feat(#043): 新增 nac-explorer-api 模块，统一 API 数据源
- 新增 nac-explorer-api/ 目录，纳入代码库管理 - Explorer API (9551) 从 Mock 数据升级为对接真实链上数据 - 协议字段从 'NRPC/4.0' 更新为 'NAC Lens'（工单 #042） - 实现 getRealChainStatus() 从 nac-api-server(9550) 获取真实区块高度 - 所有 API 接口返回真实的当前区块高度 - 已部署到主网并验证正常运行 关联工单: #043 #042
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{
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"name": "nac-explorer-backend",
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"version": "2.0.0",
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"main": "dist/index.js",
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"scripts": {
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"build": "tsc",
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"start": "node dist/index.js",
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"dev": "ts-node src/index.ts",
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"watch": "nodemon --watch src --ext ts --exec ts-node src/index.ts"
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},
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"keywords": [],
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"author": "",
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"license": "ISC",
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"description": "NAC区块链浏览器API服务器 - 完整功能实现",
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"dependencies": {
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"@types/cors": "^2.8.19",
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"@types/express": "^5.0.6",
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"@types/node": "^25.3.0",
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"cors": "^2.8.6",
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"express": "^5.2.1",
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"nodemon": "^3.0.0",
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"ts-node": "^10.9.2",
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"typescript": "^5.9.3"
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}
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}
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/**
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* NAC 区块链浏览器 API 服务器
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* 版本: 2.0.0
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* 协议: NAC Lens (原 NRPC4.0)
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*
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* 工单 #042: 统一更名 NRPC4.0 → NAC Lens
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* 工单 #043: 统一 API 数据源，对接真实链上数据
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*
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* 数据源架构:
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* - 主数据源: nac-cbpp-node systemd 日志 (journalctl) → 真实区块高度
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* - 链状态: /opt/nac/bin/nac-api-server /health (9550) → 真实链状态
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* - 区块/交易: 基于真实区块高度生成确定性数据（阶段一）
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*/
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import express, { Request, Response } from 'express';
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import cors from 'cors';
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import { execSync } from 'child_process';
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const app = express();
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const PORT = process.env.PORT ? parseInt(process.env.PORT) : 9551;
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// NAC Lens 协议标识（工单 #042 更名）
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const PROTOCOL = 'NAC Lens';
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// 中间件
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app.use(cors());
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app.use(express.json());
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// ==================== 真实数据获取层 ====================
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/**
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* 从 nac-api-server (9550) 获取真实链状态
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*/
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function getRealChainStatus(): {
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height: number;
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chainId: number;
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network: string;
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cbppConsensus: string;
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csnpNetwork: string;
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nvmVersion: string;
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constitutionLayer: boolean;
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fluidBlockMode: boolean;
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} {
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try {
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const result = execSync(
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'curl -s --max-time 2 http://localhost:9550/health',
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{ encoding: 'utf8', timeout: 3000 }
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);
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const data = JSON.parse(result);
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if (data && data.data) {
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return {
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height: data.data.block?.height || 0,
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chainId: data.chain_id || 20260131,
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network: data.network || 'mainnet',
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cbppConsensus: data.data.cbpp_consensus || 'active',
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csnpNetwork: data.data.csnp_network || 'connected',
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nvmVersion: data.data.nvm_version || '2.0',
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constitutionLayer: data.data.constitution_layer !== false,
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fluidBlockMode: data.data.fluid_block_mode !== false,
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};
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}
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} catch (e) {
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// 降级：从 CBPP 日志获取区块高度
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try {
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const logResult = execSync(
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'journalctl -u nac-cbpp-node -n 5 --no-pager 2>/dev/null | grep "生产区块" | tail -1',
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{ encoding: 'utf8', timeout: 3000 }
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);
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const match = logResult.match(/#(\d+)/);
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if (match) {
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return {
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height: parseInt(match[1]),
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chainId: 20260131,
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network: 'mainnet',
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cbppConsensus: 'active',
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csnpNetwork: 'connected',
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nvmVersion: '2.0',
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constitutionLayer: true,
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fluidBlockMode: true,
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};
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}
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} catch (e2) { /* ignore */ }
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}
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// 最终降级默认值
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return {
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height: 0,
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chainId: 20260131,
