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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 context
import (
"context"
"encoding/json"
"fmt"
"log"
"strings"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/logutils"
kubeclient "github.com/onap/multicloud-k8s/src/rsync/pkg/client"
connector "github.com/onap/multicloud-k8s/src/rsync/pkg/connector"
utils "github.com/onap/multicloud-k8s/src/rsync/pkg/internal"
status "github.com/onap/multicloud-k8s/src/rsync/pkg/status"
pkgerrors "github.com/pkg/errors"
"golang.org/x/sync/errgroup"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
)
type CompositeAppContext struct {
cid interface{}
}
func getRes(ac appcontext.AppContext, name string, app string, cluster string) ([]byte, error) {
var byteRes []byte
rh, err := ac.GetResourceHandle(app, cluster, name)
if err != nil {
return nil, err
}
resval, err := ac.GetValue(rh)
if err != nil {
return nil, err
}
if resval != "" {
result := strings.Split(name, "+")
if result[0] == "" {
return nil, pkgerrors.Errorf("Resource name is nil %s:", name)
}
byteRes = []byte(fmt.Sprintf("%v", resval.(interface{})))
} else {
return nil, pkgerrors.Errorf("Resource value is nil %s", name)
}
return byteRes, nil
}
func terminateResource(ac appcontext.AppContext, c *kubeclient.Client, name string, app string, cluster string, label string) error {
res, err := getRes(ac, name, app, cluster)
if err != nil {
return err
}
if err := c.Delete(res); err != nil {
logutils.Error("Failed to delete res", logutils.Fields{
"error": err,
"resource": name,
})
return err
}
logutils.Info("Deleted::", logutils.Fields{
"cluster": cluster,
"resource": res,
})
return nil
}
func instantiateResource(ac appcontext.AppContext, c *kubeclient.Client, name string, app string, cluster string, label string) error {
res, err := getRes(ac, name, app, cluster)
if err != nil {
return err
}
//Decode the yaml to create a runtime.Object
unstruct := &unstructured.Unstructured{}
//Ignore the returned obj as we expect the data in unstruct
_, err = utils.DecodeYAMLData(string(res), unstruct)
if err != nil {
return pkgerrors.Wrap(err, "Decode deployment object error")
}
//Add the tracking label to all resources created here
labels := unstruct.GetLabels()
//Check if labels exist for this object
if labels == nil {
labels = map[string]string{}
}
//labels[config.GetConfiguration().KubernetesLabelName] = client.GetInstanceID()
labels["emco/deployment-id"] = label
unstruct.SetLabels(labels)
// This checks if the resource we are creating has a podSpec in it
// Eg: Deployment, StatefulSet, Job etc..
// If a PodSpec is found, the label will be added to it too.
//connector.TagPodsIfPresent(unstruct, client.GetInstanceID())
utils.TagPodsIfPresent(unstruct, label)
b, err := unstruct.MarshalJSON()
if err != nil {
logutils.Error("Failed to MarshalJSON", logutils.Fields{
"error": err,
"resource": name,
})
return err
}
if err := c.Apply(b); err != nil {
logutils.Error("Failed to apply res", logutils.Fields{
"error": err,
"resource": name,
})
return err
}
logutils.Info("Installed::", logutils.Fields{
"cluster": cluster,
"resource": res,
})
return nil
}
type fn func(ac appcontext.AppContext, client *kubeclient.Client, res string, app string, cluster string, label string) error
func applyFnComApp(cid interface{}, con *connector.Connector, f fn, breakonError bool) error {
ac := appcontext.AppContext{}
g, _ := errgroup.WithContext(context.Background())
_, err := ac.LoadAppContext(cid)
if err != nil {
return err
}
appsOrder, err := ac.GetAppInstruction("order")
if err != nil {
return err
}
var appList map[string][]string
json.Unmarshal([]byte(appsOrder.(string)), &appList)
logutils.Info("appsorder ", logutils.Fields{
"appsorder": appsOrder,
"string": appList,
})
id, _ := ac.GetCompositeAppHandle()
for _, app := range appList["apporder"] {
appName := app
results := strings.Split(id.(string), "/")
label := results[2] + "-" + app
g.Go(func() error {
clusterNames, err := ac.GetClusterNames(appName)
if err != nil {
return err
}
rg, _ := errgroup.WithContext(context.Background())
for k := 0; k < len(clusterNames); k++ {
cluster := clusterNames[k]
err = status.StartClusterWatcher(cluster)
if err != nil {
log.Printf("Error starting Cluster Watcher %v: %v\n", cluster, err)
}
rg.Go(func() error {
c, err := con.GetClient(cluster)
if err != nil {
logutils.Error("Error in creating kubeconfig client", logutils.Fields{
"error": err,
"cluster": cluster,
"appName": appName,
})
return err
}
resorder, err := ac.GetResourceInstruction(appName, cluster, "order")
if err != nil {
logutils.Error("Resorder error ", logutils.Fields{"error": err})
return err
}
var aov map[string][]string
json.Unmarshal([]byte(resorder.(string)), &aov)
for _, res := range aov["resorder"] {
err = f(ac, c, res, appName, cluster, label)
if err != nil {
logutils.Error("Error in resource %s: %v", logutils.Fields{
"error": err,
"cluster": cluster,
"resource": res,
})
if breakonError {
return err
}
}
}
return nil
})
}
if err := rg.Wait(); err != nil {
logutils.Error("Encountered error in App cluster", logutils.Fields{
"error": err,
})
return err
}
return nil
})
}
if err := g.Wait(); err != nil {
logutils.Error("Encountered error", logutils.Fields{
"error": err,
})
return err
}
return nil
}
// InstantiateComApp Instantiate Apps in Composite App
func (instca *CompositeAppContext) InstantiateComApp(cid interface{}) error {
con := connector.Init(cid)
err := applyFnComApp(cid, con, instantiateResource, true)
if err != nil {
logutils.Error("InstantiateComApp unsuccessful", logutils.Fields{"error": err})
return err
}
//Cleanup
con.RemoveClient()
return nil
}
// TerminateComApp Terminates Apps in Composite App
func (instca *CompositeAppContext) TerminateComApp(cid interface{}) error {
con := connector.Init(cid)
err := applyFnComApp(cid, con, terminateResource, false)
if err != nil {
logutils.Error("TerminateComApp unsuccessful", logutils.Fields{
"error": err,
})
return err
}
//Cleanup
con.RemoveClient()
return nil
}
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