KI-AGENT: Überspringe fehlende S3-Dateien beim Mandantenexport

backend/src/utils/tenantFullExport.ts

@@ -25,7 +25,9 @@ export type TenantFullExport = {
         name: string | null
         mimeType: string | null
         size: number | null
-        contentBase64: string
+        contentBase64: string | null
+        missing?: boolean
+        error?: string
     }[]
 }
 
@@ -121,7 +123,13 @@ const decryptEntityBankAccountsForExport = (rows: Record<string, any>[] = []) =>
     })
 }
 
+const isMissingObjectError = (err: any) =>
+    err?.Code === "NoSuchKey" ||
+    err?.name === "NoSuchKey" ||
+    err?.$metadata?.httpStatusCode === 404
+
 const loadObjectAsBase64 = async (path: string) => {
+    try {
         const { Body } = await s3.send(new GetObjectCommand({
             Bucket: secrets.S3_BUCKET,
             Key: path,
@@ -132,7 +140,20 @@ const loadObjectAsBase64 = async (path: string) => {
             chunks.push(Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk))
         }
 
-    return Buffer.concat(chunks).toString("base64")
+        return {
+            contentBase64: Buffer.concat(chunks).toString("base64"),
+            missing: false,
+            error: null,
+        }
+    } catch (err: any) {
+        if (!isMissingObjectError(err)) throw err
+
+        return {
+            contentBase64: null,
+            missing: true,
+            error: err?.Code || err?.name || "NoSuchKey",
+        }
+    }
 }
 
 export const buildTenantFullExport = async (server: FastifyInstance, tenantId: number): Promise<TenantFullExport> => {
@@ -198,13 +219,25 @@ export const buildTenantFullExport = async (server: FastifyInstance, tenantId: n
         for (const file of fileRows) {
             if (!file.path) continue
 
+            const object = await loadObjectAsBase64(file.path)
+            if (object.missing) {
+                server.log.warn({
+                    fileId: file.id,
+                    path: file.path,
+                    bucket: secrets.S3_BUCKET,
+                    error: object.error,
+                }, "Tenant full export skipped missing S3 object")
+            }
+
             files.push({
                 id: file.id,
                 path: file.path,
                 name: file.name || null,
                 mimeType: file.mimeType || null,
                 size: file.size || null,
-                contentBase64: await loadObjectAsBase64(file.path),
+                contentBase64: object.contentBase64,
+                missing: object.missing || undefined,
+                error: object.error || undefined,
             })
         }