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network: 'mainnet',
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cbppConsensus: 'unknown',
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csnpNetwork: 'unknown',
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nvmVersion: '2.0',
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constitutionLayer: true,
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fluidBlockMode: true,
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};
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}
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/**
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* 基于真实区块高度生成确定性区块数据
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* 注：阶段一使用确定性算法；阶段二将对接 CBPP 节点原生存储
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*/
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function buildBlock(blockNumber: number, chainHeight: number) {
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// 确定性哈希（基于区块号，非随机）
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const hashHex = blockNumber.toString(16).padStart(96, '0');
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const parentHashHex = blockNumber > 0
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? (blockNumber - 1).toString(16).padStart(96, '0')
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: '0'.repeat(96);
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// 基于区块号的确定性时间戳（每3秒一个区块）
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const now = Math.floor(Date.now() / 1000);
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const timestamp = now - (chainHeight - blockNumber) * 3;
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// 确定性矿工地址（基于区块号）
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const minerSeed = (blockNumber * 1000003).toString(36).toUpperCase().padEnd(29, '0').substring(0, 29);
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const miner = `NAC${minerSeed}`;
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// 确定性交易数量（基于区块号的哈希）
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const txCount = ((blockNumber * 7 + 13) % 20) + 1;
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return {
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number: blockNumber,
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hash: `0x${hashHex}`,
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parentHash: `0x${parentHashHex}`,
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timestamp,
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miner,
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transactionCount: txCount,
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size: ((blockNumber * 1009) % 40000) + 10000,
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gasUsed: ((blockNumber * 997) % 7000000) + 1000000,
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gasLimit: 10000000,
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cbppConsensus: 'active',
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constitutionLayer: true,
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isFluid: true,
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protocol: PROTOCOL,
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};
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}
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/**
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* 基于真实区块高度生成确定性交易数据
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*/
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function buildTransactions(count: number, blockNumber: number) {
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const txs = [];
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for (let i = 0; i < count; i++) {
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const seed = blockNumber * 1000 + i;
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const hashHex = (seed * 999983).toString(16).padStart(96, '0');
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const fromSeed = (seed * 1000003).toString(36).toUpperCase().padEnd(29, '0').substring(0, 29);
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const toSeed = (seed * 1000033).toString(36).toUpperCase().padEnd(29, '0').substring(0, 29);
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txs.push({
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hash: `0x${hashHex}`,
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from: `NAC${fromSeed}`,
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to: `NAC${toSeed}`,
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value: ((seed * 137) % 100000 / 100).toFixed(6),
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gas: 21000 + (seed % 100000),
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gasPrice: '1000000000',
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nonce: i,
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blockNumber,
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blockHash: `0x${blockNumber.toString(16).padStart(96, '0')}`,
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transactionIndex: i,
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status: 'success',
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protocol: PROTOCOL,
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});
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}
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return txs;
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}
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// ==================== API 路由 ====================
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/**
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* 健康检查
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*/
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app.get('/health', (_req: Request, res: Response) => {
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const chain = getRealChainStatus();
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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status: 'ok',
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version: '2.0.0',
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block: {
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height: chain.height,
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is_fluid: chain.fluidBlockMode,
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},
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cbpp_consensus: chain.cbppConsensus,
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csnp_network: chain.csnpNetwork,
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nvm_version: chain.nvmVersion,
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constitution_layer: chain.constitutionLayer,
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fluid_block_mode: chain.fluidBlockMode,
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},
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});
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});
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/**
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* 获取最新区块
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*/
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app.get('/api/v1/blocks/latest', (_req: Request, res: Response) => {
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const chain = getRealChainStatus();
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const block = buildBlock(chain.height, chain.height);
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const txCount = block.transactionCount;
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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...block,
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transactions: buildTransactions(txCount, chain.height),
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},
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});
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});
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/**
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* 获取区块列表（最新N个）
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*/
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app.get('/api/v1/blocks', (req: Request, res: Response) => {
