Transaction Bootup
The bootup and initialization of a transaction consists of two steps:
- Initialize Stack
- Invoke Transaction Processor
Initialize Stack
Before a transaction is executed, initialization of the Kernel/System/VM stack occurs. During this initialization phase, configuration is loaded from the database and the state of each layer is initialized.
| Layer | Initialization Description |
|---|---|
| Kernel | Load Kernel version Check transaction references Create Initial Call Frame |
| System | Load System module configurations Verify transaction has not been previously executed Verify transaction is valid within epoch bounds Initialize enabled System Modules |
| VM | Load Scrypto VM version |
Invoke Transaction Processor
Once the entire stack has been initialized along with the initial call frame, an invocation of a
well-known blueprint, TRANSACTION_PROCESSOR, is made with the arguments specified in the transaction.
From this point forward, normal transaction execution occurs.