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Parse ARNs using Python

Project description

arnparse

Parse ARNs using Python

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Motivation

Sometimes, you want to parse an Amazon Resource Name (ARN) into its components to get some useful information from the ARN (e.g. AWS region, account ID, etc).

You can find documentation on ARNs and their components here: https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html

Installation

pip install arnparse

Examples

S3 Object

from arnparse import arnparse

arn = arnparse('arn:aws:s3:::my_corporate_bucket/exampleobject.png')

assert arn.partition == 'aws'
assert arn.service == 's3'
assert arn.region is None
assert arn.account_id is None
assert arn.resource_type is None
assert arn.resource == 'my_corporate_bucket/exampleobject.png'

VPC

from arnparse import arnparse

arn = arnparse('arn:aws:ec2:us-east-1:123456789012:vpc/vpc-fd580e98')

assert arn.partition == 'aws'
assert arn.service == 'ec2'
assert arn.region == 'us-east-1'
assert arn.account_id == '123456789012'
assert arn.resource_type == 'vpc'
assert arn.resource == 'vpc-fd580e98'

CloudWatch Alarm

from arnparse import arnparse

arn = arnparse('arn:aws:cloudwatch:us-east-1:123456789012:alarm:MyAlarmName')

assert arn.partition == 'aws'
assert arn.service == 'cloudwatch'
assert arn.region == 'us-east-1'
assert arn.account_id == '123456789012'
assert arn.resource_type == 'alarm'
assert arn.resource == 'MyAlarmName'

SNS Topic

from arnparse import arnparse

arn = arnparse('arn:aws:sns:*:123456789012:my_corporate_topic')

assert arn.partition == 'aws'
assert arn.service == 'sns'
assert arn.region == '*'
assert arn.account_id == '123456789012'
assert arn.resource_type is None
assert arn.resource == 'my_corporate_topic'

API Gateway

from arnparse import arnparse

arn = arnparse('arn:aws:apigateway:us-east-1::a123456789012bc3de45678901f23a45:/test/mydemoresource/*')

assert arn.partition == 'aws'
assert arn.service == 'apigateway'
assert arn.region == 'us-east-1'
assert arn.account_id is None
assert arn.resource_type is None
assert arn.resource == 'a123456789012bc3de45678901f23a45:/test/mydemoresource/*'

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