Function create_snapshot 

pub unsafe fn create_snapshot(
    db: *mut sqlite3,
    temp_dir: &Path,
    encryption: &EncryptionService,
) -> Result<Vec<u8>, SnapshotError>

Create a snapshot of the database as encrypted bytes.

Uses VACUUM INTO to create a clean copy of the database at a temp path, reads the bytes, encrypts, and returns the encrypted blob.

Safety

db must be a valid, open sqlite3 connection pointer.