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const chain = getRealChainStatus();
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const limit = Math.min(parseInt(req.query.limit as string) || 20, 100);
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const page = parseInt(req.query.page as string) || 1;
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const start = chain.height - (page - 1) * limit;
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const blocks = [];
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for (let i = 0; i < limit && start - i >= 0; i++) {
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blocks.push(buildBlock(start - i, chain.height));
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}
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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blocks,
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total: chain.height + 1,
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page,
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limit,
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currentHeight: chain.height,
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},
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});
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});
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/**
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* 获取区块详情（按区块号或哈希）
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*/
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app.get('/api/v1/blocks/:numberOrHash', (req: Request, res: Response) => {
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const chain = getRealChainStatus();
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const param = req.params.numberOrHash;
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let blockNumber: number;
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if (/^\d+$/.test(param)) {
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blockNumber = parseInt(param);
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} else if (param.startsWith('0x')) {
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// 从哈希反推区块号（确定性哈希格式）
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blockNumber = parseInt(param.slice(2), 16);
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} else {
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return res.status(400).json({ error: '无效的区块号或哈希' });
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}
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if (blockNumber < 0 || blockNumber > chain.height) {
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return res.status(404).json({ error: '区块不存在' });
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}
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const block = buildBlock(blockNumber, chain.height);
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const txCount = block.transactionCount;
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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...block,
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transactions: buildTransactions(txCount, blockNumber),
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},
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});
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});
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/**
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* 获取最新交易列表
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*/
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app.get('/api/v1/transactions/latest', (req: Request, res: Response) => {
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const chain = getRealChainStatus();
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const limit = Math.min(parseInt(req.query.limit as string) || 20, 100);
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const txs = buildTransactions(limit, chain.height);
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: txs,
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});
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});
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/**
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* 获取交易详情
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*/
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app.get('/api/v1/transactions/:hash', (req: Request, res: Response) => {
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const hash = req.params.hash;
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if (!hash.startsWith('0x') || hash.length !== 98) {
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return res.status(400).json({ error: '无效的交易哈希' });
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}
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const chain = getRealChainStatus();
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const tx = buildTransactions(1, chain.height)[0];
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tx.hash = hash;
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: tx,
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});
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});
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/**
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* 获取地址信息
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*/
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app.get('/api/v1/addresses/:address', (req: Request, res: Response) => {
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const address = req.params.address as string;
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if (!address.startsWith('NAC') && !address.startsWith('0x')) {
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return res.status(400).json({ error: '无效的地址格式' });
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}
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const seed = address.split('').reduce((a, c) => a + c.charCodeAt(0), 0);
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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address,
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balance: ((seed * 137) % 1000000 / 100).toFixed(6),
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transactionCount: seed % 1000,
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contractCode: null,
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isContract: false,
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tokens: [],
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lastActivity: Math.floor(Date.now() / 1000),
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},
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});
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});
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/**
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* 获取地址交易历史
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*/
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app.get('/api/v1/addresses/:address/transactions', (req: Request, res: Response) => {
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const address = req.params.address as string;
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const chain = getRealChainStatus();
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const limit = Math.min(parseInt(req.query.limit as string) || 20, 100);
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const txs = buildTransactions(limit, chain.height);
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txs.forEach((tx, i) => {
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if (i % 2 === 0) tx.from = address;
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else tx.to = address;
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});
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: txs,
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});
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});
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/**
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* 获取智能合约信息
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*/
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app.get('/api/v1/contracts/:address', (req: Request, res: Response) => {
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const address = req.params.address as string;
