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#[cfg(any(feature = "tokio", feature = "gio"))]
pub fn key_to_path(key: &samod_core::StorageKey) -> std::path::PathBuf {
let mut result = std::path::PathBuf::new();
for (index, component) in key.into_iter().enumerate() {
// splay the first key out by the first two characters
if index == 0 {
let first_two = component.chars().take(2).collect::<String>();
let remaining = component.chars().skip(2).collect::<String>();
result.push(first_two);
result.push(remaining);
} else {
result.push(component);
}
}
result
}
#[cfg(feature = "tokio")]
pub mod tokio {
use std::{
collections::HashMap,
path::{Path, PathBuf},
};
use crate::storage::Storage;
use super::key_to_path;
/// An implementation of [`Storage`] which stores data in the file system and uses the tokio event loop for dispatch
///
/// This implementation is compatible with the format the automerge-repo-storage-nodefs package uses
#[derive(Clone, Debug)]
pub struct FilesystemStorage {
data_dir: PathBuf,
}
impl FilesystemStorage {
pub fn new<P: AsRef<Path>>(data_dir: P) -> Self {
Self {
data_dir: data_dir.as_ref().to_path_buf(),
}
}
fn key_to_path(&self, key: &samod_core::StorageKey) -> PathBuf {
let mut path = self.data_dir.clone();
path.push(key_to_path(key));
path
}
}
impl Storage for FilesystemStorage {
fn load(
&self,
key: samod_core::StorageKey,
) -> impl Future<Output = Option<Vec<u8>>> + Send {
let path = self.key_to_path(&key);
async move {
let meta = tokio::fs::metadata(&path).await.ok()?;
if !meta.is_file() {
return None;
}
let result = tokio::fs::read(path).await.unwrap();
Some(result)
}
}
fn load_range(
&self,
prefix: samod_core::StorageKey,
) -> impl Future<Output = std::collections::HashMap<samod_core::StorageKey, Vec<u8>>> + Send
{
let path = self.key_to_path(&prefix);
async move {
let Some(meta) = tokio::fs::metadata(&path).await.ok() else {
return HashMap::new(); // Return empty map if path does not exist
};
if !meta.is_dir() {
return HashMap::new();
}
let mut result = HashMap::new();
// Now walk the directory, recursively
let mut to_visit = vec![(path, prefix)];
while let Some((next_path, key_prefix)) = to_visit.pop() {
let mut entries = tokio::fs::read_dir(&next_path).await.unwrap();
while let Some(entry) = entries.next_entry().await.unwrap() {
let Some(filename) = entry.file_name().to_str().map(|s| s.to_string())
else {
continue; // Skip entries with non-UTF8 names
};
let entry_path = entry.path();
let Some(entry_meta) = tokio::fs::metadata(&entry_path).await.ok() else {
continue;
};
let Ok(next_key_prefix) = key_prefix.with_component(filename) else {
continue;
};
if entry_meta.is_dir() {
to_visit.push((entry_path, next_key_prefix));
} else if entry_path.is_file() {
let data = tokio::fs::read(&entry_path).await.unwrap();
result.insert(next_key_prefix, data);
}
}
}
result
}
}
fn put(
&self,
key: samod_core::StorageKey,
data: Vec<u8>,
) -> impl Future<Output = ()> + Send {
let path = self.key_to_path(&key);
async move {
let parent = path.parent().unwrap();
tokio::fs::create_dir_all(parent).await.unwrap();
tokio::fs::write(path, data).await.unwrap();
}
}
fn delete(&self, key: samod_core::StorageKey) -> impl Future<Output = ()> + Send {
let path = self.key_to_path(&key);
async move {
tokio::fs::remove_file(path).await.unwrap();
}
}
}
}
#[cfg(feature = "gio")]
pub mod gio {
use std::{
collections::HashMap,
path::{Path, PathBuf},
};
use crate::storage::Storage;
use gio::prelude::*;
use super::key_to_path;
/// An implementation of [`Storage`] which stores data in the file system and uses the gio event loop for dispatch
///
/// This implementation is compatible with the format the automerge-repo-storage-nodefs package uses
#[derive(Clone, Debug)]
