@kamino-finance/klend-sdk
Version:
Typescript SDK for interacting with the Kamino Lending (klend) protocol
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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 BorrowObligationLiquidityV2Args {
liquidityAmount: BN
}
export interface BorrowObligationLiquidityV2Accounts {
borrowAccounts: {
owner: PublicKey
obligation: PublicKey
lendingMarket: PublicKey
lendingMarketAuthority: PublicKey
borrowReserve: PublicKey
borrowReserveLiquidityMint: PublicKey
reserveSourceLiquidity: PublicKey
borrowReserveLiquidityFeeReceiver: PublicKey
userDestinationLiquidity: PublicKey
referrerTokenState: PublicKey
tokenProgram: PublicKey
instructionSysvarAccount: PublicKey
}
farmsAccounts: {
obligationFarmUserState: PublicKey
reserveFarmState: PublicKey
}
farmsProgram: PublicKey
}
export const layout = borsh.struct([borsh.u64("liquidityAmount")])
export function borrowObligationLiquidityV2(
args: BorrowObligationLiquidityV2Args,
accounts: BorrowObligationLiquidityV2Accounts,
programId: PublicKey = PROGRAM_ID
) {
const keys: Array<AccountMeta> = [
{
pubkey: accounts.borrowAccounts.owner,
isSigner: true,
isWritable: false,
},
{
pubkey: accounts.borrowAccounts.obligation,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.borrowAccounts.lendingMarket,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.borrowAccounts.lendingMarketAuthority,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.borrowAccounts.borrowReserve,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.borrowAccounts.borrowReserveLiquidityMint,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.borrowAccounts.reserveSourceLiquidity,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.borrowAccounts.borrowReserveLiquidityFeeReceiver,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.borrowAccounts.userDestinationLiquidity,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.borrowAccounts.referrerTokenState,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.borrowAccounts.tokenProgram,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.borrowAccounts.instructionSysvarAccount,
isSigner: false,
isWritable: false,
},
{
pubkey: accounts.farmsAccounts.obligationFarmUserState,
isSigner: false,
isWritable: true,
},
{
pubkey: accounts.farmsAccounts.reserveFarmState,
isSigner: false,
isWritable: true,
},
{ pubkey: accounts.farmsProgram, isSigner: false, isWritable: false },
]
const identifier = Buffer.from([161, 128, 143, 245, 171, 199, 194, 6])
const buffer = Buffer.alloc(1000)
const len = layout.encode(
{
liquidityAmount: args.liquidityAmount,
},
buffer
)
const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
const ix = new TransactionInstruction({ keys, programId, data })
return ix
}