1package date 2 3// Copyright 2017 Microsoft Corporation 4// 5// Licensed under the Apache License, Version 2.0 (the "License"); 6// you may not use this file except in compliance with the License. 7// You may obtain a copy of the License at 8// 9// http://www.apache.org/licenses/LICENSE-2.0 10// 11// Unless required by applicable law or agreed to in writing, software 12// distributed under the License is distributed on an "AS IS" BASIS, 13// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14// See the License for the specific language governing permissions and 15// limitations under the License. 16 17import ( 18 "regexp" 19 "time" 20) 21 22// Azure reports time in UTC but it doesn't include the 'Z' time zone suffix in some cases. 23const ( 24 azureUtcFormatJSON = `"2006-01-02T15:04:05.999999999"` 25 azureUtcFormat = "2006-01-02T15:04:05.999999999" 26 rfc3339JSON = `"` + time.RFC3339Nano + `"` 27 rfc3339 = time.RFC3339Nano 28 tzOffsetRegex = `(Z|z|\+|-)(\d+:\d+)*"*$` 29) 30 31// Time defines a type similar to time.Time but assumes a layout of RFC3339 date-time (i.e., 32// 2006-01-02T15:04:05Z). 33type Time struct { 34 time.Time 35} 36 37// MarshalBinary preserves the Time as a byte array conforming to RFC3339 date-time (i.e., 38// 2006-01-02T15:04:05Z). 39func (t Time) MarshalBinary() ([]byte, error) { 40 return t.Time.MarshalText() 41} 42 43// UnmarshalBinary reconstitutes a Time saved as a byte array conforming to RFC3339 date-time 44// (i.e., 2006-01-02T15:04:05Z). 45func (t *Time) UnmarshalBinary(data []byte) error { 46 return t.UnmarshalText(data) 47} 48 49// MarshalJSON preserves the Time as a JSON string conforming to RFC3339 date-time (i.e., 50// 2006-01-02T15:04:05Z). 51func (t Time) MarshalJSON() (json []byte, err error) { 52 return t.Time.MarshalJSON() 53} 54 55// UnmarshalJSON reconstitutes the Time from a JSON string conforming to RFC3339 date-time 56// (i.e., 2006-01-02T15:04:05Z). 57func (t *Time) UnmarshalJSON(data []byte) (err error) { 58 timeFormat := azureUtcFormatJSON 59 match, err := regexp.Match(tzOffsetRegex, data) 60 if err != nil { 61 return err 62 } else if match { 63 timeFormat = rfc3339JSON 64 } 65 t.Time, err = ParseTime(timeFormat, string(data)) 66 return err 67} 68 69// MarshalText preserves the Time as a byte array conforming to RFC3339 date-time (i.e., 70// 2006-01-02T15:04:05Z). 71func (t Time) MarshalText() (text []byte, err error) { 72 return t.Time.MarshalText() 73} 74 75// UnmarshalText reconstitutes a Time saved as a byte array conforming to RFC3339 date-time 76// (i.e., 2006-01-02T15:04:05Z). 77func (t *Time) UnmarshalText(data []byte) (err error) { 78 timeFormat := azureUtcFormat 79 match, err := regexp.Match(tzOffsetRegex, data) 80 if err != nil { 81 return err 82 } else if match { 83 timeFormat = rfc3339 84 } 85 t.Time, err = ParseTime(timeFormat, string(data)) 86 return err 87} 88 89// String returns the Time formatted as an RFC3339 date-time string (i.e., 90// 2006-01-02T15:04:05Z). 91func (t Time) String() string { 92 // Note: time.Time.String does not return an RFC3339 compliant string, time.Time.MarshalText does. 93 b, err := t.MarshalText() 94 if err != nil { 95 return "" 96 } 97 return string(b) 98} 99 100// ToTime returns a Time as a time.Time 101func (t Time) ToTime() time.Time { 102 return t.Time 103} 104