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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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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 }