fake.go

/*
   Copyright 2014 CoreOS, Inc.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package unit

import (
	"sync"

	"github.com/coreos/fleet/pkg"
)

func NewFakeUnitManager() *FakeUnitManager {
	return &FakeUnitManager{u: map[string]bool{}}
}

type FakeUnitManager struct {
	sync.RWMutex
	u map[string]bool
}

func (fum *FakeUnitManager) Load(name string, u UnitFile) error {
	fum.Lock()
	defer fum.Unlock()

	fum.u[name] = false
	return nil
}

func (fum *FakeUnitManager) Unload(name string) {
	fum.Lock()
	defer fum.Unlock()

	delete(fum.u, name)
}

func (fum *FakeUnitManager) TriggerStart(string) {}
func (fum *FakeUnitManager) TriggerStop(string)  {}

func (fum *FakeUnitManager) Units() ([]string, error) {
	fum.RLock()
	defer fum.RUnlock()

	lst := make([]string, 0, len(fum.u))
	for name, _ := range fum.u {
		lst = append(lst, name)
	}
	return lst, nil
}

func (fum *FakeUnitManager) GetUnitState(name string) (us *UnitState, err error) {
	fum.RLock()
	defer fum.RUnlock()

	if _, ok := fum.u[name]; ok {
		us = &UnitState{
			LoadState:   "loaded",
			ActiveState: "active",
			SubState:    "running",
		}
	}
	return
}

func (fum *FakeUnitManager) GetUnitStates(filter pkg.Set) (map[string]*UnitState, error) {
	fum.RLock()
	defer fum.RUnlock()

	states := make(map[string]*UnitState)
	for _, name := range filter.Values() {
		if _, ok := fum.u[name]; ok {
			states[name] = &UnitState{"loaded", "active", "running", "", "", name}
		}
	}

	return states, nil
}

func (fum *FakeUnitManager) MarshalJSON() ([]byte, error) {
	return nil, nil
}