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For 8 | example, you can subscribe this AWS Lambda function to an SNS Topic to 9 | see all the messages being published to that topic. 10 | 11 | ## Install AWS Lambda function, IAM role, policy 12 | 13 | ./lambda-echo-install 14 | 15 | ## Delete AWS Lambda function, IAM role, policy 16 | 17 | ./lambda-echo-uninstall 18 | 19 | ## Test 20 | 21 | sudo apt-get install jq # For JSON Parsing 22 | 23 | aws lambda invoke \ 24 | --function-name lambda-echo \ 25 | --log-type Tail \ 26 | --payload '{ "message" : "hello, world" }' \ 27 | /dev/null | 28 | jq -r '.LogResult' | 29 | base64-decode 30 | -------------------------------------------------------------------------------- /lambda-echo-assume-role-policy.json: -------------------------------------------------------------------------------- 1 | { 2 | "Version": "2012-10-17", 3 | "Statement": [ 4 | { 5 | "Sid": "", 6 | "Effect": "Allow", 7 | "Principal": { 8 | "Service": "lambda.amazonaws.com" 9 | }, 10 | "Action": "sts:AssumeRole" 11 | } 12 | ] 13 | } 14 | -------------------------------------------------------------------------------- /lambda-echo-execution-policy.json: -------------------------------------------------------------------------------- 1 | { 2 | "Version": "2012-10-17", 3 | "Statement": [ { 4 | "Effect": "Allow", 5 | "Action": [ 6 | "logs:*" 7 | ], 8 | "Resource": "arn:aws:logs:*:*:*" 9 | }, { 10 | "Effect": "Allow", 11 | "Action": [ 12 | "kinesis:DescribeStream", 13 | "kinesis:GetRecords", 14 | "kinesis:GetShardIterator", 15 | "kinesis:ListStreams" 16 | ], 17 | "Resource": "arn:aws:kinesis:*:*:*" 18 | } ] 19 | } 20 | -------------------------------------------------------------------------------- /lambda-echo-install: -------------------------------------------------------------------------------- 1 | #!/bin/bash -ex 2 | # 3 | # Install AWS Lambda function: lambda-echo 4 | # 5 | 6 | ## Setup 7 | 8 | lambda_function_name=lambda-echo 9 | lambda_description="Echo AWS Lambda event JSON to CloudWatch Logs" 10 | lambda_handler=lambda-echo.handler 11 | lambda_memory=128 12 | lambda_timeout=2 13 | 14 | lambda_function_file=$lambda_function_name.js 15 | lambda_assume_role_policy_file=$lambda_function_name-assume-role-policy.json 16 | lambda_execution_policy_file=$lambda_function_name-execution-policy.json 17 | 18 | ## Create ZIP file 19 | 20 | lambda_zip_dir=$(mktemp -d /tmp/$lambda_function_name.XXXXXX) 21 | lambda_zip_file=$lambda_zip_dir/$lambda_function_name.zip 22 | zip -q -r $lambda_zip_file $lambda_function_file 23 | 24 | ## Create Role and attach policies 25 | 26 | lambda_role_arn=$(aws iam create-role \ 27 | --role-name "$lambda_function_name-role" \ 28 | --assume-role-policy-document "file://$lambda_assume_role_policy_file"\ 29 | --output text \ 30 | --query 'Role.Arn' 31 | ) 32 | 33 | aws iam put-role-policy \ 34 | --role-name "$lambda_function_name-role" \ 35 | --policy-name "$lambda_function_name-policy" \ 36 | --policy-document "file://$lambda_execution_policy_file" 37 | 38 | # Seems to be some timing issue here 39 | sleep 10 40 | 41 | ## Create the function and upload the ZIP file 42 | 43 | aws lambda create-function \ 44 | --function-name "$lambda_function_name" \ 45 | --runtime nodejs \ 46 | --memory-size "$lambda_memory" \ 47 | --timeout "$lambda_timeout" \ 48 | --role "$lambda_role_arn" \ 49 | --handler "$lambda_handler" \ 50 | --description "$lambda_description" \ 51 | --zip-file "fileb://$lambda_zip_file" 52 | 53 | ## Cleanup 54 | 55 | rm -r $lambda_zip_dir 56 | 57 | exit 0 58 | -------------------------------------------------------------------------------- /lambda-echo-uninstall: -------------------------------------------------------------------------------- 1 | #!/bin/bash -x 2 | # 3 | # Install AWS Lambda function: lambda-echo 4 | # 5 | 6 | ## Setup 7 | 8 | lambda_function_name=lambda-echo 9 | lambda_assume_role_policy_file=$lambda_function_name-assume-role-policy.json 10 | lambda_execution_policy_file=$lambda_function_name-execution-policy.json 11 | 12 | aws lambda delete-function \ 13 | --function-name "$lambda_function_name" 14 | 15 | aws iam delete-role-policy \ 16 | --role-name "$lambda_function_name-role" \ 17 | --policy-name "$lambda_function_name-policy" 18 | 19 | aws iam delete-role \ 20 | --role-name "$lambda_function_name-role" 21 | 22 | exit 0 23 | -------------------------------------------------------------------------------- /lambda-echo.js: -------------------------------------------------------------------------------- 1 | exports.handler = function(event, context) { 2 | console.log("event: ", JSON.stringify(event, null, 4)); 3 | context.succeed("success"); 4 | } 5 | --------------------------------------------------------------------------------