Lambda Function to Call Database - python-3.x

Question

I am new to AWS/Lambda/Amazon Connect and trying my way around it. I have the below code to request Information from my dynamoDB table and update the table in case of a new entry. My issue is that the function only seems to run the except part and completely ignores the try. Need to understand why
CODE
import boto3
import json
from boto3.dynamodb.conditions import Key, Attr
def lambda_handler(event, context):
print("Lambda Trigger event: " + json.dumps(event))
try:
phoneNumber = event['Details']['ContactData']['CustomerEndpoint']['Address']
print("Customer Phone Number : " + phoneNumber)
dynamodb = boto3.resource('dynamodb',region_name='ap-southeast-2')
table = dynamodb.Table('data_dip_table')
response = table.get_item(Key={
'phone-number': phoneNumber
})
print("dynamodb response: " + json.dumps(response))
if 'Item' in response:
# TODO: Match Found
print("Phone number match found!")
firstName = response['Item']['first-name']
print("Customer First Name: " + firstName)
welcomeMessage = 'Welcome' + firstName + ' to Our data dip'
print("welcome message :" + welcomeMessage)
return {'welcomeMessage' : welcomeMessage }
else:
print("Phone Number was not Found")
return { 'welcomeMessage' : 'Welcome!' }
except Exception as e:
print("An Error Has Occurred")
print(e)
return {'welcomeMessage' : 'Welcome !'}
My Output is
Response:
{
"welcomeMessage": "Welcome !"
}
Request ID:
"0d9b6bf6-62f8-4385-81f0-f1d36ee489c8"
Function Logs:
START RequestId: 0d9b6bf6-62f8-4385-81f0-f1d36ee489c8 Version: $LATEST
Lambda Trigger event: {}
An Error Has Occurred
'Details'
END RequestId: 0d9b6bf6-62f8-4385-81f0-f1d36ee489c8
I have an entry for my phone number in the DD table but still get an error.Any ideas ??

Answer 1

The event object is empty. Check this line in CloudWatchLogs:
Lambda Trigger event: {}
Your code is definitely not ignoring the try block, however, on the first line of your try block, you have phoneNumber = event['Details']['ContactData']['CustomerEndpoint']['Address'] which automatically fails because your event is empty, therefore redirecting the execution to the except block.
How is this function being triggered? If you are doing it manually from AWS's Console, you will have to create a test event that contains the body that your method expects.