ONOS-7050 Refactored P4Runtime FRP to use distributed stores
It uses the PI translation store and a newly introduced P4Runtime device
mirror.
Change-Id: Id2031af5e9bbdc8be4ec6967b867f97d35d54ab0
diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/AbstractDistributedP4RuntimeMirror.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/AbstractDistributedP4RuntimeMirror.java
new file mode 100644
index 0000000..be0b0b3
--- /dev/null
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/AbstractDistributedP4RuntimeMirror.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.drivers.p4runtime.mirror;
+
+import com.google.common.annotations.Beta;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.pi.runtime.PiEntity;
+import org.onosproject.net.pi.runtime.PiHandle;
+import org.onosproject.store.service.EventuallyConsistentMap;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.WallClockTimestamp;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Abstract implementation of a distributed P4Runtime mirror, backed by an
+ * {@link EventuallyConsistentMap}.
+ *
+ * @param <H> handle class
+ * @param <E> entry class
+ */
+@Beta
+@Component(immediate = true)
+public abstract class AbstractDistributedP4RuntimeMirror
+ <H extends PiHandle, E extends PiEntity>
+ implements P4RuntimeMirror<H, E> {
+
+ private final Logger log = getLogger(getClass());
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ private StorageService storageService;
+
+ private EventuallyConsistentMap<H, TimedEntry<E>> mirrorMap;
+
+ @Activate
+ public void activate() {
+ mirrorMap = storageService
+ .<H, TimedEntry<E>>eventuallyConsistentMapBuilder()
+ .withName(mapName())
+ .withSerializer(storeSerializer())
+ .withTimestampProvider((k, v) -> new WallClockTimestamp())
+ .build();
+ log.info("Started");
+ }
+
+ abstract String mapName();
+
+ abstract KryoNamespace storeSerializer();
+
+ @Deactivate
+ public void deactivate() {
+ mirrorMap = null;
+ log.info("Stopped");
+ }
+
+ @Override
+ public Collection<TimedEntry<E>> getAll(DeviceId deviceId) {
+ checkNotNull(deviceId);
+ return mirrorMap.entrySet().stream()
+ .filter(entry -> entry.getKey().deviceId().equals(deviceId))
+ .map(Map.Entry::getValue)
+ .collect(Collectors.toList());
+ }
+
+ @Override
+ public TimedEntry<E> get(H handle) {
+ checkNotNull(handle);
+ return mirrorMap.get(handle);
+ }
+
+ @Override
+ public void put(H handle, E entry) {
+ checkNotNull(handle);
+ checkNotNull(entry);
+ final long now = new WallClockTimestamp().unixTimestamp();
+ final TimedEntry<E> timedEntry = new TimedEntry<>(now, entry);
+ mirrorMap.put(handle, timedEntry);
+ }
+
+ @Override
+ public void remove(H handle) {
+ checkNotNull(handle);
+ mirrorMap.remove(handle);
+ }
+
+}