bourdon
23843493b8
主要改动： - 重构目录结构：合并子目录到根目录，简化项目结构 - 添加完整的查询 API：支持复杂条件查询、字段选择、游标模式 - 实现 LSM-Tree Compaction：7层结构、Score-based策略、后台异步合并 - 添加 Web UI：基于 Lit 的现代化管理界面，支持数据浏览和 Manifest 查看 - 完善文档：添加 README.md 和 examples/webui/README.md 新增功能： - Query Builder：链式查询 API，支持 Eq/Lt/Gt/In/Between/Contains 等操作符 - Web UI 组件：srdb-app、srdb-table-list、srdb-data-view、srdb-manifest-view 等 - 列选择持久化：自动保存到 localStorage - 刷新按钮：一键刷新当前视图 - 主题切换：深色/浅色主题支持 代码优化： - 使用 Go 1.24 新特性：range 7、min()、maps.Copy()、slices.Sort() - 统一组件命名：所有 Web Components 使用 srdb-* 前缀 - CSS 优化：提取共享样式，减少重复代码 - 清理遗留代码：删除未使用的方法和样式
302 lines
8.2 KiB
JavaScript
302 lines
8.2 KiB
JavaScript
import { LitElement, html, css } from 'https://cdn.jsdelivr.net/gh/lit/dist@3/core/lit-core.min.js';
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import { sharedStyles, cssVariables } from '../styles/shared-styles.js';
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export class ManifestView extends LitElement {
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static properties = {
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manifestData: { type: Object },
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loading: { type: Boolean },
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expandedLevels: { type: Set }
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};
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static styles = [
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sharedStyles,
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cssVariables,
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css`
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:host {
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display: block;
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}
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h3 {
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font-size: 16px;
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font-weight: 600;
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margin: 20px 0 12px 0;
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color: var(--text-primary);
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}
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.manifest-stats {
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
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gap: 16px;
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margin-bottom: 24px;
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}
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.stat-card {
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padding: 16px;
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background: var(--bg-elevated);
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border: 1px solid var(--border-color);
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border-radius: var(--radius-md);
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}
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.stat-label {
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font-size: 12px;
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color: var(--text-tertiary);
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margin-bottom: 8px;
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}
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.stat-value {
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font-size: 20px;
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font-weight: 600;
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color: var(--text-primary);
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}
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.level-card {
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margin-bottom: 12px;
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background: var(--bg-elevated);
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border: 1px solid var(--border-color);
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border-radius: var(--radius-md);
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overflow: hidden;
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}
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.level-header {
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display: flex;
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align-items: center;
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justify-content: space-between;
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padding: 16px;
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cursor: pointer;
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transition: var(--transition);
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}
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.level-header:hover {
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background: var(--bg-hover);
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}
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.level-header-left {
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display: flex;
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align-items: center;
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gap: 12px;
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flex: 1;
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}
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.expand-icon {
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font-size: 12px;
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color: var(--text-secondary);
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transition: transform 0.2s ease;
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user-select: none;
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}
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.expand-icon.expanded {
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transform: rotate(90deg);
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}
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.level-title {
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font-size: 16px;
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font-weight: 600;
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color: var(--text-primary);
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}
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.level-stats {
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display: flex;
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gap: 16px;
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font-size: 13px;
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color: var(--text-secondary);
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}
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.level-files {
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padding: 16px;
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background: var(--bg-surface);
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border-top: 1px solid var(--border-color);
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display: none;
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}
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.level-files.expanded {
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display: block;
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}
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.file-list {
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display: grid;
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grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
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gap: 12px;
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}
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.file-item {
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padding: 12px;
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background: var(--bg-elevated);
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border: 1px solid var(--border-color);
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border-radius: var(--radius-sm);
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transition: var(--transition);
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}
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.file-item:hover {
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border-color: var(--primary);
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
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}
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.file-name {
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font-family: 'Courier New', monospace;
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font-size: 13px;
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color: var(--text-primary);
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font-weight: 500;
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margin-bottom: 8px;
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}
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.file-detail {
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display: flex;
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flex-direction: column;
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gap: 4px;
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font-size: 12px;
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color: var(--text-secondary);
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}
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.file-detail-row {
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display: flex;
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justify-content: space-between;
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}
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@media (max-width: 768px) {
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.file-list {
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grid-template-columns: 1fr;
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}
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}
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.empty {
