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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 scheduler
import (
"context"
"encoding/json"
"time"
"github.com/onap/multicloud-k8s/src/ncm/internal/grpc"
oc "github.com/onap/multicloud-k8s/src/ncm/internal/ovncontroller"
clusterPkg "github.com/onap/multicloud-k8s/src/ncm/pkg/cluster"
ncmtypes "github.com/onap/multicloud-k8s/src/ncm/pkg/module/types"
nettypes "github.com/onap/multicloud-k8s/src/ncm/pkg/networkintents/types"
appcontext "github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/db"
log "github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/logutils"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/rpc"
installpb "github.com/onap/multicloud-k8s/src/rsync/pkg/grpc/installapp"
pkgerrors "github.com/pkg/errors"
)
// ClusterManager is an interface exposes the Cluster functionality
type SchedulerManager interface {
ApplyNetworkIntents(clusterProvider, cluster string) error
TerminateNetworkIntents(clusterProvider, cluster string) error
}
// ClusterClient implements the Manager
// It will also be used to maintain some localized state
type SchedulerClient struct {
db ncmtypes.ClientDbInfo
}
// NewSchedulerClient returns an instance of the SchedulerClient
// which implements the Manager
func NewSchedulerClient() *SchedulerClient {
return &SchedulerClient{
db: ncmtypes.ClientDbInfo{
StoreName: "cluster",
TagMeta: "clustermetadata",
TagContent: "clustercontent",
TagContext: "clustercontext",
},
}
}
// Apply Network Intents associated with a cluster
func (v *SchedulerClient) ApplyNetworkIntents(clusterProvider, cluster string) error {
_, err := clusterPkg.NewClusterClient().GetClusterContext(clusterProvider, cluster)
if err == nil {
return pkgerrors.Errorf("Cluster network intents have already been applied: %v, %v", clusterProvider, cluster)
}
// Make an app context for the network intent resources
ac := appcontext.AppContext{}
ctxVal, err := ac.InitAppContext()
if err != nil {
return pkgerrors.Wrap(err, "Error creating AppContext")
}
handle, err := ac.CreateCompositeApp()
if err != nil {
return pkgerrors.Wrap(err, "Error creating AppContext CompositeApp")
}
// Add an app (fixed value) to the app context
apphandle, err := ac.AddApp(handle, nettypes.CONTEXT_CLUSTER_APP)
if err != nil {
cleanuperr := ac.DeleteCompositeApp()
if cleanuperr != nil {
log.Warn("Error cleaning AppContext CompositeApp create failure", log.Fields{
"cluster-provider": clusterProvider,
"cluster": cluster,
})
}
return pkgerrors.Wrap(err, "Error adding App to AppContext")
}
// Add an app order instruction
appinstr := struct {
Apporder []string `json:"apporder"`
}{
[]string{nettypes.CONTEXT_CLUSTER_APP},
}
jinstr, _ := json.Marshal(appinstr)
appdepinstr := struct {
Appdep map[string]string `json:"appdependency"`
}{
map[string]string{nettypes.CONTEXT_CLUSTER_APP: "go"},
}
jdep, _ := json.Marshal(appdepinstr)
_, err = ac.AddInstruction(handle, "app", "order", string(jinstr))
_, err = ac.AddInstruction(handle, "app", "dependency", string(jdep))
// Add a cluster to the app
_, err = ac.AddCluster(apphandle, clusterProvider+nettypes.SEPARATOR+cluster)
if err != nil {
cleanuperr := ac.DeleteCompositeApp()
if cleanuperr != nil {
log.Warn("Error cleaning AppContext after add cluster failure", log.Fields{
"cluster-provider": clusterProvider,
"cluster": cluster,
})
}
return pkgerrors.Wrap(err, "Error adding Cluster to AppContext")
}
// Pass the context to the appropriate controller (just default ovncontroller now)
// for internal controller - pass the appcontext, cluster provider and cluster names in directly
// external controllers will be given the appcontext id and wiil have to recontstruct
// their own context
err = oc.Apply(ctxVal, clusterProvider, cluster)
if err != nil {
cleanuperr := ac.DeleteCompositeApp()
if cleanuperr != nil {
log.Warn("Error cleaning AppContext after controller failure", log.Fields{
"cluster-provider": clusterProvider,
"cluster": cluster,
})
}
return pkgerrors.Wrap(err, "Error adding Cluster to AppContext")
}
// save the context in the cluster db record
key := clusterPkg.ClusterKey{
ClusterProviderName: clusterProvider,
ClusterName: cluster,
}
err = db.DBconn.Insert(v.db.StoreName, key, nil, v.db.TagContext, ctxVal)
if err != nil {
cleanuperr := ac.DeleteCompositeApp()
if cleanuperr != nil {
log.Warn("Error cleaning AppContext after DB insert failure", log.Fields{
"cluster-provider": clusterProvider,
"cluster": cluster,
})
}
return pkgerrors.Wrap(err, "Error adding AppContext to DB")
}
// call resource synchronizer to instantiate the CRs in the cluster
conn := rpc.GetRpcConn(grpc.RsyncName)
if conn == nil {
grpc.InitRsyncClient()
conn = rpc.GetRpcConn(grpc.RsyncName)
}
var rpcClient installpb.InstallappClient
var installRes *installpb.InstallAppResponse
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
if conn != nil {
rpcClient = installpb.NewInstallappClient(conn)
installReq := new(installpb.InstallAppRequest)
installReq.AppContext = ctxVal.(string)
installRes, err = rpcClient.InstallApp(ctx, installReq)
if err == nil {
log.Info("Response from InstappApp GRPC call", log.Fields{
"Succeeded": installRes.AppContextInstalled,
"Message": installRes.AppContextInstallMessage,
})
}
} else {
return pkgerrors.Errorf("InstallApp Failed - Could not get InstallAppClient: %v", grpc.RsyncName)
}
return nil
}
// Terminate Network Intents associated with a cluster
func (v *SchedulerClient) TerminateNetworkIntents(clusterProvider, cluster string) error {
context, err := clusterPkg.NewClusterClient().GetClusterContext(clusterProvider, cluster)
if err != nil {
return pkgerrors.Wrapf(err, "Error finding AppContext for cluster: %v, %v", clusterProvider, cluster)
}
// TODO: call resource synchronizer to terminate the CRs in the cluster
// remove the app context
cleanuperr := context.DeleteCompositeApp()
if cleanuperr != nil {
log.Warn("Error deleted AppContext", log.Fields{
"cluster-provider": clusterProvider,
"cluster": cluster,
})
}
// remove the app context field from the cluster db record
key := clusterPkg.ClusterKey{
ClusterProviderName: clusterProvider,
ClusterName: cluster,
}
err = db.DBconn.RemoveTag(v.db.StoreName, key, v.db.TagContext)
if err != nil {
log.Warn("Error removing AppContext from Cluster document", log.Fields{
"cluster-provider": clusterProvider,
"cluster": cluster,
})
}
return nil
}
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