This is a proof of concept web service for the Common Workflow Language. It works with any cwl-runner that supports the CWL standard command line interface: http://www.commonwl.org/draft-3/CommandLineTool.html#Executing_CWL_documents_as_scripts

Theory of operation:

• Accept job order via HTTP POST, create job and redirect to job URL
• Client can poll for job status
• Client can get streaming logs (stderr of cwl-runner)

Installation:

python setup.py install

Run standalone server:

cwl-server

Run a job, get status, get log:

$ echo '{"message": "It works"}' | curl -L -X POST -d@- http://localhost:5000/run?wf=https://raw.githubusercontent.com/common-workflow-language/common-workflow-language/master/draft-3/examples/1st-tool.cwl
{
    "state": "Running",
    "run": "https://raw.githubusercontent.com/common-workflow-language/common-workflow-language/master/draft-3/examples/1st-tool.cwl",
    "log": "http://localhost:5000/jobs/0/log",
    "input": {
        "message": "It works"
    },
    "output": null,
    "id": "http://localhost:5000/jobs/0"
}
$ curl http://localhost:5000/jobs/0
{
    "state": "Success",
    "run": "https://raw.githubusercontent.com/common-workflow-language/common-workflow-language/master/draft-3/examples/1st-tool.cwl",
    "log": "http://localhost:5000/jobs/0/log",
    "input": {
        "message": "It works"
    },
    "output": {},
    "id": "http://localhost:5000/jobs/0"
}
$ curl http://localhost:5000/jobs/0/log
cwl-runner 1.0.20160518201549
[job 1st-tool.cwl] /tmp/tmpKcoc_I$ echo \
    'It works'
It works
Final process status is success