BBAChain specific extension for beet, the borsh compatible de/serializer
npm install @bbachain/beet-bbachainBBAChain specific extension for beet, the borsh compatible de/serializer
Please find the API docs here.
bbachain-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
#### Simple struct with primitives
``ts
export type ResultsArgs = Pick
export class Results {
constructor(
readonly win: number,
readonly totalWin: number,
readonly losses: number
) {}
static readonly struct = new BeetStruct
[
['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_
`ts
export type TraderArgs = Pick
export class Trader {
constructor(
readonly name: string,
readonly results: Results,
readonly age: number
) {}
static readonly struct = new BeetStruct
[
['name', fixedSizeUtf8String(4)],
['results', Results.struct],
['age', u8],
],
(args) => new Trader(args.name!, args.results!, args.age!),
'Trader'
)
}
const gpaBuilder = GpaBuilder.fromStruct
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_
`ts
const gpaBuilder = GpaBuilder.fromStruct
PROGRAM_ID,
Trader.struct
)
const account = await gpaBuilder
.addInnerFilter('results.totalWin', 8)
.addInnerFilter('results.win', 2)
.run()
`
beet-bbachain provides a de/serializer for bbachain public keys.
They can either be used directly or as part of a struct.
#### Using PublicKey Directly
`ts
import { publicKey } from '@bbachain/beet-bbachain'
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
`ts
import * as beet from '@bbachain/beet'
import * as beetBBA from '@bbachain/beet-bbachain'
import * as web3 from '@bbachain/web3.js'
type InstructionArgs = {
authority: web3.PublicKey
}
const createStruct = new beet.BeetArgsStruct
[
['authority', beetBBA.publicKey]
],
'InstructionArgs'
)
``
Apache-2.0