APIs for network, workload and interface intents

Includes network controller intent and underlying
network workload intent and workload interface
intent APIs.

Issue-ID: MULTICLOUD-1029
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>
Change-Id: I9bb34e42785b16f39af81335b1f94dd5bb15d931

1 files changed, 218 insertions, 0 deletions

diff --git a/src/ncm/api/workloadintenthandler.go b/src/ncm/api/workloadintenthandler.go
new file mode 100644
index 00000000..f1d0093d
--- /dev/null
+++ b/src/ncm/api/workloadintenthandler.go
@@ -0,0 +1,218 @@
+/*
+ * 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 api
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	moduleLib "github.com/onap/multicloud-k8s/src/ncm/pkg/module"
+	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/validation"
+	pkgerrors "github.com/pkg/errors"
+
+	"github.com/gorilla/mux"
+)
+
+// Used to store backend implementations objects
+// Also simplifies mocking for unit testing purposes
+type workloadintentHandler struct {
+	// Interface that implements workload intent operations
+	// We will set this variable with a mock interface for testing
+	client moduleLib.WorkloadIntentManager
+}
+
+// Check for valid format of input parameters
+func validateWorkloadIntentInputs(wi moduleLib.WorkloadIntent) error {
+	// validate metadata
+	err := moduleLib.IsValidMetadata(wi.Metadata)
+	if err != nil {
+		return pkgerrors.Wrap(err, "Invalid network controller intent metadata")
+	}
+
+	errs := validation.IsValidName(wi.Spec.AppName)
+	if len(errs) > 0 {
+		return pkgerrors.Errorf("Invalid application name = [%v], errors: %v", wi.Spec.AppName, errs)
+	}
+
+	errs = validation.IsValidName(wi.Spec.WorkloadResource)
+	if len(errs) > 0 {
+		return pkgerrors.Errorf("Invalid workload resource = [%v], errors: %v", wi.Spec.WorkloadResource, errs)
+	}
+
+	errs = validation.IsValidName(wi.Spec.Type)
+	if len(errs) > 0 {
+		return pkgerrors.Errorf("Invalid workload type = [%v], errors: %v", wi.Spec.Type, errs)
+	}
+	return nil
+}
+
+// Create handles creation of the Network entry in the database
+func (h workloadintentHandler) createHandler(w http.ResponseWriter, r *http.Request) {
+	var wi moduleLib.WorkloadIntent
+	vars := mux.Vars(r)
+	project := vars["project"]
+	compositeApp := vars["composite-app-name"]
+	compositeAppVersion := vars["version"]
+	netControlIntent := vars["net-control-intent"]
+
+	err := json.NewDecoder(r.Body).Decode(&wi)
+
+	switch {
+	case err == io.EOF:
+		http.Error(w, "Empty body", http.StatusBadRequest)
+		return
+	case err != nil:
+		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
+		return
+	}
+
+	// Name is required.
+	if wi.Metadata.Name == "" {
+		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
+		return
+	}
+
+	err = validateWorkloadIntentInputs(wi)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	ret, err := h.client.CreateWorkloadIntent(wi, project, compositeApp, compositeAppVersion, netControlIntent, false)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	err = json.NewEncoder(w).Encode(ret)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+// Put handles creation/update of the Network entry in the database
+func (h workloadintentHandler) putHandler(w http.ResponseWriter, r *http.Request) {
+	var wi moduleLib.WorkloadIntent
+	vars := mux.Vars(r)
+	name := vars["name"]
+	project := vars["project"]
+	compositeApp := vars["composite-app-name"]
+	compositeAppVersion := vars["version"]
+	netControlIntent := vars["net-control-intent"]
+
+	err := json.NewDecoder(r.Body).Decode(&wi)
+
+	switch {
+	case err == io.EOF:
+		http.Error(w, "Empty body", http.StatusBadRequest)
+		return
+	case err != nil:
+		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
+		return
+	}
+
+	// Name is required.
+	if wi.Metadata.Name == "" {
+		http.Error(w, "Missing name in PUT request", http.StatusBadRequest)
+		return
+	}
+
+	// Name in URL should match name in body
+	if wi.Metadata.Name != name {
+		fmt.Printf("bodyname = %v, name= %v\n", wi.Metadata.Name, name)
+		http.Error(w, "Mismatched name in PUT request", http.StatusBadRequest)
+		return
+	}
+
+	err = validateWorkloadIntentInputs(wi)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	ret, err := h.client.CreateWorkloadIntent(wi, project, compositeApp, compositeAppVersion, netControlIntent, true)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	err = json.NewEncoder(w).Encode(ret)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+// Get handles GET operations on a particular Network Name
+// Returns a Network
+func (h workloadintentHandler) getHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	name := vars["name"]
+	project := vars["project"]
+	compositeApp := vars["composite-app-name"]
+	compositeAppVersion := vars["version"]
+	netControlIntent := vars["net-control-intent"]
+	var ret interface{}
+	var err error
+
+	if len(name) == 0 {
+		ret, err = h.client.GetWorkloadIntents(project, compositeApp, compositeAppVersion, netControlIntent)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	} else {
+		ret, err = h.client.GetWorkloadIntent(name, project, compositeApp, compositeAppVersion, netControlIntent)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	err = json.NewEncoder(w).Encode(ret)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+// Delete handles DELETE operations on a particular Network  Name
+func (h workloadintentHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	name := vars["name"]
+	project := vars["project"]
+	compositeApp := vars["composite-app-name"]
+	compositeAppVersion := vars["version"]
+	netControlIntent := vars["net-control-intent"]
+
+	err := h.client.DeleteWorkloadIntent(name, project, compositeApp, compositeAppVersion, netControlIntent)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}