@nori-zk/mina-token-bridge/build/rx/topics.js

Nori ethereum state settelment and nETH token bridge zkApp

import { filter, map, shareReplay } from 'rxjs';
/**
 * Returns an observable emitting the bridge's current processing state.
 *
 * Filters for messages from the `state.bridge` topic, ignoring any with `elapsed_sec`
 * set to `'unknown'`, as those do not represent valid state data.
 *
 * The observable emits objects containing the current stage, slot/block input/output
 * positions, elapsed time in seconds, and details about the last finalized job—
 * if known.
 *
 * The stream is shared and replayed to all subscribers using `shareReplay(1)`.
 *
 * @param bridgeSocket$ WebSocket connection to the bridge service.
 * @returns Observable emitting bridge state updates.
 */
export const getBridgeStateTopic$ = (bridgeSocket$) => bridgeSocket$.asObservable().pipe(
// Filter by topic and suppress events when the state is 'unknown'
filter((message) => message.topic === 'state.bridge' &&
    message.extension.elapsed_sec !== 'unknown'), map((message) => message.extension)).pipe(shareReplay(1));
/**
 * Returns an observable emitting bridge timing data related to transition notices.
 *
 * Filters for messages from the `timings.notices.transition` topic.
 * Emits raw transition timing metadata from the bridge without transformation.
 *
 * The stream is shared and replayed to all subscribers using `shareReplay(1)`.
 *
 * @param bridgeSocket$ WebSocket connection to the bridge service.
 * @returns Observable emitting transition timing updates.
 */
export const getBridgeTimingsTopic$ = (bridgeSocket$) => bridgeSocket$
    .asObservable()
    .pipe(
// Filter by topic and suppress events when the state is 'unknown'
filter((message) => message.topic === 'timings.notices.transition'))
    .pipe(shareReplay(1));
/**
 * Returns an observable emitting the current Ethereum finality state.
 *
 * Filters for messages from the `state.eth` topic, discarding any with
 * `latest_finality_block_number` set to `'unknown'`.
 *
 * Emits the latest known finality slot and block number from the Ethereum network.
 * The stream is shared and replayed to all subscribers using `shareReplay(1)`.
 *
 * @param bridgeSocket$ WebSocket connection to the bridge service.
 * @returns Observable emitting Ethereum finality state updates.
 */
export const getEthStateTopic$ = (bridgeSocket$) => bridgeSocket$.asObservable().pipe(
// Filter by topic and suppress events when the state is 'unknown'
filter((message) => message.topic === 'state.eth' &&
    message.extension.latest_finality_block_number !== 'unknown'), map((message) => message.extension)).pipe(shareReplay(1));
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