constellation/cli/gcp/instances.go

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package gcp
// copy of ec2/instances.go
// TODO(katexochen): refactor into mulitcloud package.
import "errors"
// Instance is a gcp instance.
type Instance struct {
PublicIP string
PrivateIP string
}
// Instances is a map of gcp Instances. The ID of an instance is used as key.
type Instances map[string]Instance
// IDs returns the IDs of all instances of the Constellation.
func (i Instances) IDs() []string {
var ids []string
for id := range i {
ids = append(ids, id)
}
return ids
}
// PublicIPs returns the public IPs of all the instances of the Constellation.
func (i Instances) PublicIPs() []string {
var ips []string
for _, instance := range i {
ips = append(ips, instance.PublicIP)
}
return ips
}
// PrivateIPs returns the private IPs of all the instances of the Constellation.
func (i Instances) PrivateIPs() []string {
var ips []string
for _, instance := range i {
ips = append(ips, instance.PrivateIP)
}
return ips
}
// GetOne return anyone instance out of the instances and its ID.
func (i Instances) GetOne() (string, Instance, error) {
for id, instance := range i {
return id, instance, nil
}
return "", Instance{}, errors.New("map is empty")
}
// GetOthers returns all instances but the one with the handed ID.
func (i Instances) GetOthers(id string) Instances {
others := make(Instances)
for key, instance := range i {
if key != id {
others[key] = instance
}
}
return others
}