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authorMaros Marsalek <mmarsale@cisco.com>2016-10-10 15:30:12 +0200
committerMarek Gradzki <mgradzki@cisco.com>2016-10-14 05:44:00 +0000
commitf23067c0e21b69b0890ad36f1e9b497714903465 (patch)
treed590bdca61e5596c68a0ef6cdf06540c8c483b53 /vpp-common/vpp-translate-utils/src/main/java
parent0c5820220a4e7ebc3245259085d00551d2687e32 (diff)
HONEYCOMB-249 Add Ipv4Range calulator utility
Change-Id: If55fdafd6ed0a9c6acb9de74bf64154d3f26b2d5 Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Diffstat (limited to 'vpp-common/vpp-translate-utils/src/main/java')
-rw-r--r--vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4AddressRange.java114
-rw-r--r--vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4Translator.java3
2 files changed, 117 insertions, 0 deletions
diff --git a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4AddressRange.java b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4AddressRange.java
new file mode 100644
index 000000000..8408e79f4
--- /dev/null
+++ b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4AddressRange.java
@@ -0,0 +1,114 @@
+/*
+ * 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.vpp.util;
+
+import java.util.Objects;
+import javax.annotation.Nonnull;
+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;
+
+/**
+ * IPv4 address range representation.
+ */
+public final class Ipv4AddressRange {
+
+ private final Ipv4AddressNoZone start;
+ private final Ipv4AddressNoZone end;
+
+ private Ipv4AddressRange(@Nonnull final Ipv4AddressNoZone start, @Nonnull final Ipv4AddressNoZone end) {
+ this.start = start;
+ this.end = end;
+ }
+
+ public Ipv4AddressNoZone getStart() {
+ return start;
+ }
+
+ public Ipv4AddressNoZone getEnd() {
+ return end;
+ }
+
+ @Override
+ public boolean equals(final Object other) {
+ if (this == other) {
+ return true;
+ }
+ if (other == null || getClass() != other.getClass()) {
+ return false;
+ }
+ final Ipv4AddressRange that = (Ipv4AddressRange) other;
+ return Objects.equals(start, that.start)
+ && Objects.equals(end, that.end);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(start, end);
+ }
+
+ @Override
+ public String toString() {
+ return "Ipv4AddressRange{"
+ + "start=" + start
+ + ", end=" + end
+ + '}';
+ }
+
+ /**
+ * Create address range from prefix.
+ */
+ public static Ipv4AddressRange fromPrefix(final Ipv4Prefix externalIpPool) {
+ final String addressString = externalIpPool.getValue().split("/")[0];
+ byte prefixLength = Ipv4Translator.INSTANCE.extractPrefix(externalIpPool);
+
+ if (prefixLength == 32) {
+ // 32 Prefix can be handled instantly
+ return new Ipv4AddressRange(new Ipv4AddressNoZone(addressString), new Ipv4AddressNoZone(addressString));
+ }
+
+ final byte[] prefixAddrBytes = Ipv4Translator.INSTANCE.ipv4AddressNoZoneToArray(addressString);
+ final byte[] prefixAddrBytes0 = new byte[prefixAddrBytes.length];
+ final byte[] prefixAddrBytesF = new byte[prefixAddrBytes.length];
+
+ byte index = 0;
+ while (prefixLength >= 8) {
+ prefixAddrBytes0[index] = prefixAddrBytes[index];
+ prefixAddrBytesF[index] = prefixAddrBytes[index];
+ index++;
+ prefixLength -= 8;
+ }
+
+ // Take care of the rest
+ if (prefixLength != 0) {
+ final int mask0 = (byte) (Math.pow(2, prefixLength) - 1) << (8 - prefixLength);
+ prefixAddrBytes0[index] = (byte) (prefixAddrBytes[index] & mask0);
+
+ final int maskF = (byte) (Math.pow(2, 8 - prefixLength) - 1);
+ prefixAddrBytesF[index] = (byte) (prefixAddrBytes[index] | maskF);
+
+ index++;
+ }
+
+ for (int i = index; i < 4; i++) {
+ prefixAddrBytes0[i] = 0;
+ prefixAddrBytesF[i] = (byte) 255;
+ }
+
+ return new Ipv4AddressRange(Ipv4Translator.INSTANCE.arrayToIpv4AddressNoZoneReversed(prefixAddrBytes0),
+ Ipv4Translator.INSTANCE.arrayToIpv4AddressNoZoneReversed(prefixAddrBytesF));
+ }
+}
diff --git a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4Translator.java b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4Translator.java
index ff737d4ab..b5f93dfba 100644
--- a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4Translator.java
+++ b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/Ipv4Translator.java
@@ -30,6 +30,9 @@ import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.
*/
public interface Ipv4Translator extends ByteDataTranslator {
+ /**
+ * Make available also from static context.
+ */
Ipv4Translator INSTANCE = new Ipv4Translator() {};
/**