
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const missing = required.filter((heading) => !hasSubstance(heading, found.get(heading)));
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if (missing.length > 0 && !MAINTAINER_ASSOCIATIONS.includes(issue.author_association)) {
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return { kind: "template", template, missing };
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}
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const hint = found.get(DOMAIN_HEADING);
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const version = found.get(VERSION_HEADING);
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return {
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kind: "pass",
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template,
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domainHint: hint === undefined || hint === EMPTY_FIELD || hint === NOT_SURE ? null : hint,
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version: hasSubstance(VERSION_HEADING, version) ? (version ?? null) : null,
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};
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}
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const clip = (text: string, cap: number, what: string): string =>
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text.length > cap ? `${text.slice(0, cap)}\n\n[${what} truncated at ${cap} characters]` : text;
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export function issueText(body: string): string {
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const found = sections(body);
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if (found.size === 0) {
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return clip(body, BODY_CAP_CHARS, "body");
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}
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return [...found]
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.filter(([heading]) => !NOISE_HEADINGS.some((noise) => noise === heading))
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.map(([heading, text]) => `### ${heading}\n\n${clip(text, SECTION_CAP_CHARS, "section")}`)
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.join("\n\n");
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}
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export function userMessage(issue: Pick<IssueForClassification, "title" | "body">, passed: Gate & { kind: "pass" }): string {
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const capped = issueText(issue.body ?? "");
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const versionLine = passed.version === null ? "" : `\nLiteLLM Version (from the template): ${passed.version}`;
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return [
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`Title: ${issue.title}`,
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`Template: ${passed.template}`,
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`Reporter's pick from the domain dropdown: ${passed.domainHint ?? "none"}${versionLine}`,
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"",
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capped,
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].join("\n");
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}
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export function buildRequest(
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model: string,
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prompt: string,
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schema: object,
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issue: Pick<IssueForClassification, "title" | "body">,
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passed: Gate & { kind: "pass" },
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): ChatRequest {
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return {
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model,
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messages: [
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{ role: "system", content: prompt },
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{ role: "user", content: userMessage(issue, passed) },
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],
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response_format: { type: "json_schema", json_schema: { name: "issue_classification", strict: true, schema } },
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};
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}
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export function routesOf(schema: Schema): readonly string[] {
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return (schema.properties.route?.enum ?? []).filter((value): value is string => typeof value === "string");
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}
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const invalid = (reason: string): ParsedClassification => ({ kind: "invalid", reason });
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const parseJson = (raw: string): unknown => {
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try {
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return JSON.parse(raw);
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} catch {
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return undefined;
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}
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};
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function enumValue(
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fields: Readonly<Record<string, unknown>>,
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field: string,
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allowed: readonly string[],
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): { readonly ok: true; readonly value: string } | { readonly ok: false; readonly reason: string } {
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const value = fields[field];
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if (typeof value !== "string" || !allowed.includes(value)) {
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return { ok: false, reason: `${field} must be one of ${allowed.join(", ")}, got ${JSON.stringify(value)}` };
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}
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return { ok: true, value };
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}
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export function parseClassification(raw: string, manifest: Manifest, routes: readonly string[]): ParsedClassification {
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const parsed = parseJson(raw);
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if (typeof parsed !== "object" || parsed === null || Array.isArray(parsed)) {
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return invalid("the model did not return a JSON object");
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}
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const fields = parsed as Readonly<Record<string, unknown>>;
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const domain = enumValue(fields, "domain", Object.keys(manifest.domain));
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const kind = enumValue(fields, "kind", Object.keys(manifest.kind));
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const priority = enumValue(fields, "priority", Object.keys(manifest.priority));
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const lift = enumValue(fields, "lift", Object.keys(manifest.lift));
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const provider = fields.provider === null ? { ok: true as const, value: null } : enumValue(fields, "provider", Object.keys(manifest.provider));
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const route = fields.route === null ? { ok: true as const, value: null } : enumValue(fields, "route", routes);
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const failed = [domain, kind, priority, lift, provider, route].find((result) => !result.ok);
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if (failed !== undefined && !failed.ok) {
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return invalid(failed.reason);
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}
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if (!domain.ok || !kind.ok || !priority.ok || !lift.ok || !provider.ok || !route.ok) {
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return invalid("unreachable");
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}
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const { version, needs_repro: needsRepro, reason } = fields;
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if (version !== null && (typeof version !== "string" || version.trim() === "")) {
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return invalid(`version must be a non-empty string or null, got ${JSON.stringify(version)}`);
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}
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if (typeof needsRepro !== "boolean") {
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return invalid(`needs_repro must be a boolean, got ${JSON.stringify(needsRepro)}`);
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}
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if (typeof reason !== "string" || reason.trim() === "") {
