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@kamino-finance/klend-sdk

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Typescript SDK for interacting with the Kamino Lending (klend) protocol

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/* eslint-disable @typescript-eslint/no-unused-vars */ import { Address, isSome, AccountMeta, AccountSignerMeta, Instruction, 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 const DISCRIMINATOR = Buffer.from([121, 127, 18, 204, 73, 245, 225, 65]) export interface BorrowObligationLiquidityArgs { liquidityAmount: BN } export interface BorrowObligationLiquidityAccounts { owner: TransactionSigner obligation: Address lendingMarket: Address lendingMarketAuthority: Address borrowReserve: Address borrowReserveLiquidityMint: Address reserveSourceLiquidity: Address borrowReserveLiquidityFeeReceiver: Address userDestinationLiquidity: Address referrerTokenState: Option<Address> tokenProgram: Address instructionSysvarAccount: Address } export const layout = borsh.struct<BorrowObligationLiquidityArgs>([ borsh.u64("liquidityAmount"), ]) export function borrowObligationLiquidity( args: BorrowObligationLiquidityArgs, accounts: BorrowObligationLiquidityAccounts, remainingAccounts: Array<AccountMeta | AccountSignerMeta> = [], programAddress: Address = PROGRAM_ID ) { const keys: Array<AccountMeta | AccountSignerMeta> = [ { address: accounts.owner.address, role: 2, signer: accounts.owner }, { address: accounts.obligation, role: 1 }, { address: accounts.lendingMarket, role: 0 }, { address: accounts.lendingMarketAuthority, role: 0 }, { address: accounts.borrowReserve, role: 1 }, { address: accounts.borrowReserveLiquidityMint, role: 0 }, { address: accounts.reserveSourceLiquidity, role: 1 }, { address: accounts.borrowReserveLiquidityFeeReceiver, role: 1 }, { address: accounts.userDestinationLiquidity, role: 1 }, isSome(accounts.referrerTokenState) ? { address: accounts.referrerTokenState.value, role: 1 } : { address: programAddress, role: 0 }, { address: accounts.tokenProgram, role: 0 }, { address: accounts.instructionSysvarAccount, role: 0 }, ...remainingAccounts, ] const buffer = Buffer.alloc(1000) const len = layout.encode( { liquidityAmount: args.liquidityAmount, }, buffer ) const data = Buffer.concat([DISCRIMINATOR, buffer]).slice(0, 8 + len) const ix: Instruction = { accounts: keys, programAddress, data } return ix }