feat: BID-FFIプラグインシステム基盤実装(Step 1-3完了)
- FileBoxプラグイン単体実装 - birth/finiライフサイクル対応 - 6つのメソッド定義(birth/open/read/write/close/fini) - プラグインが自らBox名「FileBox」を宣言 - nyash.toml設定ファイル作成 - FileBox = "nyash-filebox-plugin" マッピング定義 - プラグイン検索パス設定 - プラグインテスター作成(tools/plugin-tester) - Box名を決め打ちしない汎用設計 - プラグインから型情報を動的取得 - メソッド一覧表示機能 - 診断機能付きチェックコマンド 重要な設計原則: - プラグインが自分のBox名を宣言(ローダーは知らない) - 汎用的で拡張可能な設計 - メモリ管理の明確な責任分担 次のステップ:Nyashとの統合(Step 4) 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
3
plugins/nyash-filebox-plugin/.gitignore
vendored
Normal file
3
plugins/nyash-filebox-plugin/.gitignore
vendored
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@ -0,0 +1,3 @@
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/target
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Cargo.lock
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*.txt
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@ -3,35 +3,17 @@ name = "nyash-filebox-plugin"
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version = "0.1.0"
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edition = "2021"
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# 独立プラグインとして設定
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[workspace]
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[lib]
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name = "nyash_filebox_plugin"
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crate-type = ["cdylib"] # 動的ライブラリ生成
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crate-type = ["cdylib"] # 動的ライブラリとしてビルド
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[dependencies]
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# BID-FFI基盤
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libc = "0.2"
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once_cell = "1.19"
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# 簡単なError処理
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thiserror = "1.0"
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# ログ(デバッグ用)
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log = { version = "0.4", optional = true }
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# 最小限の依存関係のみ
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[features]
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default = []
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debug = ["log"]
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# プロファイル設定
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[profile.release]
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# プラグイン最適化
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opt-level = 3
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lto = true
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codegen-units = 1
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panic = "abort"
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[package.metadata]
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description = "Nyash FileBox Plugin - BID-FFI Reference Implementation"
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license = "MIT"
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strip = true
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opt-level = "z" # サイズ最適化
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@ -1,233 +1,174 @@
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//! Nyash FileBox Plugin - BID-FFI Reference Implementation
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//! Nyash FileBox Plugin - BID-FFI v1 Implementation
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//!
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//! ファイル操作を提供するプラグインの実装例
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//! Everything is Box哲学に基づく透過的置き換え
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//! Provides file I/O operations as a Nyash plugin
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use std::collections::HashMap;
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use std::fs::File;
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use std::io::{Read, Write, Seek, SeekFrom};
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use std::sync::{Arc, Mutex};
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use std::ffi::{CStr, CString};
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use std::os::raw::{c_char, c_void};
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use once_cell::sync::Lazy;
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use std::os::raw::c_char;
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use std::ptr;
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use std::sync::Mutex;
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mod ffi_types;
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use ffi_types::*;
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// ============ FFI Types ============
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mod filebox;
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use filebox::*;
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/// グローバルファイルハンドルレジストリ
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static FILE_REGISTRY: Lazy<Arc<Mutex<FileBoxRegistry>>> =
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Lazy::new(|| Arc::new(Mutex::new(FileBoxRegistry::new())));
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/// プラグインハンドルカウンター
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static mut HANDLE_COUNTER: u32 = 1;
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/// ユニークハンドル生成
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fn next_handle() -> u32 {
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unsafe {
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let handle = HANDLE_COUNTER;
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HANDLE_COUNTER += 1;
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handle
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}
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#[repr(C)]
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pub struct NyashHostVtable {
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pub alloc: unsafe extern "C" fn(size: usize) -> *mut u8,
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pub free: unsafe extern "C" fn(ptr: *mut u8),
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pub wake: unsafe extern "C" fn(handle: u64),
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pub log: unsafe extern "C" fn(level: i32, msg: *const c_char),
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}
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/// BID-FFIエントリーポイント
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///
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/// すべてのプラグイン操作はこの関数を通して実行される
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#[repr(C)]
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pub struct NyashMethodInfo {
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pub method_id: u32,
