HONEYCOMB-91: Create read customizer for L2FibEntry

Change-Id: I0ad5d98ba6c9442c79b21bf04be07b81d04a4595
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

3 files changed, 161 insertions, 66 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java
index b9a25974b..1db7b8a42 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java
@@ -102,7 +102,6 @@ public final class InterfaceUtils {
     }
 
     // TODO rename and move to V3poUtils
-
     /**
      * Reads first 6 bytes of supplied byte array and converts to string as Yang dictates <p> Replace later with
      * https://git.opendaylight.org/gerrit/#/c/34869/10/model/ietf/ietf-type- util/src/main/
@@ -114,13 +113,18 @@ public final class InterfaceUtils {
      * @throws IllegalArgumentException if vppPhysAddress.length < 6
      */
     public static String vppPhysAddrToYang(@Nonnull final byte[] vppPhysAddress) {
+        return vppPhysAddrToYang(vppPhysAddress, 0);
+    }
+
+    public static String vppPhysAddrToYang(@Nonnull final byte[] vppPhysAddress, int startIndex) {
         Objects.requireNonNull(vppPhysAddress, "Empty physical address bytes");
-        Preconditions.checkArgument(PHYSICAL_ADDRESS_LENGTH <= vppPhysAddress.length,
-                "Invalid physical address size %s, expected >= 6", vppPhysAddress.length);
+        final int endIndex = startIndex+PHYSICAL_ADDRESS_LENGTH;
+        Preconditions.checkArgument(endIndex <= vppPhysAddress.length,
+                "Invalid physical address size (%s) for given startIndex (%d), expected >= %d", vppPhysAddress.length, startIndex, endIndex);
         StringBuilder physAddr = new StringBuilder();
 
-        appendHexByte(physAddr, vppPhysAddress[0]);
-        for (int i = 1; i < PHYSICAL_ADDRESS_LENGTH; i++) {
+        appendHexByte(physAddr, vppPhysAddress[startIndex]);
+        for (int i = startIndex+1; i < endIndex; i++) {
             physAddr.append(":");
             appendHexByte(physAddr, vppPhysAddress[i]);
         }
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java
index a6a31e2ae..4f0b0f741 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java
@@ -20,8 +20,6 @@ import static io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils.byteToBool
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
-import com.google.common.primitives.Longs;
 import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ListReaderCustomizer;
@@ -31,13 +29,6 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import javax.annotation.Nonnull;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.L2FibFilter;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.L2FibForward;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.L2FibTableBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.l2.fib.table.L2FibEntry;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.l2.fib.table.L2FibEntryBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.l2.fib.table.L2FibEntryKey;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.BridgeDomainsBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomain;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainBuilder;
@@ -48,9 +39,6 @@ import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.openvpp.jvpp.dto.BridgeDomainDetails;
 import org.openvpp.jvpp.dto.BridgeDomainDetailsReplyDump;
 import org.openvpp.jvpp.dto.BridgeDomainDump;
-import org.openvpp.jvpp.dto.L2FibTableDump;
-import org.openvpp.jvpp.dto.L2FibTableEntry;
-import org.openvpp.jvpp.dto.L2FibTableEntryReplyDump;
 import org.openvpp.jvpp.future.FutureJVpp;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -60,13 +48,10 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
 
     private static final Logger LOG = LoggerFactory.getLogger(BridgeDomainCustomizer.class);
     private final NamingContext bdContext;
-    private final NamingContext interfaceContext;
 
-    public BridgeDomainCustomizer(@Nonnull final FutureJVpp futureJVpp, @Nonnull final NamingContext bdContext,
-                                  @Nonnull final NamingContext interfaceContext) {
+    public BridgeDomainCustomizer(@Nonnull final FutureJVpp futureJVpp, @Nonnull final NamingContext bdContext) {
         super(futureJVpp);
         this.bdContext = Preconditions.checkNotNull(bdContext, "bdContext should not be null");
-        this.interfaceContext = Preconditions.checkNotNull(interfaceContext, "interfaceContext should not be null");;
     }
 
