json - Can't send running ec2 instance list from lambda to slack using webhook url

Question

I have a lambda function which filters out running ec2 instances and stores them in an array, then it is sent as a payload to the slack channel. The problem is when I run the function it will not send the list but the print command will list it out on output.

import json
import boto3
import logging
import os
import urllib3
import urllib.parse

#from urlparse import parse_qs
from boto3 import resource

ec2 = boto3.resource('ec2')
region = 'us-east-1'



def lambda_handler(event, context):
 
    ec2 = boto3.resource('ec2', region)
    url = "https://hooks.slack.com/services/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"
    text = "hi"
    filters = [
        {
            'Name': 'instance-state-name', 
            'Values': ['running']
        }
    ]

    instances = ec2.instances.filter(Filters = filters)

    RunningInstances = []

    for instance in instances:
        RunningInstances.append(instance.id)

    instanceList = json.dumps(RunningInstances)
    
 
                                       #List out running ec2 instances

  
    print(instanceList) 
    http = urllib3.PoolManager()
  
   
    r = http.request("POST",
                  "https://hooks.slack.com/services/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",
                 body = json.dumps(instanceList),
                 headers = {"Content-Type":"application/json"})
                 ```

                 

Answer 1

等待大神答复