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How to use Boto3 to delete a trigger from AWS Data Catalog?
Problem Statement − Use boto3 library in Python to delete a trigger that is available in your account.
Example − Delete a trigger ‘test’ from your account.
Approach/Algorithm to solve this problem
Step 1 − Import boto3 and botocore exceptions to handle exceptions.
Step 2 − Pass the parameter trigger_name that should be deleted from AWS Glue Catalog.
Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.
Step 4 − Create an AWS client for glue.
Step 5 − Call delete_trigger and pass the trigger_name as Name parameter.
Step 6 − It will delete the trigger and return the response metadata. Please note, if trigger is not found in AWS Data Catalog, it doesn’t throw any exception.
Step 7 − Handle the generic exception if something went wrong while checking the job.
Example
Use the following code to delete a trigger listed in user account −
import boto3
from botocore.exceptions import ClientError
def delete_a_trigger(trigger_name):
session = boto3.session.Session()
glue_client = session.client('glue')
try:
response = glue_client.delete_trigger(Name = trigger_name)
return response
except ClientError as e:
raise Exception( "boto3 client error in delete_a_trigger: " + e.__str__())
except Exception as e:
raise Exception( "Unexpected error in delete_a_trigger: " + e.__str__())
print(delete_a_trigger("test"))Output
{'Name': 'test, 'ResponseMetadata': {'RequestId': '75abe5e2-………………….-
59a9bc617e0f', 'HTTPStatusCode': 200, 'HTTPHeaders': {'date': 'Sun, 21
Feb 2021 05:27:11 GMT', 'content-type': 'application/x-amz-json-1.1',
'content-length': '35', 'connection': 'keep-alive', 'x-amzn-requestid':
'75abe5e2-………………59a9bc617e0f'}, 'RetryAttempts': 0}}
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