migra/migra/src/fs.rs

35 lines
1.0 KiB
Rust

use crate::errors::MigraResult;
use crate::migration;
use std::io;
use std::path::Path;
/// Checks if the directory is a migration according to the principles of the crate.
#[must_use]
pub fn is_migration_dir(path: &Path) -> bool {
path.join("up.sql").exists() && path.join("down.sql").exists()
}
/// Get all migration directories from path and returns as [List].
///
/// This utility checks if the directory is a migration. See [`is_migration_dir`] for
/// more information.
///
/// [List]: migration::List
/// [is_migration_dir]: fs::is_migration_dir
pub fn get_all_migrations(dir_path: &Path) -> MigraResult<migration::List> {
let mut entries = match dir_path.read_dir() {
Err(e) if e.kind() == io::ErrorKind::NotFound => vec![],
entries => entries?
.filter_map(|res| res.ok().map(|e| e.path()))
.filter(|path| is_migration_dir(&path))
.collect::<Vec<_>>(),
};
if entries.is_empty() {
return Ok(migration::List::new());
}
entries.sort();
Ok(migration::List::from(entries))
}