@kamino-finance/kliquidity-sdk
Version:
Typescript SDK for interacting with the Kamino Liquidity (kliquidity) protocol
65 lines (60 loc) • 1.95 kB
text/typescript
/* eslint-disable @typescript-eslint/no-unused-vars */
import {
Address,
isSome,
IAccountMeta,
IAccountSignerMeta,
IInstruction,
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 interface InitializeFeeTierArgs {
tickSpacing: number
defaultFeeRate: number
}
export interface InitializeFeeTierAccounts {
config: Address
feeTier: Address
funder: TransactionSigner
feeAuthority: TransactionSigner
systemProgram: Address
}
export const layout = borsh.struct([
borsh.u16("tickSpacing"),
borsh.u16("defaultFeeRate"),
])
export function initializeFeeTier(
args: InitializeFeeTierArgs,
accounts: InitializeFeeTierAccounts,
programAddress: Address = PROGRAM_ID
) {
const keys: Array<IAccountMeta | IAccountSignerMeta> = [
{ address: accounts.config, role: 0 },
{ address: accounts.feeTier, role: 1 },
{ address: accounts.funder.address, role: 3, signer: accounts.funder },
{
address: accounts.feeAuthority.address,
role: 2,
signer: accounts.feeAuthority,
},
{ address: accounts.systemProgram, role: 0 },
]
const identifier = Buffer.from([183, 74, 156, 160, 112, 2, 42, 30])
const buffer = Buffer.alloc(1000)
const len = layout.encode(
{
tickSpacing: args.tickSpacing,
defaultFeeRate: args.defaultFeeRate,
},
buffer
)
const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
const ix: IInstruction = { accounts: keys, programAddress, data }
return ix
}