英文:
How to sort pods based on creation time
问题
我想按照创建时间对 Kubernetes Pod 进行排序。我尝试添加了以下逻辑。这里的'result'是 Pod 数组（类型为 k8s.io/api/core/v1/Pod）：
sort.Slice(result, func(i, j int) bool {
fmt.Printf("%T \n", result[j].CreationTimestamp)
fmt.Printf("time %t", result[i].CreationTimestamp.Before(result[j].CreationTimestamp))
return result[i].CreationTimestamp.Before(result[j].CreationTimestamp)
})
使用上述逻辑，我得到了错误信息：
cannot use t2 (type "k8s.io/apimachinery/pkg/apis/meta/v1".Time) as type *"k8s.io/apimachinery/pkg/apis/meta/v1".Time in argument to t1.Before
我尝试打印'result[j].CreationTimestamp'的类型，结果是 v1.Time。我不确定还缺少了什么。请问有人可以指导我吗？
解决方法是创建另一个对象，并将其字段设置为 Pod 的名称和创建时间，然后对其进行排序，但这会影响性能。
英文:
I want to sort Kubernetes pod's on creation time. I tried adding logic like this. Here 'result' is array of Pod ( of type k8s.io/api/core/v1/Pod)
sort.Slice(result, func(i, j int) bool {
fmt.Printf("%T \n", result[j].CreationTimestamp)
fmt.Printf("time %t" , result[i].CreationTimestamp.Before(result[j].CreationTimestamp))
return result[i].CreationTimestamp.Before(result[j].CreationTimestamp)
})
With above logic , i get error
cannot use t2 (type "k8s.io/apimachinery/pkg/apis/meta/v1".Time) as type *"k8s.io/apimachinery/pkg/apis/meta/v1".Time in argument to t1.Before
I tried printing type of "result[j].CreationTimestamp" which comes to v1.Time. I am not sure what else I am missing. Can anyone please guide me.
Workaround would be to create a another object and set its fields to name and creationTime of Pod and sort it but that would hit performance.
答案1
得分: 2
根据文档，Before函数接受一个*Time参数，因此我认为你需要像下面这样引用第二个时间戳：
return result[i].CreationTimestamp.Before(&result[j].CreationTimestamp)
英文:
According to the docs Before takes a *Time therefore I think you have to reference the second timestamp like so:
return result[i].CreationTimestamp.Before(&result[j].CreationTimestamp)
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