HONEYCOMB-75 - Lisp implemetation

Rebased on final minimal distro

Change-Id: Ib71fc59e62dda4633f4f79c5c7417a4aaf02a177
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

2 files changed, 270 insertions, 0 deletions

diff --git a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/TranslateUtils.java b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/TranslateUtils.java
index 0902064eb..95b07743f 100644
--- a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/TranslateUtils.java
+++ b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/TranslateUtils.java
@@ -17,6 +17,8 @@
 package io.fd.honeycomb.translate.v3po.util;
 
 import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Preconditions.checkState;
 
 import com.google.common.base.Splitter;
 import com.google.common.net.InetAddresses;
@@ -28,10 +30,21 @@ import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 import java.util.function.BiConsumer;
+import java.util.stream.Collectors;
 import javax.annotation.Nonnegative;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+import org.apache.commons.codec.DecoderException;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.lang3.StringUtils;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4AddressNoZone;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6AddressNoZone;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Prefix;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.openvpp.jvpp.VppBaseCallException;
 import org.openvpp.jvpp.dto.JVppReply;
@@ -102,6 +115,236 @@ public final class TranslateUtils {
         }
     }
 
+    public static final byte[] ipAddressToArray(IpAddress address) {
+        checkNotNull(address, "Cannot resolve null adddress");
+
+        if (isIpv6(address)) {
+            return ipv6AddressNoZoneToArray(new Ipv6AddressNoZone(address.getIpv6Address()));
+        } else {
+            return ipv4AddressNoZoneToArray(new Ipv4AddressNoZone(address.getIpv4Address()));
+        }
+    }
+
+    /**
+     * Creates address array from address part of {@link Ipv4Prefix}
+     */
+    public static byte[] ipv4AddressPrefixToArray(@Nonnull final Ipv4Prefix ipv4Prefix) {
+        checkNotNull(ipv4Prefix, "Cannot convert null prefix");
+
+        byte[] retval = new byte[4];
+        String[] address = ipv4Prefix.getValue().substring(0, ipv4Prefix.getValue().indexOf('/')).split("\\.");
+
+        for (int d = 0; d < 4; d++) {
+            retval[d] = (byte) (Short.parseShort(address[d]) & 0xff);
+        }
+        return retval;
+    }
+
+    /**
+     * Converts {@link IpAddress} to array representing {@link Ipv4Address} or {@link Ipv6Address}
+     */
+    public static byte[] ipAddressToArray(boolean isIpv6, @Nonnull IpAddress address) {
+        checkNotNull(address, "Cannot convert null Address");
+
+        if (isIpv6) {
+            return ipv6AddressNoZoneToArray(new Ipv6AddressNoZone(address.getIpv6Address()));
+        } else {
+            return ipv4AddressNoZoneToArray(new Ipv4AddressNoZone(address.getIpv4Address()));
+        }
+    }
+
+    /**
+     * Converts array bytes to {@link IpAddress}
+     */
+    @Nonnull
+    public static IpAddress arrayToIpAddress(boolean isIpv6, byte[] ip) {
+        if (isIpv6) {
+            return new IpAddress(arrayToIpv6AddressNoZone(ip));
+        } else {
+            return new IpAddress(arrayToIpv4AddressNoZone(ip));
+        }
+    }
+
+    /**
+     * Extracts {@link Ipv4Prefix} prefix
+     */
+    public static byte extractPrefix(Ipv4Prefix data) {
+        checkNotNull(data, "Cannot extract from null");
+
+        return Byte.valueOf(data.getValue().substring(data.getValue().indexOf('/') + 1));
+    }
+
+    /**
+     * Converts byte array to {@link Ipv4Prefix} with specified prefixLength
+     */
+    public static Ipv4Prefix arrayToIpv4Prefix(final byte[] address, byte prefixLength) {
+        Ipv4AddressNoZone addressPart = arrayToIpv4AddressNoZone(address);
+
+        return new Ipv4Prefix(addressPart.getValue().concat("/").concat(String.valueOf(prefixLength)));
+    }
+
+    /**
+     * Transform Ipv6 address to a byte array acceptable by VPP. VPP expects incoming byte array to be in the same order
+     * as the address.
+     *
+     * @return byte array with address bytes
+     */
+    public static byte[] ipv6AddressNoZoneToArray(@Nonnull final Ipv6AddressNoZone ipv6Addr) {
+        byte[] retval = new byte[16];
+
+        //splits address and add ommited zeros for easier parsing
+        List<String> segments = Arrays.asList(ipv6Addr.getValue().split(":"))
+                .stream()
+                .map(segment ->  StringUtils.repeat('0',4-segment.length())+segment)
+                .collect(Collectors.toList());
+
+        byte index = 0;
+        for (String segment : segments) {
+
+            String firstPart =segment.substring(0, 2);
+            String secondPart = segment.substring(2);
+
+            //first part should be ommited
+            if("00".equals(firstPart)){
+                index++;
+            }else{
