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appstatus.go
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appstatus.go
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package appstatus
import (
"context"
"fmt"
"strings"
"github.com/acorn-io/baaah/pkg/router"
"github.com/acorn-io/baaah/pkg/typed"
v1 "github.com/acorn-io/runtime/pkg/apis/internal.acorn.io/v1"
client2 "github.com/acorn-io/runtime/pkg/client"
"github.com/acorn-io/runtime/pkg/condition"
"github.com/acorn-io/runtime/pkg/jobs"
"github.com/pkg/errors"
kclient "sigs.k8s.io/controller-runtime/pkg/client"
)
type appStatusRenderer struct {
ctx context.Context
c kclient.Client
app *v1.AppInstance
}
// resetHandlerControlledFields will set fields to empty values because it is expected that handlers will append values
// to them. If the field is not reset it will grow indefinitely in a tight loop. This behavior does not
// apply to most status field built in AppStatus as they are fully calculated and reset on each run. But these
// fields are specifically fields with aggregated values.
// Additionally, some corner cases are handled in this code where fields need to be initialized in a special way
func resetHandlerControlledFields(app *v1.AppInstance) {
for name, status := range app.Status.AppStatus.Containers {
// If the app is being updated, then set the containers to not ready so that the controller will run them again and the
// dependency status will be set correctly.
status.Ready = status.Ready && app.Generation == app.Status.ObservedGeneration
status.ExpressionErrors = nil
status.Dependencies = nil
app.Status.AppStatus.Containers[name] = status
}
for name, status := range app.Status.AppStatus.Jobs {
status.ExpressionErrors = nil
status.Dependencies = nil
if app.Generation != app.Status.ObservedGeneration && jobs.ShouldRun(name, app) {
// If a job is going to run again, then set its status to not ready so that the controller will run it again and the
// dependency status will be set correctly.
status.Ready = false
}
app.Status.AppStatus.Jobs[name] = status
}
for name, status := range app.Status.AppStatus.Services {
status.ExpressionErrors = nil
status.MissingConsumerPermissions = nil
app.Status.AppStatus.Services[name] = status
}
for name, status := range app.Status.AppStatus.Secrets {
status.LookupErrors = nil
status.LookupTransitioning = nil
app.Status.AppStatus.Secrets[name] = status
}
for name, status := range app.Status.AppStatus.Routers {
status.MissingTargets = nil
app.Status.AppStatus.Routers[name] = status
}
}
func PrepareStatus(req router.Request, _ router.Response) error {
app := req.Object.(*v1.AppInstance)
if app.Status.AppStatus.Containers == nil {
app.Status.AppStatus.Containers = map[string]v1.ContainerStatus{}
}
if app.Status.AppStatus.Jobs == nil {
app.Status.AppStatus.Jobs = map[string]v1.JobStatus{}
}
if app.Status.AppStatus.Acorns == nil {
app.Status.AppStatus.Acorns = map[string]v1.AcornStatus{}
}
if app.Status.AppStatus.Services == nil {
app.Status.AppStatus.Services = map[string]v1.ServiceStatus{}
}
if app.Status.AppStatus.Secrets == nil {
app.Status.AppStatus.Secrets = map[string]v1.SecretStatus{}
}
if app.Status.AppStatus.Routers == nil {
app.Status.AppStatus.Routers = map[string]v1.RouterStatus{}
}
resetHandlerControlledFields(app)
return nil
}
func SetStatus(req router.Request, _ router.Response) error {
app := req.Object.(*v1.AppInstance)
status, err := Get(req.Ctx, req.Client, app)
if err != nil {
return err
}
setCondition(app, v1.AppInstanceConditionContainers, status.Containers)
setCondition(app, v1.AppInstanceConditionJobs, status.Jobs)
setCondition(app, v1.AppInstanceConditionVolumes, status.Volumes)
setCondition(app, v1.AppInstanceConditionServices, status.Services)
setCondition(app, v1.AppInstanceConditionSecrets, status.Secrets)
setCondition(app, v1.AppInstanceConditionAcorns, status.Acorns)
setCondition(app, v1.AppInstanceConditionRouters, status.Routers)
setPermissionCondition(app)
app.Status.AppStatus = status
return nil
}
func setPermissionCondition(app *v1.AppInstance) {
cond := condition.ForName(app, v1.AppInstanceConditionPermissions)
if len(app.Status.Staged.PermissionsMissing) > 0 {
cond.Error(fmt.Errorf("can not run new image due to missing permissions: %w", &client2.ErrRulesNeeded{
Permissions: app.Status.Staged.PermissionsMissing,
}))
} else {
cond.Success()
}
}
func formatMessage(name string, parts []string, sep string) string {
if name == "" {
if len(parts) == 1 {
return parts[0]
}
return strings.Join(parts, sep)
}
return fmt.Sprintf("%s: %s", name, strings.Join(parts, sep))
}
type commonStatusGetter interface {
GetCommonStatus() v1.CommonStatus
}
func setCondition[T commonStatusGetter](obj kclient.Object, conditionName string, status map[string]T) {
var (
errorMessages []string
transitioningMessages []string
)
for _, entry := range typed.Sorted(status) {
name, status := entry.Key, entry.Value.GetCommonStatus()
name = fmt.Sprintf("(%s: %s)", strings.TrimSuffix(conditionName, "s"), name)
if len(status.ErrorMessages) > 0 {
errorMessages = append(errorMessages, formatMessage(name, status.ErrorMessages, ", "))
} else if len(status.TransitioningMessages) > 0 {
transitioningMessages = append(transitioningMessages, formatMessage(name, status.TransitioningMessages, ", "))
} else if !status.Defined {
transitioningMessages = append(transitioningMessages, formatMessage(name, []string{"pending"}, ", "))
} else if !status.UpToDate {
transitioningMessages = append(transitioningMessages, formatMessage(name, []string{"updating"}, ", "))
} else if !status.Ready {
transitioningMessages = append(transitioningMessages, formatMessage(name, []string{"not ready"}, ", "))
}
}
cond := condition.ForName(obj, conditionName)
if len(errorMessages) > 0 {
cond.Error(errors.New(formatMessage("", append(errorMessages, transitioningMessages...), "; ")))
} else if len(transitioningMessages) > 0 {
cond.Unknown(formatMessage("", append(errorMessages, transitioningMessages...), "; "))
} else {
cond.Success()
}
}
func Get(ctx context.Context, c kclient.Client, app *v1.AppInstance) (v1.AppStatus, error) {
render := appStatusRenderer{
ctx: ctx,
c: c,
app: app.DeepCopy(),
}
if err := render.readContainers(); err != nil {
return v1.AppStatus{}, err
}
if err := render.readJobs(); err != nil {
return v1.AppStatus{}, err
}
if err := render.readVolumes(); err != nil {
return v1.AppStatus{}, err
}
if err := render.readServices(); err != nil {
return v1.AppStatus{}, err
}
if err := render.readSecrets(); err != nil {
return v1.AppStatus{}, err
}
if err := render.readAcorns(); err != nil {
return v1.AppStatus{}, err
}
if err := render.readRouters(); err != nil {
return v1.AppStatus{}, err
}
if err := render.readEndpoints(); err != nil {
return v1.AppStatus{}, err
}
return render.app.Status.AppStatus, nil
}