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codeproject / CodeProject.AI-Server

CodeProject.AI Server is a self contained service that software developers can include in, and distribute with, their applications in order to augment their apps with the power of AI.
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ObjectDetectionCoral stops working when restarting the docker container. #101

Open mikegleasonjr opened 2 months ago

mikegleasonjr commented 2 months ago

Area of Concern

Describe the bug

  1. I am running a docker container with the codeproject/ai-server image with 2 volumes (so that I can restart it without having to reinstall/reconfigure everything):
    • /etc/codeproject/ai
    • /app/modules
  2. I installed the Object Detection (Coral) module, which worked fine with my TPU. I called the API and verified that everything was working.
  3. I stopped the container
  4. I started back the container
  5. The module now has this error: objectdetection_coral_adapter.py: An exception occurred initialising the module: libedgetpu.so.1: cannot open shared object file: No such file or dir

Expected behavior The module restarts properly in the docker container.

I know what the problem actually is: In ObjectDetectionCoral/install.sh, there is a line to copy the shared library in /usr/lib/x86_64-linux-gnu/ upon module installation:

cp "${moduleDirPath}/edgetpu_runtime/${edgetpu_folder}/k8/libedgetpu.so.1.0" "/usr/lib/x86_64-linux-gnu/libedgetpu.so.1.0"

Obvisouly when restarting the container, this change is lost since I do not mount /usr/lib/x86_64-linux-gnu/ as a volume to be persistent across "reboots".

I don't know if modules have a startup hook where these steps of copying the shared object and running of ldconfig could be done there?

Screenshots N/A

Your System (please complete the following information):

Additional context See Expected behavior

matthewDDennis commented 2 months ago

How are you starting the Docker container?

mikegleasonjr commented 2 months ago

Hi @matthewDDennis, thanks for the help. It is my feeling that the bug report wasn't fully understood though. The bug is actually known and described in the "Expected behavior" section (at least I tried to explain it). This isn't about Docker not restarting the container.

Please feel free to ask questions if it is still misunderstood 🙏🏻

mikegleasonjr commented 2 months ago

Maybe the ObjectDetectionCoral module should redo some steps it does upon installation in the initialise phase of the module: https://www.codeproject.com/ai/docs/devguide/module_examples/add_python_module.html#writing-the-module

It copies files into the host at the location: /usr/lib/x86_64-linux-gnu/. Those files are obviously lost when restarting the container.

There is no mention about mounting other volumes other than the settings/module folders in the documentation: https://www.codeproject.com/ai/docs/install/running_in_docker.html#advanced-docker-launch-settings-saved-outside-of-the-container