cffi.api.CDefError: 'point_conversion_form_t' has no values explicitly defined: refusing to guess which integer type it is meant to be (unsigned/signed, int/long)

[devent]

Hello, I try to install Graphite/Carbon in a Docker Container.
The installation works fine, but if I start Carbon I get the following error.
Any help is appreciated. Regards.

Error:

cffi.api.CDefError: 'point_conversion_form_t' has no values explicitly defined: refusing to guess which integer type it is meant to be (unsigned/signed, int/long)
Traceback (most recent call last):
  File "/opt/graphite/bin/carbon-cache.py", line 32, in <module>
    run_twistd_plugin(__file__)
  File "/opt/graphite/lib/carbon/util.py", line 60, in run_twistd_plugin
    from twisted.internet import epollreactor
  File "/usr/lib/python2.7/dist-packages/twisted/internet/epollreactor.py", line 24, in <module>
    from twisted.internet import posixbase
  File "/usr/lib/python2.7/dist-packages/twisted/internet/posixbase.py", line 24, in <module>
    from twisted.internet import error, udp, tcp
  File "/usr/lib/python2.7/dist-packages/twisted/internet/tcp.py", line 29, in <module>
    from twisted.internet._newtls import (
  File "/usr/lib/python2.7/dist-packages/twisted/internet/_newtls.py", line 21, in <module>
    from twisted.protocols.tls import TLSMemoryBIOFactory, TLSMemoryBIOProtocol
  File "/usr/lib/python2.7/dist-packages/twisted/protocols/tls.py", line 41, in <module>
    from OpenSSL.SSL import Error, ZeroReturnError, WantReadError
  File "/usr/lib/python2.7/dist-packages/OpenSSL/__init__.py", line 8, in <module>
    from OpenSSL import rand, crypto, SSL
  File "/usr/lib/python2.7/dist-packages/OpenSSL/rand.py", line 11, in <module>
    from OpenSSL._util import (
  File "/usr/lib/python2.7/dist-packages/OpenSSL/_util.py", line 4, in <module>
    binding = Binding()
  File "/usr/lib/python2.7/dist-packages/cryptography/hazmat/bindings/openssl/binding.py", line 89, in __init__
    self._ensure_ffi_initialized()
  File "/usr/lib/python2.7/dist-packages/cryptography/hazmat/bindings/openssl/binding.py", line 113, in _ensure_ffi_initialized
    libraries=libraries,
  File "/usr/lib/python2.7/dist-packages/cryptography/hazmat/bindings/utils.py", line 80, in build_ffi
    extra_link_args=extra_link_args,
  File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 437, in verify
    lib = self.verifier.load_library()
  File "/usr/local/lib/python2.7/dist-packages/cffi/verifier.py", line 114, in load_library
    return self._load_library()
  File "/usr/local/lib/python2.7/dist-packages/cffi/verifier.py", line 225, in _load_library
    return self._vengine.load_library()
  File "/usr/local/lib/python2.7/dist-packages/cffi/vengine_cpy.py", line 174, in load_library
    lst = list(map(self.ffi._get_cached_btype, lst))
  File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 409, in _get_cached_btype
    BType = type.get_cached_btype(self, finishlist)
  File "/usr/local/lib/python2.7/dist-packages/cffi/model.py", line 61, in get_cached_btype
    BType = self.build_backend_type(ffi, finishlist)
  File "/usr/local/lib/python2.7/dist-packages/cffi/model.py", line 507, in build_backend_type
    base_btype = self.build_baseinttype(ffi, finishlist)
  File "/usr/local/lib/python2.7/dist-packages/cffi/model.py", line 525, in build_baseinttype
    % self._get_c_name())
cffi.api.CDefError: 'point_conversion_form_t' has no values explicitly defined: refusing to guess which integer type it is meant to be (unsigned/signed, int/long)

Partial docker:

FROM debian:8.6

# Configuration variables.
ENV DEBIAN_FRONTEND noninteractive
ENV GRAPHITE_VERSION master
ENV GUNICORN_VERSION 19.6.0

# Install tools and xmlstarlet to configure the Tomcat XML files.
RUN set -x \
    && apt-get update --quiet \
    && apt-get install --quiet --yes --no-install-recommends \
        # python
        gcc \
        python-dev \
        python-pip \
        python-ldap \
        python-django \
        python-twisted \
        python-django-tagging \
        python-simplejson \
        python-memcache \
        python-pysqlite2 \
        python-tz \
        # postgresql
        libpq-dev python-psycopg2 \
        # supervisor
        supervisor \
        # nginx
        nginx-light \
    && rm -rf /var/lib/apt/lists/*

# Install cairocffi.
RUN set -x \
    && pip install cairocffi

# Install whisper.
RUN set -x \
    && export PYTHONPATH="/opt/graphite/lib/:/opt/graphite/webapp/" \
    && pip install "https://github.com/graphite-project/whisper/tarball/master"

# Install carbon.
RUN set -x \
    && export PYTHONPATH="/opt/graphite/lib/:/opt/graphite/webapp/" \
    && pip install "https://github.com/graphite-project/carbon/tarball/master"

# Install graphine.
RUN set -x \
    && export PYTHONPATH="/opt/graphite/lib/:/opt/graphite/webapp/" \
    && pip install "https://github.com/graphite-project/graphite-web/tarball/master"

# Install gunicorn.
RUN set -x \
    && pip install gunicorn==$GUNICORN_VERSION

[obfuscurity]

This is not a Carbon issue per se, but an upstream problem with pyOpenSSL. See pyca/pyopenssl#392 and pyca/cryptography#2501. You should be able to get around this by explicitly removing python-openssl (which IIRC is installed by something unrelated) or forcing it to use a newer version with the pyca fix.

[jack17529]

I too had this error , is there any work around , i am not able to do so.

[deniszh]

@jack17529 : try to add

# Install pyopenssl
RUN set -x \
    && pip install pyopenssl

just before # Install cairocffi.

[devent]

You can also just leave out python-twisted.
python-twisted pulls in python-openssl, which will break pyOpenSSL.
My Docker file was based on an outdated Graphite docker file from someone else.

[deniszh]

But 'python-twisted` is required for carbon.

[devent]

Here is my Dockerfile for reference. Works 100%. :)
https://github.com/devent/graphite_carbon_docker/blob/master/Dockerfile