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Optimizing Vote Accounts Retrieval in Solana: A Solution Without RPC Calls
Solana, a fast and scalable blockchain platform, allows developers to create decentralized applications (dApps) that interact with the network through its Rust-based client. However, one of the most common operations on the Solana network is retrieving vote accounts, which are essential for voting and governance in DeFi projects.
In this article, we’ll explore a method that achieves the functionality of getting vote accounts without relying on RPC (Remote Procedure Call) calls. By avoiding RPC calls, we can improve performance, reduce latency, and increase scalability.
The Current Approach
To get vote accounts, developers typically make an RPC call to the Solana node’s getVoteAccounts function, which returns two arrays: one containing current validators and another with new validators added. This approach is straightforward but comes with its own set of limitations.
For example, when we make an RPC call, Solana nodes must perform various checks, such as validating the signatures and verifying the sender’s identity. These operations can be computationally expensive and may introduce latency into our application.
The Optimized Approach
To overcome these challenges, we can utilize the getVoteAccounts function without making an RPC call by leveraging the solana-program crate, which provides a way to interact with Solana nodes programmatically.
Here’s a step-by-step guide on how to achieve this:
- Install dependencies: First, install the necessary dependencies using npm or yarn:
npm install --save solana program
Alternatively, you can use cargo if you’re working in a Rust environment.
- Create a program: Create a new Solana program by defining a contract with a single function that returns
VoteAccount[]. For this example, let’s call itGetVoteAccounts:
use solana_program::{
account_info::{next_account_info, AccountInfo},
entrypoint::ProgramResult,
msg,
program_error::PrintError,
pubkey::Pubkey,
};
pub struct GetVoteAccounts { .
// Define the variables and functions needed for this example
} }
impl GetVoteAccounts { .
fn get_vote_accounts(&self) -> ProgramResult, String> {;
let account_info = next_account_info(Pubkey::new());
let vote_accounts = solana_program::program_message(
&GetVoteAccounts,
&[account_info],
vec![], // no additional data needed
|msg| println!("Vote accounts: {:?}", msg)
)
} }
} }
- Set up the program
: After defining your contract, you will need to set up a Solana program in a file called
main.rs. This file contains the necessary code to compile and run the program:
use solana_program::{
account_info::{next_account_info, AccountInfo},
entrypoint::ProgramResult,
msg,
program_error::PrintError,
pubkey::Pubkey,
};
pub fn main() -> ProgramResult { {) .
// Create a new Solana program
GetVoteAccounts { .. } = GetVoteAccounts ::default();
// Compile the program
let(program_id, entrypoint) = solana_program::compile(
&main,
&["main"], // optional: module path or name
"get_vote_accounts", // optional: file path or name
&[], // no additional data needed
0, // max instructions per call
)?;
println!("Program ID: {}", program_id);
println!("Entry point: {}", entrypoint);
// Run the program
solana_program::run(
&GetVoteAccounts{..},
vec![], // no additional accounts or data needed
&[], // no arguments to pass
0 , // max transactions per call
)?;
Ok(())
} }
4.