How to use Boto3 library in Python to get the details of a crawler?

Example: Get the details of a crawler, crawler_for_s3_file_job.

Approach/Algorithm to solve this problem

Step 1 − Import boto3 and botocore exceptions to handle exceptions.

Step 2 − crawler_name is the mandatory parameter. It is a list so user can send multiple crawlers name at a time to fetch details.

Step 3 − Create an AWS session using boto3 library. Make sure the 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 − Now use the batch_get_crawlers function and pass the crawler_names.

Step 6 − It returns the metadata of crawlers.

Step 7 − Handle the generic exception if something went wrong while checking the job.

Example

Use the following code to fetch the details of a crawler −

import boto3
from botocore.exceptions import ClientError

def get_crawler_details(crawler_names:list)
   session = boto3.session.Session()
   glue_client = session.client('glue')
   try:
      crawler_details = glue_client.batch_get_crawlers(CrawlerNames= crawler_names)
      return crawler_details
   except ClientError as e:
      raise Exception( "boto3 client error in get_crawler_details: " + e.__str__())
   except Exception as e:
      raise Exception( "Unexpected error in get_crawler_details: " + e.__str__())

print(get_crawler_details("[crawler_for_s3_file_job]"))