/
resource.go
65 lines (58 loc) · 1.62 KB
/
resource.go
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//
// Last.Backend LLC CONFIDENTIAL
// __________________
//
// [2014] - [2018] Last.Backend LLC
// All Rights Reserved.
//
// NOTICE: All information contained herein is, and remains
// the property of Last.Backend LLC and its suppliers,
// if any. The intellectual and technical concepts contained
// herein are proprietary to Last.Backend LLC
// and its suppliers and may be covered by Russian Federation and Foreign Patents,
// patents in process, and are protected by trade secret or copyright law.
// Dissemination of this information or reproduction of this material
// is strictly forbidden unless prior written permission is obtained
// from Last.Backend LLC.
//
package resource
import (
"fmt"
"github.com/docker/go-units"
"math/big"
)
const (
// m
mili = 100
// MB - MegaByte size
MB = 1000 * 1000
// MIB - MegaByte size
MIB = 1024 * 1024
// GB - GigaByte size
GB = 1000 * 1000 * 1000
// GIB - GibiByte size
GIB = 1024 * 1024 * 1024
)
// parseResource - parse resource size string
// m,mb,mib,gb,gib,kb,kib,
func DecodeMemoryResource(value string) (int64, error) {
return units.RAMInBytes(value)
}
func EncodeMemoryResource(res int64) string {
return units.BytesSize(float64(res))
}
// returns microseconds
func DecodeCpuResource(value string) (int64, error) {
cpu, ok := new(big.Rat).SetString(value)
if !ok {
return 0, fmt.Errorf("failed to parse %v as a rational number", value)
}
nano := cpu.Mul(cpu, big.NewRat(1e9, 1))
if !nano.IsInt() {
return 0, fmt.Errorf("value is too precise")
}
return nano.Num().Int64(), nil
}
func EncodeCpuResource(res int64) string {
return big.NewRat(res, 1e9).FloatString(3)
}