@kamino-finance/kliquidity-sdk
Version:
Typescript SDK for interacting with the Kamino Liquidity (kliquidity) protocol
241 lines (223 loc) • 8.22 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 PositionFields {
/** The LB pair of this position */
lbPair: Address
/** Owner of the position. Client rely on this to to fetch their positions. */
owner: Address
/** Liquidity shares of this position in bins (lower_bin_id <-> upper_bin_id). This is the same as LP concept. */
liquidityShares: Array<BN>
/** Farming reward information */
rewardInfos: Array<types.UserRewardInfoFields>
/** Swap fee to claim information */
feeInfos: Array<types.FeeInfoFields>
/** Lower bin ID */
lowerBinId: number
/** Upper bin ID */
upperBinId: number
/** Last updated timestamp */
lastUpdatedAt: BN
/** Total claimed token fee X */
totalClaimedFeeXAmount: BN
/** Total claimed token fee Y */
totalClaimedFeeYAmount: BN
/** Total claimed rewards */
totalClaimedRewards: Array<BN>
/** Reserved space for future use */
reserved: Array<number>
}
export interface PositionJSON {
/** The LB pair of this position */
lbPair: string
/** Owner of the position. Client rely on this to to fetch their positions. */
owner: string
/** Liquidity shares of this position in bins (lower_bin_id <-> upper_bin_id). This is the same as LP concept. */
liquidityShares: Array<string>
/** Farming reward information */
rewardInfos: Array<types.UserRewardInfoJSON>
/** Swap fee to claim information */
feeInfos: Array<types.FeeInfoJSON>
/** Lower bin ID */
lowerBinId: number
/** Upper bin ID */
upperBinId: number
/** Last updated timestamp */
lastUpdatedAt: string
/** Total claimed token fee X */
totalClaimedFeeXAmount: string
/** Total claimed token fee Y */
totalClaimedFeeYAmount: string
/** Total claimed rewards */
totalClaimedRewards: Array<string>
/** Reserved space for future use */
reserved: Array<number>
}
export class Position {
/** The LB pair of this position */
readonly lbPair: Address
/** Owner of the position. Client rely on this to to fetch their positions. */
readonly owner: Address
/** Liquidity shares of this position in bins (lower_bin_id <-> upper_bin_id). This is the same as LP concept. */
readonly liquidityShares: Array<BN>
/** Farming reward information */
readonly rewardInfos: Array<types.UserRewardInfo>
/** Swap fee to claim information */
readonly feeInfos: Array<types.FeeInfo>
/** Lower bin ID */
readonly lowerBinId: number
/** Upper bin ID */
readonly upperBinId: number
/** Last updated timestamp */
readonly lastUpdatedAt: BN
/** Total claimed token fee X */
readonly totalClaimedFeeXAmount: BN
/** Total claimed token fee Y */
readonly totalClaimedFeeYAmount: BN
/** Total claimed rewards */
readonly totalClaimedRewards: Array<BN>
/** Reserved space for future use */
readonly reserved: Array<number>
static readonly discriminator = Buffer.from([
170, 188, 143, 228, 122, 64, 247, 208,
])
static readonly layout = borsh.struct<Position>([
borshAddress("lbPair"),
borshAddress("owner"),
borsh.array(borsh.u64(), 70, "liquidityShares"),
borsh.array(types.UserRewardInfo.layout(), 70, "rewardInfos"),
borsh.array(types.FeeInfo.layout(), 70, "feeInfos"),
borsh.i32("lowerBinId"),
borsh.i32("upperBinId"),
borsh.i64("lastUpdatedAt"),
borsh.u64("totalClaimedFeeXAmount"),
borsh.u64("totalClaimedFeeYAmount"),
borsh.array(borsh.u64(), 2, "totalClaimedRewards"),
borsh.array(borsh.u8(), 160, "reserved"),
])
constructor(fields: PositionFields) {
this.lbPair = fields.lbPair
this.owner = fields.owner
this.liquidityShares = fields.liquidityShares
this.rewardInfos = fields.rewardInfos.map(
(item) => new types.UserRewardInfo({ ...item })
)
this.feeInfos = fields.feeInfos.map(
(item) => new types.FeeInfo({ ...item })
)
this.lowerBinId = fields.lowerBinId
this.upperBinId = fields.upperBinId
this.lastUpdatedAt = fields.lastUpdatedAt
this.totalClaimedFeeXAmount = fields.totalClaimedFeeXAmount
this.totalClaimedFeeYAmount = fields.totalClaimedFeeYAmount
this.totalClaimedRewards = fields.totalClaimedRewards
this.reserved = fields.reserved
}
static async fetch(
rpc: Rpc<GetAccountInfoApi>,
address: Address,
programId: Address = PROGRAM_ID
): Promise<Position | 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<Position | 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): Position {
if (!data.slice(0, 8).equals(Position.discriminator)) {
throw new Error("invalid account discriminator")
}
const dec = Position.layout.decode(data.slice(8))
return new Position({
lbPair: dec.lbPair,
owner: dec.owner,
liquidityShares: dec.liquidityShares,
rewardInfos: dec.rewardInfos.map(
(
item: any /* eslint-disable-line @typescript-eslint/no-explicit-any */
) => types.UserRewardInfo.fromDecoded(item)
),
feeInfos: dec.feeInfos.map(
(
item: any /* eslint-disable-line @typescript-eslint/no-explicit-any */
) => types.FeeInfo.fromDecoded(item)
),
lowerBinId: dec.lowerBinId,
upperBinId: dec.upperBinId,
lastUpdatedAt: dec.lastUpdatedAt,
totalClaimedFeeXAmount: dec.totalClaimedFeeXAmount,
totalClaimedFeeYAmount: dec.totalClaimedFeeYAmount,
totalClaimedRewards: dec.totalClaimedRewards,
reserved: dec.reserved,
})
}
toJSON(): PositionJSON {
return {
lbPair: this.lbPair,
owner: this.owner,
liquidityShares: this.liquidityShares.map((item) => item.toString()),
rewardInfos: this.rewardInfos.map((item) => item.toJSON()),
feeInfos: this.feeInfos.map((item) => item.toJSON()),
lowerBinId: this.lowerBinId,
upperBinId: this.upperBinId,
lastUpdatedAt: this.lastUpdatedAt.toString(),
totalClaimedFeeXAmount: this.totalClaimedFeeXAmount.toString(),
totalClaimedFeeYAmount: this.totalClaimedFeeYAmount.toString(),
totalClaimedRewards: this.totalClaimedRewards.map((item) =>
item.toString()
),
reserved: this.reserved,
}
}
static fromJSON(obj: PositionJSON): Position {
return new Position({
lbPair: address(obj.lbPair),
owner: address(obj.owner),
liquidityShares: obj.liquidityShares.map((item) => new BN(item)),
rewardInfos: obj.rewardInfos.map((item) =>
types.UserRewardInfo.fromJSON(item)
),
feeInfos: obj.feeInfos.map((item) => types.FeeInfo.fromJSON(item)),
lowerBinId: obj.lowerBinId,
upperBinId: obj.upperBinId,
lastUpdatedAt: new BN(obj.lastUpdatedAt),
totalClaimedFeeXAmount: new BN(obj.totalClaimedFeeXAmount),
totalClaimedFeeYAmount: new BN(obj.totalClaimedFeeYAmount),
totalClaimedRewards: obj.totalClaimedRewards.map((item) => new BN(item)),
reserved: obj.reserved,
})
}
}