iot_server/internal/pkg/startup/timer.go

74 lines
2.4 KiB
Go

/*******************************************************************************
* Copyright 2019 Dell Inc.
* Copyright 2020 Intel 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 startup
import (
"github.com/winc-link/hummingbird/internal/pkg/environment"
"time"
)
// Timer contains references to dependencies required by the startup timer implementation.
type Timer struct {
startTime time.Time
duration time.Duration
interval time.Duration
}
// NewStartUpTimer is a factory method that returns an initialized Timer receiver struct.
func NewStartUpTimer(serviceKey string) Timer {
startup := environment.GetStartupInfo(serviceKey)
return Timer{
startTime: time.Now(),
duration: time.Second * time.Duration(startup.Duration),
interval: time.Second * time.Duration(startup.Interval),
}
}
// NewTimer is a factory method that returns a Timer initialized with passed in duration and interval.
func NewTimer(duration int, interval int) Timer {
return Timer{
startTime: time.Now(),
duration: time.Second * time.Duration(duration),
interval: time.Second * time.Duration(interval),
}
}
// SinceAsString returns the time since the timer was created as a string.
func (t Timer) SinceAsString() string {
return time.Since(t.startTime).String()
}
// RemainingAsString returns the time remaining on the timer as a string.
func (t Timer) RemainingAsString() string {
remaining := t.duration - time.Since(t.startTime)
if remaining < 0 {
remaining = 0
}
return remaining.String()
}
// HasNotElapsed returns whether or not the duration specified during construction has elapsed.
func (t Timer) HasNotElapsed() bool {
return time.Now().Before(t.startTime.Add(t.duration))
}
// SleepForInterval pauses execution for the interval specified during construction.
func (t Timer) SleepForInterval() {
time.Sleep(t.interval)
}