59 lines
1.2 KiB
Go
59 lines
1.2 KiB
Go
package common
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import (
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"fmt"
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"github.com/aws/aws-sdk-go/service/ec2/ec2iface"
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)
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func listEC2Regions(ec2conn ec2iface.EC2API) ([]string, error) {
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var regions []string
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resultRegions, err := ec2conn.DescribeRegions(nil)
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if err != nil {
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return []string{}, err
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}
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for _, region := range resultRegions.Regions {
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regions = append(regions, *region.RegionName)
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}
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return regions, nil
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}
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// ValidateRegion returns an nil if the regions are valid
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// and exists; otherwise an error.
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// ValidateRegion calls ec2conn.DescribeRegions to get the list of
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// regions available to this account.
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func (c *AccessConfig) ValidateRegion(regions ...string) error {
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ec2conn, err := c.NewEC2Connection()
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if err != nil {
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return err
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}
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validRegions, err := listEC2Regions(ec2conn)
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if err != nil {
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return err
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}
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var invalidRegions []string
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for _, region := range regions {
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if region == "" {
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continue
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}
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found := false
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for _, validRegion := range validRegions {
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if region == validRegion {
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found = true
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break
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}
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}
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if !found {
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invalidRegions = append(invalidRegions, region)
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}
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}
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if len(invalidRegions) > 0 {
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return fmt.Errorf("Invalid region(s): %v, available regions: %v", invalidRegions, validRegions)
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}
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return nil
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}
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