新增 glance 进程监控命令：采集 cpu/内存/句柄数并生成报告

kit/src/glance/store.js

@@ -0,0 +1,68 @@
+/**
+ * glance 数据存储：默认 sqlite 位于 ~/.kit/glance.db（不存在则创建）
+ * 依赖 bun:sqlite，仅在调用时加载，避免影响 node 环境下的其他命令。
+ */
+const fs = require("fs");
+const os = require("os");
+const path = require("path");
+
+function defaultDbPath() {
+    return path.join(os.homedir(), ".kit", "glance.db");
+}
+
+function open(dbPath) {
+    dbPath = dbPath || defaultDbPath();
+    fs.mkdirSync(path.dirname(dbPath), { recursive: true });
+
+    const { Database } = require("bun:sqlite");
+    const db = new Database(dbPath);
+    db.exec(`CREATE TABLE IF NOT EXISTS glance (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        ts INTEGER NOT NULL,
+        target TEXT NOT NULL,
+        pid INTEGER,
+        port INTEGER,
+        cpu REAL,
+        mem REAL,
+        handle INTEGER
+    )`);
+    db.exec("CREATE INDEX IF NOT EXISTS idx_glance_lookup ON glance(pid, port, ts)");
+    return db;
+}
+
+/**
+ * 插入一条监控记录
+ * @param db database
+ * @param record {ts, target, pid, port, cpu, mem, handle}
+ */
+function insert(db, record) {
+    db.query("INSERT INTO glance (ts, target, pid, port, cpu, mem, handle) VALUES (?, ?, ?, ?, ?, ?, ?)")
+        .run(record.ts, record.target, record.pid ?? null, record.port ?? null, record.cpu ?? null, record.mem ?? null, record.handle ?? null);
+}
+
+/**
+ * 按时间范围查询监控数据（忽略 target，pid/port 二者取其一）
+ * @param db database
+ * @param opts {pid?, port?, start, end}
+ * @returns rows
+ */
+function queryRange(db, opts) {
+    let where;
+    const params = [];
+    if (opts.pid != null) {
+        where = "pid = ?";
+        params.push(opts.pid);
+    } else {
+        where = "port = ?";
+        params.push(opts.port);
+    }
+    params.push(opts.start, opts.end);
+    return db.query(`SELECT ts, target, pid, port, cpu, mem, handle FROM glance WHERE ${where} AND ts >= ? AND ts < ? ORDER BY ts ASC`).all(...params);
+}
+
+module.exports = {
+    defaultDbPath,
+    open,
+    insert,
+    queryRange
+};