pub struct FilesystemStorage {
data_dir: PathBuf,
}
impl FilesystemStorage {
pub fn new<P: AsRef<Path>>(data_dir: P) -> Self {
Self {
data_dir: data_dir.as_ref().to_path_buf(),
}
}
fn key_to_path(&self, key: &samod_core::StorageKey) -> PathBuf {
let mut path = self.data_dir.clone();
path.push(key_to_path(key));
path
}
}
impl Storage for FilesystemStorage {
fn load(
&self,
key: samod_core::StorageKey,
) -> impl std::future::Future<Output = Option<Vec<u8>>> + Send {
let path = self.key_to_path(&key);
async move {
let (tx, rx) = futures::channel::oneshot::channel();
std::thread::spawn(move || {
let file = gio::File::for_path(&path);
// Check if file exists and is a regular file
let result = (|| {
let file_info = file
.query_info("*", gio::FileQueryInfoFlags::NONE, gio::Cancellable::NONE)
.ok()?;
if file_info.file_type() != gio::FileType::Regular {
return None;
}
// Read the file contents
let (contents, _) = file.load_contents(gio::Cancellable::NONE).ok()?;
Some(contents.to_vec())
})();
let _ = tx.send(result);
});
rx.await.unwrap_or(None)
}
}
fn load_range(
&self,
prefix: samod_core::StorageKey,
) -> impl std::future::Future<Output = HashMap<samod_core::StorageKey, Vec<u8>>> + Send
{
let path = self.key_to_path(&prefix);
async move {
let (tx, rx) = futures::channel::oneshot::channel();
std::thread::spawn(move || {
let mut result = HashMap::new();
let dir = gio::File::for_path(&path);
// Check if directory exists
let dir_info = match dir.query_info(
"*",
gio::FileQueryInfoFlags::NONE,
gio::Cancellable::NONE,
) {
Ok(info) => info,
Err(_) => {
let _ = tx.send(result);
return;
}
};
if dir_info.file_type() != gio::FileType::Directory {
let _ = tx.send(result);
return;
}
// Recursively walk the directory
let mut to_visit = vec![(dir, prefix)];
while let Some((current_dir, key_prefix)) = to_visit.pop() {
let enumerator = match current_dir.enumerate_children(
"*",
gio::FileQueryInfoFlags::NONE,
gio::Cancellable::NONE,
) {
Ok(enumerator) => enumerator,
Err(_) => continue,
};
while let Some(file_info) =
enumerator.next_file(gio::Cancellable::NONE).unwrap_or(None)
{
let filename = file_info.name();
let Some(filename_str) = filename.to_str() else {
continue;
};
let child = current_dir.child(&filename);
let Ok(next_key_prefix) =
key_prefix.with_component(filename_str.to_string())
else {
continue;
};
match file_info.file_type() {
gio::FileType::Directory => {
to_visit.push((child, next_key_prefix));
}
gio::FileType::Regular => {
if let Ok((contents, _)) =
child.load_contents(gio::Cancellable::NONE)
{
result.insert(next_key_prefix, contents.to_vec());
}
}
_ => {}
}
}
}
let _ = tx.send(result);
});
rx.await.unwrap_or_else(|_| HashMap::new())
}
}
fn put(
&self,
key: samod_core::StorageKey,
data: Vec<u8>,
) -> impl std::future::Future<Output = ()> + Send {
let path = self.key_to_path(&key);
async move {
let (tx, rx) = futures::channel::oneshot::channel();
std::thread::spawn(move || {
let file = gio::File::for_path(&path);
// Create parent directories if they don't exist
if let Some(parent) = file.parent() {
let _ = parent.make_directory_with_parents(gio::Cancellable::NONE);
}
// Write the file
let bytes = glib::Bytes::from(&data);
let _ = file.replace_contents(
&bytes,
None,
false,
gio::FileCreateFlags::REPLACE_DESTINATION,
gio::Cancellable::NONE,
);
let _ = tx.send(());
});
let _ = rx.await;
}
}
fn delete(
&self,
key: samod_core::StorageKey,
) -> impl std::future::Future<Output = ()> + Send {
let path = self.key_to_path(&key);
async move {
let (tx, rx) = futures::channel::oneshot::channel();
std::thread::spawn(move || {
let file = gio::File::for_path(&path);
let _ = file.delete(gio::Cancellable::NONE);
let _ = tx.send(());
});
let _ = rx.await;
}
}
}
}