docs: 为全部代码补充中文注释并加入 AGENTS 注释规范
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@@ -18,3 +18,10 @@ uv add faster-whisper
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```
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Linux 上同样在 `wov-node-whisper` 目录执行 `uv add faster-whisper`;节点管理器会自动使用该仓库 `.venv/bin/python` 启动节点。
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## 代码注释规范
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- 本仓库所有源码(Python、TOML 等支持注释的文件)必须配有详细中文注释,说明模块职责、模型加载参数与 SRT 生成逻辑,确保后续维护人员可以快速理解代码工作原理。
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- 新增或修改代码时,必须同步补充或更新对应注释;不得删除已有注释。
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- 测试代码同样必须配有中文注释,说明每条测试验证的行为。
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- JSON 数据文件(`node.manifest.json`)不支持注释,字段语义以 `wov-sdk` 的 `NodeManifest` 模型注释和本文档输入/输出说明为准。
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@@ -1,8 +1,10 @@
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# WOV faster-whisper 节点配置:使用 uv 管理环境与依赖。
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[project]
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name = "wov-node-whisper"
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version = "0.1.0"
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description = "WOV faster-whisper ASR node"
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requires-python = ">=3.11"
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# 显式加入 NVIDIA 动态库包,保证 GPU 场景下 cublas/cudnn 可被加载。
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dependencies = [
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"faster-whisper>=1.2.1",
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"nvidia-cublas-cu12>=12.9.2.10",
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@@ -10,16 +12,20 @@ dependencies = [
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"wov-sdk",
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]
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# 本地路径依赖 wov-sdk。
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[tool.uv.sources]
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wov-sdk = { path = "../wov-sdk" }
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# 开发依赖:pytest 与覆盖率工具。
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[dependency-groups]
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dev = ["pytest", "pytest-cov"]
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# pytest 配置:强制 100% 行覆盖率。
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[tool.pytest.ini_options]
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testpaths = ["tests"]
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pythonpath = ["."]
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addopts = "--cov=wov_node_whisper --cov-report=term-missing --cov-fail-under=100"
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# 仅打包节点包本身。
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[tool.setuptools]
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packages = ["wov_node_whisper"]
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@@ -1,3 +1,9 @@
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"""faster-whisper 转写节点测试。
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通过注入假 faster_whisper 模块覆盖时间戳格式化、参数传递、SRT 生成、
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异常处理和入口点启动等真实代码路径。
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"""
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import runpy
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import sys
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import types
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@@ -8,6 +14,8 @@ from wov_sdk.models import InvokeRequest
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class FakeSegment:
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"""模拟 faster-whisper 的分段对象,只提供转写测试需要的字段。"""
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def __init__(self, start, end, text):
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self.start = start
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self.end = end
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@@ -15,14 +23,18 @@ class FakeSegment:
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class FakeWhisperModel:
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"""记录构造参数并返回固定分段的假 WhisperModel。"""
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instances: list[tuple[tuple, dict]] = []
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def __init__(self, *args, **kwargs):
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# 记录每次构造参数,测试据此断言 device/compute_type 传递。
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FakeWhisperModel.instances.append((args, kwargs))
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self.args = args
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self.kwargs = kwargs
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def transcribe(self, path, **kwargs):
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# 返回固定两个分段:一个普通时长,一个跨小时验证时间戳格式。
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self.transcribe_args = (path, kwargs)
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return (
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[
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@@ -34,11 +46,13 @@ class FakeWhisperModel:
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def _install_fake_whisper(monkeypatch, model_class=FakeWhisperModel) -> None:
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"""把假 faster_whisper 模块注入 sys.modules,替代真实依赖。"""
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fake_module = types.SimpleNamespace(WhisperModel=model_class)
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monkeypatch.setitem(sys.modules, "faster_whisper", fake_module)
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def _request(tmp_path, **overrides) -> InvokeRequest:
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"""构造默认音频输入与日语参数的调用请求。"""
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payload = {
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"run_id": "run_1",
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"node_instance_id": "ni_1",
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@@ -51,12 +65,14 @@ def _request(tmp_path, **overrides) -> InvokeRequest:
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def test_format_timestamp() -> None:
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"""验证秒数到 SRT 时间戳的格式化结果。"""
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assert format_timestamp(0) == "00:00:00,000"
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assert format_timestamp(3600.5) == "01:00:00,500"
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assert format_timestamp(61.25) == "00:01:01,250"
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def test_success(tmp_path, monkeypatch) -> None:
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"""验证成功转写会生成 SRT 并默认使用 auto 设备/计算类型。"""
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FakeWhisperModel.instances.clear()
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_install_fake_whisper(monkeypatch)
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(tmp_path / "audio.wav").write_bytes(b"fake")
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@@ -71,6 +87,7 @@ def test_success(tmp_path, monkeypatch) -> None:
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def test_compute_type_override(tmp_path, monkeypatch) -> None:
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"""验证请求参数可以覆盖默认计算类型。"""
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FakeWhisperModel.instances.clear()
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_install_fake_whisper(monkeypatch)
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(tmp_path / "audio.wav").write_bytes(b"fake")
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@@ -81,6 +98,7 @@ def test_compute_type_override(tmp_path, monkeypatch) -> None:
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def test_model_raises(tmp_path, monkeypatch) -> None:
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"""验证模型加载失败时返回 failed 与错误信息。"""
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class BrokenModel:
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def __init__(self, *args, **kwargs):
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raise RuntimeError("model load failed")
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@@ -93,17 +111,20 @@ def test_model_raises(tmp_path, monkeypatch) -> None:
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def test_missing_input(tmp_path) -> None:
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"""验证缺少 audio_uri 时返回失败。"""
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response = invoke(_request(tmp_path, inputs={}))
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assert response.status == "failed"
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def test_missing_file(tmp_path) -> None:
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"""验证音频文件不存在时返回失败。"""
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response = invoke(_request(tmp_path))
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assert response.status == "failed"
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assert "audio file not found" in response.error
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def test_entrypoint(monkeypatch) -> None:
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"""验证 python -m wov_node_whisper 会加载 faster-whisper manifest。"""
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module_path = Path(__file__).resolve().parent.parent / "wov_node_whisper" / "__main__.py"
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captured = {}
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@@ -1 +1,4 @@
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"""WOV faster-whisper ASR node."""
