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/*
* Copyright (c) 2017 Samsung Electronics Co., Ltd All Rights Reserved
*
* 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 workers is responsible for worker list management.
package workers
import (
. "git.tizen.org/tools/boruta"
)
// UUID denotes a key in Capabilities where WorkerUUID is stored.
const UUID string = "UUID"
// WorkerList implements Superviser and Workers interfaces.
// It manages a list of Workers.
type WorkerList struct {
Superviser
Workers
workers map[WorkerUUID]*WorkerInfo
}
// NewWorkerList returns a new WorkerList with all fields set.
func NewWorkerList() *WorkerList {
return &WorkerList{
workers: make(map[WorkerUUID]*WorkerInfo),
}
}
// Register is an implementation of Register from Superviser interface.
// UUID, which identifies Worker, must be present in caps.
func (wl *WorkerList) Register(caps Capabilities) error {
capsUUID, present := caps[UUID]
if !present {
return ErrMissingUUID
}
uuid := WorkerUUID(capsUUID)
worker, registered := wl.workers[uuid]
if registered {
// Subsequent Register calls update the caps.
worker.Caps = caps
} else {
wl.workers[uuid] = &WorkerInfo{
WorkerUUID: uuid,
State: MAINTENANCE,
Caps: caps,
}
}
return nil
}
// SetFail is an implementation of SetFail from Superviser interface.
//
// TODO(amistewicz): WorkerList should process the reason and store it.
func (wl *WorkerList) SetFail(uuid WorkerUUID, reason string) error {
worker, ok := wl.workers[uuid]
if !ok {
return ErrWorkerNotFound
}
if worker.State == MAINTENANCE {
return ErrInMaintenance
}
worker.State = FAIL
return nil
}
// SetState is an implementation of SetState from Workers interface.
func (wl *WorkerList) SetState(uuid WorkerUUID, state WorkerState) error {
return ErrNotImplemented
}
// SetGroups is an implementation of SetGroups from Workers interface.
func (wl *WorkerList) SetGroups(uuid WorkerUUID, groups Groups) error {
return ErrNotImplemented
}
// Deregister is an implementation of Deregister from Workers interface.
func (wl *WorkerList) Deregister(uuid WorkerUUID) error {
return ErrNotImplemented
}
// ListWorkers is an implementation of ListWorkers from Workers interface.
func (wl *WorkerList) ListWorkers(groups Groups, caps Capabilities) ([]WorkerInfo, error) {
return nil, ErrNotImplemented
}
// GetWorkerInfo is an implementation of GetWorkerInfo from Workers interface.
func (wl *WorkerList) GetWorkerInfo(uuid WorkerUUID) (WorkerInfo, error) {
return WorkerInfo{}, ErrNotImplemented
}
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