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Add a FileDataSource that fetches archive files from local disk.
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Original file line number | Diff line number | Diff line change |
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use std::fs::File; | ||
use std::path::{Path, PathBuf}; | ||
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use serde::Deserialize; | ||
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use crate::data::{ | ||
DataSource, DataSourceInfo, EntryID, SlotMetaTile, SlotTile, SummaryTile, TileID, | ||
}; | ||
use crate::http::schema::TileRequestRef; | ||
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pub struct FileDataSource { | ||
pub basedir: PathBuf, | ||
} | ||
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impl FileDataSource { | ||
pub fn new(basedir: impl AsRef<Path>) -> Self { | ||
Self { | ||
basedir: basedir.as_ref().to_owned(), | ||
} | ||
} | ||
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fn read_file<T>(&self, path: impl AsRef<Path>) -> T | ||
where | ||
T: for<'a> Deserialize<'a>, | ||
{ | ||
let f = File::open(path).expect("opening file failed"); | ||
let f = zstd::Decoder::new(f).expect("zstd decompression failed"); | ||
let result = ciborium::from_reader(f).expect("cbor decoding failed"); | ||
result | ||
Check failure on line 29 in src/file_data.rs GitHub Actions / Clippy
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} | ||
} | ||
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impl DataSource for FileDataSource { | ||
fn fetch_info(&self) -> DataSourceInfo { | ||
let mut path = self.basedir.clone(); | ||
path.push("info"); | ||
self.read_file::<DataSourceInfo>(&path) | ||
} | ||
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fn fetch_summary_tile(&self, entry_id: &EntryID, tile_id: TileID, _full: bool) -> SummaryTile { | ||
let req = TileRequestRef { entry_id, tile_id }; | ||
let mut path = self.basedir.clone(); | ||
path.push("summary_tile"); | ||
path.push(&req.to_slug()); | ||
self.read_file::<SummaryTile>(&path) | ||
} | ||
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fn fetch_slot_tile(&self, entry_id: &EntryID, tile_id: TileID, _full: bool) -> SlotTile { | ||
let req = TileRequestRef { entry_id, tile_id }; | ||
let mut path = self.basedir.clone(); | ||
path.push("slot_tile"); | ||
path.push(&req.to_slug()); | ||
self.read_file::<SlotTile>(&path) | ||
} | ||
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fn fetch_slot_meta_tile( | ||
&self, | ||
entry_id: &EntryID, | ||
tile_id: TileID, | ||
_full: bool, | ||
) -> SlotMetaTile { | ||
let req = TileRequestRef { entry_id, tile_id }; | ||
let mut path = self.basedir.clone(); | ||
path.push("slot_meta_tile"); | ||
path.push(&req.to_slug()); | ||
self.read_file::<SlotMetaTile>(&path) | ||
} | ||
} |
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