6 files changed, 152 insertions, 7 deletions
diff --git a/src/orchestrator/pkg/infra/db/mongo.go b/src/orchestrator/pkg/infra/db/mongo.go
index a344aa1c..b33d6c65 100644
--- a/src/orchestrator/pkg/infra/db/mongo.go
+++ b/src/orchestrator/pkg/infra/db/mongo.go
@@ -49,7 +49,7 @@ type MongoCollection interface {
 		opts ...*options.FindOptions) (*mongo.Cursor, error)
 	UpdateOne(ctx context.Context, filter interface{}, update interface{},
 		opts ...*options.UpdateOptions) (*mongo.UpdateResult, error)
-        CountDocuments(ctx context.Context, filter interface{},
+	CountDocuments(ctx context.Context, filter interface{},
 		opts ...*options.CountOptions) (int64, error)
 }
 
@@ -587,4 +587,3 @@ func (m *MongoStore) Remove(coll string, key Key) error {
 	}
 	return nil
 }
-
diff --git a/src/orchestrator/pkg/infra/db/store.go b/src/orchestrator/pkg/infra/db/store.go
index e87722cd..9c6532f1 100644
--- a/src/orchestrator/pkg/infra/db/store.go
+++ b/src/orchestrator/pkg/infra/db/store.go
@@ -59,7 +59,7 @@ type Store interface {
 	// Find the document(s) with key and get the tag values from the document(s)
 	Find(coll string, key Key, tag string) ([][]byte, error)
 
-        // Removes the document(s) matching the key if no child reference in collection
+	// Removes the document(s) matching the key if no child reference in collection
 	Remove(coll string, key Key) error
 
 	// Remove all the document(s) matching the key
diff --git a/src/orchestrator/pkg/module/app.go b/src/orchestrator/pkg/module/app.go
index 1e1a5974..40659de8 100644
--- a/src/orchestrator/pkg/module/app.go
+++ b/src/orchestrator/pkg/module/app.go
@@ -38,6 +38,7 @@ type AppMetaData struct {
 }
 
 //AppContent contains fileContent
+// TODO : This should have been []byte
 type AppContent struct {
 	FileContent string
 }
diff --git a/src/orchestrator/pkg/module/composite_profile.go b/src/orchestrator/pkg/module/composite_profile.go
index dca2116a..25a9721c 100644
--- a/src/orchestrator/pkg/module/composite_profile.go
+++ b/src/orchestrator/pkg/module/composite_profile.go
@@ -121,7 +121,7 @@ func (c *CompositeProfileClient) CreateCompositeProfile(cpf CompositeProfile, p
 	return cpf, nil
 }
 
-// GetCompositeProfile shall take arguments - name of the composite profile, name of //// the project, name of the composite app and version of the composite app. It shall return the CompositeProfile if its present.
+// GetCompositeProfile shall take arguments - name of the composite profile, name of the project, name of the composite app and version of the composite app. It shall return the CompositeProfile if its present.
 func (c *CompositeProfileClient) GetCompositeProfile(cpf string, p string, ca string, v string) (CompositeProfile, error) {
 	key := CompositeProfileKey{
 		Name:         cpf,
@@ -147,7 +147,7 @@ func (c *CompositeProfileClient) GetCompositeProfile(cpf string, p string, ca st
 	return CompositeProfile{}, pkgerrors.New("Error getting CompositeProfile")
 }
 
-// GetCompositeProfile shall take arguments - name of the composite profile, name of //// the project, name of the composite app and version of the composite app. It shall return the CompositeProfile if its present.
+// GetCompositeProfiles shall take arguments - name of the project, name of the composite profile and version of the composite app. It shall return an array of CompositeProfile.
 func (c *CompositeProfileClient) GetCompositeProfiles(p string, ca string, v string) ([]CompositeProfile, error) {
 	key := CompositeProfileKey{
 		Name:         "",
@@ -175,7 +175,7 @@ func (c *CompositeProfileClient) GetCompositeProfiles(p string, ca string, v str
 	return resp, nil
 }
 
-// DeleteCompositeProfile the intent from the database
+// DeleteCompositeProfile deletes the compsiteApp profile from the database
 func (c *CompositeProfileClient) DeleteCompositeProfile(cpf string, p string, ca string, v string) error {
 	key := CompositeProfileKey{
 		Name:         cpf,
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
+}
diff --git a/src/orchestrator/pkg/module/module.go b/src/orchestrator/pkg/module/module.go
index c697bbff..e05b8753 100644
--- a/src/orchestrator/pkg/module/module.go
+++ b/src/orchestrator/pkg/module/module.go
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 Intel Corporation, Inc
+ * 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.
@@ -29,6 +29,7 @@ type Client struct {
 	CompositeProfile       *CompositeProfileClient
 	AppProfile             *AppProfileClient
 	// Add Clients for API's here
+	Instantiation *InstantiationClient
 }
 
 // NewClient creates a new client for using the services
@@ -45,5 +46,6 @@ func NewClient() *Client {
 	c.CompositeProfile = NewCompositeProfileClient()
 	c.AppProfile = NewAppProfileClient()
 	// Add Client API handlers here
+	c.Instantiation = NewInstantiationClient()
 	return c
 }