515 lines
18 KiB
Rust
515 lines
18 KiB
Rust
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// Copyright (C) 2020 Éloïs SANCHEZ.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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use crate::*;
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pub(crate) type ScriptsHash = HashMap<WalletScriptV10, Hash>;
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fn get_script_hash(script: &WalletScriptV10, scripts_hash: &mut ScriptsHash) -> Hash {
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if let Some(script_hash) = scripts_hash.get(script) {
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*script_hash
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} else {
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let script_hash = Hash::compute(script.to_string().as_bytes());
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scripts_hash.insert(script.clone(), script_hash);
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script_hash
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}
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}
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#[allow(clippy::too_many_arguments)]
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pub(crate) fn apply_tx<B: Backend>(
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current_blockstamp: Blockstamp,
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current_time: i64,
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gva_db: &mut GvaV1DbTxRw<B::Col>,
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scripts_hash: &mut ScriptsHash,
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tx_hash: Hash,
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tx: &TransactionDocumentV10,
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txs_by_issuer_mem: &mut HashMap<WalletHashWithBnV1Db, BTreeSet<Hash>>,
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txs_by_recipient_mem: &mut HashMap<WalletHashWithBnV1Db, BTreeSet<Hash>>,
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) -> KvResult<()> {
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let mut issuers_scripts_hashs = BTreeSet::new();
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for input in tx.get_inputs() {
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let (account_script_hash, account_script) = match input.id {
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SourceIdV10::Utxo(utxo_id) => {
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// Get issuer script & written block
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let db_tx_origin = gva_db
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.txs
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.get(&HashKeyV2::from_ref(&utxo_id.tx_hash))?
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.ok_or_else(|| {
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KvError::DbCorrupted(format!("Not found origin tx of uxto {}", utxo_id))
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})?;
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let utxo_script = db_tx_origin.tx.get_outputs()[utxo_id.output_index]
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.conditions
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.script
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.clone();
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let utxo_script_hash = get_script_hash(&utxo_script, scripts_hash);
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// Remove consumed UTXOs
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super::utxos::remove_utxo_v10::<B>(
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&mut gva_db.scripts_by_pubkey,
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&mut gva_db.gva_utxos,
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utxo_id,
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&utxo_script,
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utxo_script_hash,
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db_tx_origin.written_block.number.0,
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)?;
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// Return utxo_script with hash
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(utxo_script_hash, utxo_script)
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}
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SourceIdV10::Ud(UdSourceIdV10 { issuer, .. }) => {
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let script = WalletScriptV10::single_sig(issuer);
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(Hash::compute(script.to_string().as_bytes()), script)
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}
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};
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issuers_scripts_hashs.insert(account_script_hash);
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// Insert on col `txs_by_issuer`
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txs_by_issuer_mem
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.entry(WalletHashWithBnV1Db::new(
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account_script_hash,
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current_blockstamp.number,
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))
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.or_default()
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.insert(tx_hash);
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// Decrease account balance
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decrease_account_balance::<B>(
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account_script,
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account_script_hash,
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&mut gva_db.balances,
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input.amount,
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&mut gva_db.gva_identities,
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false,
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&mut gva_db.txs_by_recipient,
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)?;
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}
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for (output_index, output) in tx.get_outputs().iter().enumerate() {
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let utxo_script_hash = get_script_hash(&output.conditions.script, scripts_hash);
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// Insert created UTXOs
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super::utxos::write_utxo_v10::<B>(
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&mut gva_db.scripts_by_pubkey,
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&mut gva_db.gva_utxos,
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UtxoV10 {
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id: UtxoIdV10 {
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tx_hash,
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output_index,
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},
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amount: output.amount,
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script: &output.conditions.script,
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written_block: current_blockstamp.number,
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},
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utxo_script_hash,
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)?;
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// Insert on col `txs_by_recipient`
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if !issuers_scripts_hashs.contains(&utxo_script_hash) {
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txs_by_recipient_mem
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.entry(WalletHashWithBnV1Db::new(
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utxo_script_hash,
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current_blockstamp.number,
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))
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.or_default()
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.insert(tx_hash);
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}
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// Increase account balance
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let balance = gva_db
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.balances
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.get(WalletConditionsV2::from_ref(&output.conditions.script))?
