Java监控目录所在磁盘的存储使用情况超出阔值告警

小灰灰 2022-10-08 12:26 157阅读 0赞

### 文章目录 ###

*  功能描述
 *  获取结果的模型类
 *  工具类
 *  测试类

# 功能描述 #

获取应用资源目录所在的文件系统的使用情况,并对硬盘使用率超出某个阔值做警告信息

# 获取结果的模型类 #

public class WorkspaceHarDiskInfo { 
        public WorkspaceHarDiskInfo(String filesystem, String size, String used, String use) { 
            this.filesystem = filesystem;
            this.size = size;
            this.used = used;
            this.use = use;
        }
        /** * 所属的文件系统 */
        private String filesystem;
        /** * 硬盘大小 */
        private String size;
        /** * 已使用的大小 */
        private String used;
        /** * 使用率 */
        private String use;

# 工具类 #

public class ShellUtils { 
    
        private ShellUtils() {  }
    
        /** * 获取shell执行脚本 */
        public static List<String> runShell(String command) { 
            try { 
                //容器
                List<String> list = new ArrayList();
                Process process;
                process = Runtime.getRuntime().exec(new String[]{ "/bin/sh", "-c", command}, null, null);
                InputStreamReader ir = new InputStreamReader(process
                        .getInputStream());
                LineNumberReader input = new LineNumberReader(ir);
                String line;
                process.waitFor();
                System.out.println("********************linux 执行shell 开始*****************************");
                int rowIndex = 0;
                while ((line = input.readLine()) != null) { 
                    System.out.println(line);
                    if (rowIndex > 0) { 
                        //把连续的空格转成1个空格
                        line = line.replaceAll(" + ", " ");
                        list.add(line);
                    }
                    rowIndex++;
                }
                System.out.println("********************linux 执行shell 结束*****************************");
                return list;
            } catch (Exception e) { 
                System.err.println("runShell ,error={" + e + "}");
            }
            return Collections.EMPTY_LIST;
        }
    
        /** * 获取目录所在磁盘的信息 */
        public static WorkspaceHarDiskInfo getWorkspaceHarDiskInfo(String savePath) { 
              if (System.getProperty("os.name").toLowerCase().contains("linux")) { 
                String command = String.format("df -h %s", savePath);
                List<String> list = runShell(command);
                if (list == Collections.EMPTY_LIST) { 
                    System.err.println(String.format("runShell command=%s result is null", command));
                    return null;
                }
                String array[] = list.get(0).split(" ");
                // Filesystem Size Used Avail Use% Mounted on
                // dev/mapper/centos-root 453G 176G 255G 41% /
                return new WorkspaceHarDiskInfo(array[0], array[1], array[2], array[4]);
            } else { 
                String firstChar = savePath.substring(0, 1).toUpperCase();
                //总空间
                long size = 0;
                //可用空间
                long free = 0;
                firstChar += ":/";
                File win = new File(firstChar);
                if (win.exists()) { 
                    size = win.getTotalSpace();
                    free = win.getFreeSpace();
                }
                String usedStr = String.format("%.2fG", (size - free) * 1.00 / 1024 / 1024 / 1024);
                String sizeStr = String.format("%.2fG", (size * 1.00 / 1024 / 1024 / 1024));
                return new WorkspaceHarDiskInfo(firstChar, sizeStr, usedStr, (int) ((1 - free * 1.0 / size) * 100) + "%");
            }
        }
     }

# 测试类 #

public static void main(String[] args) { 
            String savePath="/home/test";
            //String savePath="d:/data";
            //设置硬盘使用率超过多少发送邮件通知
            Integer threshold=40; //根据需求设置阔值
            WorkspaceHarDiskInfo workspaceHarDiskInfo=getWorkspaceHarDiskInfo(savePath);
            if(workspaceHarDiskInfo==null){ 
                System.err.println(String.format("未获取 {} 相关的磁盘信息",savePath));
                return;
            }
            System.out.println(String.format("目录所属文件系统: %s ,硬盘使用详情: %s/%s ,使用率达到：%s",workspaceHarDiskInfo.getFilesystem(),workspaceHarDiskInfo.getUsed(),workspaceHarDiskInfo.getSize(),workspaceHarDiskInfo.getUse()));
            if(Integer.parseInt(workspaceHarDiskInfo.getUse().substring(0,workspaceHarDiskInfo.getUse().length()-1))>threshold){ 
                System.err.println("已超过警戒线"+threshold+"%,请及时处理，避免服务因存储不足导致异常的情况");
                //正常情况下需要发送邮件通知运维人员,发邮件的代码逻辑请自行补充
            }else{ 
                System.out.println("硬盘资源充足");
            }
        }

测试结果如下  
linux系统测试结果  
![在这里插入图片描述][20210621164239992.png]  
window系统测试结果  
![在这里插入图片描述][20210621183451592.png]

[20210621164239992.png]: /images/20221005/07bbae091b604b09bc2b448663c6eaa0.png
[20210621183451592.png]: /images/20221005/ce4efebc083f44cdbb8b8abcd828aaa5.png