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* draft of `InhrerentInternal::genesis_utxos` * make it build * transactions list in `GenesisConfig` imported in block 0 by `TuxedoGenesisBlockBuilder` * added `genesis_builder.rs` * make clippy happy * fixed genesis tests * beautify GenesisConfig * moved `genesis_builder.rs` from `node` to `tuxedo-core` * make it build * move `assimilate_storage` in `tuxedo-core` * forgot a file * let's make toml-sort happy * update wallet to apply extrinsics for genesis blocks * clear extrinsics list from storage in `build_genesis_block` * improved comments, check genesis transactions inputs and peeks length * removed superfluous Box, ran `cargo clippy --fix` * removed "first block hack" references and consequences, fmt --------- Signed-off-by: muraca <mmuraca247@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| //! Custom GenesisBlockBuilder for Tuxedo, to allow extrinsics to be added to the genesis block. | ||
| use crate::{ | ||
| ensure, | ||
| types::{OutputRef, Transaction}, | ||
| EXTRINSIC_KEY, | ||
| }; | ||
| use parity_scale_codec::{Decode, Encode}; | ||
| use sc_chain_spec::BuildGenesisBlock; | ||
| use sc_client_api::backend::{Backend, BlockImportOperation}; | ||
| use sc_executor::RuntimeVersionOf; | ||
| use scale_info::TypeInfo; | ||
| use sp_core::{storage::Storage, traits::CodeExecutor}; | ||
| use sp_runtime::{ | ||
| traits::{BlakeTwo256, Block as BlockT, Hash as HashT, Header as HeaderT, Zero}, | ||
| BuildStorage, | ||
| }; | ||
| use std::sync::Arc; | ||
|
|
||
| pub struct TuxedoGenesisBlockBuilder< | ||
| 'a, | ||
| Block: BlockT, | ||
| B: Backend<Block>, | ||
| E: RuntimeVersionOf + CodeExecutor, | ||
| > { | ||
| build_genesis_storage: &'a dyn BuildStorage, | ||
| commit_genesis_state: bool, | ||
| backend: Arc<B>, | ||
| executor: E, | ||
| _phantom: std::marker::PhantomData<Block>, | ||
| } | ||
|
|
||
| impl<'a, Block: BlockT, B: Backend<Block>, E: RuntimeVersionOf + CodeExecutor> | ||
| TuxedoGenesisBlockBuilder<'a, Block, B, E> | ||
| { | ||
| pub fn new( | ||
| build_genesis_storage: &'a dyn BuildStorage, | ||
| commit_genesis_state: bool, | ||
| backend: Arc<B>, | ||
| executor: E, | ||
| ) -> sp_blockchain::Result<Self> { | ||
| Ok(Self { | ||
| build_genesis_storage, | ||
| commit_genesis_state, | ||
| backend, | ||
| executor, | ||
| _phantom: Default::default(), | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| impl<'a, Block: BlockT, B: Backend<Block>, E: RuntimeVersionOf + CodeExecutor> | ||
| BuildGenesisBlock<Block> for TuxedoGenesisBlockBuilder<'a, Block, B, E> | ||
| { | ||
| type BlockImportOperation = <B as Backend<Block>>::BlockImportOperation; | ||
|
|
||
| /// Build the genesis block, including the extrinsics found in storage at EXTRINSIC_KEY. | ||
| /// The extrinsics are not checked for validity, nor executed, so the values in storage must be placed manually. | ||
| /// This can be done by using the `assimilate_storage` function. | ||
| fn build_genesis_block(self) -> sp_blockchain::Result<(Block, Self::BlockImportOperation)> { | ||
| // We build it here to gain mutable access to the storage. | ||
| let mut genesis_storage = self | ||
| .build_genesis_storage | ||
| .build_storage() | ||
| .map_err(sp_blockchain::Error::Storage)?; | ||
|
|
||
| let state_version = | ||
| sc_chain_spec::resolve_state_version_from_wasm(&genesis_storage, &self.executor)?; | ||
|
|
||
| let extrinsics = match genesis_storage.top.remove(crate::EXTRINSIC_KEY) { | ||
| Some(v) => <Vec<<Block as BlockT>::Extrinsic>>::decode(&mut &v[..]).unwrap_or_default(), | ||
| None => Vec::new(), | ||
| }; | ||
|
|
||
| let extrinsics_root = | ||
| <<<Block as BlockT>::Header as HeaderT>::Hashing as HashT>::ordered_trie_root( | ||
| extrinsics.iter().map(Encode::encode).collect(), | ||
| state_version, | ||
| ); | ||
|
|
||
| let mut op = self.backend.begin_operation()?; | ||
| let state_root = | ||
| op.set_genesis_state(genesis_storage, self.commit_genesis_state, state_version)?; | ||
|
|
||
| let block = Block::new( | ||
| HeaderT::new( | ||
| Zero::zero(), | ||
| extrinsics_root, | ||
| state_root, | ||
| Default::default(), | ||
| Default::default(), | ||
| ), | ||
| extrinsics, | ||
| ); | ||
|
|
||
| Ok((block, op)) | ||
| } | ||
| } | ||
|
|
||
| /// Assimilate the storage into the genesis block. | ||
| /// This is done by inserting the genesis extrinsics into the genesis block, along with their outputs. | ||
| /// Make sure to pass the transactions in order: the inherents should be first, then the extrinsics. | ||
| pub fn assimilate_storage<V: Encode + TypeInfo, C: Encode + TypeInfo>( | ||
| storage: &mut Storage, | ||
| genesis_transactions: Vec<Transaction<V, C>>, | ||
| ) -> Result<(), String> { | ||
| storage | ||
| .top | ||
| .insert(EXTRINSIC_KEY.to_vec(), genesis_transactions.encode()); | ||
|
|
||
| for tx in genesis_transactions { | ||
| ensure!( | ||
| tx.inputs.is_empty() && tx.peeks.is_empty(), | ||
| "Genesis transactions must not have any inputs or peeks." | ||
| ); | ||
| let tx_hash = BlakeTwo256::hash_of(&tx.encode()); | ||
| for (index, utxo) in tx.outputs.iter().enumerate() { | ||
| let output_ref = OutputRef { | ||
| tx_hash, | ||
| index: index as u32, | ||
| }; | ||
| storage.top.insert(output_ref.encode(), utxo.encode()); | ||
| } | ||
| } | ||
|
|
||
| Ok(()) | ||
| } |
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