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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 networkintents
import (
clusterPkg "github.com/onap/multicloud-k8s/src/clm/pkg/cluster"
ncmtypes "github.com/onap/multicloud-k8s/src/ncm/pkg/module/types"
nettypes "github.com/onap/multicloud-k8s/src/ncm/pkg/networkintents/types"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/db"
mtypes "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module/types"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/state"
pkgerrors "github.com/pkg/errors"
)
// Network contains the parameters needed for dynamic networks
type Network struct {
Metadata mtypes.Metadata `json:"metadata" yaml:"metadata"`
Spec NetworkSpec `json:"spec" yaml:"spec"`
}
type NetworkSpec struct {
CniType string `json:"cniType" yaml:"cniType"`
Ipv4Subnets []nettypes.Ipv4Subnet `json:"ipv4Subnets" yaml:"ipv4Subnets"`
}
// NetworkKey is the key structure that is used in the database
type NetworkKey struct {
ClusterProviderName string `json:"provider"`
ClusterName string `json:"cluster"`
NetworkName string `json:"network"`
}
// structure for the Network Custom Resource
type CrNetwork struct {
ApiVersion string `yaml:"apiVersion"`
Kind string `yaml:"kind"`
Network Network `yaml:",inline"`
}
const NETWORK_APIVERSION = "k8s.plugin.opnfv.org/v1alpha1"
const NETWORK_KIND = "Network"
// Manager is an interface exposing the Network functionality
type NetworkManager interface {
CreateNetwork(pr Network, clusterProvider, cluster string, exists bool) (Network, error)
GetNetwork(name, clusterProvider, cluster string) (Network, error)
GetNetworks(clusterProvider, cluster string) ([]Network, error)
DeleteNetwork(name, clusterProvider, cluster string) error
}
// NetworkClient implements the Manager
// It will also be used to maintain some localized state
type NetworkClient struct {
db ncmtypes.ClientDbInfo
}
// NewNetworkClient returns an instance of the NetworkClient
// which implements the Manager
func NewNetworkClient() *NetworkClient {
return &NetworkClient{
db: ncmtypes.ClientDbInfo{
StoreName: "cluster",
TagMeta: "networkmetadata",
},
}
}
// CreateNetwork - create a new Network
func (v *NetworkClient) CreateNetwork(p Network, clusterProvider, cluster string, exists bool) (Network, error) {
//Construct key and tag to select the entry
key := NetworkKey{
ClusterProviderName: clusterProvider,
ClusterName: cluster,
NetworkName: p.Metadata.Name,
}
//Check if cluster exists and in a state for adding network intents
s, err := clusterPkg.NewClusterClient().GetClusterState(clusterProvider, cluster)
if err != nil {
return Network{}, pkgerrors.New("Unable to find the cluster")
}
switch s.State {
case state.StateEnum.Approved:
return Network{}, pkgerrors.Errorf("Cluster is in an invalid state: " + cluster + " " + state.StateEnum.Approved)
case state.StateEnum.Terminated:
break
case state.StateEnum.Created:
break
case state.StateEnum.Applied:
return Network{}, pkgerrors.Errorf("Existing cluster network intents must be terminated before creating: " + cluster)
case state.StateEnum.Instantiated:
return Network{}, pkgerrors.Errorf("Cluster is in an invalid state: " + cluster + " " + state.StateEnum.Instantiated)
default:
return Network{}, pkgerrors.Errorf("Cluster is in an invalid state: " + cluster + " " + s.State)
}
//Check if this Network already exists
_, err = v.GetNetwork(p.Metadata.Name, clusterProvider, cluster)
if err == nil && !exists {
return Network{}, pkgerrors.New("Network already exists")
}
err = db.DBconn.Insert(v.db.StoreName, key, nil, v.db.TagMeta, p)
if err != nil {
return Network{}, pkgerrors.Wrap(err, "Creating DB Entry")
}
return p, nil
}
// GetNetwork returns the Network for corresponding name
func (v *NetworkClient) GetNetwork(name, clusterProvider, cluster string) (Network, error) {
//Construct key and tag to select the entry
key := NetworkKey{
ClusterProviderName: clusterProvider,
ClusterName: cluster,
NetworkName: name,
}
value, err := db.DBconn.Find(v.db.StoreName, key, v.db.TagMeta)
if err != nil {
return Network{}, pkgerrors.Wrap(err, "Get Network")
}
//value is a byte array
if value != nil {
cp := Network{}
err = db.DBconn.Unmarshal(value[0], &cp)
if err != nil {
return Network{}, pkgerrors.Wrap(err, "Unmarshalling Value")
}
return cp, nil
}
return Network{}, pkgerrors.New("Error getting Network")
}
// GetNetworkList returns all of the Network for corresponding name
func (v *NetworkClient) GetNetworks(clusterProvider, cluster string) ([]Network, error) {
//Construct key and tag to select the entry
key := NetworkKey{
ClusterProviderName: clusterProvider,
ClusterName: cluster,
NetworkName: "",
}
var resp []Network
values, err := db.DBconn.Find(v.db.StoreName, key, v.db.TagMeta)
if err != nil {
return []Network{}, pkgerrors.Wrap(err, "Get Networks")
}
for _, value := range values {
cp := Network{}
err = db.DBconn.Unmarshal(value, &cp)
if err != nil {
return []Network{}, pkgerrors.Wrap(err, "Unmarshalling Value")
}
resp = append(resp, cp)
}
return resp, nil
}
// Delete the Network from database
func (v *NetworkClient) DeleteNetwork(name, clusterProvider, cluster string) error {
// verify cluster is in a state where network intent can be deleted
s, err := clusterPkg.NewClusterClient().GetClusterState(clusterProvider, cluster)
if err != nil {
return pkgerrors.New("Unable to find the cluster")
}
switch s.State {
case state.StateEnum.Approved:
return pkgerrors.Errorf("Cluster is in an invalid state: " + cluster + " " + state.StateEnum.Approved)
case state.StateEnum.Terminated:
break
case state.StateEnum.Created:
break
case state.StateEnum.Applied:
return pkgerrors.Errorf("Cluster network intents must be terminated before deleting: " + cluster)
case state.StateEnum.Instantiated:
return pkgerrors.Errorf("Cluster is in an invalid state: " + cluster + " " + state.StateEnum.Instantiated)
default:
return pkgerrors.Errorf("Cluster is in an invalid state: " + cluster + " " + s.State)
}
//Construct key and tag to select the entry
key := NetworkKey{
ClusterProviderName: clusterProvider,
ClusterName: cluster,
NetworkName: name,
}
err = db.DBconn.Remove(v.db.StoreName, key)
if err != nil {
return pkgerrors.Wrap(err, "Delete Network Entry;")
}
return nil
}
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