package main
import (
    "fmt"
    "os"
    obs "github.com/huaweicloud/huaweicloud-sdk-go-obs/obs"
)
func main() {
    //推荐通过环境变量获取AKSK，这里也可以使用其他外部引入方式传入，如果使用硬编码可能会存在泄露风险。
    //您可以登录访问管理控制台获取访问密钥AK/SK，获取方式请参见https://support.huaweicloud.com/usermanual-ca/ca_01_0003.html。
    ak := os.Getenv("AccessKeyID")
    sk := os.Getenv("SecretAccessKey")
    // 【可选】如果使用临时AK/SK和SecurityToken访问OBS，同样建议您尽量避免使用硬编码，以降低信息泄露风险。您可以通过环境变量获取访问密钥AK/SK，也可以使用其他外部引入方式传入。
    // securityToken := os.Getenv("SecurityToken")
    // endpoint填写Bucket对应的Endpoint, 这里以华北-北京四为例，其他地区请按实际情况填写。
    endPoint := "https://obs.cn-north-4.myhuaweicloud.com"
    // 创建obsClient实例
    // 如果使用临时AKSK和SecurityToken访问OBS，需要在创建实例时通过obs.WithSecurityToken方法指定securityToken值。
    obsClient, err := obs.New(ak, sk, endPoint, obs.WithSignature(obs.SignatureObs)/*, obs.WithSecurityToken(securityToken)*/)
    if err != nil {
        fmt.Printf("Create obsClient error, errMsg: %s", err.Error())
    }
    input := &obs.SetBucketLifecycleConfigurationInput{}
    // 指定桶名称
    input.Bucket = "examplebucket"
    // 指定桶生命规则
    input.LifecycleRules = []obs.LifecycleRule{
        {
            ID:     "rule1",
            Prefix: "objectPrefix/",
            Status: obs.RuleStatusEnabled,
            Transitions: []obs.Transition{
                {Days: 30, StorageClass: obs.StorageClassCold},
            },
            Expiration:                  obs.Expiration{Days: 100},
            NoncurrentVersionExpiration: obs.NoncurrentVersionExpiration{NoncurrentDays: 20},
        },
    }
    // 设置桶的生命周期
    output, err := obsClient.SetBucketLifecycleConfiguration(input)
    if err == nil {
        fmt.Printf("Set bucket(%s)'s  LifecycleConfiguration successful!\n", input.Bucket)
        fmt.Printf("RequestId:%s\n", output.RequestId)
        return
    }
    fmt.Printf("Set bucket(%s)'s  LifecycleConfiguration fail!\n", input.Bucket)
    if obsError, ok := err.(obs.ObsError); ok {
        fmt.Println("An ObsError was found, which means your request sent to OBS was rejected with an error response.")
        fmt.Println(obsError.Error())
    } else {
        fmt.Println("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.")
        fmt.Println(err)
    }
}