Refactoring datastore package
Preparation to make datastore replacable
- Extract datastore interfaces
- Add multi Read/Write/Remove
- Add a method to walk over RCTable
- Refactor serialize/deserialize RCObject
- Localize dependency to JRAMCloud
- Separate RAMCloud specific code into ramcloud package
- Remove dependency to RAMCloud exception classes
- Remove RC prefix from non RAMCloud specific code
- Cosmetics and update sample/test code
- reflect Naoki's comment
- more cosmetic fixes
- reordered OPERATION enums
- removed no longer used code
- follow pmd, etc. where easily possible
Change-Id: I6f9153d705600447acf48a64f713c654c9f26713
diff --git a/src/main/java/net/onrc/onos/datastore/topology/KVLink.java b/src/main/java/net/onrc/onos/datastore/topology/KVLink.java
new file mode 100644
index 0000000..c9273ae
--- /dev/null
+++ b/src/main/java/net/onrc/onos/datastore/topology/KVLink.java
@@ -0,0 +1,217 @@
+package net.onrc.onos.datastore.topology;
+
+import java.nio.ByteBuffer;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import net.onrc.onos.datastore.DataStoreClient;
+import net.onrc.onos.datastore.IKVTable.IKVEntry;
+import net.onrc.onos.datastore.RCProtos.LinkProperty;
+import net.onrc.onos.datastore.utils.KVObject;
+import net.onrc.onos.ofcontroller.networkgraph.LinkEvent;
+import net.onrc.onos.ofcontroller.networkgraph.PortEvent;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.google.protobuf.ByteString;
+import com.google.protobuf.InvalidProtocolBufferException;
+
+/**
+ * Link object in data store.
+ */
+public class KVLink extends KVObject {
+ private static final Logger log = LoggerFactory.getLogger(KVLink.class);
+
+ private static final ThreadLocal<Kryo> linkKryo = new ThreadLocal<Kryo>() {
+ @Override
+ protected Kryo initialValue() {
+ Kryo kryo = new Kryo();
+ kryo.setRegistrationRequired(true);
+ kryo.setReferences(false);
+ kryo.register(byte[].class);
+ kryo.register(byte[][].class);
+ kryo.register(HashMap.class);
+ // TODO check if we should explicitly specify EnumSerializer
+ kryo.register(STATUS.class);
+ return kryo;
+ }
+ };
+
+ public static class SwitchPort {
+ public final Long dpid;
+ public final Long number;
+
+ public SwitchPort(final Long dpid, final Long number) {
+ this.dpid = dpid;
+ this.number = number;
+ }
+
+ public byte[] getPortID() {
+ return KVPort.getPortID(dpid, number);
+ }
+
+ public byte[] getSwitchID() {
+ return KVSwitch.getSwitchID(dpid);
+ }
+
+ @Override
+ public String toString() {
+ return "(" + Long.toHexString(dpid) + "@" + number + ")";
+ }
+
+ }
+
+ public static final String GLOBAL_LINK_TABLE_NAME = "G:Link";
+
+ // must not re-order enum members, ordinal will be sent over wire
+ public enum STATUS {
+ INACTIVE, ACTIVE;
+ }
+
+ private final SwitchPort src;
+ private final SwitchPort dst;
+ private STATUS status;
+
+ public static byte[] getLinkID(final Long src_dpid, final Long src_port_no,
+ final Long dst_dpid, final Long dst_port_no) {
+ return LinkEvent.getLinkID(src_dpid, src_port_no, dst_dpid,
+ dst_port_no).array();
+ }
+
+ public static long[] getLinkTupleFromKey(final byte[] key) {
+ return getLinkTupleFromKey(ByteBuffer.wrap(key));
+ }
+
+ public static long[] getLinkTupleFromKey(final ByteBuffer keyBuf) {
+ long[] tuple = new long[4];
+ if (keyBuf.getChar() != 'L') {
+ throw new IllegalArgumentException("Invalid Link key");
+ }
+ long[] src_port_pair = KVPort.getPortPairFromKey(keyBuf.slice());
+ keyBuf.position(2 + PortEvent.PORTID_BYTES);
+ long[] dst_port_pair = KVPort.getPortPairFromKey(keyBuf.slice());
+
+ tuple[0] = src_port_pair[0];
+ tuple[1] = src_port_pair[1];
+ tuple[2] = dst_port_pair[0];
+ tuple[3] = dst_port_pair[1];
+
+ return tuple;
+ }
+
+ public KVLink(final Long src_dpid, final Long src_port_no,
+ final Long dst_dpid, final Long dst_port_no) {
+ super(DataStoreClient.getClient().getTable(GLOBAL_LINK_TABLE_NAME), getLinkID(src_dpid,
+ src_port_no, dst_dpid, dst_port_no));
+
+ src = new SwitchPort(src_dpid, src_port_no);
+ dst = new SwitchPort(dst_dpid, dst_port_no);
+ status = STATUS.INACTIVE;
+ }
+
+ /**
+ * Get an instance from Key.
