// Create inserts a new item according to the unique key from the object.
func (e *Store) Create(ctx genericapirequest.Context, obj runtime.Object) (runtime.Object, error) {
if err := rest.BeforeCreate(e.CreateStrategy, ctx, obj); err != nil {
return nil, err
}
name, err := e.ObjectNameFunc(obj)
if err != nil {
return nil, err
}
key, err := e.KeyFunc(ctx, name)
if err != nil {
return nil, err
}
ttl, err := e.calculateTTL(obj, 0, false)
if err != nil {
return nil, err
}
out := e.NewFunc()
if err := e.Storage.Create(ctx, key, obj, out, ttl); err != nil {
err = storeerr.InterpretCreateError(err, e.QualifiedResource, name)
err = rest.CheckGeneratedNameError(e.CreateStrategy, err, obj)
if !kubeerr.IsAlreadyExists(err) {
return nil, err
}
if errGet := e.Storage.Get(ctx, key, "", out, false); errGet != nil {
return nil, err
}
accessor, errGetAcc := meta.Accessor(out)
if errGetAcc != nil {
return nil, err
}
if accessor.GetDeletionTimestamp() != nil {
msg := &err.(*kubeerr.StatusError).ErrStatus.Message
*msg = fmt.Sprintf("object is being deleted: %s", *msg)
}
return nil, err
}
if e.AfterCreate != nil {
if err := e.AfterCreate(out); err != nil {
return nil, err
}
}
if e.Decorator != nil {
if err := e.Decorator(obj); err != nil {
return nil, err
}
}
return out, nil
}
// Update performs an atomic update and set of the object. Returns the result of the update
// or an error. If the registry allows create-on-update, the create flow will be executed.
// A bool is returned along with the object and any errors, to indicate object creation.
func (e *Store) Update(ctx genericapirequest.Context, name string, objInfo rest.UpdatedObjectInfo) (runtime.Object, bool, error) {
key, err := e.KeyFunc(ctx, name)
if err != nil {
return nil, false, err
}
var (
creatingObj runtime.Object
creating = false
)
storagePreconditions := &storage.Preconditions{}
if preconditions := objInfo.Preconditions(); preconditions != nil {
storagePreconditions.UID = preconditions.UID
}
out := e.NewFunc()
// deleteObj is only used in case a deletion is carried out
var deleteObj runtime.Object
err = e.Storage.GuaranteedUpdate(ctx, key, out, true, storagePreconditions, func(existing runtime.Object, res storage.ResponseMeta) (runtime.Object, *uint64, error) {
// Given the existing object, get the new object
obj, err := objInfo.UpdatedObject(ctx, existing)
if err != nil {
return nil, nil, err
}
// If AllowUnconditionalUpdate() is true and the object specified by the user does not have a resource version,
// then we populate it with the latest version.
// Else, we check that the version specified by the user matches the version of latest storage object.
resourceVersion, err := e.Storage.Versioner().ObjectResourceVersion(obj)
if err != nil {
return nil, nil, err
}
doUnconditionalUpdate := resourceVersion == 0 && e.UpdateStrategy.AllowUnconditionalUpdate()
version, err := e.Storage.Versioner().ObjectResourceVersion(existing)
if err != nil {
return nil, nil, err
}
if version == 0 {
if !e.UpdateStrategy.AllowCreateOnUpdate() {
return nil, nil, kubeerr.NewNotFound(e.QualifiedResource, name)
}
creating = true
creatingObj = obj
if err := rest.BeforeCreate(e.CreateStrategy, ctx, obj); err != nil {
return nil, nil, err
}
ttl, err := e.calculateTTL(obj, 0, false)
if err != nil {
return nil, nil, err
}
return obj, &ttl, nil
}
creating = false
creatingObj = nil
if doUnconditionalUpdate {
// Update the object's resource version to match the latest storage object's resource version.
err = e.Storage.Versioner().UpdateObject(obj, res.ResourceVersion)
if err != nil {
return nil, nil, err
}
} else {
// Check if the object's resource version matches the latest resource version.
newVersion, err := e.Storage.Versioner().ObjectResourceVersion(obj)
if err != nil {
return nil, nil, err
}
if newVersion == 0 {
// TODO: The Invalid error should has a field for Resource.
