Update README.md

Author: Peter Amstutz

README

@@ -0,0 +1,54 @@
+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
+```

README.md

@@ -8,6 +8,7 @@
 import signal
 import threading
 import time
+import copy
 
 app = Flask(__name__)
 
@@ -122,6 +123,21 @@ def getlog(jobid):
         job = jobs[jobid]
     return Response(logspooler(job))
 
+@app.route("/jobs", methods=['GET'])
+def getjobs():
+    with jobs_lock:
+        jobscopy = copy.copy(jobs)
+    def spool(jc):
+        yield "["
+        first = True
+        for j in jc:
+            if first:
+                yield json.dumps(j.getstatus(), indent=4)
+                first = False
+            else:
+                yield ", "  + json.dumps(j.getstatus(), indent=4)
+        yield "]"
+    return Response(spool(jobscopy))
 
 if __name__ == "__main__":
     #app.debug = True