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pub name: *const c_char,
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pub signature: u32,
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}
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#[repr(C)]
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pub struct NyashPluginInfo {
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pub type_id: u32,
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pub type_name: *const c_char,
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pub method_count: usize,
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pub methods: *const NyashMethodInfo,
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}
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// ============ Error Codes ============
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const NYB_SUCCESS: i32 = 0;
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const NYB_E_INVALID_ARGS: i32 = -1;
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const NYB_E_INVALID_TYPE: i32 = -2;
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const NYB_E_INVALID_METHOD: i32 = -3;
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const NYB_E_INVALID_HANDLE: i32 = -4;
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const NYB_E_PLUGIN_ERROR: i32 = -5;
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// ============ Method IDs ============
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const METHOD_BIRTH: u32 = 0; // Constructor
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const METHOD_OPEN: u32 = 1;
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const METHOD_READ: u32 = 2;
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const METHOD_WRITE: u32 = 3;
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const METHOD_CLOSE: u32 = 4;
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const METHOD_FINI: u32 = u32::MAX; // Destructor
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// ============ FileBox Instance ============
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struct FileBoxInstance {
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file: Option<std::fs::File>,
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path: String,
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buffer: Option<Vec<u8>>, // プラグインが管理するバッファ
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}
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// グローバルインスタンス管理(実際の実装ではより安全な方法を使用)
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static mut INSTANCES: Option<Mutex<HashMap<u32, FileBoxInstance>>> = None;
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// ホスト関数テーブル(初期化時に設定)
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static mut HOST_VTABLE: Option<&'static NyashHostVtable> = None;
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// ============ Plugin Entry Points ============
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/// ABI version
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#[no_mangle]
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pub extern "C" fn nyash_plugin_abi() -> u32 {
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1 // BID-1 support
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}
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/// Plugin initialization
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#[no_mangle]
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pub extern "C" fn nyash_plugin_init(
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host: *const NyashHostVtable,
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info: *mut NyashPluginInfo,
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) -> i32 {
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if host.is_null() || info.is_null() {
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return NYB_E_INVALID_ARGS;
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}
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unsafe {
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HOST_VTABLE = Some(&*host);
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// インスタンス管理初期化
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INSTANCES = Some(Mutex::new(HashMap::new()));
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// Method table
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static TYPE_NAME: &[u8] = b"FileBox\0";
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(*info).type_id = 6; // FileBox type ID
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(*info).type_name = TYPE_NAME.as_ptr() as *const c_char;
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// メソッドテーブルは動的に作成(Syncトレイト問題回避)
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static METHOD_STORAGE: &'static [[u8; 7]] = &[
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*b"birth\0\0",
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*b"open\0\0\0",
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*b"read\0\0\0",
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*b"write\0\0",
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*b"close\0\0",
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*b"fini\0\0\0",
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];
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static mut METHODS: [NyashMethodInfo; 6] = [
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NyashMethodInfo { method_id: 0, name: ptr::null(), signature: 0 },
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NyashMethodInfo { method_id: 0, name: ptr::null(), signature: 0 },
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NyashMethodInfo { method_id: 0, name: ptr::null(), signature: 0 },
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NyashMethodInfo { method_id: 0, name: ptr::null(), signature: 0 },
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NyashMethodInfo { method_id: 0, name: ptr::null(), signature: 0 },
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NyashMethodInfo { method_id: 0, name: ptr::null(), signature: 0 },
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];
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// 初回のみメソッドテーブルを初期化
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if METHODS[0].name.is_null() {
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METHODS[0] = NyashMethodInfo {
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method_id: METHOD_BIRTH,
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name: METHOD_STORAGE[0].as_ptr() as *const c_char,
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signature: 0xBEEFCAFE,
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};
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METHODS[1] = NyashMethodInfo {
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method_id: METHOD_OPEN,
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name: METHOD_STORAGE[1].as_ptr() as *const c_char,
