Delete file when user cancel request (#567)

* adding new test

* fixup

Signed-off-by: Matteo Collina <hello@matteocollina.com>

* fixup

Signed-off-by: Matteo Collina <hello@matteocollina.com>

* fixup

Signed-off-by: Matteo Collina <hello@matteocollina.com>

* fixup

Signed-off-by: Matteo Collina <hello@matteocollina.com>

---------

Signed-off-by: Matteo Collina <hello@matteocollina.com>
Co-authored-by: Matteo Collina <hello@matteocollina.com>

index.js

@@ -452,13 +452,14 @@ function fastifyMultipart (fastify, options, done) {
     this.savedRequestFiles = []
     const tmpdir = (options && options.tmpdir) || os.tmpdir()
     this.tmpUploads = []
+    let i = 0
     for await (const file of files) {
-      const filepath = path.join(tmpdir, generateId() + path.extname(file.filename))
+      const filepath = path.join(tmpdir, generateId() + path.extname(file.filename || ('file' + i++)))
       const target = createWriteStream(filepath)
       try {
+        this.tmpUploads.push(filepath)
         await pump(file.file, target)
         this.savedRequestFiles.push({ ...file, filepath })
-        this.tmpUploads.push(filepath)
       } catch (err) {
         this.log.error({ err }, 'save request file')
         throw err

test/big.test.js

@@ -43,8 +43,8 @@ test('should upload a big file in constant memory', { skip: process.env.CI }, fu
     }
 
     const memory = process.memoryUsage()
-    t.ok(memory.rss < 400 * 1024 * 1024) // 200MB
-    t.ok(memory.heapTotal < 400 * 1024 * 1024) // 200MB
+    t.ok(memory.rss < 500 * 1024 * 1024)
+    t.ok(memory.heapTotal < 500 * 1024 * 1024)
 
     reply.send()
   })

test/multipart-incomplete-upload.test.js

@@ -1,17 +1,19 @@
 'use strict'
 
-const util = require('node:util')
 const test = require('tap').test
 const FormData = require('form-data')
 const Fastify = require('fastify')
 const multipart = require('..')
 const http = require('node:http')
+const util = require('node:util')
 const sleep = util.promisify(setTimeout)
 const { writableNoopStream } = require('noop-stream')
 const stream = require('node:stream')
 const pipeline = util.promisify(stream.pipeline)
+const { once } = require('node:events')
+const fs = require('node:fs/promises')
 
-test('should finish with error on partial upload', async function (t) {
+test('should finish with error on partial upload - files api', async function (t) {
   t.plan(4)
 
   const fastify = Fastify()
@@ -60,3 +62,50 @@ test('should finish with error on partial upload', async function (t) {
   await sleep(100)
   t.end()
 })
+
+test('should finish with error on partial upload - saveRequestFiles', async function (t) {
+  t.plan(3)
+
+  const fastify = Fastify()
+  t.teardown(fastify.close.bind(fastify))
+
+  await fastify.register(multipart)
+
+  let tmpUploads
+  fastify.post('/', async function (req) {
+    t.ok(req.isMultipart())
+    try {
+      await req.saveRequestFiles()
+    } finally {
+      tmpUploads = req.tmpUploads
+    }
+  })
+
+  await fastify.listen({ port: 0 })
+  const dataSize = 1024 * 1024 * 1024
+
+  // request
+  const form = new FormData()
+  form.append('upload', Buffer.alloc(dataSize))
+  const opts = {
+    protocol: 'http:',
+    hostname: 'localhost',
+    port: fastify.server.address().port,
+    path: '/',
+    headers: form.getHeaders(),
+    method: 'POST'
+  }
+
+  const req = http.request(opts)
+  const data = form.getBuffer()
+  req.write(data.slice(0, dataSize / 4))
+  req.write(data.slice(dataSize / 4, dataSize / 2))
+  req.end()
+
+  const [res] = await once(req, 'response')
+  t.equal(res.statusCode, 500)
+
+  for (const tmpUpload of tmpUploads) {
+    await t.rejects(fs.access(tmpUpload))
+  }
+})