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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([161, 128, 143, 245, 171, 199, 194, 6]) export interface BorrowObligationLiquidityV2Args { liquidityAmount: BN } export interface BorrowObligationLiquidityV2Accounts { borrowAccounts: { 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 } farmsAccounts: { obligationFarmUserState: Option<Address> reserveFarmState: Option<Address> } farmsProgram: Address } export const layout = borsh.struct<BorrowObligationLiquidityV2Args>([ borsh.u64("liquidityAmount"), ]) export function borrowObligationLiquidityV2( args: BorrowObligationLiquidityV2Args, accounts: BorrowObligationLiquidityV2Accounts, remainingAccounts: Array<AccountMeta | AccountSignerMeta> = [], programAddress: Address = PROGRAM_ID ) { const keys: Array<AccountMeta | AccountSignerMeta> = [ { address: accounts.borrowAccounts.owner.address, role: 2, signer: accounts.borrowAccounts.owner, }, { address: accounts.borrowAccounts.obligation, role: 1 }, { address: accounts.borrowAccounts.lendingMarket, role: 0 }, { address: accounts.borrowAccounts.lendingMarketAuthority, role: 0 }, { address: accounts.borrowAccounts.borrowReserve, role: 1 }, { address: accounts.borrowAccounts.borrowReserveLiquidityMint, role: 0 }, { address: accounts.borrowAccounts.reserveSourceLiquidity, role: 1 }, { address: accounts.borrowAccounts.borrowReserveLiquidityFeeReceiver, role: 1, }, { address: accounts.borrowAccounts.userDestinationLiquidity, role: 1 }, isSome(accounts.borrowAccounts.referrerTokenState) ? { address: accounts.borrowAccounts.referrerTokenState.value, role: 1 } : { address: programAddress, role: 0 }, { address: accounts.borrowAccounts.tokenProgram, role: 0 }, { address: accounts.borrowAccounts.instructionSysvarAccount, role: 0 }, isSome(accounts.farmsAccounts.obligationFarmUserState) ? { address: accounts.farmsAccounts.obligationFarmUserState.value, role: 1, } : { address: programAddress, role: 0 }, isSome(accounts.farmsAccounts.reserveFarmState) ? { address: accounts.farmsAccounts.reserveFarmState.value, role: 1 } : { address: programAddress, role: 0 }, { address: accounts.farmsProgram, 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 }