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.unwrap_or_default();
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gva_db.balances.upsert(
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WalletConditionsV2(output.conditions.script.clone()),
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SourceAmountValV2(balance.0 + output.amount),
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);
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}
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// Insert tx itself
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gva_db.txs.upsert(
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HashKeyV2(tx_hash),
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GvaTxDbV1 {
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tx: tx.clone(),
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written_block: current_blockstamp,
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written_time: current_time,
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},
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);
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Ok(())
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}
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pub(crate) fn revert_tx<B: Backend>(
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block_number: BlockNumber,
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gva_db: &mut GvaV1DbTxRw<B::Col>,
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scripts_hash: &mut ScriptsHash,
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tx_hash: &Hash,
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) -> KvResult<Option<TransactionDocumentV10>> {
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if let Some(tx_db) = gva_db.txs.get(&HashKeyV2::from_ref(tx_hash))? {
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use dubp::documents::transaction::TransactionDocumentTrait as _;
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for (output_index, output) in tx_db.tx.get_outputs().iter().enumerate() {
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let script = &output.conditions.script;
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let utxo_script_hash = get_script_hash(&script, scripts_hash);
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// Remove UTXOs created by this tx
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super::utxos::remove_utxo_v10::<B>(
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&mut gva_db.scripts_by_pubkey,
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&mut gva_db.gva_utxos,
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UtxoIdV10 {
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tx_hash: *tx_hash,
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output_index,
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},
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script,
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utxo_script_hash,
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block_number.0,
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)?;
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// Remove on col `txs_by_recipient`
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let k = WalletHashWithBnV1Db::new(utxo_script_hash, block_number);
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gva_db.txs_by_recipient.remove(k);
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// Decrease account balance
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decrease_account_balance::<B>(
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script.clone(),
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utxo_script_hash,
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&mut gva_db.balances,
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output.amount,
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&mut gva_db.gva_identities,
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true,
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&mut gva_db.txs_by_recipient,
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)?;
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}
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// Recreate UTXOs consumed by this tx (and update balance)
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for input in tx_db.tx.get_inputs() {
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let (account_script_hash, account_script) = match input.id {
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SourceIdV10::Utxo(utxo_id) => {
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let db_tx_origin = gva_db
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.txs
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.get(&HashKeyV2::from_ref(&utxo_id.tx_hash))?
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.ok_or_else(|| {
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KvError::DbCorrupted(format!("Not found origin tx of uxto {}", utxo_id))
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})?;
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let utxo_script = db_tx_origin.tx.get_outputs()[utxo_id.output_index]
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.conditions
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.script
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.clone();
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let utxo_script_hash = get_script_hash(&utxo_script, scripts_hash);
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super::utxos::write_utxo_v10::<B>(
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&mut gva_db.scripts_by_pubkey,
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&mut gva_db.gva_utxos,
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UtxoV10 {
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id: utxo_id,
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amount: input.amount,
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script: &utxo_script,
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written_block: db_tx_origin.written_block.number,
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},
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utxo_script_hash,
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)?;
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// Return utxo_script
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(utxo_script_hash, utxo_script)
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}
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SourceIdV10::Ud(UdSourceIdV10 { issuer, .. }) => {
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let script = WalletScriptV10::single_sig(issuer);
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(Hash::compute(script.to_string().as_bytes()), script)
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}
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};
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// Remove on col `txs_by_issuer`
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gva_db
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.txs_by_issuer
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.remove(WalletHashWithBnV1Db::new(account_script_hash, block_number));
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// Increase account balance
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let balance = gva_db
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.balances
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.get(WalletConditionsV2::from_ref(&account_script))?
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.unwrap_or_default();
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gva_db.balances.upsert(
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WalletConditionsV2(account_script),
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SourceAmountValV2(balance.0 + input.amount),
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);
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}
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// Remove tx itself
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gva_db.txs.remove(HashKeyV2(*tx_hash));
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Ok(Some(tx_db.tx))
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} else {
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Ok(None)
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}
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}
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fn decrease_account_balance<B: Backend>(
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account_script: WalletScriptV10,
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account_script_hash: Hash,
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balances: &mut TxColRw<B::Col, BalancesEvent>,
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decrease_amount: SourceAmount,
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identities: &mut TxColRw<B::Col, GvaIdentitiesEvent>,
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revert: bool,
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txs_by_recipients: &mut TxColRw<B::Col, TxsByRecipientEvent>,
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) -> KvResult<()> {
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if let Some(SourceAmountValV2(balance)) =
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balances.get(WalletConditionsV2::from_ref(&account_script))?
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{
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let new_balance = balance - decrease_amount;
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let remove_balance = if revert && new_balance == SourceAmount::ZERO {
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let (k_min, k_max) = WalletHashWithBnV1Db::wallet_hash_interval(account_script_hash);
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if txs_by_recipients
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.iter(k_min..k_max, |it| it.keys().next_res())?
