JenniferYingyiWu2020 opened a new issue #12583:
URL: https://github.com/apache/airflow/issues/12583
Hi,
I have read the project codes of "airflow", and it is said that "Use Airflow
to author workflows as directed acyclic graphs (DAGs) of tasks". Now, I have a
task to read the following json string which will be used to construct a DAG. I
have been told to use the "DAG engine", so could you pls tell me whether your
codes can implement my function? Also, how to build a DAG object from Json
using "your DAG engine"? Thanks!
"
{
"type": "Invocation",
"arguments": {
"DEFAULT_EXPRESSION_IMAGE": {
"type": "Invocation",
"arguments": {
"id": "LC08/01/T1/LC08_121031_20181019"
},
"functionName": "Image.load"
},
"B4": {
"type": "Invocation",
"arguments": {
"input": {
"type": "Invocation",
"arguments": {
"id": "LC08/01/T1/LC08_121031_20181019"
},
"functionName": "Image.load"
},
"bandSelectors": "B4"
},
"functionName": "Image.select"
},
"B5": {
"type": "Invocation",
"arguments": {
"input": {
"type": "Invocation",
"arguments": {
"id": "LC08/01/T1/LC08_121031_20181019"
},
"functionName": "Image.load"
},
"bandSelectors": "B5"
},
"functionName": "Image.select"
}
},
"function": {
"type": "Invocation",
"arguments": {
"expression": "(B5-B4)/(B5+B4)",
"argName": "DEFAULT_EXPRESSION_IMAGE",
"vars": [
"DEFAULT_EXPRESSION_IMAGE",
"B4",
"B5"
]
},
"functionName": "Image.parseExpression"
}
}
"
Best Regards,
Jennifer Wu
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
