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isolator_resources.go
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/
isolator_resources.go
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// Copyright 2015 The appc Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"encoding/json"
"errors"
"k8s.io/kubernetes/pkg/api/resource"
)
var (
ErrDefaultTrue = errors.New("default must be false")
ErrDefaultRequired = errors.New("default must be true")
ErrRequestNonEmpty = errors.New("request not supported by this resource, must be empty")
ResourceIsolatorNames = make(map[ACIdentifier]struct{})
)
const (
ResourceBlockBandwidthName = "resource/block-bandwidth"
ResourceBlockIOPSName = "resource/block-iops"
ResourceCPUName = "resource/cpu"
ResourceMemoryName = "resource/memory"
ResourceNetworkBandwidthName = "resource/network-bandwidth"
)
func init() {
AddIsolatorName(ResourceBlockBandwidthName, ResourceIsolatorNames)
AddIsolatorName(ResourceBlockIOPSName, ResourceIsolatorNames)
AddIsolatorName(ResourceCPUName, ResourceIsolatorNames)
AddIsolatorName(ResourceMemoryName, ResourceIsolatorNames)
AddIsolatorName(ResourceNetworkBandwidthName, ResourceIsolatorNames)
AddIsolatorValueConstructor(ResourceBlockBandwidthName, NewResourceBlockBandwidth)
AddIsolatorValueConstructor(ResourceBlockIOPSName, NewResourceBlockIOPS)
AddIsolatorValueConstructor(ResourceCPUName, NewResourceCPU)
AddIsolatorValueConstructor(ResourceMemoryName, NewResourceMemory)
AddIsolatorValueConstructor(ResourceNetworkBandwidthName, NewResourceNetworkBandwidth)
}
func NewResourceBlockBandwidth() IsolatorValue {
return &ResourceBlockBandwidth{}
}
func NewResourceBlockIOPS() IsolatorValue {
return &ResourceBlockIOPS{}
}
func NewResourceCPU() IsolatorValue {
return &ResourceCPU{}
}
func NewResourceNetworkBandwidth() IsolatorValue {
return &ResourceNetworkBandwidth{}
}
func NewResourceMemory() IsolatorValue {
return &ResourceMemory{}
}
type Resource interface {
Limit() *resource.Quantity
Request() *resource.Quantity
Default() bool
}
type ResourceBase struct {
val resourceValue
}
type resourceValue struct {
Default bool `json:"default"`
Request *resource.Quantity `json:"request"`
Limit *resource.Quantity `json:"limit"`
}
func (r ResourceBase) Limit() *resource.Quantity {
return r.val.Limit
}
func (r ResourceBase) Request() *resource.Quantity {
return r.val.Request
}
func (r ResourceBase) Default() bool {
return r.val.Default
}
func (r *ResourceBase) UnmarshalJSON(b []byte) error {
return json.Unmarshal(b, &r.val)
}
func (r ResourceBase) AssertValid() error {
return nil
}
type ResourceBlockBandwidth struct {
ResourceBase
}
func (r ResourceBlockBandwidth) AssertValid() error {
if r.Default() != true {
return ErrDefaultRequired
}
if r.Request() != nil {
return ErrRequestNonEmpty
}
return nil
}
type ResourceBlockIOPS struct {
ResourceBase
}
func (r ResourceBlockIOPS) AssertValid() error {
if r.Default() != true {
return ErrDefaultRequired
}
if r.Request() != nil {
return ErrRequestNonEmpty
}
return nil
}
type ResourceCPU struct {
ResourceBase
}
func (r ResourceCPU) AssertValid() error {
if r.Default() != false {
return ErrDefaultTrue
}
return nil
}
type ResourceMemory struct {
ResourceBase
}
func (r ResourceMemory) AssertValid() error {
if r.Default() != false {
return ErrDefaultTrue
}
return nil
}
type ResourceNetworkBandwidth struct {
ResourceBase
}
func (r ResourceNetworkBandwidth) AssertValid() error {
if r.Default() != true {
return ErrDefaultRequired
}
if r.Request() != nil {
return ErrRequestNonEmpty
}
return nil
}