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Refactor channel id conversion utils

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nymkappa 2022-08-10 16:58:29 +02:00
parent 48a0a6c7e3
commit dc7231537f
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GPG Key ID: E155910B16E8BD04
2 changed files with 15 additions and 15 deletions
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17
backend/src/api/common.ts
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@ -1,6 +1,5 @@
import { CpfpInfo, TransactionExtended, TransactionStripped } from '../mempool.interfaces';
import config from '../config';
import { convertChannelId } from './lightning/clightning/clightning-convert';
export class Common {
static nativeAssetId = config.MEMPOOL.NETWORK === 'liquidtestnet' ?
'144c654344aa716d6f3abcc1ca90e5641e4e2a7f633bc09fe3baf64585819a49'
@ -193,15 +192,23 @@ export class Common {
date.setUTCMilliseconds(0);
}
static channelShortIdToIntegerId(id: string): string {
if (config.LIGHTNING.BACKEND === 'lnd') {
return id;
static channelShortIdToIntegerId(channelId: string): string {
if (channelId.indexOf('x') === -1) { // Already an integer id
return channelId;
}
return convertChannelId(id);
if (channelId.indexOf('/') !== -1) { // Topology import
channelId = channelId.slice(0, -2);
}
const s = channelId.split('x').map(part => BigInt(part));
return ((s[0] << 40n) | (s[1] << 16n) | s[2]).toString();
}
/** Decodes a channel id returned by lnd as uint64 to a short channel id */
static channelIntegerIdToShortId(id: string): string {
if (id.indexOf('x') !== -1) { // Already a short id
return id;
}
const n = BigInt(id);
return [
n >> 40n, // nth block

13
backend/src/api/lightning/clightning/clightning-convert.ts
View File

@ -1,6 +1,7 @@
import { ILightningApi } from '../lightning-api.interface';
import FundingTxFetcher from '../../../tasks/lightning/sync-tasks/funding-tx-fetcher';
import logger from '../../../logger';
import { Common } from '../../common';
/**
* Convert a clightning "listnode" entry to a lnd node entry
@ -70,14 +71,6 @@ export async function convertAndmergeBidirectionalChannels(clChannels: any[]): P
return consolidatedChannelList;
}
export function convertChannelId(channelId): string {
if (channelId.indexOf('/') !== -1) {
channelId = channelId.slice(0, -2);
}
const s = channelId.split('x').map(part => BigInt(part));
return ((s[0] << 40n) | (s[1] << 16n) | s[2]).toString();
}
/**
* Convert two clightning "getchannels" entries into a full a lnd "describegraph.edges" format
* In this case, clightning knows the channel policy for both nodes
@ -90,7 +83,7 @@ async function buildFullChannel(clChannelA: any, clChannelB: any): Promise<ILigh
const outputIdx = parts[2];
return {
channel_id: convertChannelId(clChannelA.short_channel_id),
channel_id: Common.channelShortIdToIntegerId(clChannelA.short_channel_id),
capacity: clChannelA.satoshis,
last_update: lastUpdate,
node1_policy: convertPolicy(clChannelA),
@ -111,7 +104,7 @@ async function buildIncompleteChannel(clChannel: any): Promise<ILightningApi.Cha
const outputIdx = parts[2];
return {
channel_id: convertChannelId(clChannel.short_channel_id),
channel_id: Common.channelShortIdToIntegerId(clChannel.short_channel_id),
capacity: clChannel.satoshis,
last_update: clChannel.last_update ?? 0,
node1_policy: convertPolicy(clChannel),