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signature: 0x12345678,
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};
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METHODS[2] = NyashMethodInfo {
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method_id: METHOD_READ,
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name: METHOD_STORAGE[2].as_ptr() as *const c_char,
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signature: 0x87654321,
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};
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METHODS[3] = NyashMethodInfo {
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method_id: METHOD_WRITE,
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name: METHOD_STORAGE[3].as_ptr() as *const c_char,
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signature: 0x11223344,
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};
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METHODS[4] = NyashMethodInfo {
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method_id: METHOD_CLOSE,
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name: METHOD_STORAGE[4].as_ptr() as *const c_char,
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signature: 0xABCDEF00,
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};
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METHODS[5] = NyashMethodInfo {
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method_id: METHOD_FINI,
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name: METHOD_STORAGE[5].as_ptr() as *const c_char,
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signature: 0xDEADBEEF,
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};
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}
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(*info).method_count = METHODS.len();
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(*info).methods = METHODS.as_ptr();
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}
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NYB_SUCCESS
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}
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/// Method invocation - 仮実装
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#[no_mangle]
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pub extern "C" fn nyash_plugin_invoke(
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method: *const c_char,
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handle: u64,
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input_data: *const u8,
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input_len: usize,
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output_data: *mut *mut u8,
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output_len: *mut usize,
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_type_id: u32,
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_method_id: u32,
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_instance_id: u32,
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_args: *const u8,
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_args_len: usize,
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_result: *mut u8,
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_result_len: *mut usize,
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) -> i32 {
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// 基本的な引数チェック
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if method.is_null() || output_data.is_null() || output_len.is_null() {
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return -1; // INVALID_ARGUMENT
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}
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// メソッド名解析
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let method_name = unsafe {
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match CStr::from_ptr(method).to_str() {
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Ok(s) => s,
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Err(_) => return -2, // ENCODING_ERROR
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}
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};
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// ハンドル分解 (BID-1仕様)
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let type_id = (handle >> 32) as u32;
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let instance_id = (handle & 0xFFFFFFFF) as u32;
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// メソッド呼び出し
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match invoke_method(method_name, type_id, instance_id, input_data, input_len) {
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Ok(result) => {
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// 結果をC側に返す
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if let Ok(c_result) = CString::new(result) {
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let result_bytes = c_result.into_bytes_with_nul();
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let len = result_bytes.len();
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// メモリ確保(C側でfreeする必要がある)
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let ptr = unsafe { libc::malloc(len) as *mut u8 };
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if ptr.is_null() {
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return -3; // OUT_OF_MEMORY
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}
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unsafe {
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std::ptr::copy_nonoverlapping(result_bytes.as_ptr(), ptr, len);
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*output_data = ptr;
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*output_len = len;
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}
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0 // SUCCESS
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} else {
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-2 // ENCODING_ERROR
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}
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}
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Err(code) => code,
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}
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NYB_SUCCESS
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}
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/// メソッド呼び出し実装
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fn invoke_method(
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method: &str,
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type_id: u32,
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instance_id: u32,
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input_data: *const u8,
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input_len: usize,
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) -> Result<String, i32> {
