CosmJS模块化开发从基础包到自定义Stargate模块全攻略【免费下载链接】cosmjsThe Swiss Army knife to power JavaScript based client solutions ranging from Web apps/explorers over browser extensions to server-side clients like faucets/scrapers.项目地址: https://gitcode.com/gh_mirrors/co/cosmjsCosmJS作为Cosmos生态系统中强大的JavaScript开发工具包提供了从Web应用、浏览器扩展到服务器端客户端如水龙头和刮板的全方位支持。本文将带您深入了解CosmJS的模块化架构从核心基础包到自定义Stargate模块的完整开发流程帮助您快速掌握这一瑞士军刀级工具的使用方法。一、CosmJS模块化架构解析CosmJS采用了精心设计的模块化架构通过多个npm包组成的monorepo形式提供功能。这种设计确保了代码质量并让用户可以精确选择所需功能。核心包概览CosmJS生态包含多个核心包每个包专注于特定功能cosmjs/stargate(packages/stargate): 用于Cosmos SDK 0.40Stargate的客户端库cosmjs/cosmwasm(packages/cosmwasm): 支持CosmWasm模块的Stargate链客户端cosmjs/crypto(packages/crypto): 区块链项目的加密功能包括哈希、签名、HD密钥派生等cosmjs/encoding(packages/encoding): 区块链项目的编码辅助工具cosmjs/math(packages/math): 安全整数和金融金额处理的小数运算模块化依赖关系CosmJS的模块化设计体现在清晰的依赖关系上。每个包都有明确的职责右侧包依赖于左侧包如果您需要查看包含应用运行时依赖的完整版本可以查看cosmjs-tree-full.png。二、开发环境搭建开始使用CosmJS进行模块化开发前需要准备以下开发环境系统要求Node.js 20现代浏览器Chromium/Firefox/Safari浏览器扩展开发环境如需要TypeScript支持安装依赖首先克隆CosmJS仓库git clone https://gitcode.com/gh_mirrors/co/cosmjs cd cosmjs然后安装项目依赖yarn install对于特定功能开发您可能需要安装以下核心包dependencies: { cosmjs/proto-signing: ^0.26.4, cosmjs/stargate: ^0.26.4, cosmjs/tendermint-rpc: ^0.26.4 }同时安装开发依赖yarn add --dev ts-proto您还需要安装protocProtocol Buffers编译器本文基于版本3.17。三、基础包使用指南1. 加密功能 (cosmjs/crypto)packages/crypto提供了区块链开发所需的各种加密功能哈希算法SHA-2, Keccak256, Ripemd160签名算法secp256k1, ed25519HD密钥派生BIP-39, SLIP-0010密钥存储的KDF和对称加密PBKDF2, Argon2, XChaCha20Poly1305基本使用示例import { sha256, secp256k1 } from cosmjs/crypto; // 哈希计算 const hash sha256(Buffer.from(hello world)); // 密钥对生成 const { privkey, pubkey } await secp256k1.generateKeyPair(); // 签名 const message Buffer.from(important message); const signature await secp256k1.sign(privkey, message);2. 编码功能 (cosmjs/encoding)packages/encoding提供了区块链开发中常用的编码和解码功能Base64编码/解码Bech32地址编码Hex编码/解码UTF8字符串处理使用示例import { bech32, base64, hex } from cosmjs/encoding; // Bech32地址编码 const address bech32.encode(cosmos, new Uint8Array([0x01, 0x02, 0x03])); // Base64编码 const encoded base64.encode(Buffer.from(hello)); // Hex编码 const hexString hex.encode(Buffer.from(hello));3. 数学功能 (cosmjs/math)packages/math提供了安全处理整数和金融金额的功能import { Decimal, Int53 } from cosmjs/math; // 安全整数处理 const safeNumber Int53.fromString(9007199254740991); // 小数运算金融金额 const amount Decimal.fromUserInput(123.456, 6); const doubled amount.multiply(Decimal.fromAtomics(2, 0));四、Stargate客户端开发packages/stargate是CosmJS的核心包提供了与Cosmos SDK 0.40Stargate兼容的客户端功能。1. 连接到区块链import { StargateClient } from cosmjs/stargate; async function connect() { const client await StargateClient.connect(https://rpc.cosmos.network); console.log(Connected to chain:, await client.getChainId()); console.log(Latest block height:, await client.getHeight()); } connect();2. 创建签名客户端import { DirectSecp256k1HdWallet, SigningStargateClient } from cosmjs/stargate; async function createSigningClient() { const mnemonic economy stock theory fatal elder harbor betray wasp final emotion task crumble siren bottom lizard educate guess current outdoor pair theory focus wife stone; const wallet await DirectSecp256k1HdWallet.fromMnemonic(mnemonic, { prefix: cosmos }); const client await SigningStargateClient.connectWithSigner( https://rpc.cosmos.network, wallet ); return client; }3. 发送交易async function sendTokens() { const client await createSigningClient(); const [firstAccount] await client.getAccounts(); const recipient cosmos1abcdefghijklmnopqrstuvwxyz; const amount [{ denom: uatom, amount: 100000 }]; const fee { amount: [{ denom: uatom, amount: 500 }], gas: 200000, }; const result await client.sendTokens(firstAccount.address, recipient, amount, fee); console.log(Transaction hash:, result.transactionHash); } sendTokens();五、自定义Stargate模块开发全流程CosmJS不仅支持标准Cosmos SDK模块还允许您为自定义模块开发客户端支持。