use std::collections::HashSet;
use schemerz_rusqlite::RusqliteMigration;
use uuid::Uuid;
use crate::wallet::init::WalletMigrationError;
use super::v_transactions_shielding_balance;
pub const MIGRATION_ID: Uuid = Uuid::from_u128(0xdba47c86_13b5_4601_94b2_0cde0abe1e45);
const DEPENDENCIES: &[Uuid] = &[v_transactions_shielding_balance::MIGRATION_ID];
pub(super) struct Migration;
impl schemerz::Migration<Uuid> for Migration {
fn id(&self) -> Uuid {
MIGRATION_ID
}
fn dependencies(&self) -> HashSet<Uuid> {
DEPENDENCIES.iter().copied().collect()
}
fn description(&self) -> &'static str {
"Fixes a bug in v_transactions that was omitting value from identically-valued notes."
}
}
impl RusqliteMigration for Migration {
type Error = WalletMigrationError;
fn up(&self, transaction: &rusqlite::Transaction) -> Result<(), Self::Error> {
transaction.execute_batch(
"DROP VIEW v_transactions;
CREATE VIEW v_transactions AS
WITH
notes AS (
SELECT sapling_received_notes.id_note AS id,
sapling_received_notes.account AS account_id,
transactions.block AS block,
transactions.txid AS txid,
2 AS pool,
sapling_received_notes.value AS value,
CASE
WHEN sapling_received_notes.is_change THEN 1
ELSE 0
END AS is_change,
CASE
WHEN sapling_received_notes.is_change THEN 0
ELSE 1
END AS received_count,
CASE
WHEN (sapling_received_notes.memo IS NULL OR sapling_received_notes.memo = X'F6')
THEN 0
ELSE 1
END AS memo_present
FROM sapling_received_notes
JOIN transactions
ON transactions.id_tx = sapling_received_notes.tx
UNION
SELECT utxos.id_utxo AS id,
utxos.received_by_account AS account_id,
utxos.height AS block,
utxos.prevout_txid AS txid,
0 AS pool,
utxos.value_zat AS value,
0 AS is_change,
1 AS received_count,
0 AS memo_present
FROM utxos
UNION
SELECT sapling_received_notes.id_note AS id,
sapling_received_notes.account AS account_id,
transactions.block AS block,
transactions.txid AS txid,
2 AS pool,
-sapling_received_notes.value AS value,
0 AS is_change,
0 AS received_count,
0 AS memo_present
FROM sapling_received_notes
JOIN transactions
ON transactions.id_tx = sapling_received_notes.spent
UNION
SELECT utxos.id_utxo AS id,
utxos.received_by_account AS account_id,
transactions.block AS block,
transactions.txid AS txid,
0 AS pool,
-utxos.value_zat AS value,
0 AS is_change,
0 AS received_count,
0 AS memo_present
FROM utxos
JOIN transactions
ON transactions.id_tx = utxos.spent_in_tx
),
sent_note_counts AS (
SELECT sent_notes.from_account AS account_id,
transactions.txid AS txid,
COUNT(DISTINCT sent_notes.id_note) as sent_notes,
SUM(
CASE
WHEN (sent_notes.memo IS NULL OR sent_notes.memo = X'F6' OR sapling_received_notes.tx IS NOT NULL)
THEN 0
ELSE 1
END
) AS memo_count
FROM sent_notes
JOIN transactions
ON transactions.id_tx = sent_notes.tx
LEFT JOIN sapling_received_notes
ON (sent_notes.tx, sent_notes.output_pool, sent_notes.output_index) =
(sapling_received_notes.tx, 2, sapling_received_notes.output_index)
WHERE COALESCE(sapling_received_notes.is_change, 0) = 0
GROUP BY account_id, txid
),
blocks_max_height AS (
SELECT MAX(blocks.height) as max_height FROM blocks
)
SELECT notes.account_id AS account_id,
notes.block AS mined_height,
notes.txid AS txid,
transactions.tx_index AS tx_index,
transactions.expiry_height AS expiry_height,
transactions.raw AS raw,
SUM(notes.value) AS account_balance_delta,
transactions.fee AS fee_paid,
SUM(notes.is_change) > 0 AS has_change,
MAX(COALESCE(sent_note_counts.sent_notes, 0)) AS sent_note_count,