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background: var(--bg-elevated);
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border-radius: var(--radius-md);
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border: 1px dashed var(--border-color);
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margin-top: 24px;
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}
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.empty p {
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margin: 0;
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}
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`
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];
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constructor() {
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super();
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this.manifestData = null;
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this.loading = false;
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this.expandedLevels = new Set();
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}
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toggleLevel(levelNum) {
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if (this.expandedLevels.has(levelNum)) {
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this.expandedLevels.delete(levelNum);
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} else {
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this.expandedLevels.add(levelNum);
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}
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this.requestUpdate();
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}
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formatSize(bytes) {
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if (bytes >= 1024 * 1024 * 1024) return (bytes / (1024 * 1024 * 1024)).toFixed(2) + ' GB';
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if (bytes >= 1024 * 1024) return (bytes / (1024 * 1024)).toFixed(2) + ' MB';
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if (bytes >= 1024) return (bytes / 1024).toFixed(2) + ' KB';
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return bytes + ' B';
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}
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getScoreVariant(score) {
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if (score >= 0.8) return 'danger'; // 高分 = 需要紧急 compaction
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if (score >= 0.5) return 'warning'; // 中分 = 需要关注
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return 'success'; // 低分 = 健康状态
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}
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render() {
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if (this.loading || !this.manifestData) {
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return html`<div class="loading">Loading manifest...</div>`;
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}
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const totalFiles = this.manifestData.levels.reduce((sum, l) => sum + l.file_count, 0);
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const totalSize = this.manifestData.levels.reduce((sum, l) => sum + l.total_size, 0);
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const totalCompactions = this.manifestData.compaction_stats?.total_compactions || 0;
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return html`
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<h3>LSM-Tree Structure</h3>
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<div class="manifest-stats">
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<div class="stat-card">
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<div class="stat-label">Active Levels</div>
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<div class="stat-value">${this.manifestData.levels.filter(l => l.file_count > 0).length}</div>
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</div>
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<div class="stat-card">
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<div class="stat-label">Total Files</div>
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<div class="stat-value">${totalFiles}</div>
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</div>
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<div class="stat-card">
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<div class="stat-label">Total Size</div>
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<div class="stat-value">${this.formatSize(totalSize)}</div>
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</div>
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<div class="stat-card">
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<div class="stat-label">Compactions</div>
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<div class="stat-value">${totalCompactions}</div>
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</div>
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</div>
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${this.manifestData.levels && this.manifestData.levels.length > 0
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? this.manifestData.levels.map(level => this.renderLevelCard(level))
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: html`
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<div class="empty">
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<p>No SSTable files in this table yet.</p>
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<p style="font-size: 14px; margin-top: 8px;">Insert some data to see the LSM-Tree structure.</p>
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</div>
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`
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}
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`;
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}
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renderLevelCard(level) {
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if (level.file_count === 0) return '';
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const isExpanded = this.expandedLevels.has(level.level);
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return html`
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<div class="level-card">
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<div class="level-header" @click=${() => this.toggleLevel(level.level)}>
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<div class="level-header-left">
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<span class="expand-icon ${isExpanded ? 'expanded' : ''}">▶</span>
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<div>
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<div class="level-title">Level ${level.level}</div>
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<div class="level-stats">
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<span>${level.file_count} files</span>
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<span>${this.formatSize(level.total_size)}</span>
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${level.score !== undefined ? html`
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<srdb-badge variant="${this.getScoreVariant(level.score)}">
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Score: ${(level.score * 100).toFixed(0)}%
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</srdb-badge>
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` : ''}
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</div>
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</div>
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</div>
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</div>
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${level.files && level.files.length > 0 ? html`
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<div class="level-files ${isExpanded ? 'expanded' : ''}">
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<div class="file-list">
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${level.files.map(file => html`
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<div class="file-item">
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<div class="file-name">${file.file_number}.sst</div>
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<div class="file-detail">
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<div class="file-detail-row">
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<span>Size:</span>
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<span>${this.formatSize(file.file_size)}</span>
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</div>
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<div class="file-detail-row">
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<span>Rows:</span>
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<span>${file.row_count || 0}</span>
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</div>
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<div class="file-detail-row">
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<span>Seq Range:</span>
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<span>${file.min_key} - ${file.max_key}</span>
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</div>
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</div>
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</div>
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`)}
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</div>
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</div>
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` : ''}
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</div>
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`;
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}
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}
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customElements.define('srdb-manifest-view', ManifestView);
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