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return invalid("reason must be a non-empty string");
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}
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const isBug = kind.value === "bug";
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return {
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kind: "classification",
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classification: {
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gate: "pass",
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domain: domain.value,
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provider: provider.value,
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kind: kind.value,
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priority: isBug ? priority.value : "p3",
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lift: lift.value,
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route: route.value,
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version: version as string | null,
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needs: [...(version === null ? ["version"] : []), ...(isBug && needsRepro ? ["repro"] : [])],
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reason,
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},
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};
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}
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export async function classifyIssue(
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api: GitHubApi,
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llm: LlmClient,
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config: ClassifyConfig,
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prompt: string,
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schema: Schema,
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): Promise<Verdict> {
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const issue = await api.request<IssueForClassification>("GET", `/repos/${config.repo}/issues/${config.issueNumber}`);
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if (issue.pull_request !== undefined) {
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throw new Error(`#${config.issueNumber} is a pull request`);
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}
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const passed = gate(issue);
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if (passed.kind === "template") {
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return { gate: "template", template: passed.template, missing: passed.missing };
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}
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const raw = await llm.complete(buildRequest(config.model, prompt, schema, issue, passed));
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const parsed = parseClassification(raw, MANIFEST, routesOf(schema));
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if (parsed.kind === "invalid") {
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throw new Error(`the model's answer failed validation: ${parsed.reason}\n${raw}`);
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}
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return parsed.classification;
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}
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export function litellmClient(apiBase: string, apiKey: string): LlmClient {
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return {
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complete: async (request: ChatRequest): Promise<string> => {
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const response = await fetch(`${apiBase.replace(/\/+$/, "")}/v1/chat/completions`, {
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method: "POST",
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headers: { Authorization: `Bearer ${apiKey}`, "Content-Type": "application/json" },
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body: JSON.stringify(request),
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});
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if (!response.ok) {
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throw new Error(`chat completion failed: ${response.status} ${response.statusText}`);
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}
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const payload = (await response.json()) as {
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readonly choices?: readonly {
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readonly finish_reason?: string;
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readonly message?: { readonly content?: string | null; readonly refusal?: string | null };
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}[];
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};
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const choice = payload.choices?.[0];
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if (choice?.message?.refusal) {
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throw new Error(`the model refused: ${choice.message.refusal}`);
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}
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if (choice?.finish_reason === "length") {
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throw new Error("the model ran out of output tokens before finishing the JSON");
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}
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const content = choice?.message?.content;
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if (typeof content !== "string" || content === "") {
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throw new Error("the model returned no content");
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}
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return content;
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},
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};
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}
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export function readConfig(
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env: Readonly<Record<string, string | undefined>>,
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): ClassifyConfig & { readonly token: string; readonly apiBase: string; readonly apiKey: string } {
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const token = env.GITHUB_TOKEN;
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const repo = env.GITHUB_REPOSITORY;
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if (!token || !repo || !/^[\w.-]+\/[\w.-]+$/.test(repo)) {
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throw new Error("GITHUB_TOKEN and GITHUB_REPOSITORY (owner/repo) are required");
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}
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const issueNumber = Number(env.ISSUE_NUMBER);
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if (!Number.isInteger(issueNumber) || issueNumber <= 0) {
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throw new Error(`ISSUE_NUMBER must be a positive integer, got "${env.ISSUE_NUMBER}"`);
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}
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const apiBase = env.LITELLM_API_BASE;
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const apiKey = env.LITELLM_API_KEY;
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const model = env.ISSUE_CLASSIFIER_MODEL;
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if (!apiBase || !/^https?:\/\//.test(apiBase)) {
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throw new Error("LITELLM_API_BASE must be the URL of a LiteLLM proxy, e.g. https://llm.example.com");
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}
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if (!apiKey) {
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throw new Error("LITELLM_API_KEY is required");
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}
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if (!model) {
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throw new Error("ISSUE_CLASSIFIER_MODEL must name a model the LiteLLM deployment serves");
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}
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return { token, repo, issueNumber, apiBase, apiKey, model };
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}
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if (import.meta.main) {
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const { token, apiBase, apiKey, ...config } = readConfig(process.env);
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const prompt = await Bun.file(`${import.meta.dir}/../.github/prompts/issue-classifier.md`).text();
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const schema = (await Bun.file(`${import.meta.dir}/../.github/prompts/issue-classifier.schema.json`).json()) as Schema;
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const verdict = await classifyIssue(githubApi(token), litellmClient(apiBase, apiKey), config, prompt, schema);
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console.log(JSON.stringify(verdict));
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}
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