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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 DepositReserveLiquidityAndObligationCollateralArgs { liquidityAmount: BN } export interface DepositReserveLiquidityAndObligationCollateralAccounts { owner: PublicKey obligation: PublicKey lendingMarket: PublicKey lendingMarketAuthority: PublicKey reserve: PublicKey reserveLiquidityMint: PublicKey reserveLiquiditySupply: PublicKey reserveCollateralMint: PublicKey reserveDestinationDepositCollateral: PublicKey userSourceLiquidity: PublicKey placeholderUserDestinationCollateral: PublicKey collateralTokenProgram: PublicKey liquidityTokenProgram: PublicKey instructionSysvarAccount: PublicKey } export const layout = borsh.struct([borsh.u64("liquidityAmount")]) export function depositReserveLiquidityAndObligationCollateral( args: DepositReserveLiquidityAndObligationCollateralArgs, accounts: DepositReserveLiquidityAndObligationCollateralAccounts, programId: PublicKey = PROGRAM_ID ) { const keys: Array<AccountMeta> = [ { pubkey: accounts.owner, isSigner: true, isWritable: true }, { pubkey: accounts.obligation, isSigner: false, isWritable: true }, { pubkey: accounts.lendingMarket, isSigner: false, isWritable: false }, { pubkey: accounts.lendingMarketAuthority, isSigner: false, isWritable: false, }, { pubkey: accounts.reserve, isSigner: false, isWritable: true }, { pubkey: accounts.reserveLiquidityMint, isSigner: false, isWritable: true, }, { pubkey: accounts.reserveLiquiditySupply, isSigner: false, isWritable: true, }, { pubkey: accounts.reserveCollateralMint, isSigner: false, isWritable: true, }, { pubkey: accounts.reserveDestinationDepositCollateral, isSigner: false, isWritable: true, }, { pubkey: accounts.userSourceLiquidity, isSigner: false, isWritable: true }, { pubkey: accounts.placeholderUserDestinationCollateral, isSigner: false, isWritable: false, }, { pubkey: accounts.collateralTokenProgram, isSigner: false, isWritable: false, }, { pubkey: accounts.liquidityTokenProgram, isSigner: false, isWritable: false, }, { pubkey: accounts.instructionSysvarAccount, isSigner: false, isWritable: false, }, ] const identifier = Buffer.from([129, 199, 4, 2, 222, 39, 26, 46]) 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 }