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rollback.go
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rollback.go
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package command
import (
"fmt"
"strings"
"time"
"github.com/lunarway/release-manager/cmd/hamctl/command/actions"
"github.com/lunarway/release-manager/cmd/hamctl/command/completion"
"github.com/lunarway/release-manager/cmd/hamctl/template"
httpinternal "github.com/lunarway/release-manager/internal/http"
"github.com/lunarway/release-manager/internal/intent"
"github.com/manifoldco/promptui"
"github.com/spf13/cobra"
)
type ReleaseArtifact interface {
ReleaseArtifactID(service, environment string, artifactID string, intent intent.Intent) (actions.ReleaseResult, error)
}
func NewRollback(
client *httpinternal.Client,
service *string,
logger LoggerFunc,
selectReleaseUI SelectRollbackRelease,
releaseClient ReleaseArtifact,
) *cobra.Command {
var environment, namespace, artifactID string
command := &cobra.Command{
Use: "rollback",
Short: `Rollback to the previous artifact in an environment.`,
Long: `Rollback to the previous artifact in an environment.
The command will release the artifact running in an environment before the
current one, ie. rollback a single release.
Note that 'rollback' does not traverse futher than one release. This means that
if you perform to rollbacks on the same environment after each other, the latter
has no effect.`,
Example: `Rollback to the previous artifact for service 'product' in environment 'dev':
hamctl rollback --service product --env dev`,
Args: cobra.ExactArgs(0),
PreRun: func(c *cobra.Command, args []string) {
defaultShuttleString(shuttleSpecFromFile, &namespace, func(s *shuttleSpec) string {
return s.Vars.K8S.Namespace
})
},
RunE: func(c *cobra.Command, args []string) error {
var currentRelease httpinternal.DescribeReleaseResponseRelease
var rollbackTo *httpinternal.DescribeReleaseResponseRelease
if artifactID == "" {
releasesResponse, err := actions.ReleasesFromEnvironment(client, *service, environment, 3)
if err != nil {
return err
}
if len(releasesResponse.Releases) < 2 {
return fmt.Errorf("can't do rollback, because there isn't a release to rollback to")
}
index, err := selectReleaseUI(environment, releasesResponse.Releases)
if err != nil {
logger("Rollback cancelled: %v\n", err)
return err
}
currentRelease = releasesResponse.Releases[0]
rollbackTo = &releasesResponse.Releases[index]
} else {
releasesResponse, err := actions.ReleasesFromEnvironment(client, *service, environment, 10)
if err != nil {
return err
}
for _, release := range releasesResponse.Releases {
if release.Artifact.ID != artifactID {
continue
}
rollbackTo = &release
break
}
if rollbackTo == nil {
return fmt.Errorf("can't do rollback, because the artifact '%s' isn't found in the last 10 releases", artifactID)
}
currentRelease = releasesResponse.Releases[0]
}
logger("[✓] Starting rollback of service %s to %s\n", *service, rollbackTo.Artifact.ID)
resp, err := releaseClient.ReleaseArtifactID(
*service,
environment,
rollbackTo.Artifact.ID,
intent.NewRollback(currentRelease.Artifact.ID),
)
if err != nil {
logger("[X] Rollback of artifact '%s' failed\n", currentRelease.Artifact.ID)
logger(" Error:\n")
logger(" %s\n", err)
return err
}
printReleaseResponse(func(s string, i ...interface{}) {
logger(s, i...)
}, resp)
return nil
},
}
command.Flags().StringVarP(&environment, "env", "e", "", "environment to release to (required)")
// errors are skipped here as the only case they can occour are if thee flag
// does not exist on the command.
//nolint:errcheck
command.MarkFlagRequired("env")
completion.FlagAnnotation(command, "env", "__hamctl_get_environments")
command.Flags().StringVarP(&namespace, "namespace", "n", "", "namespace the service is deployed to (defaults to env)")
completion.FlagAnnotation(command, "namespace", "__hamctl_get_namespaces")
command.Flags().
