func (c *containerConfig) setTask(t *api.Task) error {
container := t.Spec.GetContainer()
if container == nil {
return exec.ErrRuntimeUnsupported
}
if container.Image == "" {
return ErrImageRequired
}
// index the networks by name
c.networksAttachments = make(map[string]*api.NetworkAttachment, len(t.Networks))
for _, attachment := range t.Networks {
c.networksAttachments[attachment.Network.Spec.Annotations.Name] = attachment
}
c.task = t
preparedSpec, err := template.ExpandContainerSpec(t)
if err != nil {
return err
}
c.task.Spec.Runtime = &api.TaskSpec_Container{
Container: preparedSpec,
}
return nil
}
func validateTask(taskSpec api.TaskSpec) error {
if err := validateResourceRequirements(taskSpec.Resources); err != nil {
return err
}
if err := validateRestartPolicy(taskSpec.Restart); err != nil {
return err
}
if err := validatePlacement(taskSpec.Placement); err != nil {
return err
}
if taskSpec.GetRuntime() == nil {
return grpc.Errorf(codes.InvalidArgument, "TaskSpec: missing runtime")
}
_, ok := taskSpec.GetRuntime().(*api.TaskSpec_Container)
if !ok {
return grpc.Errorf(codes.Unimplemented, "RuntimeSpec: unimplemented runtime in service spec")
}
// Building a empty/dummy Task to validate the templating and
// the resulting container spec as well. This is a *best effort*
// validation.
preparedSpec, err := template.ExpandContainerSpec(&api.Task{
Spec: taskSpec,
ServiceID: "serviceid",
Slot: 1,
NodeID: "nodeid",
Networks: []*api.NetworkAttachment{},
Annotations: api.Annotations{
Name: "taskname",
},
ServiceAnnotations: api.Annotations{
Name: "servicename",
},
Endpoint: &api.Endpoint{},
LogDriver: taskSpec.LogDriver,
})
if err != nil {
return grpc.Errorf(codes.InvalidArgument, err.Error())
}
if err := validateContainerSpec(preparedSpec); err != nil {
return err
}
return nil
}