This script lists the ec2 instances, their status and tags

awsEC2ListInstancesTags.go

package main

// This script lists the ec2 instances, their status and tags

import (
  "fmt"
  "github.com/aws/aws-sdk-go/aws"
  "github.com/aws/aws-sdk-go/aws/session"
  "github.com/aws/aws-sdk-go/service/ec2"
  "log"
)

func computeTags(tagsInput []*ec2.Tag) *string {
  res := ""
  for _, tag := range tagsInput {
    res += *tag.Key + " " + *tag.Value + ";"
  }
  return &res
}

func main() {
  sess := session.Must(session.NewSessionWithOptions(session.Options{
    SharedConfigState: session.SharedConfigEnable,
  }))
  svc := ec2.New(sess)

  filters := []*ec2.Filter{
    &ec2.Filter{
      Name:   aws.String("instance-state-name"),
      Values: []*string{aws.String("running"), aws.String("pending"), aws.String("stopped")},
    },
  }
  result, err := svc.DescribeInstances(&ec2.DescribeInstancesInput{Filters: filters})

  if err != nil {
    log.Fatalf("Unable to get descriptions for security groups, %v\n", err)
  }

  for _, reservation := range result.Reservations {
    for _, instance := range reservation.Instances {
      fmt.Printf("%s,%s,%s\n", *instance.InstanceId, *instance.State.Name, *computeTags(instance.Tags))
    }
  }
}