Provide a way to let recommendation take effect.

• when set to AdoptionTypeStatus, recommendation value only present on recommendation.status.recommendationValue
• when set to AdoptionTypeStatusAndAnnotation, recommendation value only present on recommendation.status.recommendationValue and target object's annotation
• when set to AdoptionTypeAuto, recommendation value not only in status and annotation, it will apply to target's spec. If recommendation is Once , the value will apply to object once, if it is Periodical, the value will apply to object in every turn.

RecommendationRule defines how to select resource for recommendation. We want to simplify the usage for Analytics.

This is a sample yaml for workload recommendation:

apiVersion: analysis.crane.io/v1alpha1
kind: RecommendationRule
metadata:
  name: workload
spec:
  runInterval: 1h                            # 每小时运行一次
  resourceSelectors:                    # 资源的信息
    - kind: Deployment
      apiVersion: apps/v1
  namespaceSelector:
     any: true                                  # 扫描所有namespace
  recommenders:                         # 使用 Workload的副本和资源推荐器
    - name: WorkloadReplicas
    - name: WorkloadResource

This is a sample yaml for service recommendation:

apiVersion: analysis.crane.io/v1alpha1
kind: RecommendationRule
metadata:
  name: workload
spec:
  runInterval: 1h                            # 每小时运行一次
  resourceSelectors:                    # 资源的信息
    - kind: Service
      apiVersion: apps/v1
  namespaceSelector:
     any: true                                  # 扫描所有namespace
  recommenders:                         # 使用 闲置 Service 推荐器
    - name: LBService

recommenders is referring to RecommenderConfiguration Recommender's type

• Optimize some comment style
• Use Selector and TerminationGracePeriodSeconds to following k8s style
• Use corev1.HttpGet to define how to action a http request

1.replace autoscalingapi.CrossVersionObjectReference because we don't want to introduce autoscaling in analysis 2.rename Type to AnalysisType since this field is used by both Analytics and Recommendation 3.add struct CompletionStrategy to indicate how to complete an Analytics or Recommendation 4.add type AdoptionStrategy to indicate how to adopt a recommendation to target 5.add related time status 6. use LastSuccessfulTime refering to k8s Job api

User create a Analytics with CompletionStrategy once, crane will auto-gen related Recommendation with CompletionStrategy once

Question 1: How to know the recommendation is done ? if LastSuccessfulTime + period > now || LastSuccessfulTime == nil then doRecommend else

Question 2: What if user change CompletionStrategy for Analytics ? if Analytics's CompletionStrategy is changed, it will trigger updating for recommendation and do reconcile.

Question 3: If we have a Periodical Analytics, how to trigger a Analytics or a Recommendation right now? It's simple, just create another object with Once CompletionStrategy.

how to slove this ?

make update
go fmt ./pkg/... ./analysis/... ./autoscaling/... ./prediction/... ./ensurance/... ./topology/...
go vet ./pkg/... ./analysis/... ./autoscaling/... ./prediction/... ./ensurance/... ./topology/...
hack/update-all.sh
hack/../hack/..
without -mod=vendor, directory /root/golang/api/vendor/k8s.io/code-generator/cmd/defaulter-gen has no package path
without -mod=vendor, directory /root/golang/api/vendor/k8s.io/code-generator/cmd/client-gen has no package path
without -mod=vendor, directory /root/golang/api/vendor/k8s.io/code-generator/cmd/lister-gen has no package path
without -mod=vendor, directory /root/golang/api/vendor/k8s.io/code-generator/cmd/informer-gen has no package path
without -mod=vendor, directory /root/golang/api/vendor/k8s.io/code-generator/cmd/deepcopy-gen has no package path
make: *** [update] Error 1

my dir

 ll
total 12
drwxr-xr-x. 14 root root 4096 Dec 12 10:38 api
drwxr-xr-x. 13 root root 4096 Dec 11 20:59 crane
-rw-r--r--.  1 root root   33 Dec 11 21:14 go.work

cat go.work 

go 1.19

use (
        ./api
        ./crane
)