最近通过gitlab去获取服务的版本的时候顺序是乱的, 导致运维平台获取最新的10个版本,不是最新的.
元素局大概是这样.

[
   [
    {
        "name":"v0.9.4",
        "commit":{
            "committed_date":"2020-02-28T20:14:27+08:00"
        }
    },
    {
        "name":"v0.11.5",
        "commit":{
            "committed_date":"2020-07-01T17:15:53+08:00"
        }
    },
    {
        "name":"v0.14.6",
        "commit":{
            "committed_date":"2020-08-02T18:20:22+08:00"
        }
    },
    {
        "name":"v0.9.7",
        "commit":{
            "committed_date":"2020-03-25T17:04:17+08:00"
        }
    }
]

我是是按照committed_date 排序, 要想用go 自带sort 排序就得实现sort 接口, 接口规范如下

type Interface interface {
    // Len is the number of elements in the collection.
    Len() int
    // Less reports whether the element with
    // index i should sort before the element with index j.
    Less(i, j int) bool
    // Swap swaps the elements with indexes i and j.
    Swap(i, j int)
}

排序的完整代码如下:

package main

import (
    "fmt"
    "github.com/json-iterator/go"
    "log"
    "sort"
    "time"
)

func main() {
    var tag Tags
    err := jsoniter.Unmarshal([]byte(sourceDatas), &tag)
    if err != nil {
        log.Fatal(err.Error())
        return
    }
    sort.Sort(tag)
    fmt.Printf("排序后的的数据 %s", tag)
}

type Tag struct {
    Name   string `json:"name"`
    Commit struct {
        CommittedDate time.Time `json:"committed_date"`
    } `json:"commit"`
}

// 需要排序的json
var sourceDatas = `[
    {
        "name":"v0.9.4",
        "commit":{
            "committed_date":"2020-02-28T20:14:27+08:00"
        }
    },
    {
        "name":"v0.11.5",
        "commit":{
            "committed_date":"2020-07-01T17:15:53+08:00"
        }
    },
    {
        "name":"v0.14.6",
        "commit":{
            "committed_date":"2020-08-02T18:20:22+08:00"
        }
    },
    {
        "name":"v0.9.7",
        "commit":{
            "committed_date":"2020-03-25T17:04:17+08:00"
        }
    }
]`

type Tags []Tag

func (t Tags) Len() int {
    return len(t)
}

func (t Tags) Less(i, j int) bool {
    ti := t[i].Commit.CommittedDate
    tj := t[j].Commit.CommittedDate
    return ti.Before(tj) // 按照Commit进行升序
}

func (t Tags) Swap(i, j int) {
    t[i], t[j] = t[j], t[i]
}