Rust smart contracts development practice: deployment and invocation

This article will introduce how to deploy a simple example smart contract to the NEAR test network, execute the contract, and query the execution results.

Introduction to the NEAR Network

NEAR Protocol, as a protocol, can support multiple independent networks based on it. The three main networks commonly used are as follows:

1. TestNet - Used to test the functionality and business logic of smart contracts projects.
2. MainNet - The official mainnet, where contracts can be deployed after thorough testing.
3. LocalNet - A locally running network, suitable for private development

NEAR CLI Installation

NEAR CLI is a NodeJS command line interface for interacting with the NEAR network. Installation steps:

1. Install npm
2. Execute the installation command:

sudo npm install -g near-cli

3. Verify Installation:

near --version

Deploying Contracts on TestNet

Register TestNet account

1. Visit the NEAR wallet website to register a new account
2. View account information in the browser

Log in to NEAR CLI

Execute the following command to log in to your account:

near login

View account information

near state <账户名>

Contract Compilation and Deployment

1. Compile the contract to generate a WASM file
2. Create a sub-account for deployment
3. Use the near deploy command to deploy the smart contracts.

call contract function

Use the near call command to invoke functions in the smart contracts, for example:

near call '{"parameter":"value"}' --accountId

transaction query

You can query specific transaction details in NEAR Explorer using the transaction ID.

By following the above steps, we have completed the entire process of smart contracts from compilation to deployment and then to invocation. The next step can be to discuss how to write safer smart contracts from a security perspective.