HC2VPP-412: add stats interfaceDump

Change-Id: Ib5430d3818af230fc16fc736ed7cbb20840f35b9
Signed-off-by: Michal Cmarada <mcmarada@cisco.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/interfacesstate/cache/InterfaceNamesDumpManagerImpl.java b/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/interfacesstate/cache/InterfaceNamesDumpManagerImpl.java
new file mode 100644
index 000000000..b0210b6b1
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/interfacesstate/cache/InterfaceNamesDumpManagerImpl.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.hc2vpp.v3po.interfacesstate.cache;
+
+import static io.fd.hc2vpp.common.translate.util.JvppReplyConsumer.INSTANCE;
+import static java.util.stream.Collectors.toMap;
+
+import io.fd.honeycomb.translate.ModificationCache;
+import io.fd.honeycomb.translate.read.ReadFailedException;
+import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
+import io.fd.honeycomb.translate.util.read.cache.EntityDumpExecutor;
+import io.fd.honeycomb.translate.util.read.cache.StaticCacheKeyFactory;
+import io.fd.jvpp.stats.dto.InterfaceName;
+import io.fd.jvpp.stats.dto.InterfaceNamesDetailsReplyDump;
+import io.fd.jvpp.stats.dto.InterfaceNamesDump;
+import io.fd.jvpp.stats.future.FutureJVppStatsFacade;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class InterfaceNamesDumpManagerImpl implements InterfaceNamesDumpManager {
+    // byNameIndex must be cached, not held as reference here, to have it destroyed with cache after transaction
+    static final String BY_NAME_INDEX_KEY = InterfaceNamesDumpManagerImpl.class.getName() + "_byNameIndex";
+    private static final Logger LOG = LoggerFactory.getLogger(InterfaceNamesDumpManagerImpl.class);
+    private final FutureJVppStatsFacade jvppStats;
+
+    private final DumpCacheManager<InterfaceNamesDetailsReplyDump, Void> fullDumpManager;
+
+    public InterfaceNamesDumpManagerImpl(final FutureJVppStatsFacade jvppStats) {
+        this.jvppStats = jvppStats;
+        fullDumpManager = fullInterfaceDumpManager(this.jvppStats,
+                new StaticCacheKeyFactory(InterfaceNamesDumpManagerImpl.class.getName() + "_dump",
+                        InterfaceNamesDetailsReplyDump.class));
+    }
+
+    private static DumpCacheManager<InterfaceNamesDetailsReplyDump, Void> fullInterfaceDumpManager(
+            final FutureJVppStatsFacade jvppStats,
+            final StaticCacheKeyFactory cacheKeyFactory) {
+        return new DumpCacheManager.DumpCacheManagerBuilder<InterfaceNamesDetailsReplyDump, Void>()
+                .withExecutor(fullInterfaceDumpExecutor(jvppStats))
+                .withCacheKeyFactory(cacheKeyFactory)
+                .acceptOnly(InterfaceNamesDetailsReplyDump.class)
+                .build();
+    }
+
+    private static EntityDumpExecutor<InterfaceNamesDetailsReplyDump, Void> fullInterfaceDumpExecutor(
+            final FutureJVppStatsFacade api) {
+        return (identifier, params) -> {
+            final InterfaceNamesDump request = new InterfaceNamesDump();
+
+            final CompletableFuture<InterfaceNamesDetailsReplyDump>
+                    interfaceNamesDetailsReplyDumpCompletableFuture =
+                    api.interfaceNamesDump(request).toCompletableFuture();
+            return INSTANCE.getReplyForRead(interfaceNamesDetailsReplyDumpCompletableFuture, identifier);
+        };
+    }
+
+    @Nonnull
+    @Override
+    public List<InterfaceName> getInterfaceNames(@Nonnull final InstanceIdentifier<?> identifier,
+                                                 @Nonnull final ModificationCache cache)
+            throws ReadFailedException {
+        LOG.debug("Reading all interface names[{}]", identifier);
+        return new ArrayList<>(initMapAndGet(identifier, cache).values());
+    }
+
+    private Map<String, InterfaceName> initMapAndGet(final InstanceIdentifier<?> identifier,
+                                                     final ModificationCache cache)
+            throws ReadFailedException {
+
+        if (!cache.containsKey(BY_NAME_INDEX_KEY)) {
+            LOG.debug("Performing dump[{}]", identifier);
+            final InterfaceNamesDetailsReplyDump dump =
+                    fullDumpManager.getDump(identifier, cache).orElse(new InterfaceNamesDetailsReplyDump());
+
+            // naming context initialization must be done here, as it is uses getName in next step, therefore it would
+            // create artificial mapping for every interface, because this happens before interface dump is processed
+            Arrays.stream(dump.interfaceNamesDetails.interfaceNames).forEach((elt) -> {
+                // Store interface name from VPP in context if not yet present
+                LOG.trace("Interface with VPP name: {} and index: {} found in VPP", elt.name, elt.swIfIndex);
+            });
+
+            final Map<String, InterfaceName> freshIndex = Arrays.stream(dump.interfaceNamesDetails.interfaceNames)
+                    .collect(toMap(detail -> detail.name, detail -> detail));
+            putMap(freshIndex, cache);
+        }
+
+        return getMap(cache);
+    }
+
+    private static Map<String, InterfaceName> getMap(final ModificationCache cache) {
+        return (Map<String, InterfaceName>) cache.get(BY_NAME_INDEX_KEY);
+    }
+
+    private static void putMap(final Map<String, InterfaceName> map, final ModificationCache cache) {
+        cache.put(BY_NAME_INDEX_KEY, map);
+    }
+}