以下是创建自定义Stargate模块客户端的完整流程。步骤1获取Protocol Buffer定义文件首先您需要获取自定义模块的.proto定义文件。通常有两种方式从外部源下载副本到项目中例如使用脚本下载使用Git子模块链接外部仓库CosmJS使用脚本下载定义文件的示例可参考此脚本。步骤2生成TypeScript编解码器使用ts-proto生成TypeScript编解码器protoc \ --plugin./node_modules/.bin/protoc-gen-ts_proto \ --ts_proto_out./path/to/output/directory \ --proto_path./path/to/definitions \ --ts_proto_optesModuleInteroptrue,forceLonglong,useOptionalstrue \ ./path/to/definitions/file.protoCosmJS的stargate包使用的生成脚本可参考此处。步骤3使用自定义消息类型创建包含自定义消息的签名客户端import { DirectSecp256k1HdWallet, Registry } from cosmjs/proto-signing; import { defaultRegistryTypes, SigningStargateClient } from cosmjs/stargate; import { MsgXxx } from ./path/to/generated/codec/my/custom/tx; // 创建包含自定义类型的注册表 const myRegistry new Registry(defaultRegistryTypes); myRegistry.register(/my.custom.MsgXxx, MsgXxx); async function createCustomClient() { const mnemonic your mnemonic here; const signer await DirectSecp256k1HdWallet.fromMnemonic(mnemonic, { prefix: myprefix }); const client await SigningStargateClient.connectWithSigner( my.endpoint.com, signer, { registry: myRegistry } ); return client; }发送自定义消息async function sendCustomMessage() { const client await createCustomClient(); const [firstAccount] await client.getAccounts(); const message { typeUrl: /my.custom.MsgXxx, value: MsgXxx.fromPartial({ foo: bar, creator: firstAccount.address, }), }; const fee { amount: [{ denom: udenom, amount: 120000 }], gas: 100000, }; const response await client.signAndBroadcast(firstAccount.address, [message], fee); console.log(Custom message sent. Transaction hash:, response.transactionHash); }步骤4创建自定义查询服务实例化查询客户端import { createProtobufRpcClient, QueryClient } from cosmjs/stargate; import { Tendermint34Client } from cosmjs/tendermint-rpc; import { QueryClientImpl } from ./path/to/generated/codec/my/custom/query; async function createCustomQueryClient() { const tendermintClient await Tendermint34Client.connect(my.endpoint.com); const queryClient new QueryClient(tendermintClient); const rpcClient createProtobufRpcClient(queryClient); return new QueryClientImpl(rpcClient); }扩展查询客户端// 定义扩展 function setupXxxExtension(base: QueryClient) { const rpcClient createProtobufRpcClient(base); const queryService new QueryClientImpl(rpcClient); return { mymodule: { customQuery: async (foo: string) queryService.MyCustomQuery({ foo }), anotherQuery: async () queryService.MyAnotherQuery({}), }, }; } // 使用扩展 async function useExtendedQueryClient() { const tendermintClient await Tendermint34Client.connect(my.endpoint.com); const queryClient QueryClient.withExtensions(tendermintClient, setupXxxExtension); const result await queryClient.mymodule.customQuery(bar); console.log(Custom query result:, result); }CosmJS如何为默认查询客户端设置bank扩展的示例可参考此处。六、Webpack配置使用Webpack 5时需要显式配置Node.js类型和模块module.exports { plugins: [ new webpack.ProvidePlugin({ Buffer: [buffer, Buffer], }), ], resolve: { fallback: { buffer: false, crypto: false, events: false, path: false, stream: false, string_decoder: false, }, }, };对于CosmJS 0.28版本stream配置有所不同resolve: { fallback: { // ...其他配置 stream: require.resolve(stream-browserify), }, }七、总结与进阶资源CosmJS的模块化设计为Cosmos生态系统的JavaScript开发提供了强大支持。通过本文介绍的基础包使用和自定义Stargate模块开发流程您可以构建从简单查询到复杂交易的全方位区块链应用。进阶学习资源完整API文档cosmos.github.io/cosmjsCosmJS示例guided tour测试用例signingstargateclient.spec.ts自定义模块文档CUSTOM_PROTOBUF_CODECS.md通过这些资源您可以进一步探索CosmJS的强大功能开发出更加复杂和高效的Cosmos生态应用。无论您是构建Web应用、浏览器扩展还是服务器端工具CosmJS的模块化设计都能满足您的需求让开发过程更加灵活和高效。【免费下载链接】cosmjsThe Swiss Army knife to power JavaScript based client solutions ranging from Web apps/explorers over browser extensions to server-side clients like faucets/scrapers.项目地址: https://gitcode.com/gh_mirrors/co/cosmjs创作声明：本文部分内容由AI辅助生成（AIGC），仅供参考