@kamino-finance/klend-sdk
Version:
Typescript SDK for interacting with the Kamino Lending (klend) protocol
85 lines (79 loc) • 3.14 kB
text/typescript
/* 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([129, 199, 4, 2, 222, 39, 26, 46])
export interface DepositReserveLiquidityAndObligationCollateralArgs {
liquidityAmount: BN
}
export interface DepositReserveLiquidityAndObligationCollateralAccounts {
owner: TransactionSigner
obligation: Address
lendingMarket: Address
lendingMarketAuthority: Address
reserve: Address
reserveLiquidityMint: Address
reserveLiquiditySupply: Address
reserveCollateralMint: Address
reserveDestinationDepositCollateral: Address
userSourceLiquidity: Address
placeholderUserDestinationCollateral: Option<Address>
collateralTokenProgram: Address
liquidityTokenProgram: Address
instructionSysvarAccount: Address
}
export const layout =
borsh.struct<DepositReserveLiquidityAndObligationCollateralArgs>([
borsh.u64("liquidityAmount"),
])
export function depositReserveLiquidityAndObligationCollateral(
args: DepositReserveLiquidityAndObligationCollateralArgs,
accounts: DepositReserveLiquidityAndObligationCollateralAccounts,
remainingAccounts: Array<AccountMeta | AccountSignerMeta> = [],
programAddress: Address = PROGRAM_ID
) {
const keys: Array<AccountMeta | AccountSignerMeta> = [
{ address: accounts.owner.address, role: 3, signer: accounts.owner },
{ address: accounts.obligation, role: 1 },
{ address: accounts.lendingMarket, role: 0 },
{ address: accounts.lendingMarketAuthority, role: 0 },
{ address: accounts.reserve, role: 1 },
{ address: accounts.reserveLiquidityMint, role: 0 },
{ address: accounts.reserveLiquiditySupply, role: 1 },
{ address: accounts.reserveCollateralMint, role: 1 },
{ address: accounts.reserveDestinationDepositCollateral, role: 1 },
{ address: accounts.userSourceLiquidity, role: 1 },
isSome(accounts.placeholderUserDestinationCollateral)
? {
address: accounts.placeholderUserDestinationCollateral.value,
role: 0,
}
: { address: programAddress, role: 0 },
{ address: accounts.collateralTokenProgram, role: 0 },
{ address: accounts.liquidityTokenProgram, 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
}