Add Whisper FastAPI backend

.gitignore

@@ -1,3 +1,5 @@
 data/*
 *.tar.zst
-__pycache__
+__pycache__
+.venv
+.ipynb_checkpoints

models/whisper/.python-version

@@ -0,0 +1 @@
+cpython@3.11.3

models/whisper/.vscode/settings.json

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+{
+    "[python]": {
+        "editor.defaultFormatter": "ms-python.black-formatter"
+    },
+    "python.formatting.provider": "none"
+}

models/whisper/README.md

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+# Whsiper API server
+
+## Pre-requisites
+
+* [Rye](https://github.com/mitsuhiko/rye)
+* System install of ffmpeg
+* For GPU usage, latest CUDA drivers
+
+## Getting Started
+
+```shell
+rye sync
+rye run uvicorn main:app --reload
+
+# to enter a Python shell:
+rye shell
+```
+
+## Usage
+
+Open `http://localhost:8000/docs` for a Swagger interface.
+
+## TODO
+
+* Tests
+* Error handling for ffmpeg

models/whisper/main.py

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+import whisper
+import aiofiles
+import asyncio
+from typing import Annotated
+from enum import Enum
+from fastapi import FastAPI, UploadFile, File, Form
+from pydantic import BaseModel
+from prometheus_fastapi_instrumentator import Instrumentator
+
+app = FastAPI()
+
+model = whisper.load_model("large")
+loop = asyncio.get_event_loop()
+
+
+def make_transcribe_request(filename, task, language):
+    return model.transcribe(filename, task=task, language=language)
+
+
+class WhisperTask(str, Enum):
+    transcribe = "transcribe"
+    translate = "translate"
+
+
+# TODO: Make this class use a dict, and show languages in Swagger
+class LanguageCode(str, Enum):
+    af = "af"
+    ar = "ar"
+    az = "az"
+    be = "be"
+    bg = "bg"
+    bs = "bs"
+    ca = "ca"
+    cs = "cs"
+    cy = "cy"
+    da = "da"
+    de = "de"
+    el = "el"
+    en = "en"
+    es = "es"
+    et = "et"
+    fa = "fa"
+    fi = "fi"
+    fr = "fr"
+    gl = "gl"
+    he = "he"
+    hi = "hi"
+    hr = "hr"
+    hu = "hu"
+    hy = "hy"
+    id = "id"
+    icelandic = "is"
+    it = "it"
+    ja = "ja"
+    kk = "kk"
+    kn = "kn"
+    ko = "ko"
+    lt = "lt"
+    lv = "lv"
+    mk = "mk"
+    ms = "ms"
+    mr = "mr"
+    mi = "mi"
+    nl = "nl"
+    ne = "ne"
+    no = "no"
+    pl = "pl"
+    pt = "pt"
+    ro = "ro"
+    ru = "ru"
+    sk = "sk"
+    sl = "sl"
+    sr = "sr"
+    sv = "sv"
+    sw = "sw"
+    ta = "ta"
+    th = "th"
+    tl = "tl"
+    tr = "tr"
+    uk = "uk"
+    ur = "ur"
+    vi = "vi"
+    zh = "zh"
+
+
+class TranscribeResponse(BaseModel):
+    result: str
+
+
+@app.post("/transcribe")
+async def transcribe(
+    file: Annotated[
+        UploadFile, File(description="Audio file to run the Whisper model on")
+    ],
+    task: Annotated[
+        WhisperTask, Form(description="The Whisper task to perform")
+    ] = "transcribe",
+    language: Annotated[
+        LanguageCode,
+        Form(
+            description="The ISO 3166-1 alpha-2 (two letter language) code of the source audio"
+        ),
+    ] = "en",
+) -> TranscribeResponse:
+    async with aiofiles.tempfile.NamedTemporaryFile("wb") as f:
+        contents = await file.read()
+        await f.write(contents)
+        result = await loop.run_in_executor(
+            None, make_transcribe_request, f.name, task, language
+        )
+        return TranscribeResponse(result=result["text"])
+
+
+@app.get("/healthz")
+async def healthz():
+    return {"status": "ok"}
+
+
+Instrumentator().instrument(app).expose(app)

models/whisper/pyproject.toml

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+[project]
+name = "whisper"
+version = "0.1.0"
+description = "Add a short description here"
+authors = [
+    { name = "Gerred Dillon", email = "hello@gerred.org" }
+]
+dependencies = [
+    "datasets~=2.12.0",
+    "transformers~=4.29.2",
+    "torch~=2.0.1",
+    "soundfile~=0.12.1",
+    "librosa~=0.10.0.post2",
+    "jupyter~=1.0.0",
+    "pydub~=0.25.1",
+    "openai-whisper==20230314",
+    "numpy~=1.24.3",
+    "fastapi~=0.96.0",
+    "uvicorn~=0.22.0",
+    "python-multipart~=0.0.6",
+    "prometheus-fastapi-instrumentator~=6.0.0",
+    "asyncio~=3.4.3",
+    "aiofiles~=23.1.0",
+    "fastapi_utils~=0.2.1",
+]
+readme = "README.md"
+requires-python = ">= 3.8"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.rye]
+managed = true
+
+[tool.hatch.metadata]
+allow-direct-references = true

