Move pcep base parser Activator to its own bundle

[bgpcep.git] / pcep / base-parser / src / main / java / org / opendaylight / protocol / pcep / parser / object / PCEPMetricObjectParser.java

diff --git a/pcep/base-parser/src/main/java/org/opendaylight/protocol/pcep/parser/object/PCEPMetricObjectParser.java b/pcep/base-parser/src/main/java/org/opendaylight/protocol/pcep/parser/object/PCEPMetricObjectParser.java
new file mode 100644 (file)
index 0000000..58db1b4
--- /dev/null
+++ b/pcep/base-parser/src/main/java/org/opendaylight/protocol/pcep/parser/object/PCEPMetricObjectParser.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2013 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.parser.object;
+
+import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeFloat32;
+import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedByte;
+
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+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.BitArray;
+import org.opendaylight.protocol.util.ByteArray;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ieee754.rev130819.Float32;
+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.metric.object.Metric;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.MetricBuilder;
+
+/**
+ * Parser for {@link Metric}
+ */
+public class PCEPMetricObjectParser implements ObjectParser, ObjectSerializer {
+
+    public static final int CLASS = 6;
+
+    public static final int TYPE = 1;
+
+    /*
+     * lengths of fields in bytes
+     */
+    private static final int FLAGS_SIZE = 8;
+    private static final int METRIC_VALUE_F_LENGTH = 4;
+
+    /*
+     * offsets of fields in bytes
+     */
+    private static final int RESERVED = 2;
+
+    /*
+     * flags offsets inside flags field in bits
+     */
+    private static final int C_FLAG_OFFSET = 6;
+    private static final int B_FLAG_OFFSET = 7;
+
+    private static final int SIZE = METRIC_VALUE_F_LENGTH + METRIC_VALUE_F_LENGTH;
+
+    @Override
+    public Metric parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
+        Preconditions.checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
+        if (bytes.readableBytes() != SIZE) {
+            throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + bytes.readableBytes() + "; Expected: " + SIZE
+                    + ".");
+        }
+        bytes.skipBytes(RESERVED);
+        final BitArray flags = BitArray.valueOf(bytes.readByte());
+        final MetricBuilder builder = new MetricBuilder();
+        builder.setIgnore(header.isIgnore());
+        builder.setProcessingRule(header.isProcessingRule());
+        builder.setBound(flags.get(B_FLAG_OFFSET));
+        builder.setComputed(flags.get(C_FLAG_OFFSET));
+        builder.setMetricType(bytes.readUnsignedByte());
+        builder.setValue(new Float32(ByteArray.readBytes(bytes, METRIC_VALUE_F_LENGTH)));
+        return builder.build();
+    }
+
+    @Override
+    public void serializeObject(final Object object, final ByteBuf buffer) {
+        Preconditions.checkArgument(object instanceof Metric, "Wrong instance of PCEPObject. Passed %s. Needed MetricObject.", object.getClass());
+        final Metric mObj = (Metric) object;
+        final ByteBuf body = Unpooled.buffer(SIZE);
+        body.writeZero(RESERVED);
+        final BitArray flags = new BitArray(FLAGS_SIZE);
+        flags.set(C_FLAG_OFFSET, mObj.isComputed());
+        flags.set(B_FLAG_OFFSET, mObj.isBound());
+        flags.toByteBuf(body);
+        Preconditions.checkArgument(mObj.getMetricType() != null, "MetricType is mandatory.");
+        writeUnsignedByte(mObj.getMetricType(), body);
+        writeFloat32(mObj.getValue(), body);
+        ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
+    }
+}