Function terminate_all_instances

pub async fn terminate_all_instances(
    pool: &Pool<MySql>,
    app_id: i64,
) -> Result<()>

Terminates all running instances for a specific application.

This function marks all running instances of an application as ‘terminated’. It’s typically used during application shutdown, maintenance, or redeployment scenarios when all compute resources need to be released.

Arguments

• pool - Database connection pool for executing the query
• app_id - Unique identifier of the application whose instances to terminate

Returns

• Ok(()) - Successfully marked instances as terminated
• Err(anyhow::Error) - Failed to terminate instances

Important

This function only updates the database records to reflect termination. The actual termination of compute resources should be handled by a separate process that reacts to these status changes.

Transaction Handling

This function uses a database transaction to ensure atomicity of the operation. If any part of the operation fails, the entire operation is rolled back.

Use Cases

Common scenarios for using this function include:

• Application shutdown or decommissioning
• Emergency resource release during cost overruns
• Preparing for maintenance or major version upgrades
• Responding to security incidents requiring isolation