Imports github.com/aws/aws-sdk-go/aws github.com/aws/aws-sdk-go/aws/credentials github.com/aws/aws-sdk-go/aws/ec2metadata github.com/aws/aws-sdk-go/aws/session github.com/aws/aws-sdk-go/service/cloudwatch github.com/mackerelio/go-mackerel-plugin Standard library imports errors flag fmt log os time