     @Override
@@ -102,39 +87,6 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
         builder.setForward(byteToBoolean(bridgeDomainDetails.forward));
         builder.setLearn(byteToBoolean(bridgeDomainDetails.learn));
         builder.setUnknownUnicastFlood(byteToBoolean(bridgeDomainDetails.uuFlood));
-
-        final L2FibTableDump l2FibRequest = new L2FibTableDump();
-        l2FibRequest.bdId = bdId;
-        try {
-            final L2FibTableEntryReplyDump dump =
-                    getFutureJVpp().l2FibTableDump(l2FibRequest).toCompletableFuture().get();
-            final List<L2FibEntry> l2Fibs;
-
-            if(null == dump || null == dump.l2FibTableEntry) {
-                l2Fibs = Collections.emptyList();
-            } else {
-                l2Fibs = Lists.newArrayListWithCapacity(dump.l2FibTableEntry.size());
-                for (L2FibTableEntry entry : dump.l2FibTableEntry) {
-                    // entry.mac is a long value in the format 66:55:44:33:22:11:XX:XX
-                    // where mac address is 11:22:33:44:55:66
-                    final PhysAddress address = new PhysAddress(getMacAddress(Longs.toByteArray(entry.mac)));
-                    l2Fibs.add(new L2FibEntryBuilder()
-                        .setAction(byteToBoolean(entry.filterMac)
-                                ? L2FibFilter.class
-                                : L2FibForward.class)
-                        .setBridgedVirtualInterface(byteToBoolean(entry.bviMac))
-                        .setOutgoingInterface(interfaceContext.getName(entry.swIfIndex, context.getMappingContext()))
-                        .setStaticConfig(byteToBoolean(entry.staticMac))
-                        .setPhysAddress(address)
-                        .setKey(new L2FibEntryKey(address))
-                        .build());
-                }
-            }
-            builder.setL2FibTable(new L2FibTableBuilder().setL2FibEntry(l2Fibs).build());
-
-        } catch (Exception e) {
-            LOG.warn("Failed to acquire l2FibTableDump for domain id={}", bdId, e);
-        }
     }
 
     private void logBridgeDomainDetails(final BridgeDomainDetails bridgeDomainDetails) {
@@ -151,18 +103,6 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
         }
     }
 
