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author | 2016-09-27 14:24:06 +0200 | |
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committer | 2016-09-27 14:24:06 +0200 | |
commit | a4b65a2de72906e53c94de3beb098744d6fc14ae (patch) | |
tree | 1d491daab017b3b96eda81f40c4872786dc2b44b /vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/MacTranslator.java | |
parent | c9820abdccb612d000a7a8bf6ddb763b3aec0a1d (diff) |
HONEYCOMB-206: change package name to match groupId
Change-Id: I74f769c09e86f08b1753e685a134d20e801bd7da
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
Diffstat (limited to 'vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/MacTranslator.java')
-rw-r--r-- | vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/MacTranslator.java | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/MacTranslator.java b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/MacTranslator.java new file mode 100644 index 000000000..af26b11b2 --- /dev/null +++ b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/vpp/util/MacTranslator.java @@ -0,0 +1,109 @@ +/* + * 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 static com.google.common.base.Preconditions.checkArgument; +import static com.google.common.base.Preconditions.checkNotNull; + +import com.google.common.base.Splitter; +import java.util.List; +import java.util.function.BiConsumer; +import javax.annotation.Nonnull; +import org.apache.commons.codec.DecoderException; +import org.apache.commons.codec.binary.Hex; + +/** + * Trait providing logic for translation of ipv4-related data + */ +public interface MacTranslator { + + Splitter COLON_SPLITTER = Splitter.on(':'); + + /** + * Parse string represented mac address (using ":" as separator) into a byte array + */ + @Nonnull + default byte[] parseMac(@Nonnull final String macAddress) { + final List<String> parts = COLON_SPLITTER.splitToList(macAddress); + checkArgument(parts.size() == 6, "Mac address is expected to have 6 parts but was: %s", macAddress); + return parseMacLikeString(parts); + } + + default byte[] parseMacLikeString(final List<String> strings) { + return strings.stream().limit(6).map(this::parseHexByte).collect( + () -> new byte[strings.size()], + new BiConsumer<byte[], Byte>() { + + private int i = -1; + + @Override + public void accept(final byte[] bytes, final Byte aByte) { + bytes[++i] = aByte; + } + }, + (bytes, bytes2) -> { + throw new UnsupportedOperationException("Parallel collect not supported"); + }); + } + + /** + * Converts byte array to address string ,not separated with ":" + */ + default String byteArrayToMacUnseparated(byte[] address) { + checkArgument(address.length == 6, "Illegal array length"); + return Hex.encodeHexString(address); + } + + /** + * Converts byte array to address string ,separated with ":" + */ + default 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 + */ + default 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); + } + } + + default byte parseHexByte(final String aByte) { + return (byte) Integer.parseInt(aByte, 16); + } +} |