fix: Huge file wado-rs

fs.readFileSync can not handle 2 GB file.
Use package that can convert stream to buffer to fix thie issuse.

refactor: Move build file to build_raccoon

chore: Ignore build directory

chore: Added package @jorgeferrero/stream-to-buffer

The package can convert stream to buffer

.gitignore

@@ -23,3 +23,4 @@ models/dcmtk/dcmtk-3.6.5-win64-dynamic
 api/dicom-xml/upload_xml/*.*
 mongodb
 temp/
+build/

api/dicom-web/controller/wado-rs.js

@@ -8,6 +8,7 @@ const uuid = require('uuid');
 const _ = require('lodash');
 const DICOMWebHandleError = require('../../../models/DICOMWeb/httpMessage');
 const { writeImageMultipart } = require('../../../models/DICOMWeb')
+const { streamToBuffer } = require('@jorgeferrero/stream-to-buffer');
 module.exports = async function (req , res) {
     let keys = Object.keys(req.params);
     console.log(req.headers.accept);
@@ -218,7 +219,7 @@ let multipartFunc = {
                     const BOUNDORY = `${uuid.v4()}-${uuid.v4()}`;
                     for (let i= 0 ; i < imagesPath.length ; i++) {
                         console.log(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[i]}`);
-                        let fileBuffer = fs.readFileSync(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[i]}`);
+                        let fileBuffer = await streamToBuffer(fs.createReadStream(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[i]}`));
                         res.write(`${i==0? "":"\n\n"}--${BOUNDORY}\n`);
                         res.write(`Content-Type: ${type}\n`);
                         res.write('Content-length: ' + fileBuffer.length + '\n\n');
@@ -237,7 +238,7 @@ let multipartFunc = {
                     const BOUNDORY = `${uuid.v4()}-${uuid.v4()}`;
                     for (let i= 0 ; i < imagesPath.length ; i++) {
                         console.log(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[i]}`);
-                        let fileBuffer = fs.readFileSync(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[i]}`);
+                        let fileBuffer = await streamToBuffer(fs.createReadStream(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[i]}`));
                         res.write(`${i==0? "":"\n\n"}--${BOUNDORY}\n`);
                         res.write(`Content-Type: ${type}\n`);
                         res.write('Content-length: ' + fileBuffer.length + '\n\n');
@@ -254,7 +255,7 @@ let multipartFunc = {
                 let imagesPath = await mongoFunc.getInstanceImagePath(iParam);
                 if (imagesPath) {
                     const BOUNDORY = `${uuid.v4()}-${uuid.v4()}`;
-                    let fileBuffer = fs.readFileSync(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[0]}`);
+                    let fileBuffer = await streamToBuffer(fs.createReadStream(`${process.env.DICOM_STORE_ROOTPATH}${imagesPath[0]}`));
                     console.log(imagesPath[0]);
                     res.write(`--${BOUNDORY}\n`);
                     res.write(`Content-Type: ${type}\n`);

package.json

@@ -17,6 +17,7 @@
   "license": "MIT",
   "dependencies": {
     "@asymmetrik/node-fhir-server-core": "^2.0.10",
+    "@jorgeferrero/stream-to-buffer": "^2.0.6",
     "adm-zip": "^0.5.1",
     "archiver": "^4.0.1",
     "bcrypt": "^5.0.0",