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✨ Implement Versioned Transactions (#44)
* ✨ Implement Versioned Transaction * 🔖 Bump version to 2.6.1.1
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134 changes: 134 additions & 0 deletions
134
src/Solana.Unity.Rpc/Builders/VersionedMessageBuilder.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| using Solana.Unity.Rpc.Models; | ||
| using Solana.Unity.Rpc.Utilities; | ||
| using Solana.Unity.Wallet; | ||
| using Solana.Unity.Wallet.Utilities; | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.IO; | ||
|
|
||
| namespace Solana.Unity.Rpc.Builders | ||
| { | ||
| /// <summary> | ||
| /// A compiled instruction within the message. | ||
| /// </summary> | ||
| public class VersionedMessageBuilder: MessageBuilder | ||
| { | ||
|
|
||
| /// <summary> | ||
| /// Address Table Lookups | ||
| /// </summary> | ||
| public List<MessageAddressTableLookup> AddressTableLookups { get; set; } | ||
|
|
||
| /// <summary> | ||
| /// Builds the message into the wire format. | ||
| /// </summary> | ||
| /// <returns>The encoded message.</returns> | ||
| internal override byte[] Build() | ||
| { | ||
| if (RecentBlockHash == null && NonceInformation == null) | ||
| throw new Exception("recent block hash or nonce information is required"); | ||
| if (Instructions == null) | ||
| throw new Exception("no instructions provided in the transaction"); | ||
|
|
||
| // In case the user specified nonce information, we'll use it. | ||
| if (NonceInformation != null) | ||
| { | ||
| RecentBlockHash = NonceInformation.Nonce; | ||
| _accountKeysList.Add(NonceInformation.Instruction.Keys); | ||
| _accountKeysList.Add(AccountMeta.ReadOnly(new PublicKey(NonceInformation.Instruction.ProgramId), | ||
| false)); | ||
| List<TransactionInstruction> newInstructions = new() { NonceInformation.Instruction }; | ||
| newInstructions.AddRange(Instructions); | ||
| Instructions = newInstructions; | ||
| } | ||
|
|
||
| _messageHeader = new MessageHeader(); | ||
|
|
||
| List<AccountMeta> keysList = GetAccountKeys(); | ||
| byte[] accountAddressesLength = ShortVectorEncoding.EncodeLength(keysList.Count); | ||
| int compiledInstructionsLength = 0; | ||
| List<CompiledInstruction> compiledInstructions = new(); | ||
|
|
||
| foreach (TransactionInstruction instruction in Instructions) | ||
| { | ||
| int keyCount = instruction.Keys.Count; | ||
| byte[] keyIndices = new byte[keyCount]; | ||
|
|
||
| if (instruction.GetType() == typeof(VersionedTransactionInstruction)) | ||
| { | ||
| keyIndices = ((VersionedTransactionInstruction)instruction).KeyIndices; | ||
| } | ||
| else | ||
| { | ||
| for (int i = 0; i < keyCount; i++) | ||
| { | ||
| keyIndices[i] = FindAccountIndex(keysList, instruction.Keys[i].PublicKey); | ||
| } | ||
| } | ||
|
|
||
| CompiledInstruction compiledInstruction = new() | ||
| { | ||
| ProgramIdIndex = FindAccountIndex(keysList, instruction.ProgramId), | ||
| KeyIndicesCount = ShortVectorEncoding.EncodeLength(keyIndices.Length), | ||
| KeyIndices = keyIndices, | ||
| DataLength = ShortVectorEncoding.EncodeLength(instruction.Data.Length), | ||
| Data = instruction.Data | ||
| }; | ||
| compiledInstructions.Add(compiledInstruction); | ||
| compiledInstructionsLength += compiledInstruction.Length(); | ||
| } | ||
|
|
||
| int accountKeysBufferSize = _accountKeysList.AccountList.Count * 32; | ||
| MemoryStream accountKeysBuffer = new MemoryStream(accountKeysBufferSize); | ||
| byte[] instructionsLength = ShortVectorEncoding.EncodeLength(compiledInstructions.Count); | ||
|
|
||
| foreach (AccountMeta accountMeta in keysList) | ||
| { | ||
| accountKeysBuffer.Write(accountMeta.PublicKeyBytes, 0, accountMeta.PublicKeyBytes.Length); | ||
| if (accountMeta.IsSigner) | ||
| { | ||
| _messageHeader.RequiredSignatures += 1; | ||
| if (!accountMeta.IsWritable) | ||
| _messageHeader.ReadOnlySignedAccounts += 1; | ||
| } | ||
| else | ||
| { | ||
| if (!accountMeta.IsWritable) | ||
| _messageHeader.ReadOnlyUnsignedAccounts += 1; | ||
| } | ||
| } | ||
|
|
||
| #region Build Message Body | ||
|
|
||
| int messageBufferSize = MessageHeader.Layout.HeaderLength + BlockHashLength + | ||
| accountAddressesLength.Length + | ||
| +instructionsLength.Length + compiledInstructionsLength + accountKeysBufferSize; | ||
| MemoryStream buffer = new MemoryStream(messageBufferSize); | ||
| byte[] messageHeaderBytes = _messageHeader.ToBytes(); | ||
|
|
||
| buffer.Write(new byte[] { 128 }, 0, 1); | ||
| buffer.Write(messageHeaderBytes, 0, messageHeaderBytes.Length); | ||
| buffer.Write(accountAddressesLength, 0, accountAddressesLength.Length); | ||
| buffer.Write(accountKeysBuffer.ToArray(), 0, accountKeysBuffer.ToArray().Length); | ||
| var encodedRecentBlockHash = Encoders.Base58.DecodeData(RecentBlockHash); | ||
| buffer.Write(encodedRecentBlockHash, 0, encodedRecentBlockHash.Length); | ||
| buffer.Write(instructionsLength, 0, instructionsLength.Length); | ||
|
|
||
| foreach (CompiledInstruction compiledInstruction in compiledInstructions) | ||
| { | ||
| buffer.WriteByte(compiledInstruction.ProgramIdIndex); | ||
| buffer.Write(compiledInstruction.KeyIndicesCount, 0, compiledInstruction.KeyIndicesCount.Length); | ||
| buffer.Write(compiledInstruction.KeyIndices, 0, compiledInstruction.KeyIndices.Length); | ||
| buffer.Write(compiledInstruction.DataLength, 0, compiledInstruction.DataLength.Length); | ||
| buffer.Write(compiledInstruction.Data, 0, compiledInstruction.Data.Length); | ||
| } | ||
|
|
||
| #endregion | ||
|
|
||
| var serializeAddressTableLookups = AddressTableLookupUtils.SerializeAddressTableLookups(AddressTableLookups); | ||
| buffer.Write(serializeAddressTableLookups, 0, serializeAddressTableLookups.Length); | ||
|
|
||
| return buffer.ToArray(); | ||
| } | ||
| } | ||
| } |
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