1 files changed, 143 insertions, 0 deletions
diff --git a/src/orchestrator/pkg/module/instantiation.go b/src/orchestrator/pkg/module/instantiation.go
new file mode 100644
index 00000000..3c704181
--- /dev/null
+++ b/src/orchestrator/pkg/module/instantiation.go
@@ -0,0 +1,143 @@
+/*
+ * 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 (
+	"fmt"
+	"github.com/onap/multicloud-k8s/src/orchestrator/utils/helm"
+
+	"github.com/onap/multicloud-k8s/src/orchestrator/utils/types"
+	pkgerrors "github.com/pkg/errors"
+
+	"encoding/base64"
+	"log"
+)
+
+// ManifestFileName is the name given to the manifest file in the profile package
+const ManifestFileName = "manifest.yaml"
+
+// InstantiationClient implements the InstantiationManager
+type InstantiationClient struct {
+	storeName   string
+	tagMetaData string
+}
+
+// InstantiationManager is an interface which exposes the
+// InstantiationManager functionalities
+type InstantiationManager interface {
+	//ApproveInstantiation(p string, ca string, v string, di string) (error)
+	Instantiate(p string, ca string, v string, di string) error
+}
+
+// NewInstantiationClient returns an instance of InstantiationClient
+func NewInstantiationClient() *InstantiationClient {
+	return &InstantiationClient{
+		storeName:   "orchestrator",
+		tagMetaData: "instantiation",
+	}
+}
+
+// TODO
+//ApproveInstantiation approves an instantiation
+// func (c InstantiationClient) ApproveInstantiation(p string, ca string, v string, di string) (error){
+// }
+
+func getOverrideValuesByAppName(ov []OverrideValues, a string) map[string]string {
+	for _, eachOverrideVal := range ov {
+		if eachOverrideVal.AppName == a {
+			return eachOverrideVal.ValuesObj
+		}
+	}
+	return map[string]string{}
+}
+
+// GetSortedTemplateForApp returns the sorted templates.
+//It takes in arguments - appName, project, compositeAppName, releaseName, compositeProfileName, array of override values
+func GetSortedTemplateForApp(appName, p, ca, v, rName, cp string, overrideValues []OverrideValues) ([]types.KubernetesResourceTemplate, error) {
+
+	log.Println("Processing App.. ", appName)
+
+	var sortedTemplates []types.KubernetesResourceTemplate
+
+	aC, err := NewAppClient().GetAppContent(appName, p, ca, v)
+	if err != nil {
+		return sortedTemplates, pkgerrors.Wrap(err, fmt.Sprint("Not finding the content of app:: ", appName))
+	}
+	appContent, err := base64.StdEncoding.DecodeString(aC.FileContent)
+	if err != nil {
+		return sortedTemplates, pkgerrors.Wrap(err, "Fail to convert to byte array")
+	}
+	log.Println("Got the app content..")
+
+	appPC, err := NewAppProfileClient().GetAppProfileContentByApp(p, ca, v, cp, appName)
+	if err != nil {
+		return sortedTemplates, pkgerrors.Wrap(err, fmt.Sprintf("Not finding the appProfileContent for:: %s", appName))
+	}
+	appProfileContent, err := base64.StdEncoding.DecodeString(appPC.Profile)
+	if err != nil {
+		return sortedTemplates, pkgerrors.Wrap(err, "Fail to convert to byte array")
+	}
+
+	log.Println("Got the app Profile content ...")
+
+	overrideValuesOfApp := getOverrideValuesByAppName(overrideValues, appName)
+	//Convert override values from map to array of strings of the following format
+	//foo=bar
+	overrideValuesOfAppStr := []string{}
+	if overrideValuesOfApp != nil {
+		for k, v := range overrideValuesOfApp {
+			overrideValuesOfAppStr = append(overrideValuesOfAppStr, k+"="+v)
+		}
+	}
+
+	sortedTemplates, err = helm.NewTemplateClient("", "default", rName,
+		ManifestFileName).Resolve(appContent,
+		appProfileContent, overrideValuesOfAppStr,
+		rName, appName)
+
+	log.Printf("The len of the sortedTemplates :: %d", len(sortedTemplates))
+
+	return sortedTemplates, err
+}
+
+// Instantiate methods takes in project
+func (c InstantiationClient) Instantiate(p string, ca string, v string, di string) error {
+
+	dIGrp, err := NewDeploymentIntentGroupClient().GetDeploymentIntentGroup(di, p, ca, v)
+	if err != nil {
+		return pkgerrors.Wrap(err, "Not finding the deploymentIntentGroup")
+	}
+	rName := dIGrp.Spec.Version //rName is releaseName
+	overrideValues := dIGrp.Spec.OverrideValuesObj
+	cp := dIGrp.Spec.Profile
+
+	log.Printf("dIGrp :: %s, releaseName :: %s and cp :: %s \n", dIGrp.MetaData.Name, rName, cp)
+	allApps, err := NewAppClient().GetApps(p, ca, v)
+	if err != nil {
+		return pkgerrors.Wrap(err, "Not finding the apps")
+	}
+	for _, eachApp := range allApps {
+		sortedTemplates, err := GetSortedTemplateForApp(eachApp.Metadata.Name, p, ca, v, rName, cp, overrideValues)
+		if err != nil {
+			return pkgerrors.Wrap(err, "Unable to get the sorted templates for app")
+		}
+		log.Printf("Resolved all the templates for app :: %s under the compositeApp...", eachApp.Metadata.Name)
+		log.Printf("sortedTemplates :: %v ", sortedTemplates)
+	}
+	log.Printf("Done with instantiation...")
+	return err
+}