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101
applications/tari_dan_app_utilities/src/transaction_executor.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| // Copyright 2023 The Tari Project | ||
| // SPDX-License-Identifier: BSD-3-Clause | ||
|
|
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| use std::sync::Arc; | ||
|
|
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| use tari_common_types::types::PublicKey; | ||
| use tari_crypto::tari_utilities::ByteArray; | ||
| use tari_dan_common_types::services::template_provider::TemplateProvider; | ||
| use tari_dan_engine::{ | ||
| fees::{FeeModule, FeeTable}, | ||
| packager::LoadedTemplate, | ||
| runtime::{AuthParams, ConsensusContext, RuntimeModule}, | ||
| state_store::{memory::MemoryStateStore, StateStoreError}, | ||
| transaction::{TransactionError, TransactionProcessor}, | ||
| }; | ||
| use tari_dan_storage::consensus_models::ExecutedTransaction; | ||
| use tari_engine_types::commit_result::{ExecuteResult, FinalizeResult, RejectReason}; | ||
| use tari_template_lib::{crypto::RistrettoPublicKeyBytes, prelude::NonFungibleAddress}; | ||
| use tari_transaction::Transaction; | ||
|
|
||
| pub trait TransactionExecutor { | ||
| type Error: Send + Sync + 'static; | ||
|
|
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| fn execute( | ||
| &self, | ||
| transaction: Transaction, | ||
| state_store: MemoryStateStore, | ||
| consensus_context: ConsensusContext, | ||
| ) -> Result<ExecutedTransaction, Self::Error>; | ||
| } | ||
|
|
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| #[derive(Debug, Clone)] | ||
| pub struct TariDanTransactionProcessor<TTemplateProvider> { | ||
| template_provider: Arc<TTemplateProvider>, | ||
| fee_table: FeeTable, | ||
| } | ||
|
|
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| impl<TTemplateProvider> TariDanTransactionProcessor<TTemplateProvider> { | ||
| pub fn new(template_provider: TTemplateProvider, fee_table: FeeTable) -> Self { | ||
| Self { | ||
| template_provider: Arc::new(template_provider), | ||
| fee_table, | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl<TTemplateProvider> TransactionExecutor for TariDanTransactionProcessor<TTemplateProvider> | ||
| where TTemplateProvider: TemplateProvider<Template = LoadedTemplate> | ||
| { | ||
| type Error = TransactionProcessorError; | ||
|
|
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| fn execute( | ||
| &self, | ||
| transaction: Transaction, | ||
| state_store: MemoryStateStore, | ||
| consensus_context: ConsensusContext, | ||
| ) -> Result<ExecutedTransaction, Self::Error> { | ||
| // Include ownership token for the signers of this in the auth scope | ||
| let owner_token = get_auth_token(transaction.signer_public_key()); | ||
| let auth_params = AuthParams { | ||
| initial_ownership_proofs: vec![owner_token], | ||
| }; | ||
|
|
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| let initial_cost = 0; | ||
| let modules: Vec<Arc<dyn RuntimeModule<TTemplateProvider>>> = | ||
| vec![Arc::new(FeeModule::new(initial_cost, self.fee_table.clone()))]; | ||
|
|
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| let processor = TransactionProcessor::new( | ||
| self.template_provider.clone(), | ||
| state_store, | ||
| auth_params, | ||
| consensus_context, | ||
| modules, | ||
| ); | ||
| let tx_id = transaction.hash(); | ||
| let result = match processor.execute(transaction.clone()) { | ||
| Ok(result) => result, | ||
| Err(err) => ExecuteResult { | ||
| finalize: FinalizeResult::reject(tx_id, RejectReason::ExecutionFailure(err.to_string())), | ||
| transaction_failure: None, | ||
| fee_receipt: None, | ||
| }, | ||
| }; | ||
|
|
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| Ok(ExecutedTransaction::new(transaction, result)) | ||
| } | ||
| } | ||
|
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| fn get_auth_token(public_key: &PublicKey) -> NonFungibleAddress { | ||
| let public_key = | ||
| RistrettoPublicKeyBytes::from_bytes(public_key.as_bytes()).expect("Expected public key to be 32 bytes"); | ||
| NonFungibleAddress::from_public_key(public_key) | ||
| } | ||
|
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| #[derive(Debug, thiserror::Error)] | ||
| pub enum TransactionProcessorError { | ||
| #[error(transparent)] | ||
| TransactionError(#[from] TransactionError), | ||
| #[error(transparent)] | ||
| StateStoreError(#[from] StateStoreError), | ||
| } |
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