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Allow for the exclusion of files from backups (#100)

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* Hoist walking of files so it can be used for features other than archive creation

* Add option to ignore files from backup using glob patterns

* Use Regexp instead of glob for exclusion

* Ignore artifacts

* Add teardown to test

* Allow single Re for filtering only

* Add documentation

* Use MatchString on re, add bad input to message in case of error
This commit is contained in:
Frederik Ring
2022-05-08 11:20:38 +02:00
committed by GitHub
parent cac5777e79
commit b52b271bac
9 changed files with 96 additions and 14 deletions
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15
cmd/backup/archive.go
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@@ -11,14 +11,13 @@ import (
"compress/gzip"
"fmt"
"io"
"io/fs"
"os"
"path"
"path/filepath"
"strings"
)
func createArchive(inputFilePath, outputFilePath string) error {
func createArchive(files []string, inputFilePath, outputFilePath string) error {
inputFilePath = stripTrailingSlashes(inputFilePath)
inputFilePath, outputFilePath, err := makeAbsolute(inputFilePath, outputFilePath)
if err != nil {
@@ -28,7 +27,7 @@ func createArchive(inputFilePath, outputFilePath string) error {
return fmt.Errorf("createArchive: error creating output file path: %w", err)
}
if err := compress(inputFilePath, outputFilePath, filepath.Dir(inputFilePath)); err != nil {
if err := compress(files, outputFilePath, filepath.Dir(inputFilePath)); err != nil {
return fmt.Errorf("createArchive: error creating archive: %w", err)
}
@@ -52,7 +51,7 @@ func makeAbsolute(inputFilePath, outputFilePath string) (string, string, error)
return inputFilePath, outputFilePath, err
}
func compress(inPath, outFilePath, subPath string) error {
func compress(paths []string, outFilePath, subPath string) error {
file, err := os.Create(outFilePath)
if err != nil {
return fmt.Errorf("compress: error creating out file: %w", err)
@@ -62,14 +61,6 @@ func compress(inPath, outFilePath, subPath string) error {
gzipWriter := gzip.NewWriter(file)
tarWriter := tar.NewWriter(gzipWriter)
var paths []string
if err := filepath.WalkDir(inPath, func(path string, di fs.DirEntry, err error) error {
paths = append(paths, path)
return err
}); err != nil {
return fmt.Errorf("compress: error walking filesystem tree: %w", err)
}
for _, p := range paths {
if err := writeTarGz(p, tarWriter, prefix); err != nil {
return fmt.Errorf("compress error writing %s to archive: %w", p, err)