Created
April 22, 2022 14:16
Star
You must be signed in to star a gist
Terraform example for DynamoDB table, Lambda, and IAM to allow the Lambda to scan the table
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
provider "aws" { | |
profile = "default" | |
region = "ap-southeast-2" | |
} | |
module "company_table" { | |
source = "terraform-aws-modules/dynamodb-table/aws" | |
name = "company" | |
hash_key = "companyId" | |
attributes = [ | |
{ | |
name = "companyId" | |
type = "S" | |
} | |
] | |
} | |
resource "aws_iam_role" "iam_for_lambda" { | |
name = "iam_for_lambda" | |
# Terraform's "jsonencode" function converts a | |
# Terraform expression result to valid JSON syntax. | |
assume_role_policy = jsonencode({ | |
Version = "2012-10-17" | |
Statement = [ | |
{ | |
Action = "sts:AssumeRole" | |
Effect = "Allow" | |
Sid = "" | |
Principal = { | |
Service = "lambda.amazonaws.com" | |
} | |
}, | |
] | |
}) | |
} | |
data "aws_iam_policy_document" "lambda_policy_document" { | |
statement { | |
actions = [ | |
"dynamodb:Scan", | |
] | |
resources = [ | |
module.company_table.dynamodb_table_arn | |
] | |
} | |
} | |
resource "aws_iam_policy" "dynamodb_lambda_policy" { | |
name = "dynamodb-lambda-policy" | |
description = "This policy will be used by the lambda to write get data from DynamoDB" | |
policy = data.aws_iam_policy_document.lambda_policy_document.json | |
} | |
resource "aws_iam_role_policy_attachment" "lambda_attachements" { | |
role = aws_iam_role.iam_for_lambda.name | |
policy_arn = aws_iam_policy.dynamodb_lambda_policy.arn | |
} | |
resource "aws_lambda_function" "test_lambda" { | |
filename = "get-companies-lambda.zip" | |
function_name = "test_lambda" | |
role = aws_iam_role.iam_for_lambda.arn | |
handler = "index.handler" | |
source_code_hash = filebase64sha256("get-companies-lambda.zip") | |
runtime = "nodejs14.x" | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment