Add Network and Provider Network Intent API support

Add API for CRUD operations to manage network
and provider-network intent resources.

Issue-ID: MULTICLOUD-1029
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>
Change-Id: If3c71691b3825db50eacdb0ea87b0d5c436ad80f

3 files changed, 518 insertions, 4 deletions

diff --git a/src/ncm/api/api.go b/src/ncm/api/api.go
index c26f54e9..34b46c67 100644
--- a/src/ncm/api/api.go
+++ b/src/ncm/api/api.go
@@ -25,7 +25,7 @@ import (
 
 var moduleClient *moduleLib.Client
 
-// for the given client and testClient, if the testClient is not null and
+// For the given client and testClient, if the testClient is not null and
 // implements the client manager interface corresponding to client, then
 // return the testClient, otherwise return the client.
 func setClient(client, testClient interface{}) interface{} {
@@ -37,6 +37,20 @@ func setClient(client, testClient interface{}) interface{} {
 				return c
 			}
 		}
+	case *moduleLib.NetworkClient:
+		if testClient != nil && reflect.TypeOf(testClient).Implements(reflect.TypeOf((*moduleLib.NetworkManager)(nil)).Elem()) {
+			c, ok := testClient.(moduleLib.NetworkManager)
+			if ok {
+				return c
+			}
+		}
+	case *moduleLib.ProviderNetClient:
+		if testClient != nil && reflect.TypeOf(testClient).Implements(reflect.TypeOf((*moduleLib.ProviderNetManager)(nil)).Elem()) {
+			c, ok := testClient.(moduleLib.ProviderNetManager)
+			if ok {
+				return c
+			}
+		}
 	default:
 		fmt.Printf("unknown type %T\n", cl)
 	}
@@ -49,12 +63,11 @@ func NewRouter(testClient interface{}) *mux.Router {
 
 	moduleClient = moduleLib.NewClient()
 
+	router := mux.NewRouter().PathPrefix("/v2").Subrouter()
+
 	clusterHandler := clusterHandler{
 		client: setClient(moduleClient.Cluster, testClient).(moduleLib.ClusterManager),
 	}
-
-	router := mux.NewRouter().PathPrefix("/v2").Subrouter()
-
 	router.HandleFunc("/cluster-providers", clusterHandler.createClusterProviderHandler).Methods("POST")
 	router.HandleFunc("/cluster-providers", clusterHandler.getClusterProviderHandler).Methods("GET")
 	router.HandleFunc("/cluster-providers/{name}", clusterHandler.getClusterProviderHandler).Methods("GET")
@@ -72,5 +85,23 @@ func NewRouter(testClient interface{}) *mux.Router {
 	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/kv-pairs/{kvpair}", clusterHandler.getClusterKvPairsHandler).Methods("GET")
 	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/kv-pairs/{kvpair}", clusterHandler.deleteClusterKvPairsHandler).Methods("DELETE")
 
