Is it possible to install github repository on Google Cloud Composer

Question

As title, we can set pypi packages in requirements.txt file and use the command

gcloud beta composer environments update env_name --update-pypi-packages-from-file requirements.txt --location location

to update the cloud composer environment.

But does it support to install custom github repo in requirements.txt? I've tried adding the link like:

pkg_name @ git+ssh://[email protected]/my_account/pkg_repo.git#master

and it doesn't work.

Thanks!

Update: I have a workaround solution is to put the library into plugins. But the best strategy in our case is to install a package from github I think.

Answer 1

No it does not support to install custom libraries this way. In docs here you can see how --update-pypi-packages is intended to be used only with libraries which are in the Python Package Index:

You can install Python dependencies from the Python Package Index through the Google Cloud Platform Console or by making a partial update request to the environment using the gcloud command-line tool.

You have three alternative options:

Install a local Python library.

Use the plugins feature.

Use the KubernetesPodOperator.

Installing using a local Python library is quite straightforward: 1. In your composer GCS bucket, in the dags folder create a dependencies folder and inside there add your library modules (don't forget to add the necessary "init.py" file(s)). 2. Then simply do something like:

from dependencies import your_module