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bottlerocket host update api integration
Adds support for updating via the Bottlerocket Update API. The new platform is used if the node is labeled bottlerocket.aws/updater-interface-version=2.0.0
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| package update_api | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "github.com/Masterminds/semver" | ||
| "github.com/bottlerocket-os/bottlerocket-update-operator/pkg/logging" | ||
| "github.com/bottlerocket-os/bottlerocket-update-operator/pkg/platform" | ||
| "github.com/pkg/errors" | ||
| "io/ioutil" | ||
| "net" | ||
| "net/http" | ||
| "time" | ||
| ) | ||
|
|
||
| // Assert Update-API as a platform implementor. | ||
| var _ platform.Platform = (*Platform)(nil) | ||
|
|
||
| type Platform struct { | ||
| log logging.Logger | ||
| httpClient http.Client | ||
| } | ||
|
|
||
| func New() (*Platform, error) { | ||
| return &Platform{log: logging.New("platform"), httpClient: http.Client{ | ||
| Transport: &http.Transport{ | ||
| DialContext: func(_ context.Context, _, _ string) (net.Conn, error) { | ||
| return net.Dial("unix", bottlerocketApiSock) | ||
| }, | ||
| }, | ||
| // Set a 10 second timeout for all requests | ||
| Timeout: 10 * time.Second, | ||
| }}, nil | ||
| } | ||
|
|
||
| type statusResponse struct { | ||
| osVersion *semver.Version | ||
| } | ||
|
|
||
| func (sr *statusResponse) OK() bool { | ||
| // Bottlerocket OS version needs to be at least 0.4.1 to support the Update API | ||
| constraint, _ := semver.NewConstraint(">= 0.4.1") | ||
| return constraint.Check(sr.osVersion) | ||
| } | ||
|
|
||
| // Try to determine if the Bottlerocket version at least 0.4.1 | ||
| func (p Platform) Status() (platform.Status, error) { | ||
| response, err := p.httpClient.Get("http://unix" + "/os") | ||
| if err != nil { | ||
| p.log.WithError(err).Error("error when trying to GET '/actions/refresh-updates'") | ||
| return nil, err | ||
| } | ||
| var osInfo interface{} | ||
| body, err := ioutil.ReadAll(response.Body) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| err = json.Unmarshal(body, osInfo) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // Assert 'version_id' in the OS info json output as string | ||
| osVersion, err := semver.NewVersion(osInfo.(map[string]interface{})["version_id"].(string)) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "failed to parse 'version_id' field as semver") | ||
| } | ||
| return &statusResponse{osVersion: osVersion}, nil | ||
| } | ||
|
|
||
| type listAvailableResponse struct { | ||
| chosenUpdate *UpdateImage | ||
| } | ||
|
|
||
| func (lar *listAvailableResponse) Updates() []platform.Update { | ||
| if lar.chosenUpdate == nil { | ||
| return nil | ||
| } | ||
| updates := make([]platform.Update, 1) | ||
| updates[0] = lar.chosenUpdate | ||
| return updates | ||
| } | ||
|
|
||
| func (p Platform) ListAvailable() (platform.Available, error) { | ||
| p.log.Debug("fetching list of available updates") | ||
|
|
||
| // Refresh list of updates and check if there are any available | ||
| err := postAction(p.httpClient, "/actions/refresh-updates") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| updateStatus, err := getUpdateStatus(p.httpClient) | ||
| if updateStatus.MostRecentCommand.CmdType == refresh && updateStatus.MostRecentCommand.CmdStatus == Success { | ||
| // If there is no available update to update to | ||
| if updateStatus.ChosenUpdate == nil { | ||
| return &listAvailableResponse{chosenUpdate: nil}, err | ||
| } | ||
| return &listAvailableResponse{chosenUpdate: updateStatus.ChosenUpdate}, err | ||
| } else { | ||
| return &listAvailableResponse{chosenUpdate: nil}, errors.New("failed to refresh updates or update action performed out of band") | ||
| } | ||
| } | ||
|
|
||
| func (p Platform) Prepare(target platform.Update) error { | ||
| updateStatus, err := getUpdateStatus(p.httpClient) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if updateStatus.UpdateState != Available && updateStatus.UpdateState != Staged { | ||
| return errors.Errorf("unexpected update state: %s, expecting state to be 'Available' or 'Staged'. update action performed out of band?", updateStatus.UpdateState) | ||
| } | ||
|
|
||
| // Download the update and apply it to the inactive partition | ||
| err = postAction(p.httpClient, "/actions/prepare-update") | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| updateStatus, err = getUpdateStatus(p.httpClient) | ||
| if updateStatus.MostRecentCommand.CmdType != prepare || updateStatus.MostRecentCommand.CmdStatus != Success { | ||
| return errors.New("failed to prepare update or update action performed out of band") | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (p Platform) Update(target platform.Update) error { | ||
| updateStatus, err := getUpdateStatus(p.httpClient) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if updateStatus.UpdateState != Staged { | ||
| return errors.Errorf("unexpected update state: %s, expecting state to be 'Staged'. update action performed out of band?", updateStatus.UpdateState) | ||
| } | ||
|
|
||
| // Activate the prepared update | ||
| err = postAction(p.httpClient, "/actions/activate-update") | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| updateStatus, err = getUpdateStatus(p.httpClient) | ||
| if updateStatus.MostRecentCommand.CmdType != activate || updateStatus.MostRecentCommand.CmdStatus != Success { | ||
| return errors.New("failed to activate update or update action performed out of band") | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (p Platform) BootUpdate(target platform.Update, rebootNow bool) error { | ||
| updateStatus, err := getUpdateStatus(p.httpClient) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if updateStatus.UpdateState != Ready { | ||
| return errors.Errorf("unexpected update state: %s, expecting state to be 'Ready'. update action performed out of band?", updateStatus.UpdateState) | ||
| } | ||
|
|
||
| // Reboot the host into the activated update | ||
| err = postAction(p.httpClient, "/actions/reboot") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } |
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