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/*
* Copyright (c) 2020 InterDigital Communications, 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 gc
import (
"time"
log "github.com/InterDigitalInc/AdvantEDGE/go-packages/meep-logger"
redis "github.com/InterDigitalInc/AdvantEDGE/go-packages/meep-redis"
)
const redisTable = 0
type GarbageCollector struct {
rc *redis.Connector
ticker *time.Ticker
mutex sync.mutex
baseKey string
}
// NewGarbageCollector - Creates and initialize a Garbage Collector instance
func NewGarbageCollector(redisAddr string) (gc *GarbageCollector, err error) {
// Create new Garbage Collector instance
gc = new(GarbageCollector)
// Connect to Redis DB
gc.rc, err = redis.NewConnector(redisAddr, redisTable)
if err != nil {
log.Error("Failed connection to Redis DB. Error: ", err)
return nil, err
}
log.Info("Connected to Redis DB")
log.Info("Created Garbage Collector")
return gc, nil
}
// Start - start garbage collection ticker with provided interval
func (gc *GarbageCollector) Start(interval time.Duration) error {
mutex.Lock()
defer mutex.Unlock()
log.Debug("[Garbage Collection] Periodic ticker started with interval: ", interval.String())
gc.ticker = time.NewTicker(interval)
go func() {
for range gc.ticker.C {
gc.Execute()
}
}()
}
// Stop - stop garbage collection ticker if running
func (gc *GarbageCollector) Stop() error {
mutex.Lock()
defer mutex.Unlock()
if gc.ticker != nil {
gc.ticker.Stop()
gc.ticker = nil
log.Debug("[Garbage Collection] Periodic ticker stopped")
}
}
// Execute
func (gc *GarbageCollector) Execute() error {
mutex.Lock()
defer mutex.Unlock()
log.Debug("[Garbage Collection] Execution starting: ", time.Now())
log.Debug("[Garbage Collection] Execution complete: ", time.Now())
}