Interface ethernet packet parser
Change-Id: I527850723f37419dcf631d66aa29555e15e4c0d3
diff --git a/apps/ipflow-monitor/sflow/api/src/main/java/org/onosproject/sflow/EthernetCounter.java b/apps/ipflow-monitor/sflow/api/src/main/java/org/onosproject/sflow/EthernetCounter.java
index 2801aa1..553963a 100644
--- a/apps/ipflow-monitor/sflow/api/src/main/java/org/onosproject/sflow/EthernetCounter.java
+++ b/apps/ipflow-monitor/sflow/api/src/main/java/org/onosproject/sflow/EthernetCounter.java
@@ -16,11 +16,18 @@
package org.onosproject.sflow;
import com.google.common.base.MoreObjects;
+import java.nio.ByteBuffer;
+import org.onlab.packet.BasePacket;
+import org.onlab.packet.Deserializer;
+
+import java.util.function.BiPredicate;
/**
* Represents ethernet counters for network interfaces.
*/
-public final class EthernetCounter {
+public final class EthernetCounter extends BasePacket {
+
+ public static final int ETHERNET_COUNTER_LENGTH = 52;
private InterfaceCounter generic;
private int dot3StatsAlignmentErrors;
@@ -201,6 +208,56 @@
}
/**
+ * Deserializer function for sFlow ethernet counter.
+ *
+ * @return deserializer function
+ */
+ public static Deserializer<EthernetCounter> deserializer() {
+ return (data, offset, length) -> {
+
+ BiPredicate<ByteBuffer, Integer> isValidBuffer = (b, l)
+ -> b.hasRemaining() && b.remaining() >= l;
+
+ ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
+ byte[] ifCounterBytes;
+ if (!isValidBuffer.test(bb, InterfaceCounter.INTERFACE_COUNTER_LENGTH)) {
+ throw new IllegalStateException("Invalid interface ethernet counter buffer size.");
+ }
+
+ ifCounterBytes = new byte[InterfaceCounter.INTERFACE_COUNTER_LENGTH];
+ bb.get(ifCounterBytes);
+
+ InterfaceCounter interfaceCounter = InterfaceCounter.deserializer().deserialize(ifCounterBytes,
+ 0, InterfaceCounter.INTERFACE_COUNTER_LENGTH);
+ if (!isValidBuffer.test(bb, ETHERNET_COUNTER_LENGTH)) {
+ throw new IllegalStateException("Invalid interface ethernet counter buffer size.");
+ }
+
+ Builder builder = new Builder();
+ return builder.generic(interfaceCounter)
+ .dot3StatsAlignmentErrors(bb.getInt())
+ .dot3StatsFcsErrors(bb.getInt())
+ .dot3StatsSingleCollisionFrames(bb.getInt())
+ .dot3StatsMultipleCollisionFrames(bb.getInt())
+ .dot3StatsSqeTestErrors(bb.getInt())
+ .dot3StatsDeferredTransmissions(bb.getInt())
+ .dot3StatsLateCollisions(bb.getInt())
+ .dot3StatsExcessiveCollisions(bb.getInt())
+ .dot3StatsInternalMacTransmitErrors(bb.getInt())
+ .dot3StatsCarrierSenseErrors(bb.getInt())
+ .dot3StatsFrameTooLongs(bb.getInt())
+ .dot3StatsInternalMacReceiveErrors(bb.getInt())
+ .dot3StatsSymbolErrors(bb.getInt())
+ .build();
+ };
+ }
+
+ @Override
+ public byte[] serialize() {
+ throw new UnsupportedOperationException("Not supported yet.");
+ }
+
+ /**
* Builder pattern to create an instance of InterfaceCounter.
*/
private static class Builder {