Working with AWS DynamoDB

import boto3 from botocore.exceptions import BotoCoreError, ClientError # Specify the region name here; set it to None to list tables from all regions # Example: 'ap-south-1' for a specific region, or None for all regions #region_name = 'us-east-1' creds = _get_creds(cred_label)['creds'] access_key = creds['username'] secret_key = creds['password'] def list_tables_in_region(dynamodb_client, region): """List tables in a given region using the provided DynamoDB client.""" paginator = dynamodb_client.get_paginator('list_tables') for page in paginator.paginate(): if page['TableNames']: for table in page['TableNames']: print(f"Region: {region}, Table: {table}") else: print(f"Region: {region}, No DynamoDB tables found.") try: if region_name: print(f"Listing DynamoDB tables from the region: {region_name}...") dynamodb_client = boto3.client( 'dynamodb', aws_access_key_id=access_key, aws_secret_access_key=secret_key, region_name=region_name ) list_tables_in_region(dynamodb_client, region_name) else: print("Listing DynamoDB tables from all regions...") ec2_client = boto3.client( 'ec2', aws_access_key_id=access_key, aws_secret_access_key=secret_key,region_name='us-east-1' ) regions = [region['RegionName'] for region in ec2_client.describe_regions()['Regions']] for region in regions: dynamodb_client = boto3.client( 'dynamodb', aws_access_key_id=access_key, aws_secret_access_key=secret_key, region_name=region_name ) list_tables_in_region(dynamodb_client, region) except ClientError as e: print(f"A client error occurred: {e.response['Error']['Message']}. Please check your AWS configuration and permissions.") except BotoCoreError as e: print(f"A BotoCore error occurred: {e}. This might be a network issue or a problem with your AWS SDK setup.") except Exception as e: print(f"An unexpected error occurred: {e}. This might be due to unexpected issues in the script or the environment.") context.proceed = False

import boto3 from botocore.exceptions import BotoCoreError, ClientError creds = _get_creds(cred_label)['creds'] access_key = creds['username'] secret_key = creds['password'] # Specify the AWS region, table name, and primary key for the DynamoDB item #region_name = 'us-east-1' # e.g., 'ap-south-1' #table_name = 'Music' # e.g., 'your_table_name' #primary_key = {"Artist": "Acme Band", "SongTitle": "Happy Day"} #primary_key = {'PrimaryKeyName': 'PrimaryKeyValue'} # Replace with your primary key and its value try: # Initialize DynamoDB client for the specified region dynamodb = boto3.resource('dynamodb', aws_access_key_id=access_key,aws_secret_access_key=secret_key,region_name=region_name) # Initialize the table table = dynamodb.Table(table_name) # Fetch the item response = table.get_item(Key=primary_key) item = response.get('Item') if item: print("Fetched item:", item) # Example logic for updating the item (if needed) # update_key = 'AttributeNameToUpdate' # Attribute you want to update # new_value = 'NewValue' # New value for the attribute # update_response = table.update_item( # Key=primary_key, # UpdateExpression=f"SET {update_key} = :val", # ExpressionAttributeValues={':val': new_value}, # ReturnValues="UPDATED_NEW" # ) # print("Updated item:", update_response) else: print("Item not found.") except ClientError as e: print(f"A client error occurred: {e.response['Error']['Message']}. Please check your AWS configuration and permissions.") except BotoCoreError as e: print(f"A BotoCore error occurred: {e}. This might be a network issue or a problem with your AWS SDK setup.") except Exception as e: print(f"An unexpected error occurred: {e}. This might be due to unexpected issues in the script or the environment.")