@kamino-finance/klend-sdk
Version:
Typescript SDK for interacting with the Kamino Lending (klend) protocol
240 lines (235 loc) • 6.65 kB
text/typescript
import { TransactionInstruction, PublicKey, AccountMeta } from "@solana/web3.js" // eslint-disable-line @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 * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars
import { PROGRAM_ID } from "../programId"
export interface RepayAndWithdrawAndRedeemV2Args {
repayAmount: BN
withdrawCollateralAmount: BN
}
export interface RepayAndWithdrawAndRedeemV2Accounts {
repayAndWithdrawAccounts: {
repayAccounts: {
owner: PublicKey
obligation: PublicKey
lendingMarket: PublicKey
repayReserve: PublicKey
reserveLiquidityMint: PublicKey
reserveDestinationLiquidity: PublicKey
userSourceLiquidity: PublicKey
tokenProgram: PublicKey
instructionSysvarAccount: PublicKey
}
withdrawAccounts: {
owner: PublicKey
obligation: PublicKey
lendingMarket: PublicKey
lendingMarketAuthority: PublicKey
withdrawReserve: PublicKey
reserveLiquidityMint: PublicKey
reserveSourceCollateral: PublicKey
reserveCollateralMint: PublicKey
reserveLiquiditySupply: PublicKey
userDestinationLiquidity: PublicKey
placeholderUserDestinationCollateral: PublicKey
collateralTokenProgram: PublicKey
liquidityTokenProgram: PublicKey
instructionSysvarAccount: PublicKey
}
}
collateralFarmsAccounts: {
obligationFarmUserState: PublicKey
reserveFarmState: PublicKey
}
debtFarmsAccounts: {
obligationFarmUserState: PublicKey
reserveFarmState: PublicKey
}
farmsProgram: PublicKey
}
export const layout = borsh.struct([
borsh.u64("repayAmount"),
borsh.u64("withdrawCollateralAmount"),
])
export function repayAndWithdrawAndRedeemV2(
args: RepayAndWithdrawAndRedeemV2Args,
accounts: RepayAndWithdrawAndRedeemV2Accounts,
programId: PublicKey = PROGRAM_ID
) {
const keys: Array<AccountMeta> = [
{
pubkey: accounts.repayAndWithdrawAccounts.repayAccounts.owner,
isSigner: true,
isWritable: false,
},
{
pubkey: accounts.repayAndWithdrawAccounts.repayAccounts.obligation,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.repayAndWithdrawAccounts.repayAccounts.lendingMarket,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.repayAndWithdrawAccounts.repayAccounts.repayReserve,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.repayAccounts.reserveLiquidityMint,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.repayAccounts
.reserveDestinationLiquidity,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.repayAccounts.userSourceLiquidity,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.repayAndWithdrawAccounts.repayAccounts.tokenProgram,
isSigner: false,
isWritable: false,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.repayAccounts
.instructionSysvarAccount,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.repayAndWithdrawAccounts.withdrawAccounts.owner,
isSigner: true,
isWritable: false,
},
{
pubkey: accounts.repayAndWithdrawAccounts.withdrawAccounts.obligation,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.repayAndWithdrawAccounts.withdrawAccounts.lendingMarket,
isSigner: false,
isWritable: false,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.lendingMarketAuthority,
isSigner: false,
isWritable: false,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts.withdrawReserve,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts.reserveLiquidityMint,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.reserveSourceCollateral,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.reserveCollateralMint,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.reserveLiquiditySupply,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.userDestinationLiquidity,
isSigner: false,
isWritable: true,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.placeholderUserDestinationCollateral,
isSigner: false,
isWritable: false,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.collateralTokenProgram,
isSigner: false,
isWritable: false,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.liquidityTokenProgram,
isSigner: false,
isWritable: false,
},
{
pubkey:
accounts.repayAndWithdrawAccounts.withdrawAccounts
.instructionSysvarAccount,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.collateralFarmsAccounts.obligationFarmUserState,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.collateralFarmsAccounts.reserveFarmState,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.debtFarmsAccounts.obligationFarmUserState,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.debtFarmsAccounts.reserveFarmState,
isSigner: false,
isWritable: true,
},
{ pubkey: accounts.farmsProgram, isSigner: false, isWritable: false },
]
const identifier = Buffer.from([111, 173, 148, 121, 105, 221, 159, 99])
const buffer = Buffer.alloc(1000)
const len = layout.encode(
{
repayAmount: args.repayAmount,
withdrawCollateralAmount: args.withdrawCollateralAmount,
},
buffer
)
const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
const ix = new TransactionInstruction({ keys, programId, data })
return ix
}