mindxdl--common--type.go

// Copyright (c) 2021. Huawei Technologies Co., Ltd. All rights reserved.

// Package common this file for time format
package common

import (
   "database/sql/driver"
   "fmt"
   "time"
)

const timeFormat = "2006-01-02 15:04:05"

// DateTime DateTime
type DateTime time.Time

// MarshalJSON for time format to datetime
func (t DateTime) MarshalJSON() ([]byte, error) {
   datetime := fmt.Sprintf(`"%s"`, time.Time(t).Format(timeFormat))
   return []byte(datetime), nil
}

// Value insert timestamp into mysql need this function.
func (t DateTime) Value() (driver.Value, error) {
   var zeroTime time.Time
   ti := time.Time(t)
   if ti.UnixNano() == zeroTime.UnixNano() {
      return nil, nil
   }
   return ti, nil
}

// Scan valueof time.Time
func (t *DateTime) Scan(v interface{}) error {
   ti, ok := v.(time.Time) // NOT directly assertion v.(DateTime)
   if ok {
      *t = DateTime(ti)
      return nil
   }
   return fmt.Errorf("can not convert %v to timestamp", v)
}

// ResultMsg resp struct
type ResultMsg struct {
   Status string      `json:"status"`
   Msg    string      `json:"msg"`
   Data   interface{} `json:"data"`
}

// PageResult pagequery resut
type PageResult struct {
   CurrentPage int         `json:"currentPage"`
   PageSize    int         `json:"pageSize"`
   PageCount   uint64      `json:"pageCount"`
   Total       uint64      `json:"total"`
   Data        interface{} `json:"data"`
}

const (
   // StatusOK status
   StatusOK = 200
   // StatusFailed failed status
   StatusFailed = 400
   // BaseHex  Base Parse integer need params
   BaseHex = 10
   // BitSize64 Base Parse integer need params
   BitSize64 = 64

   // HTTPServerTimeout http server timeout
   HTTPServerTimeout = 20
   // MaxConcurrency default max concurrency
   MaxConcurrency = 100
   // DefaultConcurrency default concurrency
   DefaultConcurrency = 20
   // SortByAsc sort by asc
   SortByAsc = "asc"
   // SortByDesc sort by desc
   SortByDesc = "desc"
   // MaxPageSize the max page size
   MaxPageSize = 100
   // ContentDisposition header information
   ContentDisposition = "Content-Disposition"
   // ContentType header information
   ContentType = "Content-Type"
   // AcceptLength header information
   AcceptLength = "Accept-Length"

   // ConnectionRetryTimes retry connect times
   ConnectionRetryTimes = 3
   // DefaultRequestTimeout internal request timeout
   DefaultRequestTimeout = 5
)

// NewDateTime new DateTime for marshal
func NewDateTime(time2 time.Time) *DateTime {
   if time2.IsZero() {
      return nil
   }

   datetime := DateTime(time2)
   return &datetime
}

标签：return,nil,--,Time,DateTime,json,time,go,type
来源： https://www.cnblogs.com/gongxianjin/p/16683178.html