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taskregistry.go
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taskregistry.go
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// The MIT License (MIT)
//
// Copyright (c) 2014 AT&T
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package impl
import (
"errors"
"sync"
managerInterface "github.com/att-innovate/charmander-scheduler/manager"
)
var ErrTaskNotExists = errors.New("task does not exist")
type TaskRegistry struct {
tasks map[string]*managerInterface.Task
sync.RWMutex
}
func NewTaskRegistry() *TaskRegistry {
return &TaskRegistry{
tasks: make(map[string]*managerInterface.Task),
}
}
func (taskRegistry *TaskRegistry) Register(id string, task *managerInterface.Task) {
taskRegistry.Lock()
defer taskRegistry.Unlock()
taskRegistry.tasks[id] = task
}
func (taskRegistry *TaskRegistry) Fetch(id string) (*managerInterface.Task, error) {
taskRegistry.RLock()
defer taskRegistry.RUnlock()
task, exists := taskRegistry.tasks[id]
if !exists {
return nil, ErrTaskNotExists
}
return task, nil
}
func (taskRegistry *TaskRegistry) TimeOfLastOffer(id string, task *managerInterface.Task) {
taskRegistry.Lock()
defer taskRegistry.Unlock()
taskRegistry.tasks[id] = task
}
func (taskRegistry *TaskRegistry) Delete(id string) {
taskRegistry.Lock()
defer taskRegistry.Unlock()
delete(taskRegistry.tasks, id)
}
func (taskRegistry *TaskRegistry) Tasks() ([]*managerInterface.Task) {
taskRegistry.RLock()
defer taskRegistry.RUnlock()
i := 0
result := make([]*managerInterface.Task, len(taskRegistry.tasks))
for _, task := range taskRegistry.tasks {
result[i] = task
i++
}
return result
}
type filter func(task *managerInterface.Task) bool
func (taskRegistry *TaskRegistry) OpenTaskRequests() ([]*managerInterface.Task) {
return taskRegistry.filterTasks(func(task *managerInterface.Task) bool {return task.RequestSent})
}
func (taskRegistry *TaskRegistry) OpenTaskRequestsNoSla() ([]*managerInterface.Task) {
return taskRegistry.filterTasks(func(task *managerInterface.Task) bool {return task.RequestSent || len(task.Sla) > 0})
}
func (taskRegistry *TaskRegistry) RunningTasks() ([]*managerInterface.Task) {
return taskRegistry.filterTasks(func(task *managerInterface.Task) bool {return task.Running == false})
}
func (taskRegistry *TaskRegistry) filterTasks(suppress filter) ([]*managerInterface.Task) {
taskRegistry.RLock()
defer taskRegistry.RUnlock()
result := make([]*managerInterface.Task, 0)
for _, task := range taskRegistry.tasks {
if suppress(task) { continue }
result = append(result, task)
}
return result
}