api: accept workflow specifications instead of toplevel+workflow name

[diegodelemos]

Signed-off-by: Diego Rodriguez diego.rodriguez@cern.ch

[diegodelemos]

From external repo or even from CAP (see yadage support)

$ curl -i -H 'Content-Type: application/json' -XPOST \
       --data '{"toplevel": "github:reanahub/reana-demo-helloworld", "workflow": "helloworld.yaml", "nparallel": "100", "preset_pars": {"name": "John Doe", "delay": "2"}}' \
       "http://192.168.99.100:32615/api/yadage/remote?organization=default&user=00000000-0000-0000-0000-000000000000"

From specification (built in reana-client using yadage-scehmas loader see PR)

$ curl -i -H 'Content-Type: application/json' -XPOST --data @helloworld.json \
       "http://192.168.99.100:32615/api/yadage/spec?organization=default&user=00000000-0000-0000-0000-000000000000"

helloworld.json

{
    "parameters": {
        "name": "World",
        "delay": 2
    },
    "workflow_spec": {
        "stages":[
            {
                "dependencies":{
                    "dependency_type":"jsonpath_ready",
                    "expressions":[
                        "init"
                    ]
                },
                "name":"helloworld",
                "scheduler":{
                    "parameters":[
                        {
                            "key":"delay",
                            "value":{
                                "expression_type":"stage-output-selector",
                                "output":"delay",
                                "stages":"init",
                                "unwrap":"true"
                            }
                        },
                        {
                            "key":"outputfile",
                            "value":"{workdir}/greetings.txt"
                        },
                        {
                            "key":"name",
                            "value":{
                                "expression_type":"stage-output-selector",
                                "output":"name",
                                "stages":"init",
                                "unwrap":"true"
                            }
                        }
                    ],
                    "scheduler_type": "singlestep-stage",
                    "step":{
                        "environment":{
                            "env":{

                            },
                            "environment_type":"docker-encapsulated",
                            "envscript":"",
                            "image":"reanahub/reana-demo-helloworld",
                            "imagetag":"latest",
                            "resources":[

                            ]
                        },
                        "process":{
                            "cmd":"python helloworld.py --name {name} --sleeptime {delay} --outputfile {outputfile}",
                            "process_type":"string-interpolated-cmd"
                        },
                        "publisher":{
                            "outputmap":{
                                "outputfile":"outputfile"
                            },
                            "publisher_type":"frompar-pub"
                        }
                    }
                }
            }
        ]
    }
}

ping @tiborsimko