@kamino-finance/scope-sdk
Version:
Scope Oracle SDK
149 lines (131 loc) • 4.29 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 ConfigurationFields {
admin: Address
oracleMappings: Address
oraclePrices: Address
tokensMetadata: Address
oracleTwaps: Address
adminCached: Address
padding: Array<BN>
}
export interface ConfigurationJSON {
admin: string
oracleMappings: string
oraclePrices: string
tokensMetadata: string
oracleTwaps: string
adminCached: string
padding: Array<string>
}
export class Configuration {
readonly admin: Address
readonly oracleMappings: Address
readonly oraclePrices: Address
readonly tokensMetadata: Address
readonly oracleTwaps: Address
readonly adminCached: Address
readonly padding: Array<BN>
static readonly discriminator = Buffer.from([
192, 79, 172, 30, 21, 173, 25, 43,
])
static readonly layout = borsh.struct<Configuration>([
borshAddress("admin"),
borshAddress("oracleMappings"),
borshAddress("oraclePrices"),
borshAddress("tokensMetadata"),
borshAddress("oracleTwaps"),
borshAddress("adminCached"),
borsh.array(borsh.u64(), 1255, "padding"),
])
constructor(fields: ConfigurationFields) {
this.admin = fields.admin
this.oracleMappings = fields.oracleMappings
this.oraclePrices = fields.oraclePrices
this.tokensMetadata = fields.tokensMetadata
this.oracleTwaps = fields.oracleTwaps
this.adminCached = fields.adminCached
this.padding = fields.padding
}
static async fetch(
rpc: Rpc<GetAccountInfoApi>,
address: Address,
programId: Address = PROGRAM_ID
): Promise<Configuration | 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<Configuration | 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): Configuration {
if (!data.slice(0, 8).equals(Configuration.discriminator)) {
throw new Error("invalid account discriminator")
}
const dec = Configuration.layout.decode(data.slice(8))
return new Configuration({
admin: dec.admin,
oracleMappings: dec.oracleMappings,
oraclePrices: dec.oraclePrices,
tokensMetadata: dec.tokensMetadata,
oracleTwaps: dec.oracleTwaps,
adminCached: dec.adminCached,
padding: dec.padding,
})
}
toJSON(): ConfigurationJSON {
return {
admin: this.admin,
oracleMappings: this.oracleMappings,
oraclePrices: this.oraclePrices,
tokensMetadata: this.tokensMetadata,
oracleTwaps: this.oracleTwaps,
adminCached: this.adminCached,
padding: this.padding.map((item) => item.toString()),
}
}
static fromJSON(obj: ConfigurationJSON): Configuration {
return new Configuration({
admin: address(obj.admin),
oracleMappings: address(obj.oracleMappings),
oraclePrices: address(obj.oraclePrices),
tokensMetadata: address(obj.tokensMetadata),
oracleTwaps: address(obj.oracleTwaps),
adminCached: address(obj.adminCached),
padding: obj.padding.map((item) => new BN(item)),
})
}
}