Unable to update Cloud SQL user password using Go SDK

[hussnain_ahmad]

I'm using Go SDK and trying to update the user password for an already existing user using the Update method on UsersService UsersService.Update which returns me an error that user is a required filed although I'm passing the user parameter correctly. On the other hand, if I use UsersService.Insert method for an already existing user, the operation is successful and password gets updated in case of PostgreSQL. While for MySQL, the Insert operation adds a new user with same name.

[ms4446]

When managing Cloud SQL users using the Google Cloud SQL Admin API in the Go SDK, you may encounter different behaviors depending on the method you use to update a user's password. This is due to the distinct functionalities of the Update and Insert methods.

Update Method

The Update method is designed for modifying the properties of existing users. When using this method to update a user's password, it's crucial to provide the complete user object, including the username, password, and any other relevant attributes. Omitting any required fields will result in an error.

Behavior with PostgreSQL and MySQL

Your observation regarding the Insert method is accurate. For PostgreSQL instances, using Insert for an existing user updates the password as PostgreSQL permits password updates without requiring the entire user object. However, for MySQL instances, the same Insert method creates a new user with the same name due to MySQL interpreting it as an addition request.

Recommended Approach: Patch Method

To update an existing Cloud SQL user's password more efficiently, consider using the Patch method. This method allows for partial updates, making it ideal for modifying individual properties like a password.

Patch Method Example in Go

import (
    "context"
    "fmt"
    sqladmin "google.golang.org/api/sqladmin/v1beta4"
)

func updateCloudSQLUserPassword(projectID, instanceID, username, newPassword string) error {
    ctx := context.Background()
    service, err := sqladmin.NewService(ctx)
    if err != nil {
        return fmt.Errorf("failed to create Cloud SQL admin service: %w", err)
    }

    // Create the patch request
    patch := &sqladmin.User{
        Password: newPassword,
    }

    // Send the patch request
    req := service.Users.Patch(projectID, instanceID, username).Body(patch)
    _, err = req.Do()
    if err != nil {
        return fmt.Errorf("failed to update Cloud SQL user password: %w", err)
    }

    return nil
}

This code snippet demonstrates updating a Cloud SQL user's password using the Patch method. It involves initializing the Cloud SQL admin service, creating a patch request with the new password, and executing the request.

Additional Considerations

• Ensure accuracy in the provided projectID, instanceID, and username.
• Implement robust error handling to manage potential exceptions or failures.
• Maintain security best practices, especially when handling passwords and sensitive data.

Testing and Documentation

• Thoroughly test this implementation in a controlled environment before applying it in production.
• Stay updated with the latest Google Cloud SQL documentation and SDK updates.

While the Update method requires a full user object, the Patch method is more suitable for updating specific attributes like passwords. This approach should help you manage Cloud SQL user passwords more effectively in your Go applications.

[hussnain_ahmad]

@ms4446 thanks for the update. I'm using the latest version of Go SDK and users service does not have patch method on it. Can you please let me know which version are you using for the SDK.

[ms4446]

Hi @hussnain_ahmad ,

I apologize for any confusion caused by the previous code snippet. To update an existing Cloud SQL user's password using the latest stable version of the Google Cloud SQL Admin API for Go, you should use the Update method. This method requires providing the complete user object, including the username, password, and any other necessary attributes.

Here's an updated example using the Update method:

package main

import (
    "context"
    "fmt"
    "google.golang.org/api/sqladmin/v1"
)

func updateCloudSQLUserPassword(projectID, instanceID, username, newPassword string) error {
    ctx := context.Background()

    service, err := sqladmin.NewService(ctx)
    if err != nil {
        return fmt.Errorf("failed to create Cloud SQL admin service: %w", err)
    }

    // Create the complete user object
    user := &sqladmin.User{
        Name:     username,
        Password: newPassword,
        // Include other necessary fields here
    }

    // Send the update request
    req := service.Users.Update(projectID, instanceID, username).Body(user)
    _, err = req.Do()
    if err != nil {
        return fmt.Errorf("failed to update Cloud SQL user password: %w", err)
    }

    return nil
}

func main() {
    projectID := "YOUR_PROJECT_ID"
    instanceID := "YOUR_INSTANCE_ID"
    username := "YOUR_USERNAME"
    newPassword := "YOUR_NEW_PASSWORD"

    err := updateCloudSQLUserPassword(projectID, instanceID, username, newPassword)
    if err != nil {
        fmt.Println(err)
        return
    }

    fmt.Println("Cloud SQL user password updated successfully.")
}

Please ensure you have installed the latest version of the Google Cloud SQL Admin API for Go. The typical command for installation is:

go get google.golang.org/api/sqladmin/v1