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Add new LOWCODER_NODE_REQUEST_SIZE_LIMIT to handle nodejs body size. #1942

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Add new LOWCODER_NODE_REQUEST_SIZE_LIMIT to handle nodejs body size. #1942

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96ce8bb
Add new LOWCODER_NODE_REQUEST_SIZE_LIMIT to handle nodejs body size.
amitshuklabag Aug 7, 2025
a71cc82
Update package.json
amitshuklabag Aug 7, 2025
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Add new LOWCODER_NODE_REQUEST_SIZE_LIMIT to handle nodejs body size. 
Currently, if we upload a file more than 1 MB, there is an error in the backend, so to fix this, I have added a new env var:

PayloadTooLargeError: request entity too large
    at readStream (/lowcoder/node-service/app/node_modules/raw-body/index.js:163:17)
    at getRawBody (/lowcoder/node-service/app/node_modules/raw-body/index.js:116:12)
    at read (/lowcoder/node-service/app/node_modules/body-parser/lib/read.js:79:3)
    at jsonParser (/lowcoder/node-service/app/node_modules/body-parser/lib/types/json.js:138:5)
    at /lowcoder/node-service/app/build/server.js:43:46
    at newFn (/lowcoder/node-service/app/node_modules/express-async-errors/index.js:16:20)
    at Layer.handle [as handle_request] (/lowcoder/node-service/app/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/lowcoder/node-service/app/node_modules/express/lib/router/index.js:328:13)
    at /lowcoder/node-service/app/node_modules/express/lib/router/index.js:286:9
    at Function.process_params (/lowcoder/node-service/app/node_modules/express/lib/router/index.js:346:12)
    at next (/lowcoder/node-service/app/node_modules/express/lib/router/index.js:280:10)
    at urlencodedParser (/lowcoder/node-service/app/node_modules/body-parser/lib/types/urlencoded.js:103:7)
    at newFn (/lowcoder/node-service/app/node_modules/express-async-errors/index.js:16:20)
    at Layer.handle [as handle_request] (/lowcoder/node-service/app/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/lowcoder/node-service/app/node_modules/express/lib/router/index.js:328:13)
    at /lowcoder/node-service/app/node_modules/express/lib/router/index.js:286:9 {
  expected: 338,
  length: 338,
  limit: 120,
  type: 'entity.too.large'
}
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@amitshuklabag
amitshuklabag authored Aug 7, 2025
commit 96ce8bb8297360263bc57913cd72e7aa18ad7ee4
17 changes: 11 additions & 6 deletions server/node-service/src/server.ts
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Expand Up @@ -10,6 +10,10 @@ import apiRouter from "./routes/apiRouter";
import systemRouter from "./routes/systemRouter";
import cors, { CorsOptions } from "cors";
import bodyParser from "body-parser";
const bytes = require("bytes");
const requestSizeLimitStr = process.env.LOWCODER_NODE_REQUEST_SIZE_LIMIT || "50mb";
const requestSizeLimitBytes = bytes(requestSizeLimitStr);

collectDefaultMetrics();

const prefix = "/node-service";
Expand All @@ -35,17 +39,18 @@ router.use(express.urlencoded({ extended: false }));

/** Custom middleware: use raw body for encrypted requests */
router.use((req, res, next) => {
if (req.headers["x-encrypted"]) {
bodyParser.text({ type: "*/*" })(req, res, next);
} else {
bodyParser.json()(req, res, next);
}
if (req.headers["x-encrypted"]) {
body_parser_1.default.text({ type: "*/*", requestSizeLimitStr })(req, res, next);
}
else {
body_parser_1.default.json({ requestSizeLimitStr })(req, res, next);
}
});

/** Takes care of JSON data */
router.use(
express.json({
limit: 1024 * 1024 * 50, // 50 MB
limit: requestSizeLimitBytes
})
);

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