mirror of
https://github.com/sune-org/ORP.git
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391 lines
16 KiB
JavaScript
391 lines
16 KiB
JavaScript
import OpenAI from 'openai';
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import Anthropic from '@anthropic-ai/sdk';
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const TTL_MS = 20 * 60 * 1000;
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const BATCH_MS = 800;
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const BATCH_BYTES = 3400;
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const HB_INTERVAL_MS = 3000;
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const MAX_RUN_MS = 7 * 60 * 1000;
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const CORS_HEADERS = {
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'Access-Control-Allow-Origin': '*',
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'Access-Control-Allow-Methods': 'GET, OPTIONS',
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'Access-Control-Allow-Headers': 'Content-Type, Authorization',
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'Access-Control-Max-Age': '86400',
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};
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const withCORS = (resp) => {
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const headers = new Headers(resp.headers);
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Object.entries(CORS_HEADERS).forEach(([k, v]) => headers.set(k, v));
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return new Response(resp.body, { ...resp, headers });
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};
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export default {
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async fetch(req, env) {
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const url = new URL(req.url);
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const method = req.method.toUpperCase();
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if (method === 'OPTIONS') return new Response(null, { status: 204, headers: CORS_HEADERS });
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if ((h => h !== 'sune.planetrenox.com' && h !== 'sune.chat' && !h.endsWith('.github.io'))(new URL(req.headers.get('Origin') || 'null').hostname)) {
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return withCORS(new Response('Forbidden', { status: 403 }));
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}
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if (url.pathname === '/ws') {
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const isGet = method === 'GET';
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const isWs = req.headers.get('Upgrade') === 'websocket';
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if (!isGet && !isWs) return withCORS(new Response('method not allowed', { status: 405 }));
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const uid = (url.searchParams.get('uid') || '').slice(0, 64).replace(/[^a-zA-Z0-9_-]/g, '');
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if (!uid) return withCORS(new Response('uid is required', { status: 400 }));
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const id = env.MY_DURABLE_OBJECT.idFromName(uid);
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const stub = env.MY_DURABLE_OBJECT.get(id);
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const resp = await stub.fetch(req);
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return isWs ? resp : withCORS(resp);
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}
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return withCORS(new Response('not found', { status: 404 }));
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}
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}
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export class MyDurableObject {
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constructor(state, env) {
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this.state = state;
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this.env = env;
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this.sockets = new Set();
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this.reset();
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}
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reset() {
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this.rid = null;
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this.buffer = [];
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this.seq = -1;
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this.phase = 'idle';
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this.error = null;
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this.controller = null;
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this.oaStream = null;
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this.pending = '';
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this.flushTimer = null;
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this.lastSavedAt = 0;
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this.lastFlushedAt = 0;
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this.hbActive = false;
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this.age = 0;
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}
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corsJSON(obj, status = 200) {
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return new Response(JSON.stringify(obj), { status, headers: { 'Content-Type': 'application/json', 'Cache-Control': 'no-store', ...CORS_HEADERS } });
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}
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send(ws, obj) { try { ws.send(JSON.stringify(obj)); } catch {} }
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bcast(obj) { this.sockets.forEach(ws => this.send(ws, obj)); }
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async autopsy() {
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if (this.rid) return;
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const snap = await this.state.storage.get('run').catch(() => null);
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if (!snap || (Date.now() - (snap.savedAt || 0) >= TTL_MS)) {
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if (snap) await this.state.storage.delete('run').catch(() => {});
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return;
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}
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this.rid = snap.rid || null;
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this.buffer = Array.isArray(snap.buffer) ? snap.buffer : [];
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this.seq = Number.isFinite(+snap.seq) ? +snap.seq : -1;
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this.age = snap.age || 0;
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this.phase = snap.phase || 'done';
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this.error = snap.error || null;
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this.pending = '';
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if (this.phase === 'running') {
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this.phase = 'evicted';
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this.error = 'The run was interrupted due to system eviction.';
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this.saveSnapshot();
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await this.stopHeartbeat();
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}
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}
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saveSnapshot() {
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this.lastSavedAt = Date.now();
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const snapshot = { rid: this.rid, buffer: this.buffer, seq: this.seq, age: this.age, phase: this.phase, error: this.error, savedAt: this.lastSavedAt };
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return this.state.storage.put('run', snapshot).catch(() => {});
