@kamino-finance/klend-sdk
Version:
Typescript SDK for interacting with the Kamino Lending (klend) protocol
72 lines (67 loc) • 2.21 kB
text/typescript
/* eslint-disable @typescript-eslint/no-unused-vars */
import {
Address,
isSome,
IAccountMeta,
IAccountSignerMeta,
IInstruction,
Option,
TransactionSigner,
} 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 VrfPoolRequestArgs {
params: types.VrfPoolRequestParamsFields
}
export interface VrfPoolRequestAccounts {
authority: TransactionSigner
vrfPool: Address
escrow: Address
mint: Address
queue: Address
queueAuthority: Address
dataBuffer: Address
recentBlockhashes: Address
programState: Address
tokenProgram: Address
}
export const layout = borsh.struct([
types.VrfPoolRequestParams.layout("params"),
])
export function vrfPoolRequest(
args: VrfPoolRequestArgs,
accounts: VrfPoolRequestAccounts,
programAddress: Address = PROGRAM_ID
) {
const keys: Array<IAccountMeta | IAccountSignerMeta> = [
{
address: accounts.authority.address,
role: 2,
signer: accounts.authority,
},
{ address: accounts.vrfPool, role: 1 },
{ address: accounts.escrow, role: 1 },
{ address: accounts.mint, role: 0 },
{ address: accounts.queue, role: 1 },
{ address: accounts.queueAuthority, role: 0 },
{ address: accounts.dataBuffer, role: 0 },
{ address: accounts.recentBlockhashes, role: 0 },
{ address: accounts.programState, role: 0 },
{ address: accounts.tokenProgram, role: 0 },
]
const identifier = Buffer.from([67, 49, 182, 255, 222, 161, 116, 238])
const buffer = Buffer.alloc(1000)
const len = layout.encode(
{
params: types.VrfPoolRequestParams.toEncodable(args.params),
},
buffer
)
const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
const ix: IInstruction = { accounts: keys, programAddress, data }
return ix
}