youtubebeat/vendor/github.com/elastic/beats/heartbeat/scheduler/schedule/schedule.go

68 lines
1.7 KiB
Go

// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you 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 schedule
import (
"strings"
"time"
"github.com/elastic/beats/heartbeat/scheduler"
"github.com/elastic/beats/heartbeat/scheduler/schedule/cron"
)
type Schedule struct {
scheduler.Schedule
}
type intervalScheduler struct {
interval time.Duration
}
func Parse(in string) (*Schedule, error) {
every := "@every"
// add '@every' keyword
if strings.HasPrefix(in, every) {
interval := strings.TrimSpace(in[len(every):])
d, err := time.ParseDuration(interval)
if err != nil {
return nil, err
}
return &Schedule{intervalScheduler{d}}, nil
}
// fallback on cron scheduler parsers
s, err := cron.Parse(in)
if err != nil {
return nil, err
}
return &Schedule{s}, nil
}
func (s intervalScheduler) Next(t time.Time) time.Time {
return t.Add(s.interval)
}
func (s *Schedule) Unpack(str string) error {
tmp, err := Parse(str)
if err == nil {
*s = *tmp
}
return err
}