文件列表:

cluster-devnet.env (24, 2021-08-29)
cluster-mainnet-beta.env (30, 2021-08-29)
cluster-testnet.env (25, 2021-08-29)
package.json (1694, 2021-08-29)
src (0, 2021-08-29)
src\client (0, 2021-08-29)
src\client\main.ts (720, 2021-08-29)
src\client\trustedproperties.ts (6754, 2021-08-29)
src\client\utils.ts (2575, 2021-08-29)
src\program-rust (0, 2021-08-29)
src\program-rust\Cargo.lock (84439, 2021-08-29)
src\program-rust\Cargo.toml (443, 2021-08-29)
src\program-rust\src (0, 2021-08-29)
src\program-rust\src\entrypoint.rs (1846, 2021-08-29)
src\program-rust\src\error.rs (1059, 2021-08-29)
src\program-rust\src\instruction.rs (5678, 2021-08-29)
src\program-rust\src\lib.rs (331, 2021-08-29)
src\program-rust\src\processor.rs (17875, 2021-08-29)
src\program-rust\src\state.rs (3459, 2021-08-29)
tsconfig.json (321, 2021-08-29)
yarn.lock (84349, 2021-08-29)

[![Build status][travis-image]][travis-url] [](https://gitpod.io/#https://github.com/solana-labs/example-helloworld) [travis-image]: https://travis-ci.org/solana-labs/example-helloworld.svg?branch=master [travis-url]: https://travis-ci.org/solana-labs/example-helloworld # Hello world on Solana This project demonstrates how to use the [Solana Javascript API](https://github.com/solana-labs/solana-web3.js) to interact with programs on the Solana blockchain. The project comprises of: * An on-chain hello world program * A client that can send a "hello" to an account and get back the number of times "hello" has been sent ## Translations - [Traditional Chinese](README_ZH_TW.md) - [Simplified Chinese](README_ZH_CN.md) ## Table of Contents - [Hello world on Solana](#hello-world-on-solana) - [Table of Contents](#table-of-contents) - [Quick Start](#quick-start) - [Start local Solana cluster](#start-local-solana-cluster) - [Build the on-chain program](#build-the-on-chain-program) - [Run the client](#run-the-client) - [Expected output](#expected-output) - [Not seeing the expected output?](#not-seeing-the-expected-output) - [Customizing the Program](#customizing-the-program) - [Learn about Solana](#learn-about-solana) - [Learn about the client](#learn-about-the-client) - [Entrypoint](#entrypoint) - [Establish a connection to the cluster](#establish-a-connection-to-the-cluster) - [Load the helloworld on-chain program if not already loaded](#load-the-helloworld-on-chain-program-if-not-already-loaded) - [Send a "Hello" transaction to the on-chain program](#send-a-hello-transaction-to-the-on-chain-program) - [Query the Solana account used in the "Hello" transaction](#query-the-solana-account-used-in-the-hello-transaction) - [Learn about the on-chain program](#learn-about-the-on-chain-program) - [Programming on Solana](#programming-on-Solana) - [Pointing to a public Solana cluster](#pointing-to-a-public-solana-cluster) - [Expand your skills with advanced examples](#expand-your-skills-with-advanced-examples) ## Quick Start [](https://gitpod.io/#https://github.com/solana-labs/example-helloworld) If you decide to open in Gitpod then refer to [README-gitpod.md](README-gitpod.md), otherwise continue reading. The following dependencies are required to build and run this example, depending on your OS, they may already be installed: - Install node (v14 recommended) - Install npm - Install the latest Rust stable from https://rustup.rs/ - Install Solana v1.7.8 or later from https://docs.solana.com/cli/install-solana-cli-tools If this is your first time using Rust, these [Installation Notes](README-installation-notes.md) might be helpful. ### Configure CLI > If you're on Windows, it is recommended to use [WSL](https://docs.microsoft.com/en-us/windows/wsl/install-win10) to run these commands 1. Set CLI config url to localhost cluster ```bash $ solana config set --url localhost ``` 2. Create CLI Keypair If this is your first time using the Solana CLI, you will need to generate a new keypair: ```bash $ solana-keygen new ``` ### Start local Solana cluster This example connects to a local Solana cluster by default. Start a local Solana cluster: ```bash $ solana-test-validator ``` > **Note**: You may need to do some [system tuning](https://docs.solana.com/running-validator/validator-start#system-tuning) (and restart your computer) to get the validator to run Listen to transaction logs: ```bash $ solana logs ``` ### Install npm dependencies ```bash $ npm install ``` ### Build the on-chain program There is both a Rust and C version of the on-chain program, whichever is built last will be the one used when running the example. ```bash $ npm run build:program-rust ``` ```bash $ npm run build:program-c ``` ### Deploy the on-chain program ```bash $ solana program deploy dist/program/helloworld.so ``` ### Run the JavaScript client ```bash $ npm run start ``` ### Expected output Public key values will differ: ```bash Let's say hello to a Solana account... Connection to cluster established: http://localhost:8899 { 'feature-set': 2045430***2, 'solana-core': '1.7.8' } Using account AiT1QgeYaK86Lf9kudqKthQPCWwpG8vFA1bAAioBoF4X containing 0.00141872 SOL to pay for fees Using program Dro9uk45fxMcKWGb1eWALujbTssh6DW8mb4x8x3Eq5h6 Creating account 8MBmHtJvxpKdYhdw6yPpedp6X6y2U9dCpdYaZJdmwV3A to say hello to Saying hello to 8MBmHtJvxpKdYhdw6yPpedp6X6y2U9dCpdYaZJdmwV3A 8MBmHtJvxpKdYhdw6yPpedp6X6y2U9dCpdYaZJdmwV3A has been greeted 1 times Success ``` #### Not seeing the expected output? - Ensure you've [started the local cluster](#start-local-solana-cluster), [built the on-chain program](#build-the-on-chain-program) and [deployed the program to the cluster](#deploy-the-on-chain-program). - Inspect the program logs by running `solana logs` to see