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Diffstat (limited to 'v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/ip/Ipv4WriteUtils.java')
-rw-r--r--v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/ip/Ipv4WriteUtils.java111
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diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/ip/Ipv4WriteUtils.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/ip/Ipv4WriteUtils.java
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index 000000000..3aeb2dfaf
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+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/ip/Ipv4WriteUtils.java
@@ -0,0 +1,111 @@
+/*
+ * 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.translate.v3po.interfaces.ip;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import io.fd.honeycomb.translate.v3po.util.TranslateUtils;
+import io.fd.honeycomb.translate.v3po.util.WriteTimeoutException;
+import java.util.concurrent.CompletionStage;
+import javax.annotation.Nonnegative;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4AddressNoZone;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.openvpp.jvpp.VppBaseCallException;
+import org.openvpp.jvpp.dto.SwInterfaceAddDelAddress;
+import org.openvpp.jvpp.dto.SwInterfaceAddDelAddressReply;
+import org.openvpp.jvpp.future.FutureJVpp;
+
+/**
+ * Utility class providing Ipv4 CUD support.
+ */
+// TODO replace with interface with default methods or abstract class
+final class Ipv4WriteUtils {
+
+ private static final int DOTTED_QUAD_MASK_LENGTH = 4;
+ private static final int IPV4_ADDRESS_PART_BITS_COUNT = 8;
+ private static final int NETMASK_PART_LIMIT = 256; // 2 power to 8
+
+ private Ipv4WriteUtils() {
+ throw new UnsupportedOperationException("This utility class cannot be instantiated");
+ }
+
+ static void addDelAddress(@Nonnull final FutureJVpp futureJvpp, final boolean add, final InstanceIdentifier<?> id,
+ @Nonnegative final int ifaceId,
+ @Nonnull final Ipv4AddressNoZone address, @Nonnegative final byte prefixLength)
+ throws VppBaseCallException, WriteTimeoutException {
+ checkArgument(prefixLength > 0, "Invalid prefix length");
+ checkNotNull(address, "address should not be null");
+
+ final byte[] addressBytes = TranslateUtils.ipv4AddressNoZoneToArray(address);
+
+ final CompletionStage<SwInterfaceAddDelAddressReply> swInterfaceAddDelAddressReplyCompletionStage =
+ futureJvpp.swInterfaceAddDelAddress(
+ getSwInterfaceAddDelAddressRequest(ifaceId, TranslateUtils.booleanToByte(add) /* isAdd */,
+ (byte) 0 /* isIpv6 */, (byte) 0 /* delAll */, prefixLength, addressBytes));
+
+ TranslateUtils.getReplyForWrite(swInterfaceAddDelAddressReplyCompletionStage.toCompletableFuture(), id);
+ }
+
+ static SwInterfaceAddDelAddress getSwInterfaceAddDelAddressRequest(final int swIfc, final byte isAdd,
+ final byte ipv6, final byte deleteAll,
+ final byte length, final byte[] addr) {
+ final SwInterfaceAddDelAddress swInterfaceAddDelAddress = new SwInterfaceAddDelAddress();
+ swInterfaceAddDelAddress.swIfIndex = swIfc;
+ swInterfaceAddDelAddress.isAdd = isAdd;
+ swInterfaceAddDelAddress.isIpv6 = ipv6;
+ swInterfaceAddDelAddress.delAll = deleteAll;
+ swInterfaceAddDelAddress.address = addr;
+ swInterfaceAddDelAddress.addressLength = length;
+ return swInterfaceAddDelAddress;
+ }
+
+ /**
+ * Returns the prefix size in bits of the specified subnet mask. Example: For the subnet mask 255.255.255.128 it
+ * returns 25 while for 255.0.0.0 it returns 8. If the passed subnetMask array is not complete or contains not only
+ * leading ones, IllegalArgumentExpression is thrown
+ *
+ * @param mask the subnet mask in dot notation 255.255.255.255
+ * @return the prefix length as number of bits
+ */
+ static byte getSubnetMaskLength(final String mask) {
+ String[] maskParts = mask.split("\\.");
+
+ checkArgument(maskParts.length == DOTTED_QUAD_MASK_LENGTH,
+ "Network mask %s is not in Quad Dotted Decimal notation!", mask);
+
+ long maskAsNumber = 0;
+ for (int i = 0; i < DOTTED_QUAD_MASK_LENGTH; i++) {
+ maskAsNumber <<= IPV4_ADDRESS_PART_BITS_COUNT;
+ int value = Integer.parseInt(maskParts[i]);
+ checkArgument(value < NETMASK_PART_LIMIT, "Network mask %s contains invalid number(s) over 255!", mask);
+ checkArgument(value >= 0, "Network mask %s contains invalid negative number(s)!", mask);
+ maskAsNumber += value;
+ }
+
+ String bits = Long.toBinaryString(maskAsNumber);
+ checkArgument(bits.length() == IPV4_ADDRESS_PART_BITS_COUNT * DOTTED_QUAD_MASK_LENGTH,
+ "Incorrect network mask %s", mask);
+ final int leadingOnes = bits.indexOf('0');
+ checkArgument(leadingOnes != -1, "Broadcast address %s is not allowed!", mask);
+ checkArgument(bits.substring(leadingOnes).indexOf('1') == -1,
+ "Non-contiguous network mask %s is not allowed!", mask);
+ return (byte) leadingOnes;
+ }
+
+}