tonbo 0.4.0-a1

Embedded database for serverless and edge runtimes, storing data as Parquet on S3
Documentation 
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use std::{
    fs,
    path::{Path, PathBuf},
    time::{SystemTime, UNIX_EPOCH},
};

pub(super) fn workspace_temp_dir(prefix: &str) -> PathBuf {
    let base = std::env::current_dir().expect("cwd");
    let unique = SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .expect("time")
        .as_nanos();
    let dir = base
        .join("target")
        .join("tmp")
        .join(format!("{prefix}-{unique}"));
    fs::create_dir_all(&dir).expect("create temp dir");
    dir
}

pub(super) fn wal_segment_paths(dir: &Path) -> Vec<PathBuf> {
    if !dir.exists() {
        return Vec::new();
    }
    let mut files = Vec::new();
    if let Ok(entries) = fs::read_dir(dir) {
        for entry in entries.flatten() {
            let path = entry.path();
            if path.extension().and_then(|ext| ext.to_str()) == Some("tonwal") {
                files.push(path);
            }
        }
    }
    files.sort();
    files
}