Bug-2226: RFC5886 - New objects parsers/seriazers

[bgpcep.git] / pcep / impl / src / main / java / org / opendaylight / protocol / pcep / impl / object / PCEPProcTimeObjectParser.java

diff --git a/pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPProcTimeObjectParser.java b/pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPProcTimeObjectParser.java
new file mode 100644 (file)
index 0000000..20af201
--- /dev/null
+++ b/pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPProcTimeObjectParser.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.protocol.pcep.impl.object;
+
+import static org.opendaylight.protocol.util.ByteBufWriteUtil.INT_BYTES_LENGTH;
+
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import java.util.BitSet;
+import org.opendaylight.protocol.pcep.spi.ObjectParser;
+import org.opendaylight.protocol.pcep.spi.ObjectSerializer;
+import org.opendaylight.protocol.pcep.spi.ObjectUtil;
+import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
+import org.opendaylight.protocol.util.ByteArray;
+import org.opendaylight.protocol.util.ByteBufWriteUtil;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.proc.time.object.ProcTime;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.proc.time.object.ProcTimeBuilder;
+
+/**
+ * Parser for {@link ProcTime}
+ * @see https://tools.ietf.org/html/rfc5886#section-4.4
+ */
+public class PCEPProcTimeObjectParser implements ObjectParser, ObjectSerializer {
+
+    public static final int CLASS = 26;
+
+    public static final int TYPE = 1;
+
+    private static final int RESERVED = 2;
+    private static final int FLAGS = RESERVED;
+    private static final int BODY_SIZE = RESERVED + FLAGS + 5 * INT_BYTES_LENGTH;
+    private static final int E_FLAG_POSITION = 15;
+
+    @Override
+    public void serializeObject(final Object object, final ByteBuf buffer) {
+        Preconditions.checkArgument(object instanceof ProcTime, "Wrong instance of PCEPObject. Passed %s. Needed ProcTimeObject.", object.getClass());
+        final ProcTime procTime = (ProcTime) object;
+        final ByteBuf body = Unpooled.buffer(BODY_SIZE);
+        body.writeZero(RESERVED);
+        final BitSet flagBits = new BitSet(FLAGS * Byte.SIZE);
+        flagBits.set(E_FLAG_POSITION, procTime.isEstimated());
+        ByteBufWriteUtil.writeBitSet(flagBits, FLAGS, body);
+        ByteBufWriteUtil.writeUnsignedInt(procTime.getCurrentProcTime(), body);
+        ByteBufWriteUtil.writeUnsignedInt(procTime.getMinProcTime(), body);
+        ByteBufWriteUtil.writeUnsignedInt(procTime.getMaxProcTime(), body);
+        ByteBufWriteUtil.writeUnsignedInt(procTime.getAverageProcTime(), body);
+        ByteBufWriteUtil.writeUnsignedInt(procTime.getVarianceProcTime(), body);
+        ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
+    }
+
+    @Override
+    public Object parseObject(final ObjectHeader header, final ByteBuf buffer) throws PCEPDeserializerException {
+        Preconditions.checkArgument(buffer != null && buffer.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
+        final ProcTimeBuilder builder = new ProcTimeBuilder();
+        buffer.readBytes(RESERVED);
+        final BitSet flagBits = ByteArray.bytesToBitSet(buffer.readBytes(FLAGS).array());
+        builder.setEstimated(flagBits.get(E_FLAG_POSITION));
+        builder.setCurrentProcTime(buffer.readUnsignedInt());
+        builder.setMinProcTime(buffer.readUnsignedInt());
+        builder.setMaxProcTime(buffer.readUnsignedInt());
+        builder.setAverageProcTime(buffer.readUnsignedInt());
+        builder.setVarianceProcTime(buffer.readUnsignedInt());
+        return builder.build();
+    }
+
+}