vantadb 0.1.4

VantaDB: An embedded persistent memory and vector retrieval engine for local-first AI applications.
Documentation 
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//! JSONL export/import certification for persistent memory APIs.

use std::fs;
use std::path::Path;
use tempfile::tempdir;
use vantadb::{
    VantaEmbedded, VantaMemoryInput, VantaMemoryListOptions, VantaMemorySearchRequest, VantaValue,
};

fn str_value(value: &str) -> VantaValue {
    VantaValue::String(value.to_string())
}

fn record(namespace: &str, key: &str, payload: &str, category: &str) -> VantaMemoryInput {
    let mut input = VantaMemoryInput::new(namespace, key, payload);
    input
        .metadata
        .insert("category".to_string(), str_value(category));
    input.vector = Some(vec![1.0, 0.0, 0.0]);
    input
}

fn copy_dir_all(source: &Path, target: &Path) {
    fs::create_dir_all(target).expect("create restore dir");
    for entry in fs::read_dir(source).expect("read source dir") {
        let entry = entry.expect("source entry");
        let file_type = entry.file_type().expect("entry type");
        let target_path = target.join(entry.file_name());
        if file_type.is_dir() {
            copy_dir_all(&entry.path(), &target_path);
        } else {
            fs::copy(entry.path(), target_path).expect("copy file");
        }
    }
}

#[test]
fn export_import_namespace_round_trip() {
    let source_dir = tempdir().expect("source tempdir");
    let target_dir = tempdir().expect("target tempdir");
    let export_path = source_dir.path().join("agent-main.jsonl");

    let source = VantaEmbedded::open(source_dir.path()).expect("open source");
    source
        .put(record("agent/main", "a", "alpha memory", "task"))
        .expect("put a");
    source
        .put(record("agent/main", "b", "beta memory", "note"))
        .expect("put b");
    source
        .put(record("agent/other", "c", "outside namespace", "task"))
        .expect("put c");
    source.flush().expect("flush source");

    let export = source
        .export_namespace(&export_path, "agent/main")
        .expect("export namespace");
    assert_eq!(export.records_exported, 2);
    assert_eq!(export.namespaces, vec!["agent/main".to_string()]);

    let target = VantaEmbedded::open(target_dir.path()).expect("open target");
    let import = target.import_file(&export_path).expect("import file");
    assert_eq!(import.inserted, 2);
    assert_eq!(import.updated, 0);
    assert_eq!(import.errors, 0);

    let fetched = target.get("agent/main", "a").expect("get").expect("record");
    assert_eq!(fetched.payload, "alpha memory");
    assert_eq!(fetched.metadata.get("category"), Some(&str_value("task")));

    let page = target
        .list("agent/main", VantaMemoryListOptions::default())
        .expect("list");
    assert_eq!(page.records.len(), 2);

    let hits = target
        .search(VantaMemorySearchRequest {
            namespace: "agent/main".to_string(),
            query_vector: vec![1.0, 0.0, 0.0],
            filters: Default::default(),
            text_query: None,
            top_k: 5,
            ..Default::default()
        })
        .expect("search");
    assert_eq!(hits.len(), 2);
    assert!(target
        .get("agent/other", "c")
        .expect("get outside namespace")
        .is_none());
}

#[test]
fn export_all_import_updates_existing_records() {
    let source_dir = tempdir().expect("source tempdir");
    let target_dir = tempdir().expect("target tempdir");
    let export_path = source_dir.path().join("all.jsonl");

    let source = VantaEmbedded::open(source_dir.path()).expect("open source");
    source
        .put(record("agent/main", "a", "alpha memory", "task"))
        .expect("put a");
    source
        .put(record("agent/other", "a", "other alpha", "note"))
        .expect("put other");

    let export = source.export_all(&export_path).expect("export all");
    assert_eq!(export.records_exported, 2);

    let target = VantaEmbedded::open(target_dir.path()).expect("open target");
    target
        .put(record("agent/main", "a", "stale alpha", "task"))
        .expect("seed stale");

    let import = target.import_file(&export_path).expect("import file");
    assert_eq!(import.inserted, 1);
    assert_eq!(import.updated, 1);
    assert_eq!(import.errors, 0);

    let updated = target
        .get("agent/main", "a")
        .expect("get updated")
        .expect("record");
    assert_eq!(updated.payload, "alpha memory");
    assert_eq!(updated.version, 1);
}

#[test]
fn fjall_cold_copy_restore_preserves_memory_text_and_hybrid_search() {
    let source_dir = tempdir().expect("source tempdir");
    let restore_parent = tempdir().expect("restore parent");
    let restore_path = restore_parent.path().join("restored-db");

    {
        let source = VantaEmbedded::open(source_dir.path()).expect("open source");
        let mut input = record("agent/main", "restore", "restore alpha phrase", "backup");
        input.vector = Some(vec![1.0, 0.0, 0.0]);
        source.put(input).expect("put restore");
        source.flush().expect("flush source");
        source.close().expect("close source before cold copy");
    }

    copy_dir_all(source_dir.path(), &restore_path);

    let restored = VantaEmbedded::open(&restore_path).expect("open restored");
    let fetched = restored
        .get("agent/main", "restore")
        .expect("get restored")
        .expect("restored record");
    assert_eq!(fetched.payload, "restore alpha phrase");

    let audit = restored
        .audit_text_index(Some("agent/main"))
        .expect("audit restored text index");
    assert!(audit.passed);

    let text_hits = restored
        .search(VantaMemorySearchRequest {
            namespace: "agent/main".to_string(),
            query_vector: Vec::new(),
            filters: Default::default(),
            text_query: Some("\"restore alpha\"".to_string()),
            top_k: 5,
            ..Default::default()
        })
        .expect("restored text search");
    assert_eq!(text_hits[0].record.key, "restore");

    let hybrid_hits = restored
        .search(VantaMemorySearchRequest {
            namespace: "agent/main".to_string(),
            query_vector: vec![1.0, 0.0, 0.0],
            filters: Default::default(),
            text_query: Some("restore".to_string()),
            top_k: 5,
            ..Default::default()
        })
        .expect("restored hybrid search");
    assert_eq!(hybrid_hits[0].record.key, "restore");
}