backupper

README

Backupper App

Welcome to Backupper! The app for making backup easy and fast!

• Features
• Basic usage
• Backup mode
• View logs mode
• Testing
• Docker
• Watchers

Features

• Create backup of files in the "hot" directory
• Select watcher of changes based on your expectations
• Copy is made by chunks, so large files are supported
• All non-regular files are ignored (e.g. dirs, device files)
• Files in backup dir supposed to be maintained only by app (DO NOT CHANGE BACKUP DIR FILES POLICY =))
• Create file with name delete_<filename> and <filename> will be removed in hot and backup dirs
• Create file with name delete_<RFC3339>_<filename> and <filename> will be removed in hot and backup dirs at <RFC3339>

example of delete_<RFC3339>_<filename>: delete_2023-09-23T18:54:30+02:00_file_2

Basic usage

# for build
> make

# for run
> ./main

# for usage help
> ./main -h

Backup mode

> ./main -backup-path ./backup -hot-path ./hot -log log.txt -log-level 0 -watcher syscall

• -backup-path <path_to_backup_dir>
• -hot-path <path_to_origins_dir>
• -log <path_to_log_file> - already existing log file will be appended
• -log-level <number> - 0 for Debug, 3 for Error
• -watcher <type_of_watcher>

You could use default args if you want just to test it

View logs mode

> ./main -view -view-date-filter "2023/09/25" -view-regex ".*CopyWorker.*"

• -view - switch to log viewing mode
• -view-date-filter <date_to_search_for> - format of the date should be same as in logs (2009/01/23)
• --view-regex <some_regex>

Testing

# create example files to trigger them backup
> make create_files

# compare files in ./hot and ./backup dirs
> make compare_files

# create scheduled deletion of file_1
> make create_scheduled

# run Go UT and run simple end-to-end test
> make test

Bash scripts from ./scripts used:

• createFiles.sh - creates given amount of files in given dir with names file_<number>
• compareFiles.sh - compares files in given dirs
• scheduleDelete.sh - creates file delete_ISODATETIME_ for given file and sets date in filename for now + 5 sec
• test.sh - run all binary and already mentioned scripts

Docker

If you don't have Linux, but you want to try this awesome app, try our simple Dockerfile!

# to build image
> make docker
# to run container and share current dir with container
> make docker-run

Do not forget that Docker could create ./hot and ./backup dirs under root!

Watchers

Watcher	Description
syscal	Watcher that uses syscall with non-blocking IO. Fast, with small "loss window" (100ms), but could consume resources by triggering a lot of events
event	Watcher that uses github.com/fsnotify/fsnotify. Same syscall under the hood, produces more events than syscall, but more reliable
timer	Watcher that runs by ticker, uses much less resources, but has "loss window" (triggered once per sec)