github.com/openebs/node-disk-manager@v1.9.1-0.20230225014141-4531f06ffa1e/pkg/select/verify/resourceverify.go (about)

     1  /*
     2  Copyright 2019 The OpenEBS 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 verify
    18  
    19  import (
    20  	"fmt"
    21  
    22  	apis "github.com/openebs/node-disk-manager/api/v1alpha1"
    23  	v1 "k8s.io/api/core/v1"
    24  )
    25  
    26  // GetRequestedCapacity gets the requested capacity from the BlockDeviceClaim
    27  // It returns an error if the Quantity cannot be parsed
    28  func GetRequestedCapacity(list v1.ResourceList) (int64, error) {
    29  
    30  	resourceCapacity := list[apis.ResourceStorage]
    31  	// Check if deviceClaim has valid capacity request
    32  	capacity, err := (&resourceCapacity).AsInt64()
    33  	if !err || capacity <= 0 {
    34  		return 0, fmt.Errorf("invalid capacity requested, %v", err)
    35  	}
    36  	return capacity, nil
    37  }