CODEWITHSUNDEEP
pythonpython-2.7amazon-web-servicesaws-lambdaboto3
Kittystone
Kittystone

Reputation: 671

how to write my AWS lambda function?

I am new to AWS lambda function and i am trying to add my existing code to AWS lambda. My existing code looks like :

import boto3
import slack
import slack.chat
import time
import itertools
from slacker import Slacker

ACCESS_KEY = ""
SECRET_KEY = ""
slack.api_token = ""
slack_channel = "#my_test_channel"

def gather_info_ansible():
           .
           .

def call_snapshot_creater(data):
           .
           . 
def call_snapshot_destroyer(data):
           .
           .
if __name__ == '__main__':
    print "Calling Ansible Box Gather detail Method first!"
    ansible_box_info = gather_info_ansible()

    print "Now Calling the Destroyer of SNAPSHOT!! BEHOLD THIS IS HELL!!"
    call_snapshot_destroyer(ansible_box_info)

    #mapping = {i[0]: [i[1], i[2]] for i in data}
    print "Now Calling the Snapshot Creater!"
    call_snapshot_creater(ansible_box_info)

Now i try to create a lambda function from scratch on AWS Console as follows (a hello world)

from __future__ import print_function

import json


print('Loading function')


def lambda_handler(event, context):
    #print("Received event: " + json.dumps(event, indent=2))
    print("value1 = " + event['key1'])
    print("value2 = " + event['key2'])
    print("value3 = " + event['key3'])
    print("test")
    return event['key1']  # Echo back the first key value
    #raise Exception('Something went wrong')

and the sample test event on AWS console is :

{
  "key3": "value3",
  "key2": "value2",
  "key1": "value1"
}

I am really not sure how to put my code in AWS lambda coz if i even add the modules in lambda console and run it it throws me error :

Unable to import module 'lambda_function': No module named slack

How to solve this and import my code in lambda?

Upvotes: 1

Views: 2907

Answers (2)

Mohammad Yusuf
Mohammad Yusuf

Reputation: 17044

You have to make a zipped package consisting of your python script containing the lambda function and all the modules that you are importing in the python script. Upload the zipped package on aws.

Whatever module you want to import, you have to include that module in the zip package. Only then the import statements will work.

For example your zip package should consist of

test_package.zip
|-test.py (script containing the lambda_handler function)
|-boto3(module folder)
|-slack(module folder)
|-slacker(module folder)

Upvotes: 3

Vladimir Mukhin
Vladimir Mukhin

Reputation: 565

You receive an error because AWS lambda does not have any information about a module called slack.

A module is a set of .py files that are stored somewhere on a computer. In case of lambda, you should import all your libraries by creating a deployment package.

Here is an another question that describes similar case and provides several solutions: AWS Lambda questions

Upvotes: 1

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