That installs the spline tool including all of its dependencies:

pip install spline

When you have a pipeline definition (example: pipeline.yaml) then you can run it with:

spline --definition=pipeline.yaml

Some simple examples you can see in the example folder of the project repository and also spline itself provides that file (exception: Docker tests are skipped).

The minimum structure of a pipeline definition file should look like following:

    - stage(Example):
        - tasks(ordered):
            - shell:
                script: echo "hello world!"

The output:

$ spline --definition=minimum.yaml
2017-11-18 11:24:25,875 - spline.application - Running with Python 2.7.13 (default, Jan 19 2017, 14:48:08) [GCC 6.3.0 20170118]
2017-11-18 11:24:25,883 - spline.application - Running on platform Linux-4.9.0-3-amd64-x86_64-with-debian-9.1
2017-11-18 11:24:25,884 - spline.application - Processing pipeline definition 'minimum.yaml'
2017-11-18 11:24:25,908 - spline.application - Schema validation for 'minimum.yaml' succeeded
2017-11-18 11:24:25,934 - spline.components.stage - Processing pipeline stage 'Example'
2017-11-18 11:24:25,934 - spline.components.tasks - Processing group of tasks
2017-11-18 11:24:25,934 - spline.components.tasks - Processing Bash code: start
2017-11-18 11:24:25,942 - spline.components.bash - Running script /tmp/pipeline-script-D3N3F9.sh
2017-11-18 11:24:25,948 - spline.components.tasks -  | hello world!
2017-11-18 11:24:25,949 - spline.components.tasks -  |
2017-11-18 11:24:25,950 - spline.components.bash - Exit code has been 0
2017-11-18 11:24:25,950 - spline.components.tasks - Processing Bash code: finished


git clone https://github.com/Nachtfeuer/pipeline.git
cd pipeline
# OR tox -e py35 OR tox -e py36 (see tox.ini)
tox -e py27

For the purpose to test a specific Python version that does not exist on your system you can choose one of following commands:

spline --definition=pipeline.yaml --matrix-tags=py27
spline --definition=pipeline.yaml --matrix-tags=py33
spline --definition=pipeline.yaml --matrix-tags=py34
spline --definition=pipeline.yaml --matrix-tags=py35
spline --definition=pipeline.yaml --matrix-tags=py36
spline --definition=pipeline.yaml --matrix-tags=pypy
spline --definition=pipeline.yaml --matrix-tags=pypy3

If you leave away those tags it will run for all Python versions. A special note on Python 3.6.x: I have provided two ways to deal with it:

  • init_py36_compile: A concrete package is downloaded and built. You have to rename it to init_py36 to use it (rename the other).
  • init_py36: It currently download ready made CentOS 7 packages; you save time with it.

The init_py36 is the name that is constructed via the matrix so ensure you have the one you prefer.