如何让 PySoundfile 在 Google Cloud Platform 柔性环境中运行？

Question

我有一个简单的应用程序，我想将它部署到 GAE 标准或灵活的环境中，它需要生成简单的音频文件。

我有使用PySoundfile在本地（在开发服务器上）运行良好的代码，但是libsndfile在部署应用程序时我遇到了底层错误。

Traceback (most recent call last):

  File "/env/local/lib/python2.7/site-packages/gunicorn/arbiter.py", line 578, in spawn_worker

    worker.init_process()

  File "/env/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 126, in init_process

    self.load_wsgi()

  File "/env/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 135, in load_wsgi

    self.wsgi = self.app.wsgi()

  File "/env/local/lib/python2.7/site-packages/gunicorn/app/base.py", line 67, in wsgi

    self.callable = self.load()

  File "/env/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 65, in load

    return self.load_wsgiapp()

  File "/env/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 52, in load_wsgiapp

    return util.import_app(self.app_uri)

  File "/env/local/lib/python2.7/site-packages/gunicorn/util.py", line 352, in import_app

    __import__(module)

  File "/home/vmagent/app/main.py", line 3, in <module>

    import tonegen

  File "/home/vmagent/app/tonegen.py", line 4, in <module>

    import soundfile as sf

  File "/env/local/lib/python2.7/site-packages/soundfile.py", line 267, in <module>

    _snd = _ffi.dlopen('sndfile')

  File "/env/local/lib/python2.7/site-packages/cffi/api.py", line 141, in dlopen

    lib, function_cache = _make_ffi_library(self, name, flags)

  File "/env/local/lib/python2.7/site-packages/cffi/api.py", line 802, in _make_ffi_library

    backendlib = _load_backend_lib(backend, libname, flags)

  File "/env/local/lib/python2.7/site-packages/cffi/api.py", line 797, in _load_backend_lib

    raise OSError(msg)

OSError: ctypes.util.find_library() did not manage to locate a library called 'sndfile'

我也试过wave没有成功。

Answer 1

在灵活的环境中，您可以尝试构建和使用自定义运行时，您可以在其中添加非 Python 依赖项，例如 OS 库（libsndfile在您的情况下以及您可能需要的任何其他内容）。与如何在 Google App Engine 柔性环境中配置 oracle jdk 中的答案基本相同。