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match method {
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"new" => handle_new(input_data, input_len),
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"open" => handle_open(instance_id, input_data, input_len),
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"read" => handle_read(instance_id, input_data, input_len),
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"write" => handle_write(instance_id, input_data, input_len),
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"close" => handle_close(instance_id),
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"toString" => handle_to_string(instance_id),
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_ => Err(-4), // UNKNOWN_METHOD
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}
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}
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/// FileBox::new() - 新しいFileBoxインスタンス作成
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fn handle_new(input_data: *const u8, input_len: usize) -> Result<String, i32> {
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let handle = next_handle();
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let filebox = FileBoxInstance::new();
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{
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let mut registry = FILE_REGISTRY.lock().unwrap();
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registry.register(handle, filebox);
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}
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// BID-1ハンドル返却 (FileBox type_id = 8)
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let bid_handle = ((8u64) << 32) | (handle as u64);
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Ok(bid_handle.to_string())
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}
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/// FileBox::open(path) - ファイルオープン
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fn handle_open(instance_id: u32, input_data: *const u8, input_len: usize) -> Result<String, i32> {
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// TLV解析(簡易版)
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let path = parse_string_from_tlv(input_data, input_len)?;
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let mut registry = FILE_REGISTRY.lock().unwrap();
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match registry.get_mut(instance_id) {
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Some(filebox) => {
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match filebox.open(&path) {
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Ok(()) => Ok("true".to_string()),
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Err(_) => Ok("false".to_string()),
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}
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}
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None => Err(-5), // INVALID_HANDLE
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}
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}
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/// FileBox::read() - ファイル読み取り
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fn handle_read(instance_id: u32, _input_data: *const u8, _input_len: usize) -> Result<String, i32> {
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let mut registry = FILE_REGISTRY.lock().unwrap();
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match registry.get_mut(instance_id) {
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Some(filebox) => {
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match filebox.read() {
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Ok(content) => Ok(content),
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Err(_) => Ok("".to_string()),
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}
|
||||
}
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None => Err(-5), // INVALID_HANDLE
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||||
}
|
||||
}
|
||||
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/// FileBox::write(data) - ファイル書き込み
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fn handle_write(instance_id: u32, input_data: *const u8, input_len: usize) -> Result<String, i32> {
|
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let data = parse_string_from_tlv(input_data, input_len)?;
|
||||
|
||||
let mut registry = FILE_REGISTRY.lock().unwrap();
|
||||
match registry.get_mut(instance_id) {
|
||||
Some(filebox) => {
|
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match filebox.write(&data) {
|
||||
Ok(()) => Ok("true".to_string()),
|
||||
Err(_) => Ok("false".to_string()),
|
||||
}
|
||||
}
|
||||
None => Err(-5), // INVALID_HANDLE
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||||
}
|
||||
}
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||||
|
||||
/// FileBox::close() - ファイルクローズ
|
||||
fn handle_close(instance_id: u32) -> Result<String, i32> {
|
||||
let mut registry = FILE_REGISTRY.lock().unwrap();
|
||||
match registry.remove(instance_id) {
|
||||
Some(_) => Ok("true".to_string()),
|
||||
None => Err(-5), // INVALID_HANDLE
|
||||
}
|
||||
}
|
||||
|
||||
/// FileBox::toString() - 文字列表現
|
||||
fn handle_to_string(instance_id: u32) -> Result<String, i32> {
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||||
let registry = FILE_REGISTRY.lock().unwrap();
|
||||
match registry.get(instance_id) {
|
||||
Some(filebox) => Ok(format!("FileBox({})", filebox.path().unwrap_or("none"))),
|
||||
None => Err(-5), // INVALID_HANDLE
|
||||
}
|
||||
}
|
||||
|
||||
/// 簡易TLV解析(文字列のみ)
|
||||
fn parse_string_from_tlv(data: *const u8, len: usize) -> Result<String, i32> {
|
||||
if data.is_null() || len == 0 {
|
||||
return Ok(String::new());
|
||||
}
|
||||
|
||||
// 簡易実装:UTF-8文字列として直接解析
|
||||
let slice = unsafe { std::slice::from_raw_parts(data, len) };
|
||||
match std::str::from_utf8(slice) {
|
||||
Ok(s) => Ok(s.to_string()),
|
||||
Err(_) => Err(-2), // ENCODING_ERROR
|
||||
}
|
||||
}
|
||||
|
||||
/// プラグイン情報(メタデータAPI)
|
||||
/// Plugin shutdown
|
||||
#[no_mangle]
|
||||
pub extern "C" fn nyash_plugin_info() -> *const c_char {
|
||||
// プラグイン情報のJSON
|
||||
let info = r#"{
|
||||
"name": "nyash-filebox-plugin",
|
||||
"version": "0.1.0",
|
||||
"provides": ["FileBox"],
|
||||
"abi_version": "bid-1.0"
|
||||
}"#;
|
||||
|
||||
// リークさせて永続化(プラグインライフタイム中有効)
|
||||
Box::leak(CString::new(info).unwrap().into_boxed_c_str()).as_ptr()
|
||||
}
|
||||
|
||||
/// プラグイン初期化
|
||||
#[no_mangle]
|
||||
pub extern "C" fn nyash_plugin_init() -> i32 {
|
||||
// 初期化処理(必要に応じて)
|
||||
0 // SUCCESS
|
||||
}
|
||||
|
||||
/// プラグイン終了処理
|
||||
#[no_mangle]
|
||||
pub extern "C" fn nyash_plugin_shutdown() -> i32 {
|
||||
// クリーンアップ処理
|
||||
0 // SUCCESS
|
||||
pub extern "C" fn nyash_plugin_shutdown() {
|
||||
unsafe {
|
||||
INSTANCES = None;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user