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}
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replay(ws, after) {
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this.buffer.forEach(it => { if (it.seq > after) this.send(ws, { type: 'delta', seq: it.seq, text: it.text }); });
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if (this.phase === 'done') this.send(ws, { type: 'done' });
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else if (['error', 'evicted'].includes(this.phase)) this.send(ws, { type: 'err', message: this.error || 'The run was terminated unexpectedly.' });
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}
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flush(force = false) {
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if (this.flushTimer) { clearTimeout(this.flushTimer); this.flushTimer = null; }
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if (this.pending) {
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this.buffer.push({ seq: ++this.seq, text: this.pending });
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this.bcast({ type: 'delta', seq: this.seq, text: this.pending });
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this.pending = '';
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this.lastFlushedAt = Date.now();
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}
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if (force) this.saveSnapshot();
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}
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queueDelta(text) {
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if (!text) return;
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this.pending += text;
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if (this.pending.length >= BATCH_BYTES) this.flush(false);
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else if (!this.flushTimer) this.flushTimer = setTimeout(() => this.flush(false), BATCH_MS);
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}
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async fetch(req) {
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if (req.method === 'OPTIONS') return new Response(null, { status: 204, headers: CORS_HEADERS });
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if (req.headers.get('Upgrade') === 'websocket') {
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const [client, server] = Object.values(new WebSocketPair());
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server.accept();
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this.sockets.add(server);
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server.addEventListener('close', () => this.sockets.delete(server));
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server.addEventListener('message', e => this.state.waitUntil(this.onMessage(server, e)));
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return new Response(null, { status: 101, webSocket: client });
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}
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if (req.method === 'GET') {
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await this.autopsy();
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const text = this.buffer.map(it => it.text).join('') + this.pending;
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const isTerminal = ['done', 'error', 'evicted'].includes(this.phase);
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const isError = ['error', 'evicted'].includes(this.phase);
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const payload = { rid: this.rid, seq: this.seq, phase: this.phase, done: isTerminal, error: isError ? (this.error || 'The run was terminated unexpectedly.') : null, text };
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return this.corsJSON(payload);
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}
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return this.corsJSON({ error: 'not allowed' }, 405);
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}
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async onMessage(ws, evt) {
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await this.autopsy();
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let msg;
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try { msg = JSON.parse(String(evt.data || '')); }
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catch { return this.send(ws, { type: 'err', message: 'bad_json' }); }
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if (msg.type === 'stop') { if (msg.rid && msg.rid === this.rid) this.stop(); return; }
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if (msg.type !== 'begin') return this.send(ws, { type: 'err', message: 'bad_type' });
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const { rid, apiKey, or_body, model, messages, after, provider } = msg;
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const body = or_body || (model && Array.isArray(messages) ? { model, messages, stream: true, ...msg } : null);
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if (!rid || !apiKey || !body || !Array.isArray(body.messages) || body.messages.length === 0) return this.send(ws, { type: 'err', message: 'missing_fields' });
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if (this.phase === 'running' && rid !== this.rid) return this.send(ws, { type: 'err', message: 'busy' });
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if (rid === this.rid && this.phase !== 'idle') return this.replay(ws, Number.isFinite(+after) ? +after : -1);
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this.reset();
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this.rid = rid;
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this.phase = 'running';
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this.controller = new AbortController();
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await this.saveSnapshot();
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this.state.waitUntil(this.startHeartbeat());
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this.state.waitUntil(this.stream({ apiKey, body, provider: provider || 'openrouter' }));
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}
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async stream({ apiKey, body, provider }) {
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try {
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const providerMap = { openai: this.streamOpenAI, google: this.streamGoogle, claude: this.streamClaude };
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await (providerMap[provider] || this.streamOpenRouter).call(this, { apiKey, body });
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} catch (e) {
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if (this.phase === 'running') {
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const msg = String(e?.message || 'stream_failed');
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if (!((e && e.name === 'AbortError') || /abort/i.test(msg))) this.fail(msg);
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}
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} finally {
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if (this.phase === 'running') this.stop();
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}
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}
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async streamOpenAI({ apiKey, body }) {
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const client = new OpenAI({ apiKey });
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const params = { model: body.model, input: this.buildInputForResponses(body.messages || []), temperature: body.temperature, stream: true };
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if (Number.isFinite(+body.max_tokens) && +body.max_tokens > 0) params.max_output_tokens = +body.max_tokens;
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if (Number.isFinite(+body.top_p)) params.top_p = +body.top_p;
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if (body.reasoning?.effort) params.reasoning = { effort: body.reasoning.effort };
