github.com/kubewharf/katalyst-core@v0.5.3/pkg/agent/orm/deviceprovider/kubelet/provider.go (about)

     1  /*
     2  Copyright 2022 The Katalyst Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package kubelet
    18  
    19  import (
    20  	"context"
    21  	"encoding/json"
    22  	"time"
    23  
    24  	"google.golang.org/grpc"
    25  	"k8s.io/klog/v2"
    26  	podresourcesapi "k8s.io/kubelet/pkg/apis/podresources/v1"
    27  
    28  	podresourcesserver "github.com/kubewharf/katalyst-core/pkg/agent/orm/server/podresources"
    29  	"github.com/kubewharf/katalyst-core/pkg/util/general"
    30  	"github.com/kubewharf/katalyst-core/pkg/util/kubelet/podresources"
    31  )
    32  
    33  const (
    34  	podResourcesClientTimeout    = 10 * time.Second
    35  	podResourcesClientMaxMsgSize = 1024 * 1024 * 16
    36  )
    37  
    38  // Provider provide devices resource by kubelet v1 podResources api
    39  type Provider struct {
    40  	client    podresourcesapi.PodResourcesListerClient
    41  	endpoints []string
    42  	conn      *grpc.ClientConn
    43  }
    44  
    45  func NewProvider(endpoints []string, getClientFunc podresources.GetClientFunc) (podresourcesserver.DevicesProvider, error) {
    46  	klog.V(5).Infof("new kubelet devices provider, endpoints: %v", endpoints)
    47  
    48  	p := &Provider{
    49  		endpoints: endpoints,
    50  	}
    51  
    52  	var err error
    53  
    54  	p.client, p.conn, err = getClientFunc(
    55  		general.GetOneExistPath(endpoints),
    56  		podResourcesClientTimeout,
    57  		podResourcesClientMaxMsgSize)
    58  	if err != nil {
    59  		klog.Error(err)
    60  		return nil, err
    61  	}
    62  
    63  	return p, nil
    64  }
    65  
    66  func (p *Provider) GetDevices() []*podresourcesapi.PodResources {
    67  	ctx, cancel := context.WithTimeout(context.Background(), time.Second*1)
    68  	defer cancel()
    69  
    70  	response, err := p.client.List(ctx, &podresourcesapi.ListPodResourcesRequest{})
    71  	if err != nil {
    72  		klog.Errorf("list resources from kubelet fail: %v", err)
    73  		return nil
    74  	}
    75  	if response == nil {
    76  		klog.Error("list resources from kubelet, get nil response without err")
    77  		return nil
    78  	}
    79  	if response.GetPodResources() == nil {
    80  		klog.Error("list resources from kubelet, get nil podResources without err")
    81  		return nil
    82  	}
    83  
    84  	if klog.V(6).Enabled() {
    85  		str, _ := json.Marshal(response)
    86  		klog.Infof("GetDevices: %v", string(str))
    87  	}
    88  
    89  	return response.PodResources
    90  }
    91  
    92  func (p *Provider) GetAllocatableDevices() []*podresourcesapi.ContainerDevices {
    93  	ctx, cancel := context.WithTimeout(context.Background(), time.Second*1)
    94  	defer cancel()
    95  
    96  	response, err := p.client.GetAllocatableResources(ctx, &podresourcesapi.AllocatableResourcesRequest{})
    97  	if err != nil {
    98  		klog.Errorf("GetAllocatableResources from kubelet fail: %v", err)
    99  		return nil
   100  	}
   101  	if response == nil {
   102  		klog.Error("GetAllocatableResources from kubelet, get nil response without err")
   103  		return nil
   104  	}
   105  	if response.GetDevices() == nil {
   106  		klog.Error("GetAllocatableResources from kubelet, get nil response without err")
   107  		return nil
   108  	}
   109  
   110  	if klog.V(6).Enabled() {
   111  		str, _ := json.Marshal(response)
   112  		klog.Infof("GetAllocatableDevices: %v", str)
   113  	}
   114  	return response.GetDevices()
   115  }