github.com/galamsiva2020/kubernetes-heapster-monitoring@v0.0.0-20210823134957-3c1baa7c1e70/events/sources/factory.go (about)

     1  // Copyright 2015 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package sources
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"github.com/golang/glog"
    21  
    22  	"k8s.io/heapster/common/flags"
    23  	"k8s.io/heapster/events/core"
    24  	kube "k8s.io/heapster/events/sources/kubernetes"
    25  )
    26  
    27  type SourceFactory struct {
    28  }
    29  
    30  func (this *SourceFactory) Build(uri flags.Uri) (core.EventSource, error) {
    31  	switch uri.Key {
    32  	case "kubernetes":
    33  		src, err := kube.NewKubernetesSource(&uri.Val)
    34  		return src, err
    35  	default:
    36  		return nil, fmt.Errorf("Source not recognized: %s", uri.Key)
    37  	}
    38  }
    39  
    40  func (this *SourceFactory) BuildAll(uris flags.Uris) ([]core.EventSource, error) {
    41  	if len(uris) != 1 {
    42  		return nil, fmt.Errorf("Only one source is supported")
    43  	}
    44  	result := []core.EventSource{}
    45  	for _, uri := range uris {
    46  		source, err := this.Build(uri)
    47  		if err != nil {
    48  			glog.Errorf("Failed to create %s: %v", uri.Key, err)
    49  		} else {
    50  			result = append(result, source)
    51  		}
    52  	}
    53  	return result, nil
    54  }
    55  
    56  func NewSourceFactory() *SourceFactory {
    57  	return &SourceFactory{}
    58  }