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/*
* Copyright 2020 Intel Corporation, Inc
*
* 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 module
import (
pkgerrors "github.com/pkg/errors"
)
// Quota contains the parameters needed for a Quota
type Quota struct {
MetaData QMetaDataList `json:"metadata"`
Specification QSpec `json:"spec"`
}
// MetaData contains the parameters needed for metadata
type QMetaDataList struct {
QuotaName string `json:"name"`
Description string `json:"description"`
}
// Spec contains the parameters needed for spec
type QSpec struct {
LimitsCPU string `json:"limits.cpu"`
LimitsMemory string `json:"limits.memory"`
RequestsCPU string `json:"requests.cpu"`
RequestsMemory string `json:"requests.memory"`
RequestsStorage string `json:"requests.storage"`
LimitsEphemeralStorage string `json:"limits.ephemeral.storage"`
PersistentVolumeClaims string `json:"persistentvolumeclaims"`
Pods string `json:"pods"`
ConfigMaps string `json:"configmaps"`
ReplicationControllers string `json:"replicationcontrollers"`
ResourceQuotas string `json:"resourcequotas"`
Services string `json:"services"`
ServicesLoadBalancers string `json:"services.loadbalancers"`
ServicesNodePorts string `json:"services.nodeports"`
Secrets string `json:"secrets"`
CountReplicationControllers string `json:"count/replicationcontrollers"`
CountDeploymentsApps string `json:"count/deployments.apps"`
CountReplicasetsApps string `json:"count/replicasets.apps"`
CountStatefulSets string `json:"count/statefulsets.apps"`
CountJobsBatch string `json:"count/jobs.batch"`
CountCronJobsBatch string `json:"count/cronjobs.batch"`
CountDeploymentsExtensions string `json:"count/deployments.extensions"`
}
// QuotaKey is the key structure that is used in the database
type QuotaKey struct {
Project string `json:"project"`
LogicalCloudName string `json:"logical-cloud-name"`
QuotaName string `json:"qname"`
}
// QuotaManager is an interface that exposes the connection
// functionality
type QuotaManager interface {
CreateQuota(project, logicalCloud string, c Quota) (Quota, error)
GetQuota(project, logicalCloud, name string) (Quota, error)
GetAllQuotas(project, logicalCloud string) ([]Quota, error)
DeleteQuota(project, logicalCloud, name string) error
UpdateQuota(project, logicalCloud, name string, c Quota) (Quota, error)
}
// QuotaClient implements the QuotaManager
// It will also be used to maintain some localized state
type QuotaClient struct {
storeName string
tagMeta string
util Utility
}
// QuotaClient returns an instance of the QuotaClient
// which implements the QuotaManager
func NewQuotaClient() *QuotaClient {
service := DBService{}
return &QuotaClient{
storeName: "orchestrator",
tagMeta: "quota",
util: service,
}
}
// Create entry for the quota resource in the database
func (v *QuotaClient) CreateQuota(project, logicalCloud string, c Quota) (Quota, error) {
//Construct key consisting of name
key := QuotaKey{
Project: project,
LogicalCloudName: logicalCloud,
QuotaName: c.MetaData.QuotaName,
}
//Check if project exists
err := v.util.CheckProject(project)
if err != nil {
return Quota{}, pkgerrors.New("Unable to find the project")
}
//check if logical cloud exists
err = v.util.CheckLogicalCloud(project, logicalCloud)
if err != nil {
return Quota{}, pkgerrors.New("Unable to find the logical cloud")
}
//Check if this Quota already exists
_, err = v.GetQuota(project, logicalCloud, c.MetaData.QuotaName)
if err == nil {
return Quota{}, pkgerrors.New("Quota already exists")
}
err = v.util.DBInsert(v.storeName, key, nil, v.tagMeta, c)
if err != nil {
return Quota{}, pkgerrors.Wrap(err, "Creating DB Entry")
}
return c, nil
}
// Get returns Quota for corresponding quota name
func (v *QuotaClient) GetQuota(project, logicalCloud, quotaName string) (Quota, error) {
//Construct the composite key to select the entry
key := QuotaKey{
Project: project,
LogicalCloudName: logicalCloud,
QuotaName: quotaName,
}
value, err := v.util.DBFind(v.storeName, key, v.tagMeta)
if err != nil {
return Quota{}, pkgerrors.Wrap(err, "Quota")
}
//value is a byte array
if value != nil {
q := Quota{}
err = v.util.DBUnmarshal(value[0], &q)
if err != nil {
return Quota{}, pkgerrors.Wrap(err, "Unmarshaling value")
}
return q, nil
}
return Quota{}, pkgerrors.New("Error getting Quota")
}
// GetAll returns all cluster quotas in the logical cloud
func (v *QuotaClient) GetAllQuotas(project, logicalCloud string) ([]Quota, error) {
//Construct the composite key to select the entry
key := QuotaKey{
Project: project,
LogicalCloudName: logicalCloud,
QuotaName: "",
}
var resp []Quota
values, err := v.util.DBFind(v.storeName, key, v.tagMeta)
if err != nil {
return []Quota{}, pkgerrors.Wrap(err, "Get All Quotas")
}
for _, value := range values {
q := Quota{}
err = v.util.DBUnmarshal(value, &q)
if err != nil {
return []Quota{}, pkgerrors.Wrap(err, "Unmarshaling value")
}
resp = append(resp, q)
}
return resp, nil
}
// Delete the Quota entry from database
func (v *QuotaClient) DeleteQuota(project, logicalCloud, quotaName string) error {
//Construct the composite key to select the entry
key := QuotaKey{
Project: project,
LogicalCloudName: logicalCloud,
QuotaName: quotaName,
}
err := v.util.DBRemove(v.storeName, key)
if err != nil {
return pkgerrors.Wrap(err, "Delete Quota")
}
return nil
}
// Update an entry for the Quota in the database
func (v *QuotaClient) UpdateQuota(project, logicalCloud, quotaName string, c Quota) (Quota, error) {
key := QuotaKey{
Project: project,
LogicalCloudName: logicalCloud,
QuotaName: quotaName,
}
//Check quota URL name against the quota json name
if c.MetaData.QuotaName != quotaName {
return Quota{}, pkgerrors.New("Update Error - Quota name mismatch")
}
//Check if this Quota exists
_, err := v.GetQuota(project, logicalCloud, quotaName)
if err != nil {
return Quota{}, pkgerrors.New("Update Error - Quota doesn't exist")
}
err = v.util.DBInsert(v.storeName, key, nil, v.tagMeta, c)
if err != nil {
return Quota{}, pkgerrors.Wrap(err, "Updating DB Entry")
}
return c, nil
}
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