Function check_cache 

pub fn check_cache(cache_dir: &Utf8Path, version: &str) -> CacheLookupResult

Checks if the cache contains valid binaries for the given version.

A cache entry is considered valid if:

1. The version directory exists
2. The .complete marker file is present
3. The bin subdirectory exists (indicating extracted binaries)

Arguments

• cache_dir - Root directory of the binary cache
• version - Exact version string to look up (e.g., “17.4.0”)

Examples

use camino::Utf8Path;
use pg_embedded_setup_unpriv::cache::{check_cache, CacheLookupResult};

let cache_dir = Utf8Path::new("/home/user/.cache/pg-embedded/binaries");
match check_cache(cache_dir, "17.4.0") {
    CacheLookupResult::Hit { source_dir } => {
        println!("Found cached binaries at {source_dir}");
    }
    CacheLookupResult::Miss => {
        println!("Cache miss, need to download");
    }
}