FsCommands.java

spring-boot/src/main/java/com/tutego/ch_02/springShell/FsCommands.java

package com.tutego.ch_02.springShell;

import com.tutego.ch_02.classpathScanning.FileSystem;
import org.springframework.shell.standard.ShellComponent;
import org.springframework.shell.standard.ShellMethod;
import org.springframework.util.unit.DataSize;

@ShellComponent
public class FsCommands {

    private final FileSystem fs = new FileSystem();

    @ShellMethod("Display required free disk space")
    public long minimumFreeDiskSpace() {
        return 1_000_000;
    }

    @ShellMethod("Convert to lowercase string")
    public String toLowercase(String s) {
        return s.toLowerCase();
    }

    @ShellMethod("Display free disk space")
    public String freeDiskSpace() {
        return DataSize.ofBytes(fs.getFreeDiskSpace()).toGigabytes() + " GB";
    }

}