fix(fs/S3Handler#_write): work when file doesn't exist (#5561)

@xen-orchestra/fs/src/s3.js

@@ -152,10 +152,19 @@ export default class S3Handler extends RemoteHandlerAbstract {
       file = file.fd
     }
     const uploadParams = this._createParams(file)
-    const fileSize = +(await this._s3.headObject(uploadParams)).ContentLength
+    let fileSize
+    try {
+      fileSize = +(await this._s3.headObject(uploadParams)).ContentLength
+    } catch (e) {
+      if (e.code === 'NotFound') {
+        fileSize = 0
+      } else {
+        throw e
+      }
+    }
     if (fileSize < MIN_PART_SIZE) {
       const resultBuffer = Buffer.alloc(Math.max(fileSize, position + buffer.length))
-      const fileContent = (await this._s3.getObject(uploadParams)).Body
+      const fileContent = fileSize !== 0 ? (await this._s3.getObject(uploadParams)).Body : Buffer.alloc(0)
       fileContent.copy(resultBuffer)
       buffer.copy(resultBuffer, position)
       await this._s3.putObject({ ...uploadParams, Body: resultBuffer })

CHANGELOG.unreleased.md

@@ -38,6 +38,7 @@
 >
 > In case of conflict, the highest (lowest in previous list) `$version` wins.
 
+- @xen-orchestra/fs minor
 - xen-api patch
 - xo-common minor
 - xo-server minor