Go Serverless api aws lambda

Serverless Golang REST API with AWS Lambda. Deploying a Golang API to AWS Lambda and handling requests through AWS API Gateway

AWS Setup & Configure

• install aws cli https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-welcome.html

• create Iam USER and attach AdministratorAccess policy https://docs.aws.amazon.com/IAM/latest/UserGuide/id_users_create.html

• aws configuration run below command
  aws configure

  AWS Access Key ID (None): aws_access_key_id
  AWS Secret Access Key (None): aws_secret_access_key
  Default region name (None): us-east-2
  Default output format (None): json

• Create File: ./tmp/trust-policy.json and copy paste the below json which will allow lambda services to assume the lambda-function-executor role \n

{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": { "Service": "lambda.amazonaws.com" }, "Action": "sts:AssumeRole" } ] }

• Create Role with trust policy

aws iam create-role --role-name lambda-function-executor \ --assume-role-policy-document file://./tmp/trust-policy.json

• Attach the policy AWSLambdaBasicExecutionRole using the aws iam attach-role-policy command as below

` aws iam attach-role-policy --role-name lambda-function-executor
--policy-arn arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole

`

• Now, let us deploy the actual Lambda function to AWS using the command aws lambda create-function

functionName=gettingstarted #you can give your preferred name aws lambda create-function --function-name $functionName --runtime go1.x \ --role $rolearn \ --handler main --zip-file fileb://./output/function.zip

• check list of functions aws lambda list-functions