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.is_some()
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{
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false
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} else if let Some(pubkey) = account_script.as_single_sig() {
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if let Some(idty) = identities.get(&PubKeyKeyV2(pubkey))? {
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idty.first_ud.is_none()
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} else {
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true
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}
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} else {
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true
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}
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} else {
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false
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};
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if remove_balance {
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balances.remove(WalletConditionsV2(account_script));
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} else {
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balances.upsert(
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WalletConditionsV2(account_script),
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SourceAmountValV2(new_balance),
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);
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}
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}
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Ok(())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use dubp::{
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crypto::keys::ed25519::Ed25519KeyPair, crypto::keys::KeyPair as _,
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documents::smallvec::smallvec as svec, documents::transaction::v10::*,
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documents::transaction::UTXOConditions,
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};
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use duniter_core::dbs::BlockMetaV2;
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use maplit::btreeset;
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#[test]
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fn test_apply_tx() -> KvResult<()> {
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let kp = Ed25519KeyPair::generate_random().expect("gen rand kp");
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let kp2 = Ed25519KeyPair::generate_random().expect("gen rand kp");
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let ud0_amount = SourceAmount::with_base0(1000);
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let o1_amount = ud0_amount - SourceAmount::with_base0(600);
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let o2_amount = ud0_amount - SourceAmount::with_base0(400);
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let gva_db = GvaV1Db::<Mem>::open(MemConf::default())?;
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let b0 = BlockMetaV2 {
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dividend: Some(ud0_amount),
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..Default::default()
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};
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let current_blockstamp = b0.blockstamp();
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let pk = kp.public_key();
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//println!("TMP pk1={}", pk);
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let pk2 = kp2.public_key();
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//println!("TMP pk2={}", pk2);
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let script = WalletScriptV10::single_sig(pk);
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let script2 = WalletScriptV10::single_sig(pk2);
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let script_hash = Hash::compute(script.to_string().as_bytes());
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let script2_hash = Hash::compute(script2.to_string().as_bytes());
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gva_db.balances_write().upsert(
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WalletConditionsV2(script.clone()),
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SourceAmountValV2(ud0_amount),
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)?;
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let tx1 = TransactionDocumentV10Builder {
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currency: "test",
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blockstamp: current_blockstamp,
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locktime: 0,
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issuers: svec![pk],
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inputs: &[TransactionInputV10 {
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amount: ud0_amount,
