auto_run_simple.sh

\#!/bin/bash

###
# This is a bash script that automatically creates a NODE.JS dummy function straight to the configured aws region
#
# This script requires awscli and others in order to function properly
#
# To invoke this function and use it:
# $ bash auto_run_simple.sh 
# $ ./auto_run_simple
#
###


##
# program title
echo "_________________________________________"
echo "AWS - Automatic [SIMPLIFIED] Dummy Lambda Function"
echo "written by sebistj, 27/01/23"
echo "last update, 30/01/23"
echo "_________________________________________"



# get lambda list current list
echo "Lambda functions list"
# aws lambda list-functions
# aws lambda list-functions --region ap-southeast-1

# get roles list
echo "role list"
# aws iam list-roles

# possibly grep from the two list to check if using the param_role or param_name is okay


# current time in name
s_current_time=$(date +"%T" | tr : -)
s_current_day=$(date +"%A")
s_datetime="$s_current_time$s_current_day"
echo "s_datetime: $s_datetime"

# dynamic params
PARAM_REGION="ap-southeast-1"
PARAM_ROLE="dummy_role$s_datetime"
PARAM_NAME="dummy_function$s_datetime"
PARAM_RUNTIME="nodejs16.x"

# sample params
PARAM_RUNTIME1="nodejs"
PARAM_RUNTIME2="nodejs14.x"
PARAM_RUNTIME3="nodejs16.x"
DEFAULT_REGION="ap-southeast-1"
MUMBAI_REGION="ap-south-1"





##
# init
echo ""
echo "configuring the AWS ..."

echo ""


##
# Configure the AWS CLI to use the region
#
aws configure set default.region $PARAM_REGION
echo "configuring the connection ..."
echo "REGION is set to: $PARAM_REGION "

# error checking for connection?


##
# AWS CLI command: create role
#
#
ROLE_PATH="role_folder/test-role-policy.json"

echo "Creating role: $rolename"
echo "using role path: $ROLE_PATH"
echo "Writing rolename to variable to be used ..."
#aws iam create-role --role-name Test-Role --assume-role-policy-document file://test-role-policy.json
#aws iam create-role --role-name $PARAM_ROLE --asume-role-polic-document file://$ROLE_PATH

outputARN="ARN ouput"
pathARN="arn_folder/outputARN.txt"
outputARN=$(aws iam create-role --role-name $PARAM_ROLE --assume-role-policy-document file://$ROLE_PATH)
echo $outputARN > $pathARN
# arn_folder/outputARN.txt

# example output as ARN:

echo "sleep for 5"
sleep 5


# --role arn:aws:iam::123456789012:role/service-role/MyTestFunction-role-tges6bf4

echo "role has been created successfully and saved to the file: /arn_folder/outputARN.txt"

echo ""
echo "==========================================================="
echo "ARN: $outputARN"
echo "==========================================================="
echo ""

# sample ARN
# "Arn": "arn:aws:iam::354557032487:role/Test-Role",
#        "RoleId": "AROAVFDJ67ATUNTFHI6JE"
#

# role:
# --role arn:aws:iam::354557032487:role/Test-Role
# --role arn:aws:iam::354557032487:role/Test-Role

##
# need to get the arn information to make the lambda function
#
#
#fileARN=$(grep -Eo "$PARAM_ROLE" file:/arn_folder/outputARN.txt)
#fileARN=$(grep -o '"Arn":.*' file://arn_folder/outputARN.txt | cut -d'"' -f4)
#fileARN=$(grep -o '"$PARAM_ROLE":.*' file:/arn_folder/outputARN.txt | cut -d'"' -f4)
#fileARN=$(grep -o '"Arn":.*' file:/arn_folder/outputARN.txt | cut -d'"' -f4)

# fileARN=$(sed 's/.*"Arn": "\(.*\)".*/\1/p' "$pathARN")

# fileARN=$(sed -n 's/.*"Arn":// "\(.*\)".*/\1/p' "$pathARN")
fileARN=$(sed 's/.*"Arn": "\(.*\)".*/\1/' "$pathARN")


# sed pipe out rest
sedPath="sed_folder/sed_temp.txt"
echo "parsing to sed temp"
echo $fileARN > $sedPath

#fileARN2=$(sed '/CreateDate/d; /AssumeRolePolicyDocument/d' "$fileARN" )
fileARNtwo=$(sed 's/", ".*//' "$sedPath" )

echo ""
echo "pathARN: $pathARN"
echo "fileARN: $fileARNtwo"
echo ""
useARN=$fileARNtwo
echo $useARN > test_folder/test.txt


