108 lines
2.6 KiB
Go
108 lines
2.6 KiB
Go
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package digitalocean
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import (
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"encoding/json"
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"strconv"
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"github.com/coreos/coreos-cloudinit/datasource/metadata"
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)
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const (
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DefaultAddress = "http://169.254.169.254/"
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apiVersion = "metadata/v1"
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userdataUrl = apiVersion + "/user-data"
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metadataPath = apiVersion + ".json"
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)
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type Address struct {
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IPAddress string `json:"ip_address"`
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Netmask string `json:"netmask"`
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Cidr int `json:"cidr"`
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Gateway string `json:"gateway"`
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}
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type Interface struct {
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IPv4 *Address `json:"ipv4"`
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IPv6 *Address `json:"ipv6"`
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MAC string `json:"mac"`
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Type string `json:"type"`
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}
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type Interfaces struct {
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Public []Interface `json:"public"`
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Private []Interface `json:"private"`
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}
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type DNS struct {
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Nameservers []string `json:"nameservers"`
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}
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type Metadata struct {
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Hostname string `json:"hostname"`
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Interfaces Interfaces `json:"interfaces"`
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PublicKeys []string `json:"public_keys"`
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DNS DNS `json:"dns"`
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}
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type metadataService struct {
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interfaces Interfaces
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dns DNS
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metadata.MetadataService
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}
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func NewDatasource(root string) *metadataService {
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return &metadataService{MetadataService: metadata.NewDatasource(root, apiVersion, userdataUrl, metadataPath)}
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}
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func (ms *metadataService) FetchMetadata() ([]byte, error) {
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data, err := ms.FetchData(ms.MetadataUrl())
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if err != nil || len(data) == 0 {
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return []byte{}, err
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}
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var metadata Metadata
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if err := json.Unmarshal(data, &metadata); err != nil {
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return []byte{}, err
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}
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ms.interfaces = metadata.Interfaces
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ms.dns = metadata.DNS
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attrs := make(map[string]interface{})
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if len(metadata.Interfaces.Public) > 0 {
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if metadata.Interfaces.Public[0].IPv4 != nil {
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attrs["public-ipv4"] = metadata.Interfaces.Public[0].IPv4.IPAddress
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}
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if metadata.Interfaces.Public[0].IPv6 != nil {
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attrs["public-ipv6"] = metadata.Interfaces.Public[0].IPv6.IPAddress
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}
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}
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if len(metadata.Interfaces.Private) > 0 {
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if metadata.Interfaces.Private[0].IPv4 != nil {
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attrs["local-ipv4"] = metadata.Interfaces.Private[0].IPv4.IPAddress
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}
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if metadata.Interfaces.Private[0].IPv6 != nil {
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attrs["local-ipv6"] = metadata.Interfaces.Private[0].IPv6.IPAddress
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}
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}
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attrs["hostname"] = metadata.Hostname
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keys := make(map[string]string)
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for i, key := range metadata.PublicKeys {
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keys[strconv.Itoa(i)] = key
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}
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attrs["public_keys"] = keys
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return json.Marshal(attrs)
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}
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func (ms metadataService) FetchNetworkConfig(filename string) ([]byte, error) {
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return json.Marshal(Metadata{
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Interfaces: ms.interfaces,
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DNS: ms.dns,
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})
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}
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func (ms metadataService) Type() string {
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return "digitalocean-metadata-service"
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}
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