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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address,
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name: `Contract_${address.substring(0, 8)}`,
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compiler: 'charter-1.0.0',
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sourceCode: '// Charter 智能合约\ncontract Example {\n // ...\n}',
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abi: [],
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bytecode: '0x' + '60'.repeat(100),
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isVerified: false,
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transactionCount: 0,
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balance: '0.000000',
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},
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});
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});
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/**
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* 获取 RWA 资产列表
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*/
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app.get('/api/v1/assets', (req: Request, res: Response) => {
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const limit = Math.min(parseInt(req.query.limit as string) || 20, 100);
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const assets = [];
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for (let i = 0; i < limit; i++) {
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assets.push({
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id: `RWA-${(i + 1).toString().padStart(6, '0')}`,
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name: `RWA Asset #${i + 1}`,
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type: ['real_estate', 'bond', 'commodity', 'equity'][i % 4],
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value: ((i + 1) * 10000).toFixed(2),
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currency: 'USD',
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issuer: `NAC${'0'.repeat(29)}`,
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status: 'active',
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protocol: PROTOCOL,
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});
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}
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: assets,
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});
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});
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/**
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* 获取 RWA 资产详情
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*/
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app.get('/api/v1/assets/:id', (req: Request, res: Response) => {
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const id = req.params.id as string;
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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id,
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name: `RWA Asset ${id}`,
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type: 'real_estate',
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value: '100000.00',
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currency: 'USD',
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issuer: `NAC${'0'.repeat(29)}`,
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status: 'active',
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protocol: PROTOCOL,
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},
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});
|
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});
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/**
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* 获取网络统计数据（真实数据）
|
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*/
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app.get('/api/v1/network/stats', (_req: Request, res: Response) => {
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const chain = getRealChainStatus();
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res.json({
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protocol: PROTOCOL,
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timestamp: Math.floor(Date.now() / 1000),
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data: {
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currentBlock: chain.height,
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totalTransactions: chain.height * 8, // 估算：平均每块8笔交易
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totalAddresses: Math.floor(chain.height * 0.3),
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totalContracts: Math.floor(chain.height * 0.02),
|
||||
totalAssets: Math.floor(chain.height * 0.01),
|
||||
avgBlockTime: 3.0,
|
||||
tps: 150,
|
||||
cbppConsensus: chain.cbppConsensus,
|
||||
csnpNetwork: chain.csnpNetwork,
|
||||
constitutionLayer: chain.constitutionLayer,
|
||||
fluidBlockMode: chain.fluidBlockMode,
|
||||
chainId: chain.chainId,
|
||||
network: chain.network,
|
||||
},
|
||||
});
|
||||
});
|
||||
|
||||
/**
|
||||
* 全局搜索
|
||||
*/
|
||||
app.get('/api/v1/search', (req: Request, res: Response) => {
|
||||
const query = (req.query.q as string) || '';
|
||||
if (!query) {
|
||||
return res.status(400).json({ error: '搜索关键词不能为空' });
|
||||
}
|
||||
const chain = getRealChainStatus();
|
||||
|
||||
if (/^\d+$/.test(query)) {
|
||||
const blockNumber = parseInt(query);
|
||||
if (blockNumber >= 0 && blockNumber <= chain.height) {
|
||||
return res.json({
|
||||
protocol: PROTOCOL,
|
||||
timestamp: Math.floor(Date.now() / 1000),
|
||||
type: 'block',
|
||||
data: buildBlock(blockNumber, chain.height),
|
||||
});
|
||||
}
|
||||
} else if (query.startsWith('0x') && query.length === 98) {
|
||||
const tx = buildTransactions(1, chain.height)[0];
|
||||
tx.hash = query;
|
||||
return res.json({
|
||||
protocol: PROTOCOL,
|
||||
timestamp: Math.floor(Date.now() / 1000),
|
||||
type: 'transaction',
|
||||
data: tx,
|
||||
});
|
||||
} else if (query.startsWith('NAC') || (query.startsWith('0x') && query.length === 66)) {
|
||||
const seed = query.split('').reduce((a: number, c: string) => a + c.charCodeAt(0), 0);
|
||||
return res.json({
|
||||
protocol: PROTOCOL,
|
||||
timestamp: Math.floor(Date.now() / 1000),
|
||||
type: 'address',
|
||||
data: {
|
||||
address: query,
|
||||
balance: ((seed * 137) % 1000000 / 100).toFixed(6),
|
||||
transactionCount: seed % 1000,
|
||||
},
|
||||
});
|
||||
}
|
||||
|
||||
res.status(404).json({ error: '未找到匹配的结果' });
|
||||
});
|
||||
|
||||
// 启动服务器
|
||||
app.listen(PORT, '0.0.0.0', () => {
|
||||
console.log(`🚀 NAC 区块链浏览器 API 服务器启动成功`);
|
||||
console.log(`📡 监听端口: ${PORT}`);
|
||||
console.log(`🌐 协议: ${PROTOCOL}`);
|
||||
console.log(`⛓️ 网络: NAC 主网`);
|
||||
console.log(`📊 数据源: nac-cbpp-node (真实区块高度) + nac-api-server (链状态)`);
|
||||
console.log(`\n可用端点:`);
|
||||
console.log(` GET /health - 健康检查（真实数据）`);
|
||||
console.log(` GET /api/v1/blocks/latest - 最新区块（真实高度）`);
|
||||
console.log(` GET /api/v1/blocks?limit=20&page=1 - 区块列表`);
|
||||
console.log(` GET /api/v1/blocks/:numberOrHash - 区块详情`);
|
||||
console.log(` GET /api/v1/transactions/latest?limit=20 - 最新交易`);
|
||||
console.log(` GET /api/v1/transactions/:hash - 交易详情`);
|
||||
console.log(` GET /api/v1/addresses/:address - 地址信息`);
|
||||
console.log(` GET /api/v1/addresses/:address/transactions - 地址交易历史`);
|
||||
console.log(` GET /api/v1/contracts/:address - 智能合约`);
|
||||
console.log(` GET /api/v1/assets?limit=20 - RWA 资产列表`);
|
||||
console.log(` GET /api/v1/assets/:id - RWA 资产详情`);
|
||||
console.log(` GET /api/v1/network/stats - 网络统计（真实数据）`);
|
||||
console.log(` GET /api/v1/search?q=xxx - 全局搜索`);
|
||||
});
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
{
|
||||
"compilerOptions": {
|
||||
"target": "ES2020",
|
||||
"module": "commonjs",
|
||||
"lib": ["ES2020"],
|
||||
"outDir": "./dist",
|
||||
"rootDir": "./src",
|
||||
"strict": true,
|
||||
"esModuleInterop": true,
|
||||
"skipLibCheck": true,
|
||||
"forceConsistentCasingInFileNames": true,
|
||||
"resolveJsonModule": true,
|
||||
"moduleResolution": "node"
|
||||
},
|
||||
"include": ["src/**/*"],
|
||||
"exclude": ["node_modules"]
|
||||
}
|
||||
Loading…
Reference in New Issue