-    // TODO move to some utility class
-    private static String getMacAddress(byte[] mac) {
-        StringBuilder sb = new StringBuilder(18);
-        for (int i=5; i>=0; --i) {
-            if (sb.length() > 0) {
-                sb.append(':');
-            }
-            sb.append(String.format("%02x", mac[i]));
-        }
-        return sb.toString();
-    }
-
     @Nonnull
     @Override
     public BridgeDomainBuilder getBuilder(@Nonnull final InstanceIdentifier<BridgeDomain> id) {
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/L2FibEntryCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/L2FibEntryCustomizer.java
new file mode 100644
index 000000000..f3393c26d
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/L2FibEntryCustomizer.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2016 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.honeycomb.v3po.translate.v3po.vppstate;
+
+import static io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceUtils.vppPhysAddrToYang;
+import static io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils.byteToBoolean;
+
+import com.google.common.base.Preconditions;
+import com.google.common.primitives.Longs;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
+import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
+import io.fd.honeycomb.v3po.translate.spi.read.ListReaderCustomizer;
+import io.fd.honeycomb.v3po.translate.util.RWUtils;
+import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
+import io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.stream.Collector;
+import java.util.stream.Collectors;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.L2FibFilter;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.L2FibForward;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.L2FibTableBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.l2.fib.table.L2FibEntry;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.l2.fib.table.L2FibEntryBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.fib.attributes.l2.fib.table.L2FibEntryKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomain;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainKey;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.openvpp.jvpp.VppBaseCallException;
+import org.openvpp.jvpp.dto.L2FibTableDump;
+import org.openvpp.jvpp.dto.L2FibTableEntry;
+import org.openvpp.jvpp.dto.L2FibTableEntryReplyDump;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class L2FibEntryCustomizer extends FutureJVppCustomizer
+        implements ListReaderCustomizer<L2FibEntry, L2FibEntryKey, L2FibEntryBuilder> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(L2FibEntryCustomizer.class);
+
+    Collector<L2FibTableEntry, ?, L2FibTableEntry> SINGLE_ITEM_COLLECTOR =
+            RWUtils.singleItemCollector();
+
+    private final NamingContext bdContext;
+    private final NamingContext interfaceContext;
+
+    public L2FibEntryCustomizer(@Nonnull final FutureJVpp futureJVpp, @Nonnull final NamingContext bdContext,
+                                @Nonnull final NamingContext interfaceContext) {
+        super(futureJVpp);
+        this.bdContext = Preconditions.checkNotNull(bdContext, "bdContext should not be null");
+        this.interfaceContext = Preconditions.checkNotNull(interfaceContext, "interfaceContext should not be null");
+    }
+
+    @Override
+    public void readCurrentAttributes(@Nonnull final InstanceIdentifier<L2FibEntry> id,
+                                      @Nonnull final L2FibEntryBuilder builder, @Nonnull final ReadContext ctx)
+            throws ReadFailedException {
+
+        final L2FibEntryKey key = id.firstKeyOf(id.getTargetType());
+        final BridgeDomainKey bridgeDomainKey = id.firstKeyOf(BridgeDomain.class);
+        final int bdId = bdContext.getIndex(bridgeDomainKey.getName(), ctx.getMappingContext());
+        LOG.debug("Reading L2 FIB entry: key={}. bridgeDomainKey={}, bdId={}", key, bridgeDomainKey, bdId);
+
+        try {
+            // TODO use cached l2FibTable
+            final L2FibTableEntry entry = dumpL2Fibs(bdId).stream().filter(e -> key.getPhysAddress()
+                    .equals(new PhysAddress(vppPhysAddrToYang(Longs.toByteArray(e.mac), 2))))
+                    .collect(SINGLE_ITEM_COLLECTOR);
+
+            builder.setAction(byteToBoolean(entry.filterMac)
+                    ? L2FibFilter.class
+                    : L2FibForward.class);
+            builder.setBridgedVirtualInterface(byteToBoolean(entry.bviMac));
+
+            if (entry.swIfIndex != -1) {
+                builder.setOutgoingInterface(interfaceContext.getName(entry.swIfIndex, ctx.getMappingContext()));
+            }
+            builder.setStaticConfig(byteToBoolean(entry.staticMac));
+            builder.setPhysAddress(key.getPhysAddress());
+            builder.setKey(key);
+        } catch (Exception e) {
+            throw new ReadFailedException(id, e);
+        }
+    }
+
+    @Nonnull
+    private List<L2FibTableEntry> dumpL2Fibs(final int bdId) throws VppBaseCallException {
+        final L2FibTableDump l2FibRequest = new L2FibTableDump();
+        l2FibRequest.bdId = bdId;
+
+        final CompletableFuture<L2FibTableEntryReplyDump> l2FibTableDumpCompletableFuture =
+                getFutureJVpp().l2FibTableDump(l2FibRequest).toCompletableFuture();
+
+        final L2FibTableEntryReplyDump dump = TranslateUtils.getReply(l2FibTableDumpCompletableFuture);
+
+        if (null == dump || null == dump.l2FibTableEntry) {
+            return Collections.emptyList();
+        } else {
+            return dump.l2FibTableEntry;
+        }
+    }
+
+    @Nonnull
+    @Override
+    public List<L2FibEntryKey> getAllIds(@Nonnull final InstanceIdentifier<L2FibEntry> id,
+                                         @Nonnull final ReadContext ctx) throws ReadFailedException {
+        final BridgeDomainKey bridgeDomainKey = id.firstKeyOf(BridgeDomain.class);
+        final int bdId = bdContext.getIndex(bridgeDomainKey.getName(), ctx.getMappingContext());
+
+        LOG.debug("Reading L2 FIB for bridge domain {} (bdId={})", bridgeDomainKey, bdId);
+        try {
+            return dumpL2Fibs(bdId).stream()
+                    .map(entry -> new L2FibEntryKey(new PhysAddress(vppPhysAddrToYang(Longs.toByteArray(entry.mac), 2)))
+                    ).collect(Collectors.toList());
+        } catch (VppBaseCallException e) {
+            throw new ReadFailedException(id, e);
+        }
+    }
+
+    @Override
+    public void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<L2FibEntry> readData) {
+        ((L2FibTableBuilder) builder).setL2FibEntry(readData);
+    }
+
+    @Nonnull
+    @Override
+    public L2FibEntryBuilder getBuilder(@Nonnull final InstanceIdentifier<L2FibEntry> id) {
+        return new L2FibEntryBuilder();
+    }
+}