新增获取磁盘主机的信息

src/main/java/com/mini/capi/utils/HostInfo.java

@@ -0,0 +1,126 @@
+package com.mini.capi.utils;
+
+
+import com.jcraft.jsch.*;
+import com.mini.capi.biz.domain.DiskMount;
+import com.mini.capi.biz.domain.SysHost;
+
+import java.io.*;
+import java.math.BigDecimal;
+import java.util.*;
+
+public final class HostInfo {
+
+
+    private static final String HOST_TAG = "c-api";
+
+    public static final class Result {
+        public final SysHost host;
+        public final List<DiskMount> disks;
+
+        Result(SysHost h, List<DiskMount> d) {
+            this.host = h;
+            this.disks = d;
+        }
+    }
+
+    /* ========== 主入口 ========== */
+    public static Result collect(String hostIp, int port, String username, String password) throws Exception {
+
+        Session session = null;
+        try {
+            session = createSession(hostIp, port, username, password);
+            SysHost host = collectHost(session);
+            List<DiskMount> disks = collectDisk(session);
+            disks.forEach(d -> d.setSysHostId(host.getSysHostId()));
+            return new Result(host, disks);
+        } finally {
+            if (session != null && session.isConnected()) {
+                session.disconnect();
+            }
+        }
+    }
+
+    /* ========== SSH 工具 ========== */
+    private static Session createSession(String ip, int port, String user, String pwd) throws JSchException {
+        JSch jsch = new JSch();
+        Session session = jsch.getSession(user, ip, port);
+        session.setPassword(pwd);
+        session.setConfig("StrictHostKeyChecking", "no");
+        session.connect(10_000);
+        return session;
+    }
+
+    private static String exec(Session session, String cmd) throws Exception {
+        ChannelExec ch = (ChannelExec) session.openChannel("exec");
+        ch.setCommand(cmd);
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        ByteArrayOutputStream err = new ByteArrayOutputStream();
+        ch.setOutputStream(out);
+        ch.setErrStream(err);
+        ch.connect();
+        waitForExit(ch);
+        ch.disconnect();
+        String errStr = err.toString().trim();
+        if (!errStr.isEmpty()) {
+            throw new RuntimeException("Remote cmd error: " + errStr);
+        }
+        return out.toString().trim();
+    }
+
+    private static void waitForExit(ChannelExec ch) throws Exception {
+        long start = System.currentTimeMillis();
+        while (!ch.isClosed()) {
+            if (System.currentTimeMillis() - start > 30_000) {
+                throw new RuntimeException("Command timeout");
+            }
+        }
+    }
+
+    /* ========== 采集主机信息 ========== */
+    private static SysHost collectHost(Session session) throws Exception {
+        SysHost host = new SysHost();
+        String id = vId.getUid();
+        host.setSysHostId(id);
+        host.setHostTag(HOST_TAG);
+        host.setHostname(exec(session, "hostname -s"));
+        host.setCpuArch(exec(session, "uname -m"));
+        // CPU 型号：取 model name 第一行
+        String cpuInfo = exec(session, "cat /proc/cpuinfo | grep 'model name' | head -1");
+        host.setCpuModel(cpuInfo.contains(":") ? cpuInfo.split(":", 2)[1].trim() : null);
+        // 核心数
+        String cores = exec(session, "nproc --all");
+        host.setCpuCores(parseInt(cores));
+        // CPU 使用率：top -bn1 取 idle 字段
+        String top = exec(session, "top -bn1 | grep 'Cpu(s)'");
+        host.setCpuUsage(top);
+        return host;
+    }
+
+    /* ========== 采集磁盘信息 ========== */
+    private static List<DiskMount> collectDisk(Session session) throws Exception {
+        String df = exec(session, "df -k -P | tail -n +2"); // 去掉标题行
+        List<DiskMount> list = new ArrayList<>();
+        for (String line : df.split("\n")) {
+            String[] arr = line.trim().split("\\s+");
+            if (arr.length < 6) continue; // 跳过异常行
+            DiskMount d = new DiskMount();
+            d.setDiskFs(arr[0]);
+            d.setSizeKb(new BigDecimal(arr[1]));
+            d.setUsedKb(new BigDecimal(arr[2]));
+            d.setAvailKb(new BigDecimal(arr[3]));
+            d.setMountPoint(arr[5]);
+            list.add(d);
+        }
+        return list;
+    }
+
+    /* ========== 工具方法 ========== */
+    private static Integer parseInt(String s) {
+        try {
+            return Integer.parseInt(s.trim());
+        } catch (Exception e) {
+            return null;
+        }
+    }
+}

src/main/java/com/mini/capi/utils/docker.java

@@ -54,7 +54,6 @@ public class docker {
             ChannelExec channel = (ChannelExec) session.openChannel("exec");
             channel.setCommand(command);
             channel.setInputStream(null);
-
             InputStream in = channel.getInputStream();
             BufferedReader reader = new BufferedReader(new InputStreamReader(in));
 

src/main/java/com/mini/capi/utils/vId.java

@@ -0,0 +1,27 @@
+package com.mini.capi.utils;
+
+import java.security.SecureRandom;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class vId {
+
+    private static final SecureRandom RAND = new SecureRandom();
+    private static final DateTimeFormatter DF = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS");
+
+    private vId() {}
+
+
+    /**
+     *
+     * 时间戳唯一编号
+     */
+    public static String getUid() {
+        // 17 位时间
+        String tm = LocalDateTime.now().format(DF);
+        // 25 位随机数字（高位补零）
+        long rand = Math.abs(RAND.nextLong()) % (long) Math.pow(10, 15);
+        return tm + String.format("%015d", rand);
+    }
+
+}