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-rw-r--r--src/ncm/api/chainhandler.go290
1 files changed, 290 insertions, 0 deletions
diff --git a/src/ncm/api/chainhandler.go b/src/ncm/api/chainhandler.go
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+++ b/src/ncm/api/chainhandler.go
@@ -0,0 +1,290 @@
+/*
+ * 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 chainHandler struct {
+ // Interface that implements workload intent operations
+ // We will set this variable with a mock interface for testing
+ client moduleLib.ChainManager
+}
+
+func validateRoutingNetwork(r moduleLib.RoutingNetwork) error {
+ errs := validation.IsValidName(r.NetworkName)
+ if len(errs) > 0 {
+ return pkgerrors.Errorf("Invalid routing network name: %v", errs)
+ }
+
+ err := validation.IsIpv4Cidr(r.Subnet)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Invalid routing network subnet")
+ }
+
+ err = validation.IsIpv4(r.GatewayIP)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Invalid routing network gateway IP")
+ }
+
+ return nil
+}
+
+// validateNetworkChain checks that the network chain string input follows the
+// generic format: "app=app1,net1,app=app2,net2, ..... ,netN-1,app=appN"
+// assume "app=app1" can conform to validation.IsValidLabel() with an "="
+func validateNetworkChain(chain string) error {
+ elems := strings.Split(chain, ",")
+
+ // chain needs at least two apps and a network
+ if len(elems) < 3 {
+ return pkgerrors.Errorf("Network chain is too short")
+ }
+
+ // chain needs to have an odd number of elements
+ if len(elems)%2 == 0 {
+ return pkgerrors.Errorf("Invalid network chain - even number of elements")
+ }
+
+ for i, s := range elems {
+ // allows whitespace in comma separated elements
+ t := strings.TrimSpace(s)
+ // if even element, verify a=b format
+ if i%2 == 0 {
+ if strings.Index(t, "=") < 1 {
+ return pkgerrors.Errorf("Invalid deployment label element of network chain")
+ }
+ errs := validation.IsValidLabel(t)
+ if len(errs) > 0 {
+ return pkgerrors.Errorf("Invalid deployment label element: %v", errs)
+ }
+ } else {
+ errs := validation.IsValidName(t)
+ if len(errs) > 0 {
+ return pkgerrors.Errorf("Invalid network element of network chain: %v", errs)
+ }
+ }
+ }
+ return nil
+}
+
+// Check for valid format of input parameters
+func validateChainInputs(ch moduleLib.Chain) error {
+ // validate metadata
+ err := moduleLib.IsValidMetadata(ch.Metadata)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Invalid network chain metadata")
+ }
+
+ if strings.ToLower(ch.Spec.ChainType) != moduleLib.RoutingChainType {
+ return pkgerrors.Wrap(err, "Invalid network chain type")
+ }
+
+ for _, r := range ch.Spec.RoutingSpec.LeftNetwork {
+ err = validateRoutingNetwork(r)
+ if err != nil {
+ return err
+ }
+ }
+
+ for _, r := range ch.Spec.RoutingSpec.RightNetwork {
+ err = validateRoutingNetwork(r)
+ if err != nil {
+ return err
+ }
+ }
+
+ err = validateNetworkChain(ch.Spec.RoutingSpec.NetworkChain)
+ if err != nil {
+ return err
+ }
+
+ errs := validation.IsValidName(ch.Spec.RoutingSpec.Namespace)
+ if len(errs) > 0 {
+ return pkgerrors.Errorf("Invalid network chain route spec namespace: %v", errs)
+ }
+
+ return nil
+}
+
+// Create handles creation of the Chain entry in the database
+func (h chainHandler) createHandler(w http.ResponseWriter, r *http.Request) {
+ var ch moduleLib.Chain
+ 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(&ch)
+
+ 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 ch.Metadata.Name == "" {
+ http.Error(w, "Missing name in POST request", http.StatusBadRequest)
+ return
+ }
+
+ err = validateChainInputs(ch)
+ if err != nil {
+ http.Error(w, err.Error(), http.StatusBadRequest)
+ return
+ }
+
+ ret, err := h.client.CreateChain(ch, 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 Chain entry in the database
+func (h chainHandler) putHandler(w http.ResponseWriter, r *http.Request) {
+ var ch moduleLib.Chain
+ 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(&ch)
+
+ 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 ch.Metadata.Name == "" {
+ http.Error(w, "Missing name in PUT request", http.StatusBadRequest)
+ return
+ }
+
+ // Name in URL should match name in body
+ if ch.Metadata.Name != name {
+ fmt.Printf("bodyname = %v, name= %v\n", ch.Metadata.Name, name)
+ http.Error(w, "Mismatched name in PUT request", http.StatusBadRequest)
+ return
+ }
+
+ err = validateChainInputs(ch)
+ if err != nil {
+ http.Error(w, err.Error(), http.StatusBadRequest)
+ return
+ }
+
+ ret, err := h.client.CreateChain(ch, 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 Chain Name
+// Returns a Chain
+func (h chainHandler) 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.GetChains(project, compositeApp, compositeAppVersion, netControlIntent)
+ if err != nil {
+ http.Error(w, err.Error(), http.StatusInternalServerError)
+ return
+ }
+ } else {
+ ret, err = h.client.GetChain(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 Chain
+func (h chainHandler) 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.DeleteChain(name, project, compositeApp, compositeAppVersion, netControlIntent)
+ if err != nil {
+ http.Error(w, err.Error(), http.StatusInternalServerError)
+ return
+ }
+
+ w.WriteHeader(http.StatusNoContent)
+}