@kamino-finance/kliquidity-sdk
Version:
Typescript SDK for interacting with the Kamino Liquidity (kliquidity) protocol
101 lines (83 loc) • 2.74 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 ScopeChainAccountFields {
chainArray: Array<Array<number>>
}
export interface ScopeChainAccountJSON {
chainArray: Array<Array<number>>
}
export class ScopeChainAccount {
readonly chainArray: Array<Array<number>>
static readonly discriminator = Buffer.from([
180, 51, 138, 247, 240, 173, 119, 79,
])
static readonly layout = borsh.struct<ScopeChainAccount>([
borsh.array(borsh.array(borsh.u16(), 4), 512, "chainArray"),
])
constructor(fields: ScopeChainAccountFields) {
this.chainArray = fields.chainArray
}
static async fetch(
rpc: Rpc<GetAccountInfoApi>,
address: Address,
programId: Address = PROGRAM_ID
): Promise<ScopeChainAccount | 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<ScopeChainAccount | 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): ScopeChainAccount {
if (!data.slice(0, 8).equals(ScopeChainAccount.discriminator)) {
throw new Error("invalid account discriminator")
}
const dec = ScopeChainAccount.layout.decode(data.slice(8))
return new ScopeChainAccount({
chainArray: dec.chainArray,
})
}
toJSON(): ScopeChainAccountJSON {
return {
chainArray: this.chainArray,
}
}
static fromJSON(obj: ScopeChainAccountJSON): ScopeChainAccount {
return new ScopeChainAccount({
chainArray: obj.chainArray,
})
}
}