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ts: verified build utility (coral-xyz#1371)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| import BN from "bn.js"; | ||
| import fetch from "cross-fetch"; | ||
| import * as borsh from "@project-serum/borsh"; | ||
| import { Connection, PublicKey } from "@solana/web3.js"; | ||
|
|
||
| /** | ||
| * Returns a verified build from the anchor registry. null if no such | ||
| * verified build exists, e.g., if the program has been upgraded since the | ||
| * last verified build. | ||
| */ | ||
| export async function verifiedBuild( | ||
| connection: Connection, | ||
| programId: PublicKey, | ||
| limit: number = 5 | ||
| ): Promise<Build | null> { | ||
| const url = `https://anchor.projectserum.com/api/v0/program/${programId.toString()}/latest?limit=${limit}`; | ||
| const [programData, latestBuildsResp] = await Promise.all([ | ||
| fetchData(connection, programId), | ||
| fetch(url), | ||
| ]); | ||
|
|
||
| // Filter out all non successful builds. | ||
| const latestBuilds = (await latestBuildsResp.json()).filter( | ||
| (b: Build) => !b.aborted && b.state === "Built" && b.verified === "Verified" | ||
| ); | ||
| if (latestBuilds.length === 0) { | ||
| return null; | ||
| } | ||
|
|
||
| // Get the latest build. | ||
| const build = latestBuilds[0]; | ||
|
|
||
| // Has the program been upgraded since the last build? | ||
| if (programData.slot.toNumber() !== build.verified_slot) { | ||
| return null; | ||
| } | ||
|
|
||
| // Success. | ||
| return build; | ||
| } | ||
|
|
||
| /** | ||
| * Returns the program data account for this program, containing the | ||
| * metadata for this program, e.g., the upgrade authority. | ||
| */ | ||
| export async function fetchData( | ||
| connection: Connection, | ||
| programId: PublicKey | ||
| ): Promise<ProgramData> { | ||
| const accountInfo = await connection.getAccountInfo(programId); | ||
| if (accountInfo === null) { | ||
| throw new Error("program account not found"); | ||
| } | ||
| const { program } = decodeUpgradeableLoaderState(accountInfo.data); | ||
| const programdataAccountInfo = await connection.getAccountInfo( | ||
| program.programdataAddress | ||
| ); | ||
| if (programdataAccountInfo === null) { | ||
| throw new Error("program data account not found"); | ||
| } | ||
| const { programData } = decodeUpgradeableLoaderState( | ||
| programdataAccountInfo.data | ||
| ); | ||
| return programData; | ||
| } | ||
|
|
||
| const UPGRADEABLE_LOADER_STATE_LAYOUT = borsh.rustEnum( | ||
| [ | ||
| borsh.struct([], "uninitialized"), | ||
| borsh.struct( | ||
| [borsh.option(borsh.publicKey(), "authorityAddress")], | ||
| "buffer" | ||
| ), | ||
| borsh.struct([borsh.publicKey("programdataAddress")], "program"), | ||
| borsh.struct( | ||
| [ | ||
| borsh.u64("slot"), | ||
| borsh.option(borsh.publicKey(), "upgradeAuthorityAddress"), | ||
| ], | ||
| "programData" | ||
| ), | ||
| ], | ||
| undefined, | ||
| borsh.u32() | ||
| ); | ||
|
|
||
| export function decodeUpgradeableLoaderState(data: Buffer): any { | ||
| return UPGRADEABLE_LOADER_STATE_LAYOUT.decode(data); | ||
| } | ||
|
|
||
| export type ProgramData = { | ||
| slot: BN; | ||
| upgradeAuthorityAddress: PublicKey | null; | ||
| }; | ||
|
|
||
| export type Build = { | ||
| aborted: boolean; | ||
| address: string; | ||
| created_at: string; | ||
| updated_at: string; | ||
| descriptor: string[]; | ||
| docker: string; | ||
| id: number; | ||
| name: string; | ||
| sha256: string; | ||
| upgrade_authority: string; | ||
| verified: string; | ||
| verified_slot: number; | ||
| state: string; | ||
| }; |
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