Here is a well -structured article on the extraction of transmission from the transaction in Solana using rust:
Extracting gears from a coded transaction in rust
As a developer working with Solana, you probably accept coded transactions that contain different data, including transmission information. However, when it comes to extracting the sender and receiver accounts, you can encounter problems due to the comprehensive coding scheme used by Solana.
In this article we deal with how to successfully map the consignor and receiver’s bills from the rust transaction. We will also provide several proven procedures to address coded transactions in your rust code.
Coded transactions on Solane
Before you dive into a solution, let’s quickly examine how coded transactions work on Solane. Each transaction is coded as a byte field, which is then divided into four parts:
V0(version 0): Contains a transaction metadata.
V1(version 1): Contains transaction data.
V2(version 2): contains additional metadata and instructions.
V3(version 3): Contains transactions data.
In particular, the “V3” part contains information about the transmission we focus on for extraction.
Extracting transmission data from v3
To extract the transfers from the coded transaction, you must access the “V3” section. Here is an overview of a high level on how to do this:
`rust
Use solan_sdk :: transaction_input :: transactionInput;
Use solan_sdk :: PUBKEY :: PUBKEY;
Use solan_sdk :: Signature :: {Keypair, Signatureerror};
Use solan_sdk :: thing :: bytes;
Transmission Struct {
Sender: PUBKEY,
Receiver: PUBKEY,
}
`
You can use the following code to extract the transmission data from the coded transaction:
`rust
FN extract_transfer (transaction: & transactionsinput) -> result
Let V3 = transaction.Data ();
If! v3.is_some () {)
Return ERR (Error :: Invaliddata);
}
Let v3_data = v3.as_ref ()?;
Let transfer_type = v3_data.v0 as U8;
Match transmission_type {
1 => OK (transmission {
Sender: v3_data.V1.to_bytes (),
receiver: v3_data.v2,
}),
_ => ERR (Error :: Invaliddata),
}
}
`
Sender and mapping receiver accounts
To properly map the sender and receiver accounts, you must extract “PUBKEY” data from the transaction input. Here’s an updated version of the code:
`rust
Fn extract_account (transaction: & transactionsinput) -> Result
Let Account_input = transaction.data ()?;
If! cance_input.is_some () {
Return ERR (Error :: Invaliddata);
}
Flight account_data = account_input.as_ref ()?;
Flight Account_pubkey = PUBKEY :: From_bytes_slice (& cance_data)?;
OK (account_pubkey)
}
`
A combination of extracted data
After extracting the sender’s and receiver’s accounts, you can combine them and create a transmission structure. Here’s an updated version of the code:
`rust
Transmission Struct {
Sender: PUBKEY,
Receiver: PUBKEY,
}
FN extract_transfer (transaction: & transactionsinput) -> result
// … (the same as before)
Flight account_pubkey = extract_account (transaction)?;
Let the transfer = transfer {sender: accounts_pubkey, receiver: v3_data.v2};
OK (transfer)
}
`
Proven procedures to process coded transactions
When working with coded transactions in rust, keep in mind the following proven procedures:
- Always verify and disinfect the input data to prevent errors.
- Use the mechanisms of handling errors to capture and solve potential problems.
- Carefully extract the transmission data, taking into account all possible scenarios (eg invalid metadata).
- Map accounts correctly using extracted “PUBKEY” data.
- Combine extracted data and create a meaningful structure.