/
task.go
206 lines (164 loc) · 4.57 KB
/
task.go
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package models
import (
"encoding/json"
"fmt"
"net/url"
"regexp"
"code.cloudfoundry.org/bbs/format"
"code.cloudfoundry.org/lager/v3"
)
var taskGuidPattern = regexp.MustCompile(`^[a-zA-Z0-9_-]+$`)
type TaskChange struct {
Before *Task
After *Task
}
type TaskFilter struct {
Domain string
CellID string
}
func (t *Task) LagerData() lager.Data {
return lager.Data{
"task_guid": t.TaskGuid,
"domain": t.Domain,
"state": t.State,
"cell_id": t.CellId,
}
}
func (task *Task) Validate() error {
var validationError ValidationError
if task.Domain == "" {
validationError = validationError.Append(ErrInvalidField{"domain"})
}
if !taskGuidPattern.MatchString(task.TaskGuid) {
validationError = validationError.Append(ErrInvalidField{"task_guid"})
}
if task.TaskDefinition == nil {
validationError = validationError.Append(ErrInvalidField{"task_definition"})
} else if defErr := task.TaskDefinition.Validate(); defErr != nil {
validationError = validationError.Append(defErr)
}
if !validationError.Empty() {
return validationError
}
return nil
}
func (t *Task) Copy() *Task {
newTask := *t
newTask.TaskDefinition = t.TaskDefinition.Copy()
return &newTask
}
func (t *Task) ValidateTransitionTo(to Task_State) error {
var valid bool
from := t.State
switch to {
case Task_Running:
valid = from == Task_Pending
case Task_Completed:
valid = from == Task_Running
case Task_Resolving:
valid = from == Task_Completed
}
if !valid {
return NewError(
Error_InvalidStateTransition,
fmt.Sprintf("Cannot transition from %s to %s", from.String(), to.String()),
)
}
return nil
}
func (t *TaskDefinition) Copy() *TaskDefinition {
if t == nil {
return &TaskDefinition{}
}
newTaskDef := *t
return &newTaskDef
}
func (def *TaskDefinition) Validate() error {
var validationError ValidationError
if def.RootFs == "" {
validationError = validationError.Append(ErrInvalidField{"rootfs"})
} else {
rootFsURL, err := url.Parse(def.RootFs)
if err != nil || rootFsURL.Scheme == "" {
validationError = validationError.Append(ErrInvalidField{"rootfs"})
}
}
if def.Action == nil {
validationError = validationError.Append(ErrInvalidActionType)
} else if err := def.Action.Validate(); err != nil {
validationError = validationError.Append(ErrInvalidField{"action"})
validationError = validationError.Append(err)
}
if def.MemoryMb < 0 {
validationError = validationError.Append(ErrInvalidField{"memory_mb"})
}
if def.DiskMb < 0 {
validationError = validationError.Append(ErrInvalidField{"disk_mb"})
}
if limit := def.LogRateLimit; limit != nil {
if limit.BytesPerSecond < -1 {
validationError = validationError.Append(ErrInvalidField{"log_rate_limit"})
}
}
if def.MaxPids < 0 {
validationError = validationError.Append(ErrInvalidField{"max_pids"})
}
if len(def.Annotation) > maximumAnnotationLength {
validationError = validationError.Append(ErrInvalidField{"annotation"})
}
for _, rule := range def.EgressRules {
err := rule.Validate()
if err != nil {
validationError = validationError.Append(ErrInvalidField{"egress_rules"})
}
}
if def.ImageUsername == "" && def.ImagePassword != "" {
validationError = validationError.Append(ErrInvalidField{"image_username"})
}
if def.ImageUsername != "" && def.ImagePassword == "" {
validationError = validationError.Append(ErrInvalidField{"image_password"})
}
err := validateCachedDependencies(def.CachedDependencies)
if err != nil {
validationError = validationError.Append(err)
}
err = validateImageLayers(def.ImageLayers, def.LegacyDownloadUser)
if err != nil {
validationError = validationError.Append(err)
}
if !validationError.Empty() {
return validationError
}
return nil
}
func downgradeTaskDefinitionV3ToV2(t *TaskDefinition) *TaskDefinition {
layers := ImageLayers(t.ImageLayers)
t.CachedDependencies = append(layers.ToCachedDependencies(), t.CachedDependencies...)
t.Action = layers.ToDownloadActions(t.LegacyDownloadUser, t.Action)
t.ImageLayers = nil
return t
}
func (t *Task) VersionDownTo(v format.Version) *Task {
t = t.Copy()
if v < t.Version() {
t.TaskDefinition = downgradeTaskDefinitionV3ToV2(t.TaskDefinition)
}
return t
}
func (t *Task) Version() format.Version {
return format.V3
}
func (s *Task_State) UnmarshalJSON(data []byte) error {
var name string
if err := json.Unmarshal(data, &name); err != nil {
return err
}
if v, found := Task_State_value[name]; found {
*s = Task_State(v)
return nil
}
return fmt.Errorf("invalid state: %s", name)
}
func (s Task_State) MarshalJSON() ([]byte, error) {
return json.Marshal(s.String())
}