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Solana: How to construct input of rust program that is fed into solana rbpf?

Constructing a Rust Program for Solana RBPF (Reserve-Based Proof-of-Function)

In this article, we’ll walk through the process of building and deploying a Rust program that can be fed into Solana’s Reserve-Based Proof-of-Function (RBPF) to create a decentralized application.

Getting Started

To begin, install the necessary dependencies for Solana and Rust. Run the following command in your terminal:

cargo new solana_hello --lib

This will create a new Rust library project called solana_hello. You can then build and run it with:

カーゴビルド --リリース


カーゴ・ラン -- リリース

Building a Hello World Program

について hello.rs file defines our program as a simple function that prints “Hello, World!” to the Solana blockchain. Let’s add some error handling and logging for fun.

anchor_lang::prelude::* を使います；




declare_id!("3bKgMxR7MwXLzGDfdsW8HsNYSSxRejf6uF69Mmupfx7")；




#[プログラム］


pub mod hello {


    super::* を使用する；




    pub fn hello() -> 結果<(), AnchorError> {


        let _ = ask!(get_state_query::state as Result)アカウント情報")?


        OK(())


    }


}

In this code, we’ve added a simple hello function that retrieves the current account information using the get_state_query function. We’re also returning a result from this function to indicate whether the operation was successful.

Deploying to Solana

To deploy our program to Solana, we’ll use the Anchor CLI. Run the following command:

アンカー・ノード・ビルド --リリース --出力パス/to/デプロイ

This will create a deployment package at path/to/deploy. We can then upload this package to a Solana node using the anchor command.

Adding an Input for RBPF

To use our program in Solana’s RBPF, we need to add an input parameter. In this case, we’ll define a new input type called hello_input.

Add the following code to the hello.rs file:

anchor_lang::prelude::* を使います；




declare_id!("3bKgMxR7MwXLzGDfdsW8HsNYSSxRejf6uF69Mmupfx7")；




#[プログラム］


pub mod hello {


    super::* を使用する；




    pub fn hello(input: hello_input::HelloInput) -> 結果<(), AnchorError> {


        let _ = ask!(get_state_query::state as Result)アカウント情報")?


        OK(())


    }


}

について hello_input type represents a single input parameter. In this case, we’re expecting a HelloInput struct with a single field called name.

Creating an RBPF Contract

To create an RBPF contract that uses our program as the function to call, we’ll define a new contract using Anchor’s contract macro.

anchor_lang::prelude::* を使います；




declare_id!("3bKgMxR7MwXLzGDfdsW8HsNYSSxRejf6uF69Mmupfx7")；




#[プログラム］


pub mod hello {


    super::* を使用する；




    pub fn hello(input: hello_input::HelloInput) -> 結果<(), AnchorError> {


        let _ = ask!(get_state_query::state as Result)アカウント情報")?


        OK(())


    }


}




contract MyRBPFContract {


    use contract::prelude::*;


    use hello::*;




    async fn main() -> Result<()> {


        let account_id = get_account().await?;


        let input = hello_input::HelloInput {


            name: b"World".to_vec(),


        };




        let result = MyRBPFContract::invoke(input, &[]);


        OK(())


    }


}

In this code, we’ve defined a new contract called MyRBPFContract. The main function creates an account and initializes the input parameter using our hello_input type.

Building and Running

Solana: How to construct input of rust program that is fed into solana rbpf?

To build and run the RBPF contract, run the following commands:

カーゴビルド --リリース


アンカー・ノード・ビルド --リリース --出力パス/to/デプロイ

This will create a new deployment package at path/to/deploy. You can then upload this package to a Solana node using the `anchor’ command.

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