why the program failed. - ```bash Transaction executed in slot 5621: Signature: 4pya5iyvNfAZj9sVWHzByrxdKB84uA5sCxLceBwr9UyuETX2QwnKg56MgBKWSM4breVRzHmpb1EZQXFPPmJnEtsJ Status: Error processing Instruction 0: Program failed to complete Log Messages: Program G5bbS1ipWzqQhekkiCLn6u7Y1jJdnGK85ceSYLx2kKbA invoke [1] Program log: Hello World Rust program entrypoint Program G5bbS1ipWzqQhekkiCLn6u7Y1jJdnGK85ceSYLx2kKbA consumed 200000 of 200000 compute units Program failed to complete: exceeded maximum number of instructions allowed (200000) at instruction #334 Program G5bbS1ipWzqQhekkiCLn6u7Y1jJdnGK85ceSYLx2kKbA failed: Program failed to complete ### Customizing the Program To customize the example, make changes to the files under `/src`. If you change any files under `/src/program-rust` or `/src/program-c` you will need to [rebuild the on-chain program](#build-the-on-chain-program) and [redeploy the program](#deploy-the-on-chain-program). Now when you rerun `npm run start`, you should see the results of your changes. ## Learn about Solana More information about how Solana works is available in the [Solana documentation](https://docs.solana.com/) and all the source code is available on [github](https://github.com/solana-labs/solana) Further questions? Visit us on [Discord](https://discordapp.com/invite/pquxPsq) ## Learn about the client The client in this example is written in TypeScript using: - [Solana web3.js SDK](https://github.com/solana-labs/solana-web3.js) - [Solana web3 API](https://solana-labs.github.io/solana-web3.js) ### Entrypoint The [client's entrypoint](https://github.com/solana-labs/example-helloworld/blob/ad52dc719cdc96d45ad8e308e8759abf4792b667/src/client/main.ts#L13) does five things. ### Establish a connection to the cluster The client establishes a connection with the cluster by calling [`establishConnection`](https://github.com/solana-labs/example-helloworld/blob/ad52dc719cdc96d45ad8e308e8759abf4792b667/src/client/hello_world.ts#L92). ### Establish an account to pay for transactions The client ensures there is an account available to pay for transactions, and creates one if there is not, by calling [`establishPayer`](https://github.com/solana-labs/example-helloworld/blob/ad52dc719cdc96d45ad8e308e8759abf4792b667/src/client/hello_world.ts#L102). ### Check if the helloworld on-chain program has been deployed In [`checkProgram`](https://github.com/solana-labs/example-helloworld/blob/ad52dc719cdc96d45ad8e308e8759abf4792b667/src/client/hello_world.ts#L144), the client loads the keypair of the deployed program from `./dist/program/helloworld-keypair.json` and uses the public key for the keypair to fetch the program account. If the program doesn't exist, the client halts with an error. If the program does exist, it will create a new account with the program assigned as its owner to store program state (number of hello's processed). ### Send a "Hello" transaction to the on-chain program The client then constructs and sends a "Hello" transaction to the program by calling [`sayHello`](https://github.com/solana-labs/example-helloworld/blob/ad52dc719cdc96d45ad8e308e8759abf4792b667/src/client/hello_world.ts#L209). The transaction contains a single very simple instruction that primarily carries the public key of the helloworld program account to call and the "greeter" account to which the client wishes to say "Hello" to. ### Query the Solana account used in the "Hello" transaction Each time the client says "Hello" to an account, the program increments a numerical count in the "greeter" account's data. The client queries the "greeter" account's data to discover the current number of times the account has been greeted by calling [`reportGreetings`](https://github.com/solana-labs/example-helloworld/blob/ad52dc719cdc96d45ad8e308e8759abf4792b667/src/client/hello_world.ts#L226). ## Learn about the on-chain program The [on-chain helloworld program](/src/program-rust/Cargo.toml) is a Rust program compiled to [Berkley Packet Format (BPF)](https://en.wikipedia.org/wiki/Berkeley_Packet_Filter) and stored as an [Executable and Linkable Format (ELF) shared object](https://en.wikipedia.org/wiki/Executable_and_Linkable_Format). The program is written using: - [Solana Rust SDK](https://github.com/solana-labs/solana/tree/master/sdk) ### Programming on Solana To learn more about Solana programming model refer to the [Programming Model Overview](https://docs.solana.com/developing/programming-model/overview). To learn more about developing programs on Solana refer to the [On-Chain Programs Overview](https://docs.solana.com/developing/on-chain-programs/overview) ## Pointing to a public Solana cluster Solana maintains three public clusters: - `devnet` - Development cluster with airdrops enabled - `testnet` - Tour De Sol test cluster without airdrops enabled - `mainnet-beta` - Main cluster Use the Solana CLI to configure which cluster to connect to. To point to `devnet`: ```bash $ solana config set --url devnet ``` To point back to the local cluster: ```bash $ solana config set --url localhost ``` ## Expand your skills with advanced examples There is lots more to learn; The following examples demonstrate more advanced features like custom errors, advanced account handling, suggestions for data serialization, benchmarking, etc... - [Programming Examples](https://github.com/solana-labs/solana-program-library/tree/master/examples) - [Token Program](https://github.com/solana-labs/solana-program-library/tree/master/token) - [Token Swap Program](https://github.com/solana-labs/solana-program-library/tree/master/token-swap)

近期下载者：

相关文件：

评论：[我要评论] [举报此文件]

收藏者：