===== Lambda Role Policy =====
Variables to change
  * Region ''us-east-1''
  * AWS Account ''123456789012''
  * Name ''certgen'' used in
    * EC2 role name passed to instance
    * SNS topic name used for notifications
    * Log group name / Lambda function name
    * Parameter name for P12 password


<code java>
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "LaunchEC2Instance",
            "Effect": "Allow",
            "Action": "ec2:RunInstances",
            "Resource": [
                "arn:aws:ec2:us-east-1:123456789012:network-interface/*",
                "arn:aws:ec2:us-east-1:123456789012:subnet/*",
                "arn:aws:ec2:us-east-1:123456789012:volume/*",
                "arn:aws:ec2:us-east-1:123456789012:key-pair/*",
                "arn:aws:ec2:us-east-1:123456789012:security-group/*",
                "arn:aws:ec2:*::image/*"
            ]
        },
        {
            "Sid": "LimitInstanceType",
            "Effect": "Allow",
            "Action": "ec2:RunInstances",
            "Resource": [
                "arn:aws:ec2:us-east-1:123456789012:instance/*"
            ],
            "Condition": {
                "StringEquals": {
                    "ec2:InstanceType": "t3.micro"
                }
            }
        },
        {
            "Sid": "PassInstanceRole",
            "Effect": "Allow",
            "Action": [
                "iam:PassRole"
            ],
            "Resource": [
                "arn:aws:iam::123456789012:role/certgen-role-ec2"
            ]
        },
        {
            "Sid": "PublicCertGenTopic",
            "Effect": "Allow",
            "Action": [
                "sns:Publish"
            ],
            "Resource": [
                "arn:aws:sns:us-east-1:123456789012:certgen"
            ]
        },
        {
            "Sid": "CreateLogs",
            "Effect": "Allow",
            "Action": [
                "logs:CreateLogStream",
                "logs:CreateLogGroup",
                "logs:PutLogEvents"
            ],
            "Resource": [
                "arn:aws:logs:us-east-1:123456789012:log-group:/aws/lambda/certgen*"
            ]
        },
        {
            "Sid": "GetPasswordAndAMI",
            "Effect": "Allow",
            "Action": [
                "ssm:GetParameter"
            ],
            "Resource": [
                "arn:aws:ssm:us-east-1:123456789012:parameter/certgen/*/p12password",
                "arn:aws:ssm:us-east-1:*:parameter/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2",
                "arn:aws:ssm:us-east-1:*:parameter/aws/service/ami-amazon-linux-latest/al2023-ami-kernel-default-x86_64"
            ]
        }
    ]
}
</code>