initial commit
diff --git a/src/main/java/org.onosproject.xran/providers/UeProvider.java b/src/main/java/org.onosproject.xran/providers/UeProvider.java
new file mode 100644
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+++ b/src/main/java/org.onosproject.xran/providers/UeProvider.java
@@ -0,0 +1,124 @@
+/*
+ * 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.providers;
+
+import com.google.common.collect.Sets;
+import org.apache.felix.scr.annotations.*;
+import org.onlab.packet.VlanId;
+import org.onosproject.net.*;
+import org.onosproject.net.host.DefaultHostDescription;
+import org.onosproject.net.host.HostProvider;
+import org.onosproject.net.host.HostProviderRegistry;
+import org.onosproject.net.host.HostProviderService;
+import org.onosproject.net.provider.AbstractProvider;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.xran.codecs.api.ECGI;
+import org.onosproject.xran.controller.XranController;
+import org.onosproject.xran.entities.RnibUe;
+import org.slf4j.Logger;
+
+import java.util.Set;
+
+import static org.onosproject.net.DeviceId.*;
+import static org.onosproject.xran.entities.RnibCell.*;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Created by dimitris on 7/28/17.
+ */
+
+@Component(immediate = true)
+public class UeProvider extends AbstractProvider implements HostProvider {
+
+ private static final Logger log = getLogger(UeProvider.class);
+ private final InternalHostListener listener = new InternalHostListener();
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ private HostProviderRegistry providerRegistry;
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ private XranController controller;
+ private HostProviderService providerService;
+
+ public UeProvider() {
+ super(new ProviderId("xran", "org.onosproject.providers.cell"));
+ }
+
+ @Activate
+ public void activate() {
+ providerService = providerRegistry.register(this);
+ controller.addListener(listener);
+
+ log.info("XRAN Host Provider Started");
+ }
+
+ @Deactivate
+ public void deactivate() {
+ controller.removeListener(listener);
+ providerRegistry.unregister(this);
+
+ providerService = null;
+ log.info("XRAN Host Provider Stopped");
+ }
+
+ @Override
+ public void triggerProbe(Host host) {
+
+ }
+
+ class InternalHostListener implements XranHostListener {
+
+ @Override
+ public void hostAdded(RnibUe ue, Set<ECGI> ecgiSet) {
+ if (providerService == null) {
+ return;
+ }
+
+ if (ue == null) {
+ log.error("UE {} is not found", ue);
+ return;
+ }
+
+ try {
+ Set<HostLocation> hostLocations = Sets.newConcurrentHashSet();
+
+ ecgiSet.forEach(ecgi -> hostLocations.add(new HostLocation(deviceId(uri(ecgi)), PortNumber.portNumber(0), 0)));
+
+ SparseAnnotations annotations = DefaultAnnotations.builder()
+ .set(AnnotationKeys.NAME, "UE #" + ue.getMmeS1apId())
+ .build();
+
+ DefaultHostDescription desc = new DefaultHostDescription(
+ ue.getHostId().mac(),
+ VlanId.vlanId(VlanId.UNTAGGED),
+ hostLocations,
+ Sets.newConcurrentHashSet(),
+ true,
+ annotations
+ );
+
+ providerService.hostDetected(ue.getHostId(), desc, false);
+ } catch (Exception e) {
+ log.warn(e.getMessage());
+ e.printStackTrace();
+ }
+ }
+
+ @Override
+ public void hostRemoved(HostId id) {
+ providerService.hostVanished(id);
+ }
+ }
+}