@kamino-finance/klend-sdk
Version:
Typescript SDK for interacting with the Kamino Lending (klend) protocol
191 lines (173 loc) • 5.99 kB
text/typescript
/* eslint-disable @typescript-eslint/no-unused-vars */
import {
address,
Address,
fetchEncodedAccount,
fetchEncodedAccounts,
GetAccountInfoApi,
GetMultipleAccountsApi,
Rpc,
} from "@solana/kit"
/* eslint-enable @typescript-eslint/no-unused-vars */
import BN from "bn.js" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as borsh from "@coral-xyz/borsh" // eslint-disable-line @typescript-eslint/no-unused-vars
import { borshAddress } from "../utils" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars
import { PROGRAM_ID } from "../programId"
export interface BufferRelayerAccountDataFields {
name: Array<number>
queuePubkey: Address
escrow: Address
authority: Address
jobPubkey: Address
jobHash: Array<number>
minUpdateDelaySeconds: number
isLocked: boolean
currentRound: types.BufferRelayerRoundFields
latestConfirmedRound: types.BufferRelayerRoundFields
result: Uint8Array
}
export interface BufferRelayerAccountDataJSON {
name: Array<number>
queuePubkey: string
escrow: string
authority: string
jobPubkey: string
jobHash: Array<number>
minUpdateDelaySeconds: number
isLocked: boolean
currentRound: types.BufferRelayerRoundJSON
latestConfirmedRound: types.BufferRelayerRoundJSON
result: Array<number>
}
export class BufferRelayerAccountData {
readonly name: Array<number>
readonly queuePubkey: Address
readonly escrow: Address
readonly authority: Address
readonly jobPubkey: Address
readonly jobHash: Array<number>
readonly minUpdateDelaySeconds: number
readonly isLocked: boolean
readonly currentRound: types.BufferRelayerRound
readonly latestConfirmedRound: types.BufferRelayerRound
readonly result: Uint8Array
static readonly discriminator = Buffer.from([
50, 35, 51, 115, 169, 219, 158, 52,
])
static readonly layout = borsh.struct<BufferRelayerAccountData>([
borsh.array(borsh.u8(), 32, "name"),
borshAddress("queuePubkey"),
borshAddress("escrow"),
borshAddress("authority"),
borshAddress("jobPubkey"),
borsh.array(borsh.u8(), 32, "jobHash"),
borsh.u32("minUpdateDelaySeconds"),
borsh.bool("isLocked"),
types.BufferRelayerRound.layout("currentRound"),
types.BufferRelayerRound.layout("latestConfirmedRound"),
borsh.vecU8("result"),
])
constructor(fields: BufferRelayerAccountDataFields) {
this.name = fields.name
this.queuePubkey = fields.queuePubkey
this.escrow = fields.escrow
this.authority = fields.authority
this.jobPubkey = fields.jobPubkey
this.jobHash = fields.jobHash
this.minUpdateDelaySeconds = fields.minUpdateDelaySeconds
this.isLocked = fields.isLocked
this.currentRound = new types.BufferRelayerRound({ ...fields.currentRound })
this.latestConfirmedRound = new types.BufferRelayerRound({
...fields.latestConfirmedRound,
})
this.result = fields.result
}
static async fetch(
rpc: Rpc<GetAccountInfoApi>,
address: Address,
programId: Address = PROGRAM_ID
): Promise<BufferRelayerAccountData | null> {
const info = await fetchEncodedAccount(rpc, address)
if (!info.exists) {
return null
}
if (info.programAddress !== programId) {
throw new Error("account doesn't belong to this program")
}
return this.decode(Buffer.from(info.data))
}
static async fetchMultiple(
rpc: Rpc<GetMultipleAccountsApi>,
addresses: Address[],
programId: Address = PROGRAM_ID
): Promise<Array<BufferRelayerAccountData | null>> {
const infos = await fetchEncodedAccounts(rpc, addresses)
return infos.map((info) => {
if (!info.exists) {
return null
}
if (info.programAddress !== programId) {
throw new Error("account doesn't belong to this program")
}
return this.decode(Buffer.from(info.data))
})
}
static decode(data: Buffer): BufferRelayerAccountData {
if (!data.slice(0, 8).equals(BufferRelayerAccountData.discriminator)) {
throw new Error("invalid account discriminator")
}
const dec = BufferRelayerAccountData.layout.decode(data.slice(8))
return new BufferRelayerAccountData({
name: dec.name,
queuePubkey: dec.queuePubkey,
escrow: dec.escrow,
authority: dec.authority,
jobPubkey: dec.jobPubkey,
jobHash: dec.jobHash,
minUpdateDelaySeconds: dec.minUpdateDelaySeconds,
isLocked: dec.isLocked,
currentRound: types.BufferRelayerRound.fromDecoded(dec.currentRound),
latestConfirmedRound: types.BufferRelayerRound.fromDecoded(
dec.latestConfirmedRound
),
result: new Uint8Array(
dec.result.buffer,
dec.result.byteOffset,
dec.result.length
),
})
}
toJSON(): BufferRelayerAccountDataJSON {
return {
name: this.name,
queuePubkey: this.queuePubkey,
escrow: this.escrow,
authority: this.authority,
jobPubkey: this.jobPubkey,
jobHash: this.jobHash,
minUpdateDelaySeconds: this.minUpdateDelaySeconds,
isLocked: this.isLocked,
currentRound: this.currentRound.toJSON(),
latestConfirmedRound: this.latestConfirmedRound.toJSON(),
result: Array.from(this.result.values()),
}
}
static fromJSON(obj: BufferRelayerAccountDataJSON): BufferRelayerAccountData {
return new BufferRelayerAccountData({
name: obj.name,
queuePubkey: address(obj.queuePubkey),
escrow: address(obj.escrow),
authority: address(obj.authority),
jobPubkey: address(obj.jobPubkey),
jobHash: obj.jobHash,
minUpdateDelaySeconds: obj.minUpdateDelaySeconds,
isLocked: obj.isLocked,
currentRound: types.BufferRelayerRound.fromJSON(obj.currentRound),
latestConfirmedRound: types.BufferRelayerRound.fromJSON(
obj.latestConfirmedRound
),
result: Uint8Array.from(obj.result),
})
}
}