使用率表示

import org.springframework.boot.actuate.system.DiskSpaceHealthIndicator;
import org.springframework.boot.actuate.system.DiskSpaceHealthIndicatorProperties;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class DiskUsageController {

    private final DiskSpaceHealthIndicator diskSpaceHealthIndicator;
    private final DiskSpaceHealthIndicatorProperties properties;

    public DiskUsageController(DiskSpaceHealthIndicator diskSpaceHealthIndicator,
                               DiskSpaceHealthIndicatorProperties properties) {
        this.diskSpaceHealthIndicator = diskSpaceHealthIndicator;
        this.properties = properties;
    }

    @GetMapping("/disk-usage")
    public DiskUsage getDiskUsage() {
        DiskSpaceHealthIndicator.DiskSpaceHealthDetails details =
                diskSpaceHealthIndicator.health().getDetails();
        long total = details.getTotal();
        long free = details.getFree();
        long threshold = properties.getThreshold().getBytes();
        long used = total - free;

        return new DiskUsage(total, used, free, threshold);
    }

    public static class DiskUsage {
        private final long total;
        private final long used;
        private final long free;
        private final long threshold;

        public DiskUsage(long total, long used, long free, long threshold) {
            this.total = total;
            this.used = used;
            this.free = free;
            this.threshold = threshold;
        }

        // Getter methods
    }
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class DiskUsage {
    public static void main(String[] args) {
        List<DiskUsageInfo> diskUsageList = getFilteredDiskUsage("/data"); // マウントポイントを指定
        for (DiskUsageInfo diskUsage : diskUsageList) {
            System.out.println("Total: " + diskUsage.getTotalBlocks() + " blocks");
            System.out.println("Used: " + diskUsage.getUsedBlocks() + " blocks");
            System.out.println("Available: " + diskUsage.getAvailableBlocks() + " blocks");
            System.out.println("Usage Percentage: " + diskUsage.getUsagePercentage() + "%");
            System.out.println();
        }
    }

    public static List<DiskUsageInfo> getFilteredDiskUsage(String mountPoint) {
        List<DiskUsageInfo> diskUsageList = new ArrayList<>();
        try {
            Process process = new ProcessBuilder("df").start();
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                if (!line.isEmpty()) {
                    DiskUsageInfo diskUsage = parseDiskUsageLine(line);
                    if (diskUsage != null && line.contains(mountPoint)) { // マウントポイントのフィルタリング
                        diskUsageList.add(diskUsage);
                    }
                }
            }
            process.waitFor();
            reader.close();
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
        return diskUsageList;
    }

    private static DiskUsageInfo parseDiskUsageLine(String line) {
        // 正規表現を使用して行から必要な情報を抽出
        Pattern pattern = Pattern.compile("\\S+\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)%.*");
        Matcher matcher = pattern.matcher(line);
        if (matcher.matches()) {
            long totalBlocks = Long.parseLong(matcher.group(1));
            long usedBlocks = Long.parseLong(matcher.group(2));
            long availableBlocks = Long.parseLong(matcher.group(3));
            int usagePercentage = Integer.parseInt(matcher.group(4));
            return new DiskUsageInfo(totalBlocks, usedBlocks, availableBlocks, usagePercentage);
        }
        return null;
    }

    public static class DiskUsageInfo {
        private final long totalBlocks;
        private final long usedBlocks;
        private final long availableBlocks;
        private final int usagePercentage;

        public DiskUsageInfo(long totalBlocks, long usedBlocks, long availableBlocks, int usagePercentage) {
            this.totalBlocks = totalBlocks;
            this.usedBlocks = usedBlocks;
            this.availableBlocks = availableBlocks;
            this.usagePercentage = usagePercentage;
        }

        public long getTotalBlocks() {
            return totalBlocks;
        }

        public long getUsedBlocks() {
            return usedBlocks;
        }

        public long getAvailableBlocks() {
            return availableBlocks;
        }

        public int getUsagePercentage() {
            return usagePercentage;
        }
    }
}


~~~