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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 | 1x | import { BitField } from "@node-lightning/core";
import { ShortChannelId } from "@node-lightning/core";
import { OutPoint } from "@node-lightning/core";
import { ChannelSettings } from "./channel-settings";
export class Channel {
/**
* Short channel identifier for the channel that points to the funding
* transaction on the blockchain.
*/
public shortChannelId: ShortChannelId;
/**
* Obtained after verifying the transaction is a valid
* channel funding transaction and is still a UTXO
*/
public channelPoint: OutPoint;
/**
* Public key of the first node, as ordered by DER encoding of the
* 33-byte secp256k1 public key.
*/
public nodeId1: Buffer;
/**
* Public key of the second node, as ordered by DER encoding of the
* 33-byte secp256k1 public key.
*/
public nodeId2: Buffer;
/**
* Channel features
*/
public features: BitField;
/**
* Routing policy for the first node
*/
public node1Settings: ChannelSettings;
/**
* Routing policy for the second node
*/
public node2Settings: ChannelSettings;
/**
* Capacity of the channel as determined by the funding transaction
* output amount.
*/
public capacity: bigint;
/**
* Gets the most recently updated timestamp based on the settings
* from the two nodes
*/
public get lastUpdate(): number {
const t1 = (this.node1Settings && this.node1Settings.timestamp) || 0;
const t2 = (this.node2Settings && this.node2Settings.timestamp) || 0;
return Math.max(t1, t2);
}
/**
* Routable when nodes are known and validated and at least one
* node has broadcast its relay fees
*/
get isRoutable(): boolean {
return !!this.nodeId1 && !!this.nodeId2 && !!(this.node1Settings || this.node2Settings);
}
/**
* Update channel settings
*/
public updateSettings(settings: ChannelSettings): boolean {
if (settings.direction === 0) {
if (this.node1Settings && this.node1Settings.timestamp > settings.timestamp) {
return false;
}
this.node1Settings = settings;
return true;
} else {
if (this.node2Settings && this.node2Settings.timestamp > settings.timestamp) {
return false;
}
this.node2Settings = settings;
return true;
}
}
}
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