+                retval[index++] = ((byte) Short.parseShort(firstPart, 16));
+            }
+
+            retval[index++] = ((byte) Short.parseShort(secondPart, 16));
+        }
+
+        return retval;
+    }
+
+    /**
+     * Creates address array from address part of {@link Ipv6Prefix}
+     */
+    public static byte[] ipv6AddressPrefixToArray(@Nonnull final Ipv6Prefix ipv4Prefix) {
+        checkNotNull(ipv4Prefix, "Cannot convert null prefix");
+
+        return ipv6AddressNoZoneToArray(new Ipv6AddressNoZone(
+                new Ipv6Address(ipv4Prefix.getValue().substring(0, ipv4Prefix.getValue().indexOf('/')))));
+    }
+
+    /**
+     * Extracts {@link Ipv6Prefix} prefix
+     */
+    public static byte extractPrefix(Ipv6Prefix data) {
+        checkNotNull(data, "Cannot extract from null");
+
+        return Byte.valueOf(data.getValue().substring(data.getValue().indexOf('/') + 1));
+    }
+
+    /**
+     * Converts byte array to {@link Ipv6Prefix} with specified prefixLength
+     */
+    public static Ipv6Prefix arrayToIpv6Prefix(final byte[] address, byte prefixLength) {
+        Ipv6AddressNoZone addressPart = arrayToIpv6AddressNoZone(address);
+
+        return new Ipv6Prefix(addressPart.getValue().concat("/").concat(String.valueOf(prefixLength)));
+    }
+
+    /**
+     * Parse byte array returned by VPP representing an Ipv6 address. Vpp returns IP byte arrays in reversed order.
+     *
+     * @return Ipv46ddressNoZone containing string representation of IPv6 address constructed from submitted bytes. No
+     * change in order.
+     */
+    @Nonnull
+    public static Ipv6AddressNoZone arrayToIpv6AddressNoZone(@Nonnull byte[] ip) {
+        checkArgument(ip.length == 16, "Illegal array length");
+
+        try {
+            return new Ipv6AddressNoZone(InetAddresses.toAddrString(InetAddresses.fromLittleEndianByteArray(ip)));
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException("Unable to parse ipv6", e);
+        }
+    }
+
+
+    /**
+     * Parse byte array returned by VPP representing an Ipv6 address. Vpp returns IP byte arrays in natural order.
+     *
+     * @return Ipv46ddressNoZone containing string representation of IPv6 address constructed from submitted bytes. No
+     * change in order.
+     */
+    @Nonnull
+    public static Ipv6AddressNoZone arrayToIpv6AddressNoZoneReversed(@Nonnull byte[] ip) {
+        checkArgument(ip.length == 16, "Illegal array length");
+
+        ip = reverseBytes(ip);
+
+        try {
+            return new Ipv6AddressNoZone(InetAddresses.toAddrString(InetAddresses.fromLittleEndianByteArray(ip)));
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException("Unable to parse ipv6", e);
+        }
+    }
+
+    /**
+     * Converts byte array to address string ,not separated with ":"
+     */
+    public static String byteArrayToMacUnseparated(byte[] address) {
+        checkArgument(address.length == 6, "Illegal array length");
+        return Hex.encodeHexString(address);
+    }
+
+    /**
+     * Converts byte array to address string ,separated with ":"
+     */
+    public static String byteArrayToMacSeparated(byte[] address) {
+        checkArgument(address.length == 6, "Illegal array length");
+
+        String unseparatedAddress = Hex.encodeHexString(address);
+        String separated = "";
+
+        for (int i = 0; i < unseparatedAddress.length(); i = i + 2) {
+            if (i == (unseparatedAddress.length() - 2)) {
+                separated = separated + unseparatedAddress.substring(0 + i, 2 + i);
+            } else {
+                separated = separated + unseparatedAddress.substring(0 + i, 2 + i) + ":";
+            }
+        }
+
+        return separated;
+    }
+
+    /**
+     * Converts MAC string to byte array
+     * */
+    public static byte[] macToByteArray(String mac){
+        checkNotNull(mac,"MAC cannot be null");
+
+        mac = mac.replace(":","");
+
+        try {
+            return Hex.decodeHex(mac.toCharArray());
+        } catch (DecoderException e) {
+            throw new IllegalArgumentException("Unable to convert mac",e);
+        }
+    }
+
+    /**
+     * Detects whether {@code IpAddress} is ipv6
+     */
+    public static boolean isIpv6(IpAddress address) {
+        checkNotNull(address, "Address cannot be null");
+
+                checkState(!(address.getIpv4Address() == null && address.getIpv6Address() == null), "Invalid address");
+        return address.getIpv6Address() != null;
+    }
+
+    /**
+     * Detects whether {@code IpPrefix} is ipv6
+     */
+    public static boolean isIpv6(IpPrefix address) {
+        checkNotNull(address, "Address cannot be null");
+        checkState(!(address.getIpv4Prefix() == null && address.getIpv6Prefix() == null), "Invalid address");
+        return address.getIpv6Prefix() != null;
+    }
+
+
     /**
      * Transform Ipv4 address to a byte array acceptable by VPP. VPP expects incoming byte array to be in the same order
      * as the address.
@@ -144,6 +387,31 @@ public final class TranslateUtils {
     }
 