+	networkHandler := networkHandler{
+		client: setClient(moduleClient.Network, testClient).(moduleLib.NetworkManager),
+	}
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/networks", networkHandler.createNetworkHandler).Methods("POST")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/networks", networkHandler.getNetworkHandler).Methods("GET")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/networks/{name}", networkHandler.putNetworkHandler).Methods("PUT")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/networks/{name}", networkHandler.getNetworkHandler).Methods("GET")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/networks/{name}", networkHandler.deleteNetworkHandler).Methods("DELETE")
+
+	providernetHandler := providernetHandler{
+		client: setClient(moduleClient.ProviderNet, testClient).(moduleLib.ProviderNetManager),
+	}
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/provider-networks", providernetHandler.createProviderNetHandler).Methods("POST")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/provider-networks", providernetHandler.getProviderNetHandler).Methods("GET")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/provider-networks/{name}", providernetHandler.putProviderNetHandler).Methods("PUT")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/provider-networks/{name}", providernetHandler.getProviderNetHandler).Methods("GET")
+	router.HandleFunc("/cluster-providers/{provider-name}/clusters/{cluster-name}/provider-networks/{name}", providernetHandler.deleteProviderNetHandler).Methods("DELETE")
+
 	return router
 }
diff --git a/src/ncm/api/networkhandler.go b/src/ncm/api/networkhandler.go
new file mode 100644
index 00000000..01d077a7
--- /dev/null
+++ b/src/ncm/api/networkhandler.go
@@ -0,0 +1,215 @@
+/*
+ * 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 networkHandler struct {
+	// Interface that implements Cluster operations
+	// We will set this variable with a mock interface for testing
+	client moduleLib.NetworkManager
+}
+
+// Check for valid format of input parameters
+func validateNetworkInputs(p moduleLib.Network) error {
+	// validate name
+	errs := validation.IsValidName(p.Metadata.Name)
+	if len(errs) > 0 {
+		return pkgerrors.Errorf("Invalid network name - name=[%v], errors: %v", p.Metadata.Name, errs)
+	}
+
+	// validate cni type
+	found := false
+	for _, val := range moduleLib.CNI_TYPES {
+		if p.Spec.CniType == val {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return pkgerrors.Errorf("Invalid cni type: %v", p.Spec.CniType)
+	}
+
+	subnets := p.Spec.Ipv4Subnets
+	for _, subnet := range subnets {
+		err := moduleLib.ValidateSubnet(subnet)
+		if err != nil {
+			return pkgerrors.Wrap(err, "invalid subnet")
+		}
+	}
+	return nil
+}
+
+// Create handles creation of the Network entry in the database
+func (h networkHandler) createNetworkHandler(w http.ResponseWriter, r *http.Request) {
+	var p moduleLib.Network
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+
+	err := json.NewDecoder(r.Body).Decode(&p)
+
+	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 p.Metadata.Name == "" {
+		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
+		return
+	}
+
+	err = validateNetworkInputs(p)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	ret, err := h.client.CreateNetwork(p, clusterProvider, cluster, 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 networkHandler) putNetworkHandler(w http.ResponseWriter, r *http.Request) {
+	var p moduleLib.Network
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+	name := vars["name"]
+
+	err := json.NewDecoder(r.Body).Decode(&p)
+
+	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 p.Metadata.Name == "" {
+		http.Error(w, "Missing name in PUT request", http.StatusBadRequest)
+		return
+	}
+
+	// Name in URL should match name in body
+	if p.Metadata.Name != name {
+		fmt.Printf("bodyname = %v, name= %v\n", p.Metadata.Name, name)
+		http.Error(w, "Mismatched name in PUT request", http.StatusBadRequest)
+		return
+	}
+
+	err = validateNetworkInputs(p)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	ret, err := h.client.CreateNetwork(p, clusterProvider, cluster, 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 networkHandler) getNetworkHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+	name := vars["name"]
+	var ret interface{}
+	var err error
+
+	if len(name) == 0 {
+		ret, err = h.client.GetNetworks(clusterProvider, cluster)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	} else {
+		ret, err = h.client.GetNetwork(name, clusterProvider, cluster)
+		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 networkHandler) deleteNetworkHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+	name := vars["name"]
+
+	err := h.client.DeleteNetwork(name, clusterProvider, cluster)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}
diff --git a/src/ncm/api/providernethandler.go b/src/ncm/api/providernethandler.go
new file mode 100644
index 00000000..b38a16c5
--- /dev/null
