Merge pull request #11 from openfresh/feature/ec2_tag

add command own EC2 Name Tag

Author: stormcat24

cmd/ec2/describe_tag.go

@@ -0,0 +1,44 @@
+package ec2
+
+import (
+	"fmt"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/ec2"
+	"github.com/spf13/cobra"
+)
+
+var (
+	describeNameTagCmd = &cobra.Command{
+		Use:   "describe-name-tag",
+		Short: "get EC2 tag value",
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			params := &ec2.DescribeInstancesInput{
+				InstanceIds: aws.StringSlice([]string{instanceID}),
+			}
+
+			res, err := client.DescribeInstances(params)
+			if err != nil {
+				return err
+			}
+
+			if len(res.Reservations) == 0 {
+				return fmt.Errorf("describe-instances %s is failed.", instanceID)
+			}
+
+			for _, i := range res.Reservations[0].Instances {
+				var nameTag string
+				for _, t := range i.Tags {
+					if *t.Key == "Name" {
+						nameTag = *t.Value
+						break
+					}
+				}
+				fmt.Println(nameTag)
+			}
+
+			return nil
+		},
+	}
+)

cmd/ec2/init.go

@@ -0,0 +1,28 @@
+package ec2
+
+import (
+	"github.com/aws/aws-sdk-go/service/ec2"
+	"github.com/openfresh/lightaws/remote"
+	"github.com/spf13/cobra"
+)
+
+var (
+	EC2Cmd = &cobra.Command{
+		Use:  "ec2",
+		Long: `EC2`,
+		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+			client = ec2.New(remote.NewAWSSession(region))
+			return nil
+		},
+	}
+	client     *ec2.EC2
+	instanceID string
+	region     string
+	tagName    string
+)
+
+func init() {
+	EC2Cmd.AddCommand(describeNameTagCmd)
+	EC2Cmd.PersistentFlags().StringVarP(&instanceID, "instance-id", "i", "", "")
+	EC2Cmd.PersistentFlags().StringVarP(&region, "region", "r", "", "")
+}

cmd/metadata/describe_tag.go

@@ -18,6 +18,7 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/openfresh/lightaws/cmd/ec2"
 	"github.com/openfresh/lightaws/cmd/ecr"
 	"github.com/openfresh/lightaws/cmd/metadata"
 	"github.com/spf13/cobra"
@@ -53,6 +54,7 @@ func init() {
 
 	RootCmd.AddCommand(
 		metadata.MetadataCmd,
+		ec2.EC2Cmd,
 		ecr.EcrCmd,
 	)
 }