forked from awsdocs/aws-doc-sdk-examples
/
ec2_describe_security_groups.go
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/
ec2_describe_security_groups.go
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package main
import (
"fmt"
"os"
"path/filepath"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
)
// Describes the security groups by IDs that are passed into the CLI. Takes
// a space separated list of group IDs as input.
//
// Usage:
//
// go run ec2_describe_security_groups.go groupId1 groupId2 ...
func main() {
if len(os.Args) < 2 {
exitErrorf("Security Group ID required\nUsage: %s group_id ...",
filepath.Base(os.Args[0]))
}
groupIds := os.Args[1:]
// Initialize a session in us-west-2 that the SDK will use to load
// credentials from the shared credentials file ~/.aws/credentials.
sess, err := session.NewSession(&aws.Config{
Region: aws.String("us-west-2")},
)
// Create an EC2 service client.
svc := ec2.New(sess)
// Retrieve the security group descriptions
result, err := svc.DescribeSecurityGroups(&ec2.DescribeSecurityGroupsInput{
GroupIds: aws.StringSlice(groupIds),
})
if err != nil {
if aerr, ok := err.(awserr.Error); ok {
switch aerr.Code() {
case "InvalidGroupId.Malformed":
fallthrough
case "InvalidGroup.NotFound":
exitErrorf("%s.", aerr.Message())
}
}
exitErrorf("Unable to get descriptions for security groups, %v", err)
}
fmt.Println("Security Group:")
for _, group := range result.SecurityGroups {
fmt.Println(group)
}
}
func exitErrorf(msg string, args ...interface{}) {
fmt.Fprintf(os.Stderr, msg+"\n", args...)
os.Exit(1)
}