models/whisper/requirements-dev.lock

@@ -0,0 +1,175 @@
+# generated by rye
+# use `rye lock` or `rye sync` to update this lockfile
+#
+# last locked with the following flags:
+#   pre: false
+#   features: []
+#   all-features: false
+
+-e file:.
+aiofiles==23.1.0
+aiohttp==3.8.4
+aiosignal==1.3.1
+anyio==3.7.0
+appdirs==1.4.4
+argon2-cffi==21.3.0
+argon2-cffi-bindings==21.2.0
+arrow==1.2.3
+asttokens==2.2.1
+async-timeout==4.0.2
+asyncio==3.4.3
+attrs==23.1.0
+audioread==3.0.0
+backcall==0.2.0
+beautifulsoup4==4.12.2
+bleach==6.0.0
+certifi==2023.5.7
+cffi==1.15.1
+charset-normalizer==3.1.0
+click==8.1.3
+cmake==3.26.3
+comm==0.1.3
+datasets==2.12.0
+debugpy==1.6.7
+decorator==5.1.1
+defusedxml==0.7.1
+dill==0.3.6
+executing==1.2.0
+fastapi==0.96.0
+fastapi-utils==0.2.1
+fastjsonschema==2.17.1
+ffmpeg-python==0.2.0
+filelock==3.12.0
+fqdn==1.5.1
+frozenlist==1.3.3
+fsspec==2023.5.0
+future==0.18.3
+greenlet==2.0.2
+h11==0.14.0
+huggingface-hub==0.15.1
+idna==3.4
+ipykernel==6.23.1
+ipython==8.13.2
+ipython-genutils==0.2.0
+ipywidgets==8.0.6
+isoduration==20.11.0
+jedi==0.18.2
+jinja2==3.1.2
+joblib==1.2.0
+jsonpointer==2.3
+jsonschema==4.17.3
+jupyter==1.0.0
+jupyter-client==8.2.0
+jupyter-console==6.6.3
+jupyter-core==5.3.0
+jupyter-events==0.6.3
+jupyter-server==2.6.0
+jupyter-server-terminals==0.4.4
+jupyterlab-pygments==0.2.2
+jupyterlab-widgets==3.0.7
+lazy-loader==0.2
+librosa==0.10.0.post2
+lit==16.0.5
+llvmlite==0.40.0
+markupsafe==2.1.2
+matplotlib-inline==0.1.6
+mistune==2.0.5
+more-itertools==9.1.0
+mpmath==1.3.0
+msgpack==1.0.5
+multidict==6.0.4
+multiprocess==0.70.14
+nbclassic==1.0.0
+nbclient==0.8.0
+nbconvert==7.4.0
+nbformat==5.9.0
+nest-asyncio==1.5.6
+networkx==3.1
+notebook==6.5.4
+notebook-shim==0.2.3
+numba==0.57.0
+numpy==1.24.3
+nvidia-cublas-cu11==11.10.3.66
+nvidia-cuda-cupti-cu11==11.7.101
+nvidia-cuda-nvrtc-cu11==11.7.99
+nvidia-cuda-runtime-cu11==11.7.99
+nvidia-cudnn-cu11==8.5.0.96
+nvidia-cufft-cu11==10.9.0.58
+nvidia-curand-cu11==10.2.10.91
+nvidia-cusolver-cu11==11.4.0.1
+nvidia-cusparse-cu11==11.7.4.91
+nvidia-nccl-cu11==2.14.3
+nvidia-nvtx-cu11==11.7.91
+openai-whisper==20230314
+overrides==7.3.1
+packaging==23.1
+pandas==2.0.2
+pandocfilters==1.5.0
+parso==0.8.3
+pexpect==4.8.0
+pickleshare==0.7.5
+platformdirs==3.5.1
+pooch==1.6.0
+prometheus-client==0.17.0
+prometheus-fastapi-instrumentator==6.0.0
+prompt-toolkit==3.0.38
+psutil==5.9.5
+ptyprocess==0.7.0
+pure-eval==0.2.2
+pyarrow==12.0.0
+pycparser==2.21
+pydantic==1.10.8
+pydub==0.25.1
+pygments==2.15.1
+pyrsistent==0.19.3
+python-dateutil==2.8.2
+python-json-logger==2.0.7
+python-multipart==0.0.6
+pytz==2023.3
+pyyaml==6.0
+pyzmq==25.1.0
+qtconsole==5.4.3
+qtpy==2.3.1
+regex==2023.5.5
+requests==2.31.0
+responses==0.18.0
+rfc3339-validator==0.1.4
+rfc3986-validator==0.1.1
+scikit-learn==1.2.2
+scipy==1.10.1
+send2trash==1.8.2
+six==1.16.0
+sniffio==1.3.0
+soundfile==0.12.1
+soupsieve==2.4.1
+soxr==0.3.5
+sqlalchemy==1.4.48
+stack-data==0.6.2
+starlette==0.27.0
+sympy==1.12
+terminado==0.17.1
+threadpoolctl==3.1.0
+tiktoken==0.3.1
+tinycss2==1.2.1
+tokenizers==0.13.3
+torch==2.0.1
+tornado==6.3.2
+tqdm==4.65.0
+traitlets==5.9.0
+transformers==4.29.2
+triton==2.0.0
+typing-extensions==4.6.2
+tzdata==2023.3
+uri-template==1.2.0
+urllib3==2.0.2
+uvicorn==0.22.0
+wcwidth==0.2.6
+webcolors==1.13
+webencodings==0.5.1
+websocket-client==1.5.2
+wheel==0.40.0
+widgetsnbextension==4.0.7
+xxhash==3.2.0
+yarl==1.9.2
+# The following packages are considered to be unsafe in a requirements file:
+setuptools==67.8.0