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326702925a
This aligns platform names with tals.platofrm kernel arg. Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package gcp
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"github.com/talos-systems/talos/internal/pkg/runtime"
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"github.com/talos-systems/talos/pkg/download"
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)
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// Ref: https://cloud.google.com/compute/docs/storing-retrieving-metadata
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// ex, curl -H "Metadata-Flavor: Google" 'http://169.254.169.254/computeMetadata/v1/instance/network-interfaces/?recursive=true'
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const (
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// GCUserDataEndpoint is the local metadata endpoint inside of DO
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GCUserDataEndpoint = "http://metadata.google.internal/computeMetadata/v1/instance/attributes/user-data"
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// GCExternalIPEndpoint displays all external addresses associated with the instance
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GCExternalIPEndpoint = "http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/?recursive=true"
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)
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// GCP is the concrete type that implements the platform.Platform interface.
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type GCP struct{}
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// Name implements the platform.Platform interface.
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func (g *GCP) Name() string {
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return "gcp"
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}
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// Configuration implements the platform.Platform interface.
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func (g *GCP) Configuration() ([]byte, error) {
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return download.Download(GCUserDataEndpoint, download.WithHeaders(map[string]string{"Metadata-Flavor": "Google"}))
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}
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// Hostname implements the platform.Platform interface.
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func (g *GCP) Hostname() (hostname []byte, err error) {
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return nil, nil
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}
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// Mode implements the platform.Platform interface.
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func (g *GCP) Mode() runtime.Mode {
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return runtime.Cloud
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}
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// ExternalIPs provides any external addresses assigned to the instance
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func (g *GCP) ExternalIPs() (addrs []net.IP, err error) {
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var (
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body []byte
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req *http.Request
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resp *http.Response
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)
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if req, err = http.NewRequest("GET", GCExternalIPEndpoint, nil); err != nil {
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return
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}
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req.Header.Add("Metadata-Flavor", "Google")
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client := &http.Client{}
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if resp, err = client.Do(req); err != nil {
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return
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}
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// nolint: errcheck
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return addrs, fmt.Errorf("failed to retrieve external addresses for instance")
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}
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type metadata []struct {
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AccessConfigs []struct {
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ExternalIP string `json:"externalIp"`
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} `json:"accessConfigs"`
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}
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if body, err = ioutil.ReadAll(resp.Body); err != nil {
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return
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}
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m := metadata{}
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if err = json.Unmarshal(body, &m); err != nil {
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return
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}
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for _, networkInterface := range m {
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for _, accessConfig := range networkInterface.AccessConfigs {
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addrs = append(addrs, net.ParseIP(accessConfig.ExternalIP))
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}
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}
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return addrs, err
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}
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