github.com/galamsiva2020/kubernetes-heapster-monitoring@v0.0.0-20210823134957-3c1baa7c1e70/metrics/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  	"k8s.io/heapster/common/flags"
    21  	"k8s.io/heapster/metrics/core"
    22  	"k8s.io/heapster/metrics/sources/kubelet"
    23  	"k8s.io/heapster/metrics/sources/summary"
    24  )
    25  
    26  type SourceFactory struct {
    27  }
    28  
    29  func (this *SourceFactory) Build(uri flags.Uri) (core.MetricsSourceProvider, error) {
    30  	switch uri.Key {
    31  	case "kubernetes":
    32  		provider, err := kubelet.NewKubeletProvider(&uri.Val)
    33  		return provider, err
    34  	case "kubernetes.summary_api":
    35  		provider, err := summary.NewSummaryProvider(&uri.Val)
    36  		return provider, err
    37  	default:
    38  		return nil, fmt.Errorf("Source not recognized: %s", uri.Key)
    39  	}
    40  }
    41  
    42  func (this *SourceFactory) BuildAll(uris flags.Uris) (core.MetricsSourceProvider, error) {
    43  	if len(uris) != 1 {
    44  		return nil, fmt.Errorf("Only one source is supported")
    45  	}
    46  	return this.Build(uris[0])
    47  }
    48  
    49  func NewSourceFactory() *SourceFactory {
    50  	return &SourceFactory{}
    51  }