Build Docker Image and Urllib3 - TypeError: object of type '_TemporaryFileWrapper' has no len()

[jeevanreddyg]

Hi Team,

We are trying to build an image using docker python package and while building image, urllib3 throwing the below exception, could you please suggest a solution?

File "C:\Projects\POC\OpenTelemetry-Issue\main.py", line 8, in <module>
  image, logs = docker_client.images.build(
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\docker\models\images.py", line 298, in build
  resp = self.client.api.build(**kwargs)
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\docker\api\build.py", line 264, in build
  response = self._post(
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\docker\utils\decorators.py", line 46, in inner
  return f(self, *args, **kwargs)
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\docker\api\client.py", line 233, in _post
  return self.post(url, **self._set_request_timeout(kwargs))
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\requests\sessions.py", line 635, in post
  return self.request("POST", url, data=data, json=json, **kwargs)
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\requests\sessions.py", line 587, in request
  resp = self.send(prep, **send_kwargs)
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\requests\sessions.py", line 701, in send
  r = adapter.send(request, **kwargs)
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\requests\adapters.py", line 489, in send
  resp = conn.urlopen(
File "c:\Projects\POC\OpenTelemetry-Issue\venv\lib\site-packages\opentelemetry\instrumentation\urllib3\__init__.py", line 216, in instrumented_urlopen
  request_size = 0 if body is None else len(body)
TypeError: object of type '_TemporaryFileWrapper' has no len()

Steps to reproduce

1. pip install the below packages

opentelemetry-distro==0.36b0
opentelemetry-distro[otlp]==0.36b0
opentelemetry-instrumentation-urllib3
docker

3. Create any sample docker image (Dockerfile)

FROM ubuntu
WORKDIR /app
COPY . /app

4. Run the below code snippet (main.py)

import docker
from opentelemetry.instrumentation.urllib3 import URLLib3Instrumentor
docker_client = docker.from_env()
URLLib3Instrumentor().instrument()
image, logs = docker_client.images.build(
            path=".",
            tag="test",
            dockerfile="Dockerfile",
        )

Note: It was working fine with version 0.30 but failing with recent versions.

[shalevr]

Hi
It will be fixed in this PR:
#1399

[lzchen]

@shalevr

Can this issue be closed?

[jeevanreddyg]

Thank you, we will verify and let you know if any issues are observed.