func (e *EC2Events) Events() error {
// Request Input
var input *ec2.DescribeInstanceStatusInput = &ec2.DescribeInstanceStatusInput{
DryRun: aws.Bool(false),
Filters: []*ec2.Filter{
{
Name: aws.String("event.code"),
Values: []*string{
aws.String("instance-reboot"),
aws.String("system-reboot"),
aws.String("system-maintenance"),
aws.String("instance-retirement"),
aws.String("instance-stop"),
},
},
},
MaxResults: aws.Int64(1000),
}
// Request response and error
var (
resp *ec2.DescribeInstanceStatusOutput
err error
)
// Instance Status Request
resp, err = e.client.DescribeInstanceStatus(input)
if err != nil {
return err
}
// Assign Instance Status Result List into Object
e.InstanceStatuses = resp.InstanceStatuses
// In the case Instance Status Result has NextToken
for resp.NextToken != nil {
input.NextToken = resp.NextToken
resp, err = e.client.DescribeInstanceStatus(input)
if err != nil {
return err
}
e.InstanceStatuses = append(e.InstanceStatuses, resp.InstanceStatuses...)
}
// InstanceNames
e.instanceNames()
return nil
}
func (c *Client) instanceStatuses(params *ec2.DescribeInstanceStatusInput) (statuses []*ec2.InstanceStatus, err error) {
if params == nil {
params = &ec2.DescribeInstanceStatusInput{}
}
// Update MaxResults param if no filtering options were set.
if params.Filters == nil && params.InstanceIds == nil && c.MaxResults != 0 {
params.MaxResults = aws.Int64(c.MaxResults)
}
var page int
return statuses, c.EC2.DescribeInstanceStatusPages(params, func(resp *ec2.DescribeInstanceStatusOutput, _ bool) bool {
page++
c.Log.Debug("received %d instance statuses (page=%d)", len(resp.InstanceStatuses), page)
statuses = append(statuses, resp.InstanceStatuses...)
return true
})
}