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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | 42x 42x 42x 42x 42x 123x 124x 129x 129x 42x 123x 124x 128x 166x 1018x 315x 1018x 1018x 37x 87x 42x 33x 33x 33x 2810x 166x 1x 166x 43x 128x 106x 647x 647x 647x 19x 128x 1x 1x 117x 117x 117x 39x 8x | import { Cardano, UtxoProvider } from '@cardano-sdk/core';
import { Logger } from 'ts-log';
import { NEVER, Observable, combineLatest, concat, distinctUntilChanged, map, of, shareReplay, switchMap } from 'rxjs';
import { PersistentCollectionTrackerSubject, pollProvider, txInEquals, utxoEquals } from './util';
import { RetryBackoffConfig } from 'backoff-rxjs';
import { TxInFlight, UtxoTracker } from './types';
import { WalletStores } from '../persistence';
import { sortUtxoByTxIn } from '@cardano-sdk/input-selection';
import uniqWith from 'lodash/uniqWith.js';
export interface UtxoTrackerProps {
utxoProvider: UtxoProvider;
addresses$: Observable<Cardano.PaymentAddress[]>;
stores: Pick<WalletStores, 'utxo' | 'unspendableUtxo'>;
transactionsInFlight$: Observable<TxInFlight[]>;
history$: Observable<Cardano.HydratedTx[]>;
retryBackoffConfig: RetryBackoffConfig;
logger: Logger;
}
export interface UtxoTrackerInternals {
utxoSource$?: PersistentCollectionTrackerSubject<Cardano.Utxo>;
unspendableUtxoSource$?: PersistentCollectionTrackerSubject<Cardano.Utxo>;
}
export const createUtxoProvider = (
utxoProvider: UtxoProvider,
addresses$: Observable<Cardano.PaymentAddress[]>,
history$: Observable<Cardano.HydratedTx[]>,
retryBackoffConfig: RetryBackoffConfig,
logger: Logger
) =>
addresses$.pipe(
switchMap((paymentAddresses) =>
pollProvider({
equals: utxoEquals,
logger,
retryBackoffConfig,
sample: async () => {
const utxos = await utxoProvider.utxoByAddresses({ addresses: paymentAddresses });
return utxos.sort(sortUtxoByTxIn);
},
trigger$: history$
})
)
);
export const createUtxoTracker = (
{ utxoProvider, addresses$, stores, transactionsInFlight$, retryBackoffConfig, history$, logger }: UtxoTrackerProps,
{
utxoSource$ = new PersistentCollectionTrackerSubject<Cardano.Utxo>(
() => createUtxoProvider(utxoProvider, addresses$, history$, retryBackoffConfig, logger),
stores.utxo
),
unspendableUtxoSource$ = new PersistentCollectionTrackerSubject(
(stored) => (stored.length > 0 ? NEVER : concat(of([]), NEVER)),
stores.unspendableUtxo
)
}: UtxoTrackerInternals = {}
): UtxoTracker => {
const total$ = combineLatest([utxoSource$, transactionsInFlight$, addresses$]).pipe(
map(([onChainUtxo, transactionsInFlight, ownAddresses]) => [
...onChainUtxo.filter(([utxoTxIn]) => {
const utxoIsUsedInFlight = transactionsInFlight.some(({ body: { inputs } }) =>
inputs.some((input) => input.txId === utxoTxIn.txId && input.index === utxoTxIn.index)
);
utxoIsUsedInFlight &&
logger.debug('OnChain UTXO is already used in in-flight transaction. Excluding from total$.', utxoTxIn);
return !utxoIsUsedInFlight;
}),
...transactionsInFlight.flatMap(({ body: { outputs }, id }, txInFlightIndex) =>
outputs
.filter(
({ address }, outputIndex) =>
ownAddresses.includes(address) &&
// not already consumed by another tx in flight
!transactionsInFlight.some(
({ body: { inputs } }, i) =>
txInFlightIndex !== i && inputs.some((txIn) => txIn.txId === id && txIn.index === outputIndex)
)
)
.map((txOut): Cardano.Utxo => {
const txIn: Cardano.HydratedTxIn = {
address: txOut.address, // not necessarily correct in multi-address wallet
index: outputs.indexOf(txOut),
txId: id
};
logger.debug('New UTXO available from in-flight transactions. Including in total$.', txIn);
return [txIn, txOut];
})
)
]),
map((utxo) => {
const uniqueUtxo = uniqWith(utxo, ([a], [b]) => a.txId === b.txId && a.index === b.index);
if (uniqueUtxo.length !== utxo.length) {
logger.debug('Found duplicate UTxO in', utxo);
}
return uniqueUtxo;
}),
distinctUntilChanged((previous, current) => utxoEquals(previous, current)),
shareReplay(1)
);
const available$ = combineLatest([total$, unspendableUtxoSource$]).pipe(
// filter to utxo that are not included in in-flight transactions or unspendable
map(([utxo, unspendableUtxo]) =>
utxo.filter(([utxoTxIn]) => {
const txInIsUnspendable = unspendableUtxo.some(([unspendable]) => txInEquals(utxoTxIn, unspendable));
txInIsUnspendable && logger.debug('Exclude unspendable UTXO from availble$', utxoTxIn);
return !txInIsUnspendable;
})
),
distinctUntilChanged((previous, current) => utxoEquals(previous, current)),
shareReplay(1)
);
return {
available$,
setUnspendable: async (utxo) => {
logger.debug('setUnspendable', utxo);
unspendableUtxoSource$.next(utxo);
},
shutdown: () => {
utxoSource$.complete();
unspendableUtxoSource$.complete();
logger.debug('Shutdown');
},
total$,
unspendable$: combineLatest([unspendableUtxoSource$, total$]).pipe(
map(([unspendableUtxo, utxo]) =>
unspendableUtxo.filter(([unspendable]) => utxo.some(([utxoTxIn]) => txInEquals(utxoTxIn, unspendable)))
),
distinctUntilChanged((previous, current) => utxoEquals(previous, current)),
shareReplay(1)
)
};
};
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