102 lines
2.6 KiB
Go
102 lines
2.6 KiB
Go
|
// Copyright (C) MongoDB, Inc. 2017-present.
|
||
|
|
//
|
||
|
|
// 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
|
||
|
|
|
||
|
|
package bsoncodec
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"reflect"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"go.mongodb.org/mongo-driver/bson/bsonoptions"
|
||
|
|
"go.mongodb.org/mongo-driver/bson/bsonrw"
|
||
|
|
"go.mongodb.org/mongo-driver/bson/bsontype"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
timeFormatString = "2006-01-02T15:04:05.999Z07:00"
|
||
|
|
)
|
||
|
|
|
||
|
|
var defaultTimeCodec = NewTimeCodec()
|
||
|
|
|
||
|
|
// TimeCodec is the Codec used for time.Time values.
|
||
|
|
type TimeCodec struct {
|
||
|
|
UseLocalTimeZone bool
|
||
|
|
}
|
||
|
|
|
||
|
|
var _ ValueCodec = &TimeCodec{}
|
||
|
|
|
||
|
|
// NewTimeCodec returns a TimeCodec with options opts.
|
||
|
|
func NewTimeCodec(opts ...*bsonoptions.TimeCodecOptions) *TimeCodec {
|
||
|
|
timeOpt := bsonoptions.MergeTimeCodecOptions(opts...)
|
||
|
|
|
||
|
|
codec := TimeCodec{}
|
||
|
|
if timeOpt.UseLocalTimeZone != nil {
|
||
|
|
codec.UseLocalTimeZone = *timeOpt.UseLocalTimeZone
|
||
|
|
}
|
||
|
|
return &codec
|
||
|
|
}
|
||
|
|
|
||
|
|
// DecodeValue is the ValueDecoderFunc for time.Time.
|
||
|
|
func (tc *TimeCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
||
|
|
if !val.CanSet() || val.Type() != tTime {
|
||
|
|
return ValueDecoderError{Name: "TimeDecodeValue", Types: []reflect.Type{tTime}, Received: val}
|
||
|
|
}
|
||
|
|
|
||
|
|
var timeVal time.Time
|
||
|
|
switch vrType := vr.Type(); vrType {
|
||
|
|
case bsontype.DateTime:
|
||
|
|
dt, err := vr.ReadDateTime()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
timeVal = time.Unix(dt/1000, dt%1000*1000000)
|
||
|
|
case bsontype.String:
|
||
|
|
// assume strings are in the isoTimeFormat
|
||
|
|
timeStr, err := vr.ReadString()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
timeVal, err = time.Parse(timeFormatString, timeStr)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
case bsontype.Int64:
|
||
|
|
i64, err := vr.ReadInt64()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
timeVal = time.Unix(i64/1000, i64%1000*1000000)
|
||
|
|
case bsontype.Timestamp:
|
||
|
|
t, _, err := vr.ReadTimestamp()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
timeVal = time.Unix(int64(t), 0)
|
||
|
|
case bsontype.Null:
|
||
|
|
if err := vr.ReadNull(); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
return fmt.Errorf("cannot decode %v into a time.Time", vrType)
|
||
|
|
}
|
||
|
|
|
||
|
|
if !tc.UseLocalTimeZone {
|
||
|
|
timeVal = timeVal.UTC()
|
||
|
|
}
|
||
|
|
val.Set(reflect.ValueOf(timeVal))
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// EncodeValue is the ValueEncoderFunc for time.TIme.
|
||
|
|
func (tc *TimeCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
|
||
|
|
if !val.IsValid() || val.Type() != tTime {
|
||
|
|
return ValueEncoderError{Name: "TimeEncodeValue", Types: []reflect.Type{tTime}, Received: val}
|
||
|
|
}
|
||
|
|
tt := val.Interface().(time.Time)
|
||
|
|
return vw.WriteDateTime(tt.Unix()*1000 + int64(tt.Nanosecond()/1e6))
|
||
|
|
}
|