// After that field is added, we should fill the Resource and
// leave the Kind field empty. See the discussion in #18526.
qualifiedKind := schema.GroupKind{Group: e.QualifiedResource.Group, Kind: e.QualifiedResource.Resource}
fieldErrList := field.ErrorList{field.Invalid(field.NewPath("metadata").Child("resourceVersion"), newVersion, "must be specified for an update")}
return nil, nil, kubeerr.NewInvalid(qualifiedKind, name, fieldErrList)
}
if newVersion != version {
return nil, nil, kubeerr.NewConflict(e.QualifiedResource, name, fmt.Errorf(OptimisticLockErrorMsg))
}
}
if err := rest.BeforeUpdate(e.UpdateStrategy, ctx, obj, existing); err != nil {
return nil, nil, err
}
delete := e.shouldDelete(ctx, key, obj, existing)
if delete {
deleteObj = obj
return nil, nil, errEmptiedFinalizers
}
ttl, err := e.calculateTTL(obj, res.TTL, true)
if err != nil {
return nil, nil, err
}
if int64(ttl) != res.TTL {
return obj, &ttl, nil
}
return obj, nil, nil
})
if err != nil {
// delete the object
if err == errEmptiedFinalizers {
return e.deleteForEmptyFinalizers(ctx, name, key, deleteObj, storagePreconditions)
}
if creating {
err = storeerr.InterpretCreateError(err, e.QualifiedResource, name)
err = rest.CheckGeneratedNameError(e.CreateStrategy, err, creatingObj)
} else {
err = storeerr.InterpretUpdateError(err, e.QualifiedResource, name)
}
return nil, false, err
}
if creating {
if e.AfterCreate != nil {
if err := e.AfterCreate(out); err != nil {
return nil, false, err
}
}
} else {
if e.AfterUpdate != nil {
if err := e.AfterUpdate(out); err != nil {
return nil, false, err
}
}
}
if e.Decorator != nil {
if err := e.Decorator(out); err != nil {
return nil, false, err
}
}
return out, creating, nil
}
func (rs *REST) Create(ctx genericapirequest.Context, obj runtime.Object) (runtime.Object, error) {
service := obj.(*api.Service)
if err := rest.BeforeCreate(Strategy, ctx, obj); err != nil {
return nil, err
}
// TODO: this should probably move to strategy.PrepareForCreate()
releaseServiceIP := false
defer func() {
if releaseServiceIP {
if api.IsServiceIPSet(service) {
rs.serviceIPs.Release(net.ParseIP(service.Spec.ClusterIP))
}
}
}()
nodePortOp := portallocator.StartOperation(rs.serviceNodePorts)
defer nodePortOp.Finish()
if api.IsServiceIPRequested(service) {
// Allocate next available.
ip, err := rs.serviceIPs.AllocateNext()
if err != nil {
// TODO: what error should be returned here? It's not a
// field-level validation failure (the field is valid), and it's
// not really an internal error.
return nil, errors.NewInternalError(fmt.Errorf("failed to allocate a serviceIP: %v", err))
}
service.Spec.ClusterIP = ip.String()
releaseServiceIP = true
} else if api.IsServiceIPSet(service) {
// Try to respect the requested IP.
if err := rs.serviceIPs.Allocate(net.ParseIP(service.Spec.ClusterIP)); err != nil {
// TODO: when validation becomes versioned, this gets more complicated.