##
# handler name:
nodejsHandler="index.handler"
pythonHandler="handler.lambda_handler"
defaultHandler="lambda_function.lambda_handler"
useHandler="handler.lambda_handler"

##
# file zip path
#
nodejsPath="lambda_folder/lambda_js.zip"
pythonPath="lambda_folder/lambda_py.zip"
usePath="lambda_folder/lambda.zip"

echo "sleep for 5"
sleep 5

##
# create lambda function 
#
echo "Creating lambda function with name $PARAM_NAME"
echo "chosen runtime, ARN, handler"
echo "runtime: $PARAM_RUNTIME"
echo "role ARN: $outputARN"
echo "file ARN: $useARN"
echo "handler: $useHandler"
echo "filepath: $usePath"
# aws lambda create-function --function-name test_cli --runtime python3.6 --role new_test_cli_role --handler handler.lambda_handler --zip-file fileb://lambda.zip
# aws lambda create-function --function-name test_cli --runtime python3.6 --role arn:aws:iam::354557032487:role/Test-Role --handler handler.lambda_handler --zip-file fileb://lambda.zip
# aws lambda create-function --function-name $PARAM_NAME --runtime python3.6 --role arn:aws:iam::354557032487:role/Test-Role --handler handler.lambda_handler --zip-file fileb://lambda.zip

aws lambda create-function --function-name $PARAM_NAME --runtime $PARAM_RUNTIME --role $useARN --handler $useHandler --zip-file fileb://$usePath

# aws lambda create-function --function-name $PARAM_NAME --runtime $PARAM_RUNTIME --role $PARAM_ROLE --handler $useHandler --zip-file fileb://$usePath


echo "sleep for 5"
sleep 5


##
# List of layer ARNs:
#
# python & dynamodb # arn:aws:lambda:ap-south-1:354557032487:layer:python-dynamodb:1
mumbai_py_dynamoDB_ARN="arn:aws:lambda:ap-south-1:354557032487:layer:python-dynamodb:1"
# python & mysql # arn:aws:lambda:ap-south-1:354557032487:layer:bangkok_petHotel:1
mumbai_py_mysql_ARN=""
# nodejs14-16 # arn:aws:lambda:ap-south-1:354557032487:layer:clientdynamodb:2
mumbai_njs1416_ARN=""
# singapore python ARN
singapore_py_dynamoDB_ARN=""
# singapore nodejs 14,16 ARN # arn:aws:lambda:ap-southeast-1:354557032487:layer:client-dynamodb:1
singapore_njs1416_ARN=""
# singapore other ARNs
# use Source ARN
useSourceARN="arn:aws:lambda:ap-southeast-1:354557032487:layer:client-dynamodb:1"

echo "Attaching ARN layer to Lambda Function"
echo "Source ARN: $useSourceARN"

##
# attempt to attach arn layer to lambda function
#
#
# aws lambda create-event-source-mapping (ARN) (function-name) [(enabled?), (batch-size), (starting-position), (start-pos-timestamp), (cli-input-json), (skeleton) ]
# aws lambda create-event-source-mapping --event-source-arn arn:aws:lambda:ap-south-1:354557032487:layer:python-dynamodb:1 --function-name test_cli --enabled

# aws lambda create-event-source-mapping --event-source-arn $useSourceARN --function-name $PARAM_NAME --enabled



################### HERE

##
# update configuration lambda step
#
echo "updating configuration"
# aws lambda update-function-configuration --function-name my-function \
# --layers arn:aws:lambda:us-east-2:123456789012:layer:my-layer:3 \
# arn:aws:lambda:us-east-2:111122223333:layer:their-layer:2
# aws lambda update-function-configuration --function-name my-function  --layers arn:aws:lambda:us-east-2:123456789012:layer:my-layer:3
# aws lambda update-function-configuration --function-name $PARAM_NAME --layers $useSourceARN

##
# removal layers function
#
echo "removal of layers?"
# to remove layers
# aws lambda update-function-configuration --function-name my-function --layers []


##
# kms key arn
#
echo "kms key arn?"
# --kms-key-arn
# aws lambda update-function-configuration --function-name test_cli --kms-key-arn arn:aws:lambda:ap-south-1:354557032487:layer:python-dynamodb:1

##
# return finished script
#
echo "FINISHED SCRIPT"


##
# writing script execution log to folder/file
current_time=$(date +"%T")
current_day=$(date +"%A")

echo "func: $PARAM_NAME | role: $PARAM_ROLE | $current_day | $current_time" >> logs_folder/logs.txt


# echo "function name: $PARAM_NAME$s_datetime"
# echo "role name: $PARAM_ROLE$s_datetime"

echo "function name: $PARAM_NAME"
echo "role name: $PARAM_ROLE"

##
# exit return
echo "exit"