1 files changed, 110 insertions, 0 deletions
diff --git a/openecomp-be/lib/openecomp-heat-lib/src/main/java/org/openecomp/sdc/heat/services/HeatResourceUtil.java b/openecomp-be/lib/openecomp-heat-lib/src/main/java/org/openecomp/sdc/heat/services/HeatResourceUtil.java
new file mode 100644
index 0000000000..a44b0196d4
--- /dev/null
+++ b/openecomp-be/lib/openecomp-heat-lib/src/main/java/org/openecomp/sdc/heat/services/HeatResourceUtil.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * 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 org.openecomp.sdc.heat.services;
+
+import java.util.Objects;
+import java.util.Optional;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.openecomp.sdc.heat.datatypes.model.HeatResourcesTypes;
+
+public class HeatResourceUtil {
+
+    private static final String UNDERSCORE = "_";
+    private static final String WORDS_REGEX = "(\\w+)";
+    private static final String PORT_RESOURCE_ID_REGEX_SUFFIX = "(_\\d+)*";
+    private static final String PORT_RESOURCE_ID_REGEX_PREFIX =
+            WORDS_REGEX + PORT_RESOURCE_ID_REGEX_SUFFIX;
+    private static final String PORT_INT_RESOURCE_ID_REGEX_PREFIX = PORT_RESOURCE_ID_REGEX_PREFIX
+            + UNDERSCORE + "int_"+ WORDS_REGEX + UNDERSCORE;
+    private static final String SUB_INTERFACE_INT_RESOURCE_ID_REGEX_PREFIX =
+            PORT_RESOURCE_ID_REGEX_PREFIX + UNDERSCORE + "subint_"+ WORDS_REGEX + UNDERSCORE;
+
+    public static Optional<String> evaluateNetworkRoleFromResourceId(String resourceId,
+                                                                     String resourceType) {
+        Optional<PortType> portType = getPortType(resourceType);
+        if (portType.isPresent()) {
+            String portResourceIdRegex =
+                    PORT_RESOURCE_ID_REGEX_PREFIX + UNDERSCORE + WORDS_REGEX + UNDERSCORE
+                            + portType.get().getPortTypeName() + PORT_RESOURCE_ID_REGEX_SUFFIX;
+            String portIntResourceIdRegex =
+                    PORT_INT_RESOURCE_ID_REGEX_PREFIX + portType.get().getPortTypeName()
+                            + PORT_RESOURCE_ID_REGEX_SUFFIX;
+
+            String portNetworkRole = getNetworkRole(resourceId, portResourceIdRegex);
+            String portIntNetworkRole = getNetworkRole(resourceId, portIntResourceIdRegex);
+
+            return Optional.ofNullable(Objects.nonNull(portNetworkRole)
+                    ? portNetworkRole : portIntNetworkRole);
+        }
+        return Optional.empty();
+    }
+
+    private static Optional<PortType> getPortType(String resourceType) {
+        if (resourceType.equals(
+                HeatResourcesTypes.CONTRAIL_V2_VIRTUAL_MACHINE_INTERFACE_RESOURCE_TYPE.getHeatResource())) {
+            return Optional.of(PortType.VMI);
+        } else if (resourceType.equals(
+                HeatResourcesTypes.NEUTRON_PORT_RESOURCE_TYPE.getHeatResource())) {
+            return Optional.of(PortType.PORT);
+        }
+        return Optional.empty();
+    }
+
+    public static Optional<String> extractNetworkRoleFromSubInterfaceId(String  resourceId,
+                                                                        String resourceType) {
+        Optional<PortType> portType = getPortType(resourceType);
+        if (portType.isPresent()) {
+            String subInterfaceResourceIdRegex =
+                    SUB_INTERFACE_INT_RESOURCE_ID_REGEX_PREFIX + portType.get().getPortTypeName()
+                            + PORT_RESOURCE_ID_REGEX_SUFFIX;
+
+            return Optional.ofNullable(getNetworkRole(resourceId, subInterfaceResourceIdRegex));
+        }
+        return Optional.empty();
+    }
+
+    private enum PortType {
+        PORT("port"),
+        VMI("vmi");
+
+        private String portTypeName;
+
+        PortType(String portTypeName) {
+            this.portTypeName = portTypeName;
+        }
+
+        public String getPortTypeName() {
+            return portTypeName;
+        }
+    }
+
+    private static String getNetworkRole(String portResourceId, String portIdRegex) {
+        Pattern pattern = Pattern.compile(portIdRegex);
+        Matcher matcher = pattern.matcher(portResourceId);
+        if (matcher.matches()) {
+            String networkRole = matcher.group(3);
+            //Assuming network role will not contain ONLY digits
+            if (!networkRole.matches("\\d+")) {
+                return matcher.group(3);
+            }
+        }
+        return null;
+    }
+
+}