internal/component => internal/dis/component

internal/component/backup.go

@@ -1,171 +0,0 @@
-package component
-
-import (
-	"io"
-	"path/filepath"
-
-	"github.com/FAU-CDI/wisski-distillery/internal/models"
-	"github.com/FAU-CDI/wisski-distillery/pkg/environment"
-	"github.com/FAU-CDI/wisski-distillery/pkg/fsx"
-	"github.com/pkg/errors"
-	"github.com/tkw1536/goprogram/stream"
-)
-
-// Backupable represents a component with a Backup method
-type Backupable interface {
-	Component
-
-	// BackupName returns a new name to be used as an argument for path.
-	BackupName() string
-
-	// Backup backs up this component into the destination path path
-	Backup(context StagingContext) error
-}
-
-// Snapshotable represents a component with a Snapshot method.
-type Snapshotable interface {
-	Component
-
-	// SnapshotNeedsRunning returns if this Snapshotable requires a running instance.
-	SnapshotNeedsRunning() bool
-
-	// SnapshotName returns a new name to be used as an argument for path.
-	SnapshotName() string
-
-	// Snapshot snapshots a part of the instance
-	Snapshot(wisski models.Instance, context StagingContext) error
-}
-
-// StagingContext represents a context for [Backupable] and [Snapshotable]
-type StagingContext interface {
-	// IO returns the input output stream belonging to this backup file
-	IO() stream.IOStream
-
-	// Name creates a new directory inside the destination.
-	// Passing the empty path creates the destination as a directory.
-	//
-	// It then allows op to fill the file.
-	AddDirectory(path string, op func() error) error
-
-	// CopyFile copies a file from src to dst.
-	CopyFile(dst, src string) error
-
-	// CopyDirectory copies a directory from src to dst.
-	CopyDirectory(dst, src string) error
-
-	// AddFile creates a new file at the provided path inside the destination.
-	// Passing the empty path creates the destination as a file.
-	//
-	// It then allows op to write to the file.
-	//
-	// The op function must not retain file.
-	// The underlying file does not need to be closed.
-	// AddFile will not return before op has returned.
-	AddFile(path string, op func(file io.Writer) error) error
-}
-
-// NewStagingContext returns a new [StagingContext]
-func NewStagingContext(env environment.Environment, io stream.IOStream, path string, manifest chan<- string) StagingContext {
-	return &stagingContext{
-		env:      env,
-		io:       io,
-		path:     path,
-		manifest: manifest,
-	}
-}
-
-// stagingContext implements [components.StagingContext]
-type stagingContext struct {
-	env      environment.Environment // environment
-	io       stream.IOStream         // context the files are sent to
-	path     string                  // path to send files to
-	manifest chan<- string           // channel the manifest is sent to
-}
-
-func (bc *stagingContext) sendPath(path string) {
-	// resolve the path, or bail out!
-	// TODO: Use the relative path here!
-	dst, err := bc.resolve(path)
-	if err != nil {
-		return
-	}
-
-	bc.io.Println(dst)
-	bc.manifest <- dst
-}
-
-func (bc *stagingContext) IO() stream.IOStream {
-	return bc.io
-}
-
-var errResolveAbsolute = errors.New("resolve: path must be relative")
-
-func (bc *stagingContext) resolve(path string) (dest string, err error) {
-	if path == "" {
-		return bc.path, nil
-	}
-	if filepath.IsAbs(path) {
-		return "", errResolveAbsolute
-	}
-	return filepath.Join(bc.path, path), nil
-}
-
-func (sc *stagingContext) AddDirectory(path string, op func() error) error {
-	// resolve the path!
-	dst, err := sc.resolve(path)
-	if err != nil {
-		return err
-	}
-
-	// run the make directory
-	if err := sc.env.Mkdir(dst, environment.DefaultDirPerm); err != nil {
-		return err
-	}
-
-	// tell the files that we are creating it!
-	sc.sendPath(path)
-
-	// and run the files!
-	return op()
-}
-
-func (sc *stagingContext) CopyFile(dst, src string) error {
-	dstPath, err := sc.resolve(dst)
-	if err != nil {
-		return err
-	}
-	sc.sendPath(dst)
-	return fsx.CopyFile(sc.env, dstPath, src)
-}
-
-func (sc *stagingContext) CopyDirectory(dst, src string) error {
-	dstPath, err := sc.resolve(dst)
-	if err != nil {
-		return err
-	}
-
-	return fsx.CopyDirectory(sc.env, dstPath, src, func(dst, src string) {
-		sc.sendPath(dst)
-	})
-}
-
-func (sc *stagingContext) AddFile(path string, op func(file io.Writer) error) error {
-	// resolve the path!
-	dst, err := sc.resolve(path)
-	if err != nil {
-		return err
-	}
-
-	// create the file
-	file, err := sc.env.Create(dst, environment.DefaultFilePerm)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-
-	// tell them that we are creating it!
-	sc.sendPath(path)
-
-	// and do whatever they wanted to do
-	return op(file)
-}