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if (body.verbosity) params.text = { verbosity: body.verbosity };
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this.oaStream = await client.responses.stream(params);
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try {
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for await (const event of this.oaStream) {
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if (this.phase !== 'running') break;
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if (event.type.endsWith('.delta') && event.delta) this.queueDelta(event.delta);
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}
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} finally {
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try { this.oaStream?.controller?.abort(); } catch {}
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this.oaStream = null;
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}
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}
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async streamClaude({ apiKey, body }) {
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const client = new Anthropic({ apiKey });
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const system = body.messages
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.filter(m => m.role === 'system')
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.map(m => this.extractTextFromMessage(m))
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.join('\n\n') || body.system;
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const payload = {
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model: body.model,
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messages: body.messages.filter(m => m.role !== 'system').map(m => ({
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role: m.role,
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content: typeof m.content === 'string' ? m.content : (m.content || []).map(p => {
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if (p.type === 'text' && p.text) return { type: 'text', text: p.text };
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if (p.type === 'image_url') {
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const match = String(p.image_url?.url || p.image_url || '').match(/^data:(image\/\w+);base64,(.*)$/);
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if (match) return { type: 'image', source: { type: 'base64', media_type: match[1], data: match[2] } };
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}
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}).filter(Boolean)
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})).filter(m => m.content.length),
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max_tokens: body.max_tokens || 64000,
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};
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if (system) payload.system = system;
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if (Number.isFinite(+body.temperature)) payload.temperature = +body.temperature;
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if (Number.isFinite(+body.top_p)) payload.top_p = +body.top_p;
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if (body.reasoning?.enabled) payload.extended_thinking = { enabled: true, ...(body.reasoning.budget && { max_thinking_tokens: body.reasoning.budget }) };
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const stream = client.messages.stream(payload);
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stream.on('text', text => { if (this.phase === 'running') this.queueDelta(text); });
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await stream.finalMessage();
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}
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async streamGoogle({ apiKey, body }) {
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const generationConfig = Object.entries({ temperature: body.temperature, topP: body.top_p, maxOutputTokens: body.max_tokens }).reduce((acc, [k, v]) => (Number.isFinite(+v) && +v >= 0 ? { ...acc, [k]: +v } : acc), {});
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if (body.reasoning) generationConfig.thinkingConfig = { includeThoughts: body.reasoning.exclude !== true };
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if (body.response_format?.type?.startsWith('json')) {
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generationConfig.responseMimeType = 'application/json';
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if (body.response_format.json_schema) {
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const translate = s => {
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if (typeof s !== 'object' || s === null) return s;
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const n = Array.isArray(s) ? [] : {};
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for (const k in s) if (Object.hasOwn(s, k)) n[k] = (k === 'type' && typeof s[k] === 'string') ? s[k].toUpperCase() : translate(s[k]);
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return n;
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};
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generationConfig.responseSchema = translate(body.response_format.json_schema.schema || body.response_format.json_schema);
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}
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}
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const model = (body.model ?? '').replace(/:online$/, '');
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const payload = { contents: this.mapToGoogleContents(body.messages), ...(Object.keys(generationConfig).length && { generationConfig }), ...((body.model ?? '').endsWith(':online') && { tools: [{ google_search: {} }] }) };
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const resp = await fetch(`https://generativelanguage.googleapis.com/v1beta/models/${model}:streamGenerateContent?alt=sse`, { method: 'POST', headers: { 'Content-Type': 'application/json', 'x-goog-api-key': apiKey }, body: JSON.stringify(payload), signal: this.controller.signal });
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if (!resp.ok) throw new Error(`Google API error: ${resp.status} ${await resp.text()}`);
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const reader = resp.body.getReader();
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const decoder = new TextDecoder();
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let buffer = '';
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while (this.phase === 'running') {
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const { done, value } = await reader.read();
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if (done) break;
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buffer += decoder.decode(value, { stream: true });
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for (const line of buffer.split('\n')) {
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if (!line.startsWith('data: ')) continue;
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try { JSON.parse(line.substring(6))?.candidates?.[0]?.content?.parts?.forEach(p => p.text && this.queueDelta(p.text)); } catch {}
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}
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buffer = buffer.slice(buffer.lastIndexOf('\n') + 1);
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}
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}
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async streamOpenRouter({ apiKey, body }) {
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const client = new OpenAI({ apiKey, baseURL: 'https://openrouter.ai/api/v1' });
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const stream = await client.chat.completions.create({ ...body, stream: true }, { signal: this.controller.signal });
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for await (const chunk of stream) {
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if (this.phase !== 'running') break;
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const delta = chunk?.choices?.[0]?.delta;
