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@convergence-rfq/beet-solana

v0.4.11

Published

Solana specific extension for beet, the borsh compatible de/serializer

Downloads

17

Readme

@convergence-rfq/beet-solana

Solana specific extension for beet, the borsh compatible de/serializer

API

Please find the API docs here.

GPA Builders

solana-beet uses beets knowledge about account layouts to provide GpaBuilders for them which allow to filter by account data size and content.

  1. Create a GPA Builder via const gpaBuilder = GpaBuilder.fromStruct(programId, accountStruct)
  2. add filters via gpaBuilder.dataSize, gpaBuilder.addFilter or gpaBuilder.addInnerFilter
  3. execute gpaBuilder.run(connection) which will return all accounts matching the specified filters

Examples

Simple struct with primitives

export type ResultsArgs = Pick<Results, 'win' | 'totalWin' | 'losses'>
export class Results {
  constructor(
    readonly win: number,
    readonly totalWin: number,
    readonly losses: number
  ) {}

  static readonly struct = new BeetStruct<Results, ResultsArgs>(
    [
      ['win', u8],
      ['totalWin', u16],
      ['losses', i32],
    ],
    (args: ResultsArgs) => new Results(args.win!, args.totalWin!, args.losses!),
    'Results'
  )
}

const gpaBuilder = GpaBuilder.fromStruct(PROGRAM_ID, Results.struct)
const accounts = await gpaBuilder
  .addFilter('totalWin', 8)
  .addFilter('losses', -7)
  .run()

Matching on Complete Nested Struct

Using Results struct from above

export type TraderArgs = Pick<Trader, 'name' | 'results' | 'age'>
export class Trader {
  constructor(
    readonly name: string,
    readonly results: Results,
    readonly age: number
  ) {}

  static readonly struct = new BeetStruct<Trader, TraderArgs>(
    [
      ['name', fixedSizeUtf8String(4)],
      ['results', Results.struct],
      ['age', u8],
    ],
    (args) => new Trader(args.name!, args.results!, args.age!),
    'Trader'
  )
}

const gpaBuilder = GpaBuilder.fromStruct<Trader>(PROGRAM_ID, Trader.struct)

const results = {
  win: 3,
  totalWin: 4,
  losses: -100,
}

const accounts = await gpaBuilder.addFilter('results', results).run()

Matching on Part of Nested Struct

Using Trader struct from above

const gpaBuilder = GpaBuilder.fromStruct<Trader>(PROGRAM_ID, Trader.struct)

const account = await gpaBuilder
  .addInnerFilter('results.totalWin', 8)
  .addInnerFilter('results.win', 2)
  .run()

PublicKey

solana-beet provides a de/serializer for solana public keys. They can either be used directly or as part of a struct.

Examples

Using PublicKey Directly

import { publicKey } from '@convergence-rfq/beet-solana'

const generatedKey = Keypair.generate().publicKey
const buf = Buffer.alloc(publicKey.byteSize)
beet.write(buf, 0, generatedKey)
beet.read(buf, 0) // same as generatedKey

PublicKey as part of a Struct Configuration

import * as web3 from '@solana/web3.js'
import * as beet from '@convergence-rfq/beet'
import * as beetSolana from '@convergence-rfq/beet-solana'

type InstructionArgs = {
  authority: web3.PublicKey
}

const createStruct = new beet.BeetArgsStruct<InstructionArgs>(
  [['authority', beetSolana.publicKey]],
  'InstructionArgs'
)

LICENSE

Apache-2.0