+++ b/src/ncm/api/providernethandler.go
@@ -0,0 +1,268 @@
+/*
+ * 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"
+	"strings"
+
+	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 providernetHandler struct {
+	// Interface that implements Cluster operations
+	// We will set this variable with a mock interface for testing
+	client moduleLib.ProviderNetManager
+}
+
+// Check for valid format of input parameters
+func validateProviderNetInputs(p moduleLib.ProviderNet) error {
+	// validate name
+	errs := validation.IsValidName(p.Metadata.Name)
+	if len(errs) > 0 {
+		return pkgerrors.Errorf("Invalid provider network name=[%v], errors: %v", p.Metadata.Name, errs)
+	}
+
+	// validate cni type
+	found := false
+	for _, val := range moduleLib.CNI_TYPES {
+		if p.Spec.CniType == val {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return pkgerrors.Errorf("Invalid cni type: %v", p.Spec.CniType)
+	}
+
+	// validate the provider network type
+	found = false
+	for _, val := range moduleLib.PROVIDER_NET_TYPES {
+		if strings.ToUpper(p.Spec.ProviderNetType) == val {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return pkgerrors.Errorf("Invalid provider network type: %v", p.Spec.ProviderNetType)
+	}
+
+	// validate the subnets
+	subnets := p.Spec.Ipv4Subnets
+	for _, subnet := range subnets {
+		err := moduleLib.ValidateSubnet(subnet)
+		if err != nil {
+			return pkgerrors.Wrap(err, "invalid subnet")
+		}
+	}
+
+	// validate the VLAN ID
+	errs = validation.IsValidNumber(p.Spec.Vlan.VlanId, 0, 4095)
+	if len(errs) > 0 {
+		return pkgerrors.Errorf("Invalid VlAN ID %v - error: %v", p.Spec.Vlan.VlanId, errs)
+	}
+
+	// validate the VLAN Node Selector value
+	expectLabels := false
+	found = false
+	for _, val := range moduleLib.VLAN_NODE_SELECTORS {
+		if strings.ToLower(p.Spec.Vlan.VlanNodeSelector) == val {
+			found = true
+			if val == moduleLib.VLAN_NODE_SPECIFIC {
+				expectLabels = true
+			}
+			break
+		}
+	}
+	if !found {
+		return pkgerrors.Errorf("Invalid VlAN Node Selector %v", p.Spec.Vlan.VlanNodeSelector)
+	}
+
+	// validate the node label list
+	gotLabels := false
+	for _, label := range p.Spec.Vlan.NodeLabelList {
+		errs = validation.IsValidLabel(label)
+		if len(errs) > 0 {
+			return pkgerrors.Errorf("Invalid Label=%v - errors: %v", label, errs)
+		}
+		gotLabels = true
+	}
+
+	// Need at least one label if node selector value was "specific"
+	// (if selector is "any" - don't care if labels were supplied or not
+	if expectLabels && !gotLabels {
+		return pkgerrors.Errorf("Node Labels required for VlAN node selector \"%v\"", moduleLib.VLAN_NODE_SPECIFIC)
+	}
+
+	return nil
+}
+
+// Create handles creation of the ProviderNet entry in the database
+func (h providernetHandler) createProviderNetHandler(w http.ResponseWriter, r *http.Request) {
+	var p moduleLib.ProviderNet
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+
+	err := json.NewDecoder(r.Body).Decode(&p)
+
+	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 p.Metadata.Name == "" {
+		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
+		return
+	}
+
+	err = validateProviderNetInputs(p)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	ret, err := h.client.CreateProviderNet(p, clusterProvider, cluster, 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 ProviderNet entry in the database
+func (h providernetHandler) putProviderNetHandler(w http.ResponseWriter, r *http.Request) {
+	var p moduleLib.ProviderNet
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+	name := vars["name"]
+
+	err := json.NewDecoder(r.Body).Decode(&p)
+
+	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 p.Metadata.Name == "" {
+		http.Error(w, "Missing name in PUT request", http.StatusBadRequest)
+		return
+	}
+
+	// Name in URL should match name in body
+	if p.Metadata.Name != name {
+		fmt.Printf("bodyname = %v, name= %v\n", p.Metadata.Name, name)
+		http.Error(w, "Mismatched name in PUT request", http.StatusBadRequest)
+		return
+	}
+
+	err = validateProviderNetInputs(p)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	ret, err := h.client.CreateProviderNet(p, clusterProvider, cluster, 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 ProviderNet Name
+// Returns a ProviderNet
+func (h providernetHandler) getProviderNetHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+	name := vars["name"]
+	var ret interface{}
+	var err error
+
+	if len(name) == 0 {
+		ret, err = h.client.GetProviderNets(clusterProvider, cluster)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	} else {
+		ret, err = h.client.GetProviderNet(name, clusterProvider, cluster)
+		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 ProviderNet  Name
+func (h providernetHandler) deleteProviderNetHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	clusterProvider := vars["provider-name"]
+	cluster := vars["cluster-name"]
+	name := vars["name"]
+
+	err := h.client.DeleteProviderNet(name, clusterProvider, cluster)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}