StringVarP(&artifactID, "artifact", "", "", "artifact to roll back to. Defaults to previously released artifact for the environment")
return command
}
type SelectRollbackRelease func(environment string, releases []httpinternal.DescribeReleaseResponseRelease) (int, error)
func SelectRollbackReleaseFunc(
environment string,
releases []httpinternal.DescribeReleaseResponseRelease,
) (int, error) {
funcMap := promptui.FuncMap
for name, f := range template.FuncMap() {
funcMap[name] = f
}
rollbackInteractiveTemplates.FuncMap = funcMap
items := mapToRollbackInteractiveTemplateData(releases)
searcher := func(input string, index int) bool {
release := items[index]
name := strings.ToLower(fmt.Sprintf("#%d %s", release.ReleaseIndex, release.ArtifactID))
input = strings.ToLower(input)
return strings.Contains(name, input)
}
prompt := promptui.Select{
Label: fmt.Sprintf("Which release to rollback '%s' to?", environment),
Items: items,
Templates: &rollbackInteractiveTemplates,
Size: 10,
Searcher: searcher,
StartInSearchMode: true,
}
index, _, err := prompt.Run()
if err != nil {
return 0, err
}
return index, nil
}
var (
rollbackInteractiveItemTemlpate = "#{{ .ReleaseIndex }} {{ .ArtifactID | cyan }}{{ if eq .ReleaseIndex 0 }} current release{{ end }} {{ .ReleasedAt | humanizeTime }} by {{ .ReleasedByEmail | blue }}"
rollbackInteractiveTemplates = promptui.SelectTemplates{
Label: "{{ . }}",
Active: "-> " + rollbackInteractiveItemTemlpate,
Inactive: " " + rollbackInteractiveItemTemlpate,
Selected: "-> " + rollbackInteractiveItemTemlpate,
Details: `
{{ print "Release Details " | bold | underline }}
Release Number: {{ .ReleaseIndex }}
Released at: {{ .ReleasedAt.Format dateFormat }}
Released by: {{ .ReleasedByName }} ({{ .ReleasedByEmail }})
Intent: {{ .Intent }}
{{ print "Artifact Details " | bold | underline }}
Artifact: {{ .ArtifactID | cyan }}
{{ if ne (len .Namespace) 0 -}}
Namespace: {{ .Namespace }}
{{ end -}}
Artifact from: {{ .ArtifactFrom.Format dateFormat }}
Artifact by: {{ .CommitterName }} ({{ .CommitterEmail }})
Commit: {{ .CommitURL }}
Message: {{ .CommitMessage }}`,
}
)
type rollbackInteractiveTemplatesData struct {
ReleaseIndex int
ReleasedAt time.Time
ReleasedByName string
ReleasedByEmail string
Intent string
ArtifactID string
Namespace string
ArtifactFrom time.Time
CommitterName string
CommitterEmail string
CommitURL string
CommitMessage string
}
func mapToRollbackInteractiveTemplateData(
resp []httpinternal.DescribeReleaseResponseRelease,
) []rollbackInteractiveTemplatesData {
var d []rollbackInteractiveTemplatesData
for _, r := range resp {
d = append(d, rollbackInteractiveTemplatesData{
ReleaseIndex: r.ReleaseIndex,
ReleasedAt: r.ReleasedAt,
ReleasedByName: r.ReleasedByName,
ReleasedByEmail: r.ReleasedByEmail,
Intent: template.IntentString(r.Intent),
ArtifactID: r.Artifact.ID,
Namespace: r.Artifact.Namespace,
ArtifactFrom: r.Artifact.CI.End,
CommitterName: r.Artifact.Application.CommitterName,
CommitterEmail: r.Artifact.Application.CommitterEmail,
CommitURL: r.Artifact.Application.URL,
CommitMessage: r.Artifact.Application.Message,
})
}
return d
}