SUM(notes.received_count) AS received_note_count,
SUM(notes.memo_present) + MAX(COALESCE(sent_note_counts.memo_count, 0)) AS memo_count,
blocks.time AS block_time,
(
blocks.height IS NULL
AND transactions.expiry_height BETWEEN 1 AND blocks_max_height.max_height
) AS expired_unmined
FROM notes
LEFT JOIN transactions
ON notes.txid = transactions.txid
JOIN blocks_max_height
LEFT JOIN blocks ON blocks.height = notes.block
LEFT JOIN sent_note_counts
ON sent_note_counts.account_id = notes.account_id
AND sent_note_counts.txid = notes.txid
GROUP BY notes.account_id, notes.txid;"
)?;
Ok(())
}
fn down(&self, _transaction: &rusqlite::Transaction) -> Result<(), Self::Error> {
Err(WalletMigrationError::CannotRevert(MIGRATION_ID))
}
}
#[cfg(test)]
mod tests {
use rand_chacha::ChaChaRng;
use rusqlite::{self, params};
use tempfile::NamedTempFile;
use zcash_keys::keys::UnifiedSpendingKey;
use zcash_protocol::consensus::Network;
use zip32::AccountId;
use crate::{
WalletDb,
testing::db::{test_clock, test_rng},
util::testing::FixedClock,
wallet::init::{WalletMigrator, migrations::v_transactions_net},
};
#[test]
fn v_transactions_note_uniqueness_migration() {
let data_file = NamedTempFile::new().unwrap();
let mut db_data = WalletDb::for_path(
data_file.path(),
Network::TestNetwork,
test_clock(),
test_rng(),
)
.unwrap();
WalletMigrator::new()
.ignore_seed_relevance()
.init_or_migrate_to(&mut db_data, &[v_transactions_net::MIGRATION_ID])
.unwrap();
let usk0 = UnifiedSpendingKey::from_seed(&db_data.params, &[0u8; 32][..], AccountId::ZERO)
.unwrap();
let ufvk0 = usk0.to_unified_full_viewing_key();
db_data
.conn
.execute(
"INSERT INTO accounts (account, ufvk) VALUES (0, ?)",
params![ufvk0.encode(&db_data.params)],
)
.unwrap();
db_data.conn.execute_batch(
"INSERT INTO blocks (height, hash, time, sapling_tree) VALUES (0, 0, 0, x'00');
INSERT INTO transactions (block, id_tx, txid) VALUES (0, 0, 'tx0');
INSERT INTO received_notes (tx, output_index, account, diversifier, value, rcm, nf, is_change)
VALUES (0, 0, 0, '', 2, '', 'nf_a', false);
INSERT INTO received_notes (tx, output_index, account, diversifier, value, rcm, nf, is_change)
VALUES (0, 3, 0, '', 2, '', 'nf_b', false);").unwrap();
let check_balance_delta = |db_data: &mut WalletDb<
rusqlite::Connection,
Network,
FixedClock,
ChaChaRng,
>,
expected_notes: i64| {
let mut q = db_data
.conn
.prepare(
"SELECT account_id, account_balance_delta, has_change, memo_count, sent_note_count, received_note_count
FROM v_transactions",
)
.unwrap();
let mut rows = q.query([]).unwrap();
let mut row_count = 0;
while let Some(row) = rows.next().unwrap() {
row_count += 1;
let account: i64 = row.get(0).unwrap();
let account_balance_delta: i64 = row.get(1).unwrap();
let has_change: bool = row.get(2).unwrap();
let memo_count: i64 = row.get(3).unwrap();
let sent_note_count: i64 = row.get(4).unwrap();
let received_note_count: i64 = row.get(5).unwrap();
match account {
0 => {
assert_eq!(account_balance_delta, 2 * expected_notes);
assert!(!has_change);
assert_eq!(memo_count, 0);
assert_eq!(sent_note_count, 0);
assert_eq!(received_note_count, expected_notes);
}
other => {
panic!("Account {other:?} is not expected to exist in the wallet.");
}
}
}
assert_eq!(row_count, 1);
};
check_balance_delta(&mut db_data, 1);
WalletMigrator::new()
.ignore_seed_relevance()
.init_or_migrate_to(&mut db_data, &[super::MIGRATION_ID])
.unwrap();
check_balance_delta(&mut db_data, 2);
}
}