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id: SourceIdV10::Ud(UdSourceIdV10 {
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issuer: pk,
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block_number: BlockNumber(0),
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}),
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}],
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unlocks: &[TransactionInputUnlocksV10::default()],
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outputs: svec![
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TransactionOutputV10 {
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amount: o1_amount,
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conditions: UTXOConditions::from(script2.clone()),
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},
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TransactionOutputV10 {
|
||
|
|
amount: o2_amount,
|
||
|
|
conditions: UTXOConditions::from(script.clone()),
|
||
|
|
}
|
||
|
|
],
|
||
|
|
comment: "",
|
||
|
|
hash: None,
|
||
|
|
}
|
||
|
|
.build_and_sign(vec![kp.generate_signator()]);
|
||
|
|
let tx1_hash = tx1.get_hash();
|
||
|
|
|
||
|
|
let mut scripts_hash = HashMap::new();
|
||
|
|
|
||
|
|
let mut txs_by_issuer_mem = HashMap::new();
|
||
|
|
let mut txs_by_recipient_mem = HashMap::new();
|
||
|
|
(&gva_db).write(|mut db| {
|
||
|
|
apply_tx::<Mem>(
|
||
|
|
current_blockstamp,
|
||
|
|
b0.median_time as i64,
|
||
|
|
&mut db,
|
||
|
|
&mut scripts_hash,
|
||
|
|
tx1_hash,
|
||
|
|
&tx1,
|
||
|
|
&mut txs_by_issuer_mem,
|
||
|
|
&mut txs_by_recipient_mem,
|
||
|
|
)
|
||
|
|
})?;
|
||
|
|
|
||
|
|
assert_eq!(txs_by_issuer_mem.len(), 1);
|
||
|
|
assert_eq!(
|
||
|
|
txs_by_issuer_mem.get(&WalletHashWithBnV1Db::new(script_hash, BlockNumber(0))),
|
||
|
|
Some(&btreeset![tx1_hash])
|
||
|
|
);
|
||
|
|
assert_eq!(txs_by_recipient_mem.len(), 1);
|
||
|
|
assert_eq!(
|
||
|
|
txs_by_recipient_mem.get(&WalletHashWithBnV1Db::new(script2_hash, BlockNumber(0))),
|
||
|
|
Some(&btreeset![tx1_hash])
|
||
|
|
);
|
||
|
|
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script2))?,
|
||
|
|
Some(SourceAmountValV2(o1_amount))
|
||
|
|
);
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script))?,
|
||
|
|
Some(SourceAmountValV2(o2_amount))
|
||
|
|
);
|
||
|
|
|
||
|
|
let tx2 = TransactionDocumentV10Builder {
|
||
|
|
currency: "test",
|
||
|
|
blockstamp: current_blockstamp,
|
||
|
|
locktime: 0,
|
||
|
|
issuers: svec![pk2],
|
||
|
|
inputs: &[TransactionInputV10 {
|
||
|
|
amount: o1_amount,
|
||
|
|
id: SourceIdV10::Utxo(UtxoIdV10 {
|
||
|
|
tx_hash: tx1_hash,
|
||
|
|
output_index: 0,
|
||
|
|
}),
|
||
|
|
}],
|
||
|
|
unlocks: &[TransactionInputUnlocksV10::default()],
|
||
|
|
outputs: svec![TransactionOutputV10 {
|
||
|
|
amount: o1_amount,
|
||
|
|
conditions: UTXOConditions::from(script.clone()),
|
||
|
|
},],
|
||
|
|
comment: "",
|
||
|
|
hash: None,
|
||
|
|
}
|
||
|
|
.build_and_sign(vec![kp.generate_signator()]);
|
||
|
|
let tx2_hash = tx2.get_hash();
|
||
|
|
|
||
|
|
let mut txs_by_issuer_mem = HashMap::new();
|
||
|
|
let mut txs_by_recipient_mem = HashMap::new();
|
||
|
|
(&gva_db).write(|mut db| {
|
||
|
|
apply_tx::<Mem>(
|
||
|
|
current_blockstamp,
|
||
|
|
b0.median_time as i64,
|
||
|
|
&mut db,
|
||
|
|
&mut scripts_hash,
|
||
|
|
tx2_hash,
|
||
|
|
&tx2,
|
||
|
|
&mut txs_by_issuer_mem,
|
||
|
|
&mut txs_by_recipient_mem,
|
||
|
|
)
|
||
|
|
})?;
|
||
|
|
|
||
|
|
assert_eq!(txs_by_issuer_mem.len(), 1);
|
||
|
|
assert_eq!(
|
||
|
|
txs_by_issuer_mem.get(&WalletHashWithBnV1Db::new(script2_hash, BlockNumber(0))),
|
||
|
|
Some(&btreeset![tx2_hash])
|
||
|
|
);
|
||
|
|
assert_eq!(txs_by_recipient_mem.len(), 1);
|
||
|
|
assert_eq!(
|
||
|
|
txs_by_recipient_mem.get(&WalletHashWithBnV1Db::new(script_hash, BlockNumber(0))),
|
||
|
|
Some(&btreeset![tx2_hash])
|
||
|
|
);
|
||
|
|
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script2))?,
|
||
|
|
Some(SourceAmountValV2(SourceAmount::ZERO))
|
||
|
|
);
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script))?,
|
||
|
|
Some(SourceAmountValV2(ud0_amount))
|
||
|
|
);
|
||
|
|
|
||
|
|
(&gva_db).write(|mut db| {
|
||
|
|
revert_tx::<Mem>(
|
||
|
|
current_blockstamp.number,
|
||
|
|
&mut db,
|
||
|
|
&mut scripts_hash,
|
||
|
|
&tx2_hash,
|
||
|
|
)
|
||
|
|
})?;
|
||
|
|
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script2))?,
|
||
|
|
Some(SourceAmountValV2(o1_amount))
|
||
|
|
);
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script))?,
|
||
|
|
Some(SourceAmountValV2(o2_amount))
|
||
|
|
);
|
||
|
|
|
||
|
|
(&gva_db).write(|mut db| {
|
||
|
|
revert_tx::<Mem>(
|
||
|
|
current_blockstamp.number,
|
||
|
|
&mut db,
|
||
|
|
&mut scripts_hash,
|
||
|
|
&tx1_hash,
|
||
|
|
)
|
||
|
|
})?;
|
||
|
|
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script2))?,
|
||
|
|
None
|
||
|
|
);
|
||
|
|
assert_eq!(
|
||
|
|
gva_db
|
||
|
|
.balances()
|
||
|
|
.get(WalletConditionsV2::from_ref(&script))?,
|
||
|
|
Some(SourceAmountValV2(ud0_amount))
|
||
|
|
);
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
}
|