initial commit
diff --git a/src/main/java/org.onosproject.xran/wrapper/LinkMap.java b/src/main/java/org.onosproject.xran/wrapper/LinkMap.java
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+/*
+ * Copyright 2015-present Open Networking Laboratory
+ *
+ * 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.onosproject.xran.wrapper;
+
+import org.onosproject.xran.XranStore;
+import org.onosproject.xran.codecs.api.CRNTI;
+import org.onosproject.xran.codecs.api.ECGI;
+import org.onosproject.xran.codecs.api.MMEUES1APID;
+import org.onosproject.xran.entities.RnibCell;
+import org.onosproject.xran.entities.RnibLink;
+import org.onosproject.xran.entities.RnibUe;
+import org.onosproject.xran.identifiers.LinkId;
+import org.slf4j.Logger;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+public class LinkMap {
+ private static final Logger log = getLogger(LinkMap.class);
+
+ private ConcurrentMap<CRNTI, MMEUES1APID> crntiMme = new ConcurrentHashMap<>();
+
+ private XranStore xranStore;
+
+ public LinkMap(XranStore xranStore) {
+ this.xranStore = xranStore;
+ }
+
+ public void putPrimaryLink(RnibCell cell, RnibUe ue) {
+ RnibLink link = new RnibLink();
+ link.setLinkId(cell, ue);
+ link.setType(RnibLink.Type.SERVING_PRIMARY);
+ xranStore.getLinksByUeId(ue.getMmeS1apId().longValue())
+ .forEach(l -> l.setType(RnibLink.Type.SERVING_SECONDARY));
+ xranStore.storeLink(link);
+ crntiMme.put(ue.getRanId(), ue.getMmeS1apId());
+ }
+
+ public RnibLink putNonServingLink(RnibCell cell, CRNTI crnti) {
+ RnibLink link = null;
+ MMEUES1APID mmeues1APID = crntiMme.get(crnti);
+
+ if (mmeues1APID != null) {
+ link = new RnibLink();
+ RnibUe ue = xranStore.getUe(mmeues1APID);
+ link.setLinkId(cell, ue);
+ link.setType(RnibLink.Type.NON_SERVING);
+ xranStore.storeLink(link);
+ } else {
+ log.error("Could not find mapping for CRNTI to UE. Aborting creation of non-serving link");
+ }
+ return link;
+ }
+
+ public RnibLink get(ECGI src, MMEUES1APID dst) {
+ if (src != null && dst != null) {
+ return xranStore.getLink(src, dst);
+ }
+ return null;
+ }
+
+ public RnibLink get(ECGI src, CRNTI dst) {
+ MMEUES1APID mmeues1APID = crntiMme.get(dst);
+
+ if (mmeues1APID != null) {
+ return xranStore.getLink(src, mmeues1APID);
+ }
+ return null;
+ }
+
+ public boolean remove(ECGI src, MMEUES1APID dst) {
+ RnibLink link = xranStore.getLink(src, dst);
+
+ if (link != null) {
+ LinkId linkId = link.getLinkId();
+ if (linkId != null) {
+ return xranStore.removeLink(linkId);
+ }
+ }
+ return false;
+ }
+
+ public boolean remove(ECGI src, CRNTI dst) {
+ MMEUES1APID mmeues1APID = crntiMme.get(dst);
+
+ RnibLink link = xranStore.getLink(src, mmeues1APID);
+ if (link != null) {
+ LinkId linkId = link.getLinkId();
+ if (linkId != null) {
+ return xranStore.removeLink(linkId);
+ }
+ }
+ return false;
+ }
+
+ public ECGI getPrimaryCell(RnibUe ue) {
+ List<RnibLink> linksByUeId = xranStore.getLinksByUeId(ue.getMmeS1apId().longValue());
+ Optional<RnibLink> primary = linksByUeId.stream().filter(l -> l.getType().equals(RnibLink.Type.SERVING_PRIMARY)).findFirst();
+
+ if (primary.isPresent()) {
+ return primary.get().getLinkId().getSource();
+ }
+ return null;
+ }
+}
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