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if (delta?.reasoning && body.reasoning?.exclude !== true) this.queueDelta(delta.reasoning);
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if (delta?.content) this.queueDelta(delta.content);
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}
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}
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stop() {
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if (this.phase !== 'running') return;
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this.flush(true);
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this.phase = 'done';
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this.error = null;
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try { this.controller?.abort(); } catch {}
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try { this.oaStream?.controller?.abort(); } catch {}
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this.saveSnapshot();
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this.bcast({ type: 'done' });
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this.state.waitUntil(this.stopHeartbeat());
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}
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fail(message) {
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if (this.phase !== 'running') return;
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this.flush(true);
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this.phase = 'error';
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this.error = String(message || 'stream_failed');
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try { this.controller?.abort(); } catch {}
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try { this.oaStream?.controller?.abort(); } catch {}
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this.saveSnapshot();
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this.bcast({ type: 'err', message: this.error });
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this.state.waitUntil(this.stopHeartbeat());
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}
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async startHeartbeat() {
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if (this.hbActive || this.phase !== 'running') return;
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this.hbActive = true;
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await this.state.storage.setAlarm(Date.now() + HB_INTERVAL_MS).catch(() => {});
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}
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async stopHeartbeat() {
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this.hbActive = false;
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await this.state.storage.setAlarm(null).catch(() => {});
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}
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async Heart() {
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if (this.phase !== 'running' || !this.hbActive) return this.stopHeartbeat();
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if (++this.age * HB_INTERVAL_MS >= MAX_RUN_MS) return this.fail('Run timed out after 15 minutes.');
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await this.state.storage.setAlarm(Date.now() + HB_INTERVAL_MS).catch(() => {});
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}
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async alarm() {
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await this.autopsy();
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await this.Heart();
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}
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isMultimodalMessage(m) { return m && Array.isArray(m.content) && m.content.some(p => p?.type && p.type !== 'text' && p.type !== 'input_text'); }
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extractTextFromMessage(m) {
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if (!m) return '';
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if (typeof m.content === 'string') return String(m.content);
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if (!Array.isArray(m.content)) return '';
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return m.content.filter(p => p && ['text', 'input_text'].includes(p.type)).map(p => String(p.type === 'text' ? (p.text ?? p.content ?? '') : (p.text ?? ''))).join('');
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}
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mapContentPartToResponses(part) {
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const type = part?.type || 'text';
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if (['image_url', 'input_image'].includes(type)) return (part?.image_url?.url || part?.image_url) ? { type: 'input_image', image_url: String(part?.image_url?.url || part?.image_url) } : null;
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if (['text', 'input_text'].includes(type)) return { type: 'input_text', text: String(type === 'text' ? (part.text ?? part.content ?? '') : (part.text ?? '')) };
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return { type: 'input_text', text: `[${type}:${part?.file?.filename || 'file'}]` };
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}
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buildInputForResponses(messages) {
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if (!Array.isArray(messages) || messages.length === 0) return '';
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if (!messages.some(m => this.isMultimodalMessage(m))) {
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if (messages.length === 1) return this.extractTextFromMessage(messages[0]);
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return messages.map(m => ({ role: m.role, content: this.extractTextFromMessage(m) }));
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}
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return messages.map(m => ({ role: m.role, content: Array.isArray(m.content) ? m.content.map(p => this.mapContentPartToResponses(p)).filter(Boolean) : [{ type: 'input_text', text: String(m.content || '') }] }));
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}
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mapToGoogleContents(messages) {
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const contents = messages.reduce((acc, m) => {
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const role = m.role === 'assistant' ? 'model' : 'user';
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const msgContent = Array.isArray(m.content) ? m.content : [{ type: 'text', text: String(m.content ?? '') }];
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const parts = msgContent.map(p => {
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if (p.type === 'text') return { text: p.text || '' };
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if (p.type === 'image_url' && p.image_url?.url) {
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const match = p.image_url.url.match(/^data:(image\/\w+);base64,(.*)$/);
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if (match) return { inline_data: { mime_type: match[1], data: match[2] } };
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}
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return null;
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}).filter(Boolean);
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if (!parts.length) return acc;
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if (acc.length > 0 && acc.at(-1).role === role) acc.at(-1).parts.push(...parts);
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else acc.push({ role, parts });
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return acc;
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}, []);
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if (contents.at(-1)?.role !== 'user') contents.pop();
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return contents;
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}
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}
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