HC2VPP-395: Provide Interface statistics counters

Change-Id: If0f62b36b9d9dc6718ed62f81268ac0908f02297
Signed-off-by: Tibor Král <tibor.kral@pantheon.tech>

1 files changed, 100 insertions, 0 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/interfaces/InterfaceStatisticsEnableCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/interfaces/InterfaceStatisticsEnableCustomizer.java
new file mode 100644
index 000000000..e322e2522
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/interfaces/InterfaceStatisticsEnableCustomizer.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2019 PANTHEON.tech.
+ *
+ * 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.interfaces;
+
+import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
+import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.hc2vpp.v3po.interfacesstate.cache.InterfaceCacheStatisticsDumpManager;
+import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.honeycomb.translate.write.WriteFailedException;
+import io.fd.vpp.jvpp.VppBaseCallException;
+import io.fd.vpp.jvpp.core.dto.WantPerInterfaceCombinedStats;
+import io.fd.vpp.jvpp.core.dto.WantPerInterfaceCombinedStatsReply;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.TimeoutException;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev181128.interfaces._interface.StatisticsCollection;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class InterfaceStatisticsEnableCustomizer extends FutureJVppCustomizer implements
+        WriterCustomizer<StatisticsCollection>, JvppReplyConsumer {
+
+    private static final Logger LOG = LoggerFactory.getLogger(InterfaceStatisticsEnableCustomizer.class);
+
+    private NamingContext ifcNamingContext;
+    private InterfaceCacheStatisticsDumpManager ifcStatisticsManager;
+
+    public InterfaceStatisticsEnableCustomizer(final FutureJVppCore jvpp, final NamingContext ifcNamingContext,
+                                               final InterfaceCacheStatisticsDumpManager ifcStatisticsManager) {
+        super(jvpp);
+        this.ifcNamingContext = ifcNamingContext;
+        this.ifcStatisticsManager = ifcStatisticsManager;
+    }
+
+    @Override
+    public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<StatisticsCollection> id,
+                                       @Nonnull final StatisticsCollection dataAfter,
+                                       @Nonnull final WriteContext writeContext) throws WriteFailedException {
+
+        InterfaceKey key = id.firstKeyOf(Interface.class);
+        final int index = ifcNamingContext.getIndex(key.getName(), writeContext.getMappingContext());
+        if (!dataAfter.isStatisticsEnabled()) {
+            ifcStatisticsManager.disableInterface(index);
+        } else {
+            ifcStatisticsManager.enableInterface(index);
+        }
+        enableDisableStatisticsNotifications(index, dataAfter.isStatisticsEnabled().booleanValue());
+    }
+
+    private void enableDisableStatisticsNotifications(final int index, final boolean enable) {
+        WantPerInterfaceCombinedStats request = new WantPerInterfaceCombinedStats();
+        request.num = 1;
+        request.enableDisable = enable
+                ? (byte) 1
+                : (byte) 0;
+        request.pid = 1;
+        request.swIfs = new int[]{index};
+        final CompletionStage<WantPerInterfaceCombinedStatsReply> result =
+                this.getFutureJVpp().wantPerInterfaceCombinedStats(request);
+        try {
+            getReply(result.toCompletableFuture());
+        } catch (VppBaseCallException | TimeoutException e) {
+            String errorMsg = String.format("Unable to %s statistics notifications", enable
+                    ? "enable"
+                    : "disable");
+            LOG.warn(errorMsg, e);
+            throw new IllegalStateException(errorMsg, e);
+        }
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<StatisticsCollection> id,
+                                        @Nonnull final StatisticsCollection dataBefore,
+                                        @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        InterfaceKey key = id.firstKeyOf(Interface.class);
+        final int index = ifcNamingContext.getIndex(key.getName(), writeContext.getMappingContext());
+        enableDisableStatisticsNotifications(index, false);
+        this.ifcStatisticsManager.disableInterface(index);
+    }
+}