@kamino-finance/kliquidity-sdk
Version:
Typescript SDK for interacting with the Kamino Liquidity (kliquidity) protocol
183 lines (165 loc) • 5.86 kB
text/typescript
/* eslint-disable @typescript-eslint/no-unused-vars */
import {
address,
Address,
fetchEncodedAccount,
fetchEncodedAccounts,
GetAccountInfoApi,
GetMultipleAccountsApi,
Rpc,
} 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 ProtocolPositionStateFields {
bump: number
poolId: Address
tickLowerIndex: number
tickUpperIndex: number
liquidity: BN
feeGrowthInside0LastX64: BN
feeGrowthInside1LastX64: BN
tokenFeesOwed0: BN
tokenFeesOwed1: BN
rewardGrowthInside: Array<BN>
padding: Array<BN>
}
export interface ProtocolPositionStateJSON {
bump: number
poolId: string
tickLowerIndex: number
tickUpperIndex: number
liquidity: string
feeGrowthInside0LastX64: string
feeGrowthInside1LastX64: string
tokenFeesOwed0: string
tokenFeesOwed1: string
rewardGrowthInside: Array<string>
padding: Array<string>
}
export class ProtocolPositionState {
readonly bump: number
readonly poolId: Address
readonly tickLowerIndex: number
readonly tickUpperIndex: number
readonly liquidity: BN
readonly feeGrowthInside0LastX64: BN
readonly feeGrowthInside1LastX64: BN
readonly tokenFeesOwed0: BN
readonly tokenFeesOwed1: BN
readonly rewardGrowthInside: Array<BN>
readonly padding: Array<BN>
static readonly discriminator = Buffer.from([
100, 226, 145, 99, 146, 218, 160, 106,
])
static readonly layout = borsh.struct<ProtocolPositionState>([
borsh.u8("bump"),
borshAddress("poolId"),
borsh.i32("tickLowerIndex"),
borsh.i32("tickUpperIndex"),
borsh.u128("liquidity"),
borsh.u128("feeGrowthInside0LastX64"),
borsh.u128("feeGrowthInside1LastX64"),
borsh.u64("tokenFeesOwed0"),
borsh.u64("tokenFeesOwed1"),
borsh.array(borsh.u128(), 3, "rewardGrowthInside"),
borsh.array(borsh.u64(), 8, "padding"),
])
constructor(fields: ProtocolPositionStateFields) {
this.bump = fields.bump
this.poolId = fields.poolId
this.tickLowerIndex = fields.tickLowerIndex
this.tickUpperIndex = fields.tickUpperIndex
this.liquidity = fields.liquidity
this.feeGrowthInside0LastX64 = fields.feeGrowthInside0LastX64
this.feeGrowthInside1LastX64 = fields.feeGrowthInside1LastX64
this.tokenFeesOwed0 = fields.tokenFeesOwed0
this.tokenFeesOwed1 = fields.tokenFeesOwed1
this.rewardGrowthInside = fields.rewardGrowthInside
this.padding = fields.padding
}
static async fetch(
rpc: Rpc<GetAccountInfoApi>,
address: Address,
programId: Address = PROGRAM_ID
): Promise<ProtocolPositionState | null> {
const info = await fetchEncodedAccount(rpc, address)
if (!info.exists) {
return null
}
if (info.programAddress !== programId) {
throw new Error("account doesn't belong to this program")
}
return this.decode(Buffer.from(info.data))
}
static async fetchMultiple(
rpc: Rpc<GetMultipleAccountsApi>,
addresses: Address[],
programId: Address = PROGRAM_ID
): Promise<Array<ProtocolPositionState | null>> {
const infos = await fetchEncodedAccounts(rpc, addresses)
return infos.map((info) => {
if (!info.exists) {
return null
}
if (info.programAddress !== programId) {
throw new Error("account doesn't belong to this program")
}
return this.decode(Buffer.from(info.data))
})
}
static decode(data: Buffer): ProtocolPositionState {
if (!data.slice(0, 8).equals(ProtocolPositionState.discriminator)) {
throw new Error("invalid account discriminator")
}
const dec = ProtocolPositionState.layout.decode(data.slice(8))
return new ProtocolPositionState({
bump: dec.bump,
poolId: dec.poolId,
tickLowerIndex: dec.tickLowerIndex,
tickUpperIndex: dec.tickUpperIndex,
liquidity: dec.liquidity,
feeGrowthInside0LastX64: dec.feeGrowthInside0LastX64,
feeGrowthInside1LastX64: dec.feeGrowthInside1LastX64,
tokenFeesOwed0: dec.tokenFeesOwed0,
tokenFeesOwed1: dec.tokenFeesOwed1,
rewardGrowthInside: dec.rewardGrowthInside,
padding: dec.padding,
})
}
toJSON(): ProtocolPositionStateJSON {
return {
bump: this.bump,
poolId: this.poolId,
tickLowerIndex: this.tickLowerIndex,
tickUpperIndex: this.tickUpperIndex,
liquidity: this.liquidity.toString(),
feeGrowthInside0LastX64: this.feeGrowthInside0LastX64.toString(),
feeGrowthInside1LastX64: this.feeGrowthInside1LastX64.toString(),
tokenFeesOwed0: this.tokenFeesOwed0.toString(),
tokenFeesOwed1: this.tokenFeesOwed1.toString(),
rewardGrowthInside: this.rewardGrowthInside.map((item) =>
item.toString()
),
padding: this.padding.map((item) => item.toString()),
}
}
static fromJSON(obj: ProtocolPositionStateJSON): ProtocolPositionState {
return new ProtocolPositionState({
bump: obj.bump,
poolId: address(obj.poolId),
tickLowerIndex: obj.tickLowerIndex,
tickUpperIndex: obj.tickUpperIndex,
liquidity: new BN(obj.liquidity),
feeGrowthInside0LastX64: new BN(obj.feeGrowthInside0LastX64),
feeGrowthInside1LastX64: new BN(obj.feeGrowthInside1LastX64),
tokenFeesOwed0: new BN(obj.tokenFeesOwed0),
tokenFeesOwed1: new BN(obj.tokenFeesOwed1),
rewardGrowthInside: obj.rewardGrowthInside.map((item) => new BN(item)),
padding: obj.padding.map((item) => new BN(item)),
})
}
}