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##############################################################################
# Copyright (c) 2018 Huawei Technologies Co.,Ltd. and others
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from conductor import conductor
import json
class WorkflowMgr(object):
def __init__(self, serverAddr):
self._serverAddr = serverAddr + '/api'
self._metaDataClient = conductor.MetadataClient(self._serverAddr)
self._workflowClient = conductor.WorkflowClient(self._serverAddr)
self._tasksDefined = False
self._workflowDefined = False
self._workflowName = ""
def setTaskDef(self, taskJson):
jsonObj = json.loads(taskJson)
print "define tasks:\n", taskJson
for (k, v) in jsonObj.items():
self._metaDataClient.registerTaskDefs(v)
self._tasksDefined = True
def setWorkflowDef(self, workflowJson):
jsonObj = json.loads(workflowJson)
print "define workflow:\n", workflowJson
try:
self._metaDataClient.createWorkflowDef(jsonObj)
except Exception as e:
print e
self._workflowName = jsonObj['name']
self._workflowDefined = True
def startWorkflow(self, param={}):
workflowId = ''
if not self._tasksDefined:
print "error: please define the task at first\n"
elif not self._workflowDefined:
print "error: please define the workflow at first\n"
else:
workflowId = self._workflowClient.startWorkflow(
self._workflowName, param)
return workflowId
def setTaskDefFromFile(self, taskFilePath):
with open(taskFilePath, 'r') as f:
self.setTaskDef(f.read())
def setWorkflowFromFile(self, workflowFilePath):
with open(workflowFilePath, 'r') as f:
self.setWorkflowDef(f.read())
# test demo
def main():
serverAddr = "http://192.168.199.131:8080"
wfMgr = WorkflowMgr(serverAddr)
wfMgr.setTaskDefFromFile('mock_tasks.json')
wfMgr.setWorkflowFromFile('mock_workflow.json')
inputParam = {'input': 'fake'}
wfMgr.startWorkflow(inputParam)
if __name__ == "__main__":
main()
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