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import boto3        # AWS SDK for Python
import os

from base64 import b64decode

# Retrieve environment variables
encrypted_environment_variable_a = os.environ['a']
encrypted_environment_variable_b = os.environ['b']

# KMS Client

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# Verify the Slack Signature and Verification token
def verify(raw_body, token, headers):
    
    try:
        # Define variables
        version_no = "v0"
        
        # Verify Signing Secret
        slack_signature = headers['X-Slack-Signature']
        slack_request_timestamp = headers['X-Slack-Request-Timestamp']

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{
  "body": "payload=%7B%22type%22%3A%22interactive_message%22%2C%22actions%22%3A%5B%7B%22name%22...",
  "headers": {
    "Accept": "application/json,*/*",
    ...
    "Content-Type": "application/x-www-form-urlencoded",
    "X-Slack-Request-Timestamp": "1537...",
    "X-Slack-Signature": "v0=..."
    ...
  },

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# Post to Slack
def post_to_slack(message, instance_info):
    
    # Slack users
        # cyoung = @cyoung
        # user_2 = @user_2
        
    owner_dict = {
                    "cyoung" : "xxxxxxxxx",
                    "user_2" : "zzzzzzzzz"

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# RDS instance fact finder
def rds_fact_and_candidate_finder(session, rds_agelimit, rds_running_agelimit, reserved_til, nowdatetime):
    resource_type = 'RDS'

    client = session.client('rds')
    db_instances = client.describe_db_instances()

    for inst in db_instances['DBInstances']:
        start_time = None
        # Get instance owner & static value from tags

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# EC2 instance candidate finder
def ec2_candidate_finder(response, agelimit, reserved_til, nowdatetime):
    resource_type = 'EC2'
    for instance in (response['Reservations']):
        InstanceId = (instance['Instances'][0]['InstanceId'])
        launch_time = (instance['Instances'][0]['LaunchTime'])
        tags = (instance['Instances'][0]['Tags'])
    
    
        inst_owner = None