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src/_VisualDVM/Passes/All/ArchivesBackupPass.java

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+package _VisualDVM.Passes.All;
+import Common.Utils.Utils_;
+import _VisualDVM.Global;
+import _VisualDVM.GlobalData.Machine.Machine;
+import _VisualDVM.GlobalData.RemoteFile.RemoteFile;
+import _VisualDVM.GlobalData.User.User;
+import _VisualDVM.Passes.SSH.ConnectionPass;
+import com.jcraft.jsch.ChannelSftp;
+
+import java.io.File;
+import java.nio.file.Paths;
+import java.util.Comparator;
+import java.util.Vector;
+public class ArchivesBackupPass extends ConnectionPass<File> {
+    File src;
+    @Override
+    protected boolean canStart(Object... args) throws Exception {
+        machine = (Machine) args[0];
+        user = (User) args[1];
+        src = (File) args[2];
+        return true;
+    }
+    @Override
+    protected void ServerAction() throws Exception {
+        String workspace_path = Utils_.toU(Paths.get(user.connection.sftpChannel.getHome(), Global.properties.BackupWorkspace).toString());
+        RemoteFile workspace = new RemoteFile(workspace_path, true);
+        user.connection.MKDIR(workspace);
+        RemoteFile dst = new RemoteFile(workspace.full_name, src.getName());
+        user.connection.putSingleFile(src, dst);
+        //-теперь, удалить старые файлы.
+        Vector<ChannelSftp.LsEntry> raw_files = user.connection.sftpChannel.ls(workspace.full_name);
+        Vector<RemoteFile> files = new Vector<>();
+        for (ChannelSftp.LsEntry file : raw_files) {
+            if (!file.getAttrs().isDir()) {
+                RemoteFile rfile = new RemoteFile(workspace.full_name, file.getFilename(), false);
+                rfile.updateTime = RemoteFile.convertUpdateTime(file.getAttrs().getMTime());
+                files.add(rfile);
+            }
+        }
+        //сортируем по времени обновления. по убыванию.
+        files.sort(new Comparator<RemoteFile>() {
+                    @Override
+                    public int compare(RemoteFile o1, RemoteFile o2) {
+                        return Long.compare(o1.updateTime, o2.updateTime);
+                    }
+                }.reversed()
+        );
+        for (int i = 2; i < files.size(); ++i) {
+            user.connection.sftpChannel.rm(files.get(i).full_name);
+        }
+        //--------------
+    }
+}