+ *
+ * @note You need to call `read()` to get the DB content.
+ * @param key
+ * @return KVLink instance
+ */
+ public static KVLink createFromKey(final byte[] key) {
+ long[] linkTuple = getLinkTupleFromKey(key);
+ return new KVLink(linkTuple[0], linkTuple[1], linkTuple[2],
+ linkTuple[3]);
+ }
+
+ public static Iterable<KVLink> getAllLinks() {
+ return new LinkEnumerator();
+ }
+
+ public static class LinkEnumerator implements Iterable<KVLink> {
+
+ @Override
+ public Iterator<KVLink> iterator() {
+ return new LinkIterator();
+ }
+ }
+
+ public static class LinkIterator extends AbstractObjectIterator<KVLink> {
+
+ public LinkIterator() {
+ super(DataStoreClient.getClient().getTable(GLOBAL_LINK_TABLE_NAME));
+ }
+
+ @Override
+ public KVLink next() {
+ IKVEntry o = enumerator.next();
+ KVLink e = KVLink.createFromKey(o.getKey());
+ e.deserialize(o.getValue(), o.getVersion());
+ return e;
+ }
+ }
+
+ public STATUS getStatus() {
+ return status;
+ }
+
+ public void setStatus(final STATUS status) {
+ this.status = status;
+ }
+
+ public SwitchPort getSrc() {
+ return src;
+ }
+
+ public SwitchPort getDst() {
+ return dst;
+ }
+
+ public byte[] getId() {
+ return getKey();
+ }
+
+ @Override
+ public byte[] serialize() {
+ Map<Object, Object> map = getPropertyMap();
+
+ LinkProperty.Builder link = LinkProperty.newBuilder();
+ link.setSrcSwId(ByteString.copyFrom(src.getSwitchID()));
+ link.setSrcPortId(ByteString.copyFrom(src.getPortID()));
+ link.setDstSwId(ByteString.copyFrom(dst.getSwitchID()));
+ link.setDstPortId(ByteString.copyFrom(dst.getPortID()));
+ link.setStatus(status.ordinal());
+
+ if (!map.isEmpty()) {
+ byte[] propMaps = serializePropertyMap(linkKryo.get(), map);
+ link.setValue(ByteString.copyFrom(propMaps));
+ }
+
+ return link.build().toByteArray();
+ }
+
+ @Override
+ protected boolean deserialize(final byte[] bytes) {
+ try {
+ boolean success = true;
+
+ LinkProperty link = LinkProperty.parseFrom(bytes);
+ byte[] props = link.getValue().toByteArray();
+ success &= deserializePropertyMap(linkKryo.get(), props);
+ this.status = STATUS.values()[link.getStatus()];
+
+ return success;
+ } catch (InvalidProtocolBufferException e) {
+ log.error("Deserializing Link: " + this + " failed.", e);
+ return false;
+ }
+ }
+
+ @Override
+ public String toString() {
+ // TODO output all properties?
+ return "[" + this.getClass().getSimpleName()
+ + " " + src + "->" + dst + " STATUS:" + status + "]";
+ }
+}