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"""WOV faster-whisper 语音转写节点。
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把 FFmpeg 节点产出的标准化音频转写为 SRT 字幕,供后续 LLM 翻译节点使用。
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"""
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@@ -1,3 +1,9 @@
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"""faster-whisper ASR 节点入口。
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使用 faster-whisper 加载 Whisper 模型,将音频转写为带时间轴的 SRT 文件。
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模型、设备与计算类型均可通过参数或环境变量配置。
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"""
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from __future__ import annotations
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import json
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@@ -9,6 +15,8 @@ from wov_sdk.server import run_node
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def format_timestamp(seconds: float) -> str:
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"""把秒数格式化为 SRT 时间戳,例如 01:00:00,500。"""
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# 先换算成毫秒再逐级拆分为时/分/秒/毫秒,避免浮点误差。
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total_ms = int(seconds * 1000)
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hours, remainder = divmod(total_ms, 3600000)
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minutes, remainder = divmod(remainder, 60000)
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@@ -17,28 +25,34 @@ def format_timestamp(seconds: float) -> str:
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def invoke(request: InvokeRequest) -> InvokeResponse:
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"""转写音频并生成 SRT 字幕,产物为 transcript.srt。"""
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audio_uri = request.inputs.get("audio_uri")
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if not audio_uri:
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return InvokeResponse(status="failed", error="audio_uri is required")
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# 文件不存在时提前失败,避免进入耗时的模型加载流程。
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audio_path = Path(audio_uri)
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if not audio_path.is_file():
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return InvokeResponse(status="failed", error="audio file not found")
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try:
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# 延迟导入 faster-whisper,保证健康检查等轻量路径不依赖重型依赖。
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from faster_whisper import WhisperModel
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# 参数优先于环境变量;模型路径缺省使用 faster-whisper 的 large-v3。
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model_path = str(
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request.params.get("model_path")
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or os.getenv("WHISPER_MODEL_PATH", "large-v3")
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)
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device = str(request.params.get("device") or os.getenv("WHISPER_DEVICE", "auto"))
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# auto 让 faster-whisper 根据硬件自动选择 float16/int8 等计算类型。
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compute_type = str(request.params.get("compute_type") or "auto")
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model = WhisperModel(
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model_path,
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device=device,
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compute_type=compute_type,
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)
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# language 默认日语,vad_filter 过滤静音段以提升转写质量。
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segments, _info = model.transcribe(
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str(audio_path),
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language=str(request.params.get("language", "ja")),
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@@ -49,6 +63,7 @@ def invoke(request: InvokeRequest) -> InvokeResponse:
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output_dir = Path(request.output_dir)
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output_dir.mkdir(parents=True, exist_ok=True)
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output_path = output_dir / "transcript.srt"
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# 按 SRT 标准输出:序号、时间轴、文本和空行交替。
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lines: list[str] = []
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for index, segment in enumerate(segments, start=1):
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lines.extend(
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@@ -62,10 +77,12 @@ def invoke(request: InvokeRequest) -> InvokeResponse:
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output_path.write_text("\n".join(lines), encoding="utf-8")
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return InvokeResponse(status="completed", outputs={"srt_uri": str(output_path)})
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except Exception as exc: # noqa: BLE001
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# 模型加载或转写异常统一转换为 failed 响应,不让节点进程退出。
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return InvokeResponse(status="failed", error=str(exc))
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def main() -> None:
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"""加载节点清单并以本模块的 invoke 处理器启动服务。"""
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manifest_path = Path(__file__).resolve().parent.parent / "node.manifest.json"
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with open(manifest_path, "r", encoding="utf-8") as f:
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manifest = NodeManifest.from_dict(json.load(f))
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