llm-mixer / server.js
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:zap: [Enhance] Remove live.js to reduce network cost
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const fs = require("fs").promises;
const express = require("express");
const axios = require("axios");
const bodyParser = require("body-parser");
const path = require("path");
const app = express();
app.use(express.static(path.join(__dirname, ".")));
app.use(bodyParser.json());
app.get("/", (req, res) => {
res.sendFile(path.join(__dirname + "/index.html"));
});
app.get("/endpoints", async (req, res) => {
try {
let endpoints_configs_path = path.join(
__dirname,
"configs",
"endpoints.json"
);
const data = await fs.readFile(endpoints_configs_path, "utf-8");
const local_points = JSON.parse(data);
res.json(local_points);
} catch (error) {
console.error(error);
res.status(500).json({
error: "Failed to get local endpoints: Maybe configs/endpoints.json not existed?",
});
}
});
app.get("/agents", async (req, res) => {
try {
let agents_configs_path = path.join(
__dirname,
"configs",
"agents.json"
);
const data = await fs.readFile(agents_configs_path, "utf-8");
const local_agents = JSON.parse(data);
res.json(local_agents);
} catch (error) {
console.error(error);
res.status(500).json({
error: "Failed to get local agents: Maybe configs/agents.json not existed?",
});
}
});
let httpProxyDict = false;
const loadHttpProxy = async () => {
try {
let secrets_configs_path = path.join(
__dirname,
"configs",
"secrets.json"
);
const data = await fs.readFile(secrets_configs_path, "utf-8");
const secrets = JSON.parse(data);
if (secrets.http_proxy) {
const url = new URL(secrets.http_proxy);
httpProxyDict = {
protocol: url.protocol.slice(0, -1),
host: url.hostname,
port: parseInt(url.port),
};
} else {
console.warn("http_proxy not found in secrets");
}
} catch (error) {
console.warn(
"Failed to load http_proxy: Maybe configs/secrets.json not existed?"
);
}
};
loadHttpProxy();
app.post("/models", async (req, res) => {
try {
const {
openai_endpoint,
openai_request_method,
openai_request_headers,
} = req.body;
let axios_config = {
method: openai_request_method,
url: openai_endpoint + "/v1/models",
headers: openai_request_headers,
};
if (httpProxyDict) {
axios_config.proxy = httpProxyDict;
}
const response = await axios(axios_config);
res.json(response.data);
} catch (error) {
console.error(error);
res.status(500).json({ error: "Failed to request OpenAI Endpoint" });
}
});
app.post("/chat/completions", async (req, res) => {
try {
const {
openai_endpoint,
openai_request_method,
openai_request_headers,
openai_request_body,
} = req.body;
let axios_config = {
method: openai_request_method,
url: openai_endpoint + "/v1/chat/completions",
data: openai_request_body,
headers: openai_request_headers,
responseType: "stream",
};
if (httpProxyDict) {
axios_config.proxy = httpProxyDict;
}
console.log(`request to ${axios_config.url}`);
const response = await axios(axios_config);
response.data.pipe(res);
} catch (error) {
console.error(error);
res.status(500).json({ error: "Failed to request OpenAI Endpoint" });
}
});
const port = 23456;
app.listen(port, "0.0.0.0", () => {
console.log(`Server is running on http://0.0.0.0:${port}`);
});