69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
from __future__ import annotations
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import typing
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from solana.publickey import PublicKey
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from solana.transaction import TransactionInstruction, AccountMeta
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import borsh_construct as borsh
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from .. import types
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from ..program_id import PROGRAM_ID
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class VrfRequestRandomnessArgs(typing.TypedDict):
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params: types.vrf_request_randomness_params.VrfRequestRandomnessParams
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layout = borsh.CStruct(
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"params" / types.vrf_request_randomness_params.VrfRequestRandomnessParams.layout
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)
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class VrfRequestRandomnessAccounts(typing.TypedDict):
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authority: PublicKey
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vrf: PublicKey
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oracle_queue: PublicKey
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queue_authority: PublicKey
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data_buffer: PublicKey
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permission: PublicKey
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escrow: PublicKey
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payer_wallet: PublicKey
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payer_authority: PublicKey
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recent_blockhashes: PublicKey
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program_state: PublicKey
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token_program: PublicKey
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def vrf_request_randomness(
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args: VrfRequestRandomnessArgs, accounts: VrfRequestRandomnessAccounts
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) -> TransactionInstruction:
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keys: list[AccountMeta] = [
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AccountMeta(pubkey=accounts["authority"], is_signer=True, is_writable=False),
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AccountMeta(pubkey=accounts["vrf"], is_signer=False, is_writable=True),
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AccountMeta(pubkey=accounts["oracle_queue"], is_signer=False, is_writable=True),
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AccountMeta(
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pubkey=accounts["queue_authority"], is_signer=False, is_writable=False
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),
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AccountMeta(pubkey=accounts["data_buffer"], is_signer=False, is_writable=False),
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AccountMeta(pubkey=accounts["permission"], is_signer=False, is_writable=True),
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AccountMeta(pubkey=accounts["escrow"], is_signer=False, is_writable=True),
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AccountMeta(pubkey=accounts["payer_wallet"], is_signer=False, is_writable=True),
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AccountMeta(
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pubkey=accounts["payer_authority"], is_signer=True, is_writable=False
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),
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AccountMeta(
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pubkey=accounts["recent_blockhashes"], is_signer=False, is_writable=False
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),
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AccountMeta(
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pubkey=accounts["program_state"], is_signer=False, is_writable=False
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),
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AccountMeta(
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pubkey=accounts["token_program"], is_signer=False, is_writable=False
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),
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]
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identifier = b"\xe6y\x0e\xa4\x1c\xdeuv"
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encoded_args = layout.build(
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{
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"params": args["params"].to_encodable(),
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}
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)
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data = identifier + encoded_args
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return TransactionInstruction(keys, PROGRAM_ID, data)
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