Service_identity module missing

[James-Crean]

When doing a clean/fresh install it seems that Linux (and sometimes Mac) report that twisted can't find the service_identity module.

Doing pip install service_identity fixes the issue, but we should make sure that it is included during the set up. Is it missing from a dependency list somewhere?

[scottwittenburg]

So I did a little looking and it seems the version of VTK we have picked in the uv-cdat/conda-recipes project is a SHA from just after we moved to wslink, and just before that (and all other) ThirdParty modules were removed from VTK. When we move forward to a new version of VTK, we will likely need a requirements.txt for the Python part of this project in order to bring in those modules which used to live in the VTK ThirdParty directory (e.g. Twisted, Autobahn) , and at that point, it will be a good time to add the sevice_identity module as a dependency.

I have created a PR over on the wslink repo which could make this a titch easier on the vcs-js end.

But we can leave this open until the issue is resolved to the satisfaction of all.

[doutriaux1]

@scottwittenburg the biggest issue I foresee with this, is that we are using OpenGL1 and it is removed from vtk... So we can't even build master any longer... Once this is fixed we can review this issue.

[scottwittenburg]

Sounds good @doutriaux1, and if we need to do something more quickly we can always just add a requirements.txt to this project and only put service_identity in it for the time being.

[James-Crean]

@scottwittenburg I like the idea of adding a requirements.txt for now. Since we are trying to get users to install and try vcdat out, I want to avoid problems that might give them a bad first impression.

@doutriaux1 Is a requirements file alright with you until a formal fix is in place?

[James-Crean]

@scottwittenburg, Where are we on this issue?

[scottwittenburg]

Well, I haven't done anything since my last comments. But this doesn't actually break anything, so maybe it boils down to: "what are we willing to do in order to avoid that warning getting printed?" I can add a requirements.txt, but this module isn't technically a requirement. Once we can use a new VTK, then we will need a requirements file, because there will then be python modules we require which VTK is no longer bringing.

I guess I'm kind of on the fence. I can add the file, but it seems a little weird.

[James-Crean]

If you don't believe it makes sense then we don't need to. I just double checked and a fresh install of vcdat gives the warning, but does not cause the application to fail. I will leave it open for now, and when the new VTK comes out we can revisit this then. That sound alright to you?

[scottwittenburg]

Yes, I think that makes sense, thanks.

[scottwittenburg]

@doutriaux1 I'm testing this project out with my context2d-alpha-release branch, and noticed that we have finally come to the point of needing to address this issue. I'm setting up a requirements.txt to note the python modules needed. The first one I added was:

wslink[security]

That covers the issue @James-Crean first reported here and gets me some modules like twisted and autobahn, etc... that used to come with VTK. Now I have hit another import error:

Program stderr: Traceback (most recent call last):
  File "/data/scott/projects/uvcdat/vcs-js/scripts/vcs-test-server.py", line 14, in <module>
    from vcs_server.Visualizer import Visualizer
  File "/data/scott/projects/uvcdat/vcs-js/vcs_server/Visualizer.py", line 13, in <module>
    import compute_graph
ImportError: No module named compute_graph

Do you know where I can get that module? There are a lot of projects under cdat, two of them look promising: compute_graph and cdat_compute_graph.

ping @danlipsa @aashish24

[James-Crean]

Compute graph is the base package. Cdat compute graph extends the functionality so that cdat computations can be performed with it. Most likely you will need both.

On Thu, Oct 25, 2018, 8:20 AM Scott Wittenburg notifications@github.com wrote:

@doutriaux1 https://github.com/doutriaux1 I'm testing this project out with my context2d-alpha-release branch, and noticed that we have finally come to the point of needing to address this issue. I'm setting up a requirements.txt to note the python modules needed. The first one I added was:

wslink[security]

That covers the issue @James-Crean https://github.com/James-Crean first reported here and gets me some modules like twisted and autobahn, etc... that used to come with VTK. Now I have hit another import error:

Program stderr: Traceback (most recent call last): File "/data/scott/projects/uvcdat/vcs-js/scripts/vcs-test-server.py", line 14, in from vcs_server.Visualizer import Visualizer File "/data/scott/projects/uvcdat/vcs-js/vcs_server/Visualizer.py", line 13, in import compute_graph ImportError: No module named compute_graph

Do you know where I can get that module? There are a lot of projects under cdat, two of them look promising: compute_graph and cdat_compute_graph.

ping @danlipsa https://github.com/danlipsa @aashish24 https://github.com/aashish24

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[doutriaux1]

should be avail via conda. but github.com/cdat/compute_graph

[scottwittenburg]

Thanks @doutriaux1 and @James-Crean for the information.