el := field.ErrorList{field.Invalid(field.NewPath("spec", "clusterIP"), service.Spec.ClusterIP, err.Error())}
return nil, errors.NewInvalid(api.Kind("Service"), service.Name, el)
}
releaseServiceIP = true
}
assignNodePorts := shouldAssignNodePorts(service)
svcPortToNodePort := map[int]int{}
for i := range service.Spec.Ports {
servicePort := &service.Spec.Ports[i]
allocatedNodePort := svcPortToNodePort[int(servicePort.Port)]
if allocatedNodePort == 0 {
// This will only scan forward in the service.Spec.Ports list because any matches
// before the current port would have been found in svcPortToNodePort. This is really
// looking for any user provided values.
np := findRequestedNodePort(int(servicePort.Port), service.Spec.Ports)
if np != 0 {
err := nodePortOp.Allocate(np)
if err != nil {
// TODO: when validation becomes versioned, this gets more complicated.
el := field.ErrorList{field.Invalid(field.NewPath("spec", "ports").Index(i).Child("nodePort"), np, err.Error())}
return nil, errors.NewInvalid(api.Kind("Service"), service.Name, el)
}
servicePort.NodePort = int32(np)
svcPortToNodePort[int(servicePort.Port)] = np
} else if assignNodePorts {
nodePort, err := nodePortOp.AllocateNext()
if err != nil {
// TODO: what error should be returned here? It's not a
// field-level validation failure (the field is valid), and it's
// not really an internal error.
return nil, errors.NewInternalError(fmt.Errorf("failed to allocate a nodePort: %v", err))
}
servicePort.NodePort = int32(nodePort)
svcPortToNodePort[int(servicePort.Port)] = nodePort
}
} else if int(servicePort.NodePort) != allocatedNodePort {
if servicePort.NodePort == 0 {
servicePort.NodePort = int32(allocatedNodePort)
} else {
err := nodePortOp.Allocate(int(servicePort.NodePort))
if err != nil {
// TODO: when validation becomes versioned, this gets more complicated.
el := field.ErrorList{field.Invalid(field.NewPath("spec", "ports").Index(i).Child("nodePort"), servicePort.NodePort, err.Error())}
return nil, errors.NewInvalid(api.Kind("Service"), service.Name, el)
}
}
}
}
if shouldCheckOrAssignHealthCheckNodePort(service) {
var healthCheckNodePort int
var err error
if l, ok := service.Annotations[apiservice.BetaAnnotationHealthCheckNodePort]; ok {
healthCheckNodePort, err = strconv.Atoi(l)
if err != nil || healthCheckNodePort <= 0 {
return nil, errors.NewInternalError(fmt.Errorf("Failed to parse annotation %v: %v", apiservice.BetaAnnotationHealthCheckNodePort, err))
}
}
if healthCheckNodePort > 0 {
// If the request has a health check nodePort in mind, attempt to reserve it
err := nodePortOp.Allocate(int(healthCheckNodePort))
if err != nil {
return nil, errors.NewInternalError(fmt.Errorf("Failed to allocate requested HealthCheck nodePort %v: %v", healthCheckNodePort, err))
}
} else {
// If the request has no health check nodePort specified, allocate any
healthCheckNodePort, err = nodePortOp.AllocateNext()
if err != nil {
// TODO: what error should be returned here? It's not a
// field-level validation failure (the field is valid), and it's
// not really an internal error.
return nil, errors.NewInternalError(fmt.Errorf("failed to allocate a nodePort: %v", err))
}
// Insert the newly allocated health check port as an annotation (plan of record for Alpha)
service.Annotations[apiservice.BetaAnnotationHealthCheckNodePort] = fmt.Sprintf("%d", healthCheckNodePort)
}
}
out, err := rs.registry.CreateService(ctx, service)
if err != nil {
err = rest.CheckGeneratedNameError(Strategy, err, service)
}
if err == nil {
el := nodePortOp.Commit()
if el != nil {
// these should be caught by an eventual reconciliation / restart
glog.Errorf("error(s) committing service node-ports changes: %v", el)
}
releaseServiceIP = false
}
return out, err
}