forked from awsdocs/aws-doc-sdk-examples
/
DescribeInstances.go
57 lines (49 loc) · 1.76 KB
/
DescribeInstances.go
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0
// snippet-start:[ec2.go.describe_instances]
package main
// snippet-start:[ec2.go.describe_instances.imports]
import (
"fmt"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
)
// snippet-end:[ec2.go.describe_instances.imports]
// GetInstances retrieves information about your Amazon EC2 instances.
// Inputs:
// sess is the current session, which provides configuration for the SDK's service clients
// Output:
// If success, a list of Amazon EC2 instances and nil
// Otherwise, nil and an error from the call to DescribeInstances
func GetInstances(sess *session.Session) (*ec2.DescribeInstancesOutput, error) {
// snippet-start:[ec2.go.describe_instances.call]
svc := ec2.New(sess)
result, err := svc.DescribeInstances(nil)
// snippet-end:[ec2.go.describe_instances.call]
if err != nil {
return nil, err
}
return result, nil
}
func main() {
// snippet-start:[ec2.go.describe_instances.session]
sess := session.Must(session.NewSessionWithOptions(session.Options{
SharedConfigState: session.SharedConfigEnable,
}))
// snippet-end:[ec2.go.describe_instances.session]
result, err := GetInstances(sess)
if err != nil {
fmt.Println("Got an error retrieving information about your Amazon EC2 instances:")
fmt.Println(err)
return
}
for _, r := range result.Reservations {
fmt.Println("Reservation ID: " + *r.ReservationId)
fmt.Println("Instance IDs:")
for _, i := range r.Instances {
fmt.Println(" " + *i.InstanceId)
}
fmt.Println("")
}
}
// snippet-end:[ec2.go.describe_instances]