[英]pass arguments to Cloud Workflows using Python
I am developing a python script allowing me to trigger a cloud workflow service.我正在开发一个 python 脚本,允许我触发云工作流服务。
In the script, I pass some arguments when I call the在脚本中,当我调用
projects/{project}/locations/{location}/workflows/{workflow}/executions
endpoint. projects/{project}/locations/{location}/workflows/{workflow}/executions
端点。
But I do not find how to use these args in the YAML.但我没有找到如何在 YAML 中使用这些参数。
requirements.txt要求.txt
google-cloud-workflows>=0.1.0
main.py主文件
from google.cloud.workflows.executions_v1beta.services.executions import ExecutionsClient
from google.cloud.workflows.executions_v1beta.types import CreateExecutionRequest, Execution
import json
def callWorkflow(request):
project = "projectid"
location = "us-central1"
workflow = "workflowname"
arguments = {"first": "Hello", "second":"world"}
parent = "projects/{}/locations/{}/workflows/{}".format(project, location, workflow)
execution = Execution(argument = json.dumps(arguments))
client = ExecutionsClient()
response = None
# Try running a workflow:
try:
response = client.create_execution( parent=parent, execution=execution)
except:
return "Error occurred when triggering workflow execution", 500
return "OK", 200
When deploying this as a Cloud Function, ensure that the Service Account of the Function has Workflows.Invoker
role set in IAM (required to trigger a workflow execution).将其部署为云函数时,请确保函数的服务帐户在 IAM 中设置了
Workflows.Invoker
角色(触发工作流执行所需)。
Once you deploy and run the function above, the arguments can be accessed in the following way in a workflow (example also available Docs ):部署并运行上面的函数后,可以在工作流中通过以下方式访问参数(示例也可用Docs ):
main:
params: [args]
steps:
- firstStep:
return: ${args.first + " " + args.second}
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