     /**
+     * Parse byte array returned by VPP representing an Ipv4 address. Vpp returns IP byte arrays in reversed order.
+     *
+     * @return Ipv4AddressNoZone containing string representation of IPv4 address constructed from submitted bytes. No
+     * change in order.
+     */
+    @Nonnull
+    public static Ipv4AddressNoZone arrayToIpv4AddressNoZoneReversed(@Nonnull byte[] ip) {
+        // VPP sends ipv4 in a 16 byte array
+
+        if (ip.length == 16) {
+            ip = Arrays.copyOfRange(ip, 0, 4);
+        }
+
+        ip = reverseBytes(ip);
+
+        try {
+            // Not reversing the byte array here!! because the IP coming from VPP is in reversed byte order
+            // compared to byte order it was submitted
+            return new Ipv4AddressNoZone(InetAddresses.toAddrString(InetAddresses.fromLittleEndianByteArray(ip)));
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException("Unable to parse ipv4", e);
+        }
+    }
+
+    /**
      * Return (interned) string from byte array while removing \u0000. Strings represented as fixed length byte[] from
      * vpp contain \u0000.
      */
diff --git a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/EntityDumpExecutor.java b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/EntityDumpExecutor.java
index 8f3ae5596..5bc2a4b77 100644
--- a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/EntityDumpExecutor.java
+++ b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/EntityDumpExecutor.java
@@ -26,6 +26,8 @@ import javax.annotation.concurrent.ThreadSafe;
 @ThreadSafe
 public interface EntityDumpExecutor<T, U> {
 
+    static Void NO_PARAMS = null;
+
     /**
      * Performs dump on {@link T} entity
      *