mirror of
https://github.com/yunionio/cloudpods.git
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135 lines
3.0 KiB
Go
135 lines
3.0 KiB
Go
// Copyright 2019 Yunion
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tsdb
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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)
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type TimeRange struct {
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From string
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To string
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now time.Time
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}
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func NewTimeRange(from, to string) *TimeRange {
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return &TimeRange{
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From: from,
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To: to,
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now: time.Now(),
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}
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}
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func tryParseUnixMsEpoch(val string) (time.Time, bool) {
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if val, err := strconv.ParseInt(val, 10, 64); err == nil {
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seconds := val / 1000
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nano := (val - seconds*1000) * 1000000
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return time.Unix(seconds, nano), true
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}
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return time.Time{}, false
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}
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func (tr *TimeRange) ParseFrom() (time.Time, error) {
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if res, ok := tryParseUnixMsEpoch(tr.From); ok {
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return res, nil
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}
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fromRaw := strings.Replace(tr.From, "now-", "", 1)
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diff, err := time.ParseDuration("-" + fromRaw)
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if err != nil {
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return time.Time{}, err
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}
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return tr.now.Add(diff), nil
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}
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func (tr *TimeRange) ParseTo() (time.Time, error) {
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if tr.To == "now" {
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return tr.now, nil
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} else if strings.HasPrefix(tr.To, "now-") {
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withoutNow := strings.Replace(tr.To, "now-", "", 1)
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diff, err := time.ParseDuration("-" + withoutNow)
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if err != nil {
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return time.Time{}, nil
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}
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return tr.now.Add(diff), nil
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}
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if res, ok := tryParseUnixMsEpoch(tr.To); ok {
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return res, nil
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}
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return time.Time{}, fmt.Errorf("cannot parse to value %s", tr.To)
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}
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func (tr *TimeRange) MustGetFrom() time.Time {
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res, err := tr.ParseFrom()
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if err != nil {
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return time.Unix(0, 0)
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}
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return res
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}
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func (tr *TimeRange) MustGetTo() time.Time {
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res, err := tr.ParseTo()
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if err != nil {
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return time.Unix(0, 0)
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}
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return res
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}
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func (tr *TimeRange) GetFromAsMsEpoch() int64 {
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return tr.MustGetFrom().UnixNano() / int64(time.Millisecond)
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}
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func (tr *TimeRange) GetFromAsSecondsEpoch() int64 {
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return tr.GetFromAsMsEpoch() / 1000
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}
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func (tr *TimeRange) GetFromAsTimeUTC() time.Time {
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return tr.MustGetFrom().UTC()
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}
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func (tr *TimeRange) GetToAsMsEpoch() int64 {
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return tr.MustGetTo().UnixNano() / int64(time.Millisecond)
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}
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func (tr *TimeRange) GetToAsSecondsEpoch() int64 {
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return tr.GetToAsMsEpoch() / 1000
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}
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func (tr *TimeRange) GetToAsTimeUTC() time.Time {
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return tr.MustGetTo().UTC()
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}
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// EpochPrecisionToMs converts epoch precision to millisecond, if needed.
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// Only seconds to milliseconds supported right now
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func EpochPrecisionToMs(value float64) float64 {
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s := strconv.FormatFloat(value, 'e', -1, 64)
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if strings.HasSuffix(s, "e+09") {
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return value * float64(1e3)
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}
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if strings.HasSuffix(s, "e+18") {
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return value / float64(time.Millisecond)
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}
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return value
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}
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