diff options
Diffstat (limited to 'framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LocalPref.java')
| -rw-r--r-- | framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LocalPref.java | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LocalPref.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LocalPref.java new file mode 100644 index 00000000..36793c18 --- /dev/null +++ b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LocalPref.java @@ -0,0 +1,121 @@ +/* + * Copyright 2015 Open Networking Laboratory + * + * 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 org.onosproject.bgpio.types; + +import java.util.Objects; + +import org.jboss.netty.buffer.ChannelBuffer; +import org.onosproject.bgpio.exceptions.BgpParseException; +import org.onosproject.bgpio.util.Constants; +import org.onosproject.bgpio.util.Validation; + +import com.google.common.base.MoreObjects; + +/** + * Provides implementation of LocalPref BGP Path Attribute. + */ +public class LocalPref implements BgpValueType { + public static final byte LOCAL_PREF_TYPE = 5; + public static final byte LOCAL_PREF_MAX_LEN = 4; + + private int localPref; + + /** + * Constructor to initialize LocalPref. + * + * @param localPref local preference + */ + public LocalPref(int localPref) { + this.localPref = localPref; + } + + /** + * Returns local preference value. + * + * @return local preference value + */ + public int localPref() { + return this.localPref; + } + + /** + * Reads the channel buffer and returns object of LocalPref. + * + * @param cb channelBuffer + * @return object of LocalPref + * @throws BgpParseException while parsing localPref attribute + */ + public static LocalPref read(ChannelBuffer cb) throws BgpParseException { + int localPref; + ChannelBuffer tempCb = cb.copy(); + Validation parseFlags = Validation.parseAttributeHeader(cb); + if ((parseFlags.getLength() > LOCAL_PREF_MAX_LEN) || cb.readableBytes() < parseFlags.getLength()) { + Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR, + parseFlags.getLength()); + } + + int len = parseFlags.isShort() ? parseFlags.getLength() + + Constants.TYPE_AND_LEN_AS_SHORT : parseFlags.getLength() + Constants.TYPE_AND_LEN_AS_BYTE; + ChannelBuffer data = tempCb.readBytes(len); + if (parseFlags.getFirstBit()) { + throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_FLAGS_ERROR, data); + } + + localPref = cb.readInt(); + return new LocalPref(localPref); + } + + @Override + public short getType() { + return LOCAL_PREF_TYPE; + } + + @Override + public int hashCode() { + return Objects.hash(localPref); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj instanceof LocalPref) { + LocalPref other = (LocalPref) obj; + return Objects.equals(localPref, other.localPref); + } + return false; + } + + @Override + public String toString() { + return MoreObjects.toStringHelper(getClass()) + .add("localPref", localPref) + .toString(); + } + + @Override + public int write(ChannelBuffer cb) { + //Not to implement as of now + return 0; + } + + @Override + public int compareTo(Object o) { + // TODO Auto-generated method stub + return 0; + } +}
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