34 lines
678 B
Rust
34 lines
678 B
Rust
use std::{fs, io::Write, path::PathBuf};
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use eyre::Result;
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pub trait Database {
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fn save_checkpoint(&self, checkpoint: Vec<u8>) -> Result<()>;
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}
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pub struct FileDB {
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data_dir: PathBuf,
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}
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impl FileDB {
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pub fn new(data_dir: PathBuf) -> Self {
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FileDB { data_dir }
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}
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}
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impl Database for FileDB {
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fn save_checkpoint(&self, checkpoint: Vec<u8>) -> Result<()> {
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fs::create_dir_all(&self.data_dir)?;
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let mut f = fs::OpenOptions::new()
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.write(true)
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.create(true)
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.truncate(true)
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.open(self.data_dir.join("checkpoint"))?;
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f.write_all(checkpoint.as_slice())?;
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Ok(())
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}
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}
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