tencent cloud

PrevNext

masukan

cari berdasarkan kata kunci

Recent Pages

Dokumentasi
Cloud Object Storage
    Dokumentasi

    Custom Hash Calculation

    Terakhir diperbarui:2024-03-25 15:16:26

      Overview

      Errors may occur when data is being transmitted between the client and the server. Cloud Object Storage (COS) combined with Serverless Cloud Function (SCF) can ensure the integrity of uploaded data through data verification, for example, MD5 verification. When users upload files to COS, SCF will help verify the objects uploaded by the users to ensure the integrity and correctness of the uploaded data.

      Background

      None of the existing public cloud object storage services in the industry provides MD5 verification, and after a user uploads a file, the following situations may occur:
      Duplicated files and rising costs
      File errors and lower business efficiency
      File missing

      Solution Strengths

      Visual operation: one-click configuration simplifies the development process without coding, greatly improving R&D efficiency
      Multiple options: MD5, SHA1, SHA256, and CRC64 are available, meeting user requirements in various scenarios
      Automatic execution: once a file is uploaded to COS, the workflow for calculating the verification code is triggered

      Directions

      1. Log in to the COS console.
      2. create a workflow, customize a format filter rule, and create a custom function node,For detailed steps, see Configuring a Workflow.
      3. In the function node pop-up window, click Add Function.
      4. On the SCF creation page, select the Calculate COS object hash template.
      5. Based on the user's file size, configure the execution timeout period in the basic settings and configure sufficient memory in the advanced settings.
      6. Configure the function code. This function template supports the following two environment variables:
      hashTypeList: indicates the list of calculation algorithms. This variable is optional. The default value is ["crc64", "md5", "sha1", "sha256"].
      caseType: indicates the hash case. This variable is optional. The default value is lowercase. You can also pass in uppercase.
      7. Enable permission configuration and bind a role that has the read/write permission of the current bucket. If you need to create an execution role, see Role and Authorization. 8.Click Finish.
      8. Go back to the previous workflow page, select the custom transcoding function created just now, and save the workflow.
      9. Upload the file. After the workflow processing is successful, you can see that multiple hash headers are successfully added to the uploaded file.
      Hubungi Kami

      Hubungi tim penjualan atau penasihat bisnis kami untuk membantu bisnis Anda.

      Hubungi Kami
      Dukungan Teknis

      Buka tiket jika Anda mencari bantuan lebih lanjut. Tiket kami tersedia 7x24.

      Kirim Tiket
      Dukungan Telepon 7x24
      Copyright © 2013-2024 Tencent Cloud. All Rights Reserved.
      Kebijakan PrivasiLegalKebijakan Cookie