Files
poseidon/internal/runner/abstract_manager.go
Maximilian Paß ba43f667c2 Add architecture for multiple managers
using the chain of responsibility pattern.
2022-02-28 14:54:40 +01:00

53 lines
1.3 KiB
Go

package runner
import (
"errors"
"github.com/openHPI/poseidon/pkg/dto"
)
var ErrNullObject = errors.New("functionality not available for the null object")
// AbstractManager is used to have a fallback runner manager in the chain of responsibility
// following the null object pattern.
type AbstractManager struct {
nextHandler AccessorHandler
}
func (n *AbstractManager) SetNextHandler(next AccessorHandler) {
n.nextHandler = next
}
func (n *AbstractManager) NextHandler() AccessorHandler {
return n.nextHandler
}
func (n *AbstractManager) ListEnvironments() []ExecutionEnvironment {
return []ExecutionEnvironment{}
}
func (n *AbstractManager) GetEnvironment(_ dto.EnvironmentID) (ExecutionEnvironment, bool) {
return nil, false
}
func (n *AbstractManager) StoreEnvironment(_ ExecutionEnvironment) {}
func (n *AbstractManager) DeleteEnvironment(_ dto.EnvironmentID) {}
func (n *AbstractManager) EnvironmentStatistics() map[dto.EnvironmentID]*dto.StatisticalExecutionEnvironmentData {
return map[dto.EnvironmentID]*dto.StatisticalExecutionEnvironmentData{}
}
func (n *AbstractManager) Claim(_ dto.EnvironmentID, _ int) (Runner, error) {
return nil, ErrNullObject
}
func (n *AbstractManager) Get(_ string) (Runner, error) {
return nil, ErrNullObject
}
func (n *AbstractManager) Return(_ Runner) error {
return nil
}
func (n *AbstractManager) Load() {}