Renamed datagrid and datastore packages

net.onrc.onos.datagrid.* => net.onrc.onos.core.datagrid.*
net.onrc.onos.datastore.* => net.onrc.onos.core.datastore.*

Change-Id: Ibe1894a6fabae08ea7cfcbf6595f0c91b05ef497
diff --git a/src/main/java/net/onrc/onos/core/datastore/topology/KVPort.java b/src/main/java/net/onrc/onos/core/datastore/topology/KVPort.java
new file mode 100644
index 0000000..9ab2d2a
--- /dev/null
+++ b/src/main/java/net/onrc/onos/core/datastore/topology/KVPort.java
@@ -0,0 +1,205 @@
+package net.onrc.onos.core.datastore.topology;
+
+import java.nio.ByteBuffer;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import net.onrc.onos.core.datastore.DataStoreClient;
+import net.onrc.onos.core.datastore.IKVTable.IKVEntry;
+import net.onrc.onos.core.datastore.RCProtos.PortProperty;
+import net.onrc.onos.core.datastore.utils.ByteArrayUtil;
+import net.onrc.onos.core.datastore.utils.KVObject;
+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;
+
+/**
+ * Port object in data store.
+ *
+ * Note: This class will not maintain invariants.
+ *       e.g., It will NOT automatically remove Links or Devices on Port,
+ *       when deleting a Port.
+ */
+public class KVPort extends KVObject {
+    private static final Logger log = LoggerFactory.getLogger(KVPort.class);
+
+    private static final ThreadLocal<Kryo> portKryo = 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 final String GLOBAL_PORT_TABLE_NAME = "G:Port";
+
+    // must not re-order enum members, ordinal will be sent over wire
+    public enum STATUS {
+        INACTIVE, ACTIVE;
+    }
+
+    private final Long dpid;
+    private final Long number;
+
+    private STATUS status;
+
+    public static byte[] getPortID(final Long dpid, final Long number) {
+        return PortEvent.getPortID(dpid, number).array();
+    }
+
+    public static long[] getPortPairFromKey(final byte[] key) {
+        return getPortPairFromKey(ByteBuffer.wrap(key));
+    }
+
+    public static long[] getPortPairFromKey(final ByteBuffer keyBuf) {
+        if (keyBuf.getChar() != 'S') {
+            throw new IllegalArgumentException("Invalid Port key:" + keyBuf
+                    + " "
+                    + ByteArrayUtil.toHexStringBuffer(keyBuf.array(), ":"));
+        }
+        long[] pair = new long[2];
+        pair[0] = keyBuf.getLong();
+        if (keyBuf.getChar() != 'P') {
+            throw new IllegalArgumentException("Invalid Port key:" + keyBuf
+                    + " "
+                    + ByteArrayUtil.toHexStringBuffer(keyBuf.array(), ":"));
+        }
+        pair[1] = keyBuf.getLong();
+        return pair;
+
+    }
+
+    public static long getDpidFromKey(final byte[] key) {
+        return getPortPairFromKey(key)[0];
+    }
+
+    public static long getNumberFromKey(final byte[] key) {
+        return getPortPairFromKey(key)[1];
+    }
+
+    // FIXME specify DPID,number here, or Should caller specify the key it self?
+    // In other words, should layer above have the control of the ID?
+    public KVPort(final Long dpid, final Long number) {
+        super(DataStoreClient.getClient().getTable(GLOBAL_PORT_TABLE_NAME), getPortID(dpid, number));
+
+        // TODO Auto-generated constructor stub
+
+        this.dpid = dpid;
+        this.number = number;
+        this.status = STATUS.INACTIVE;
+    }
+
+    /**
+     * Get an instance from Key.
+     *
+     * @note You need to call `read()` to get the DB content.
+     * @param key
+     * @return KVPort instance
+     */
+    public static KVPort createFromKey(final byte[] key) {
+        long[] pair = getPortPairFromKey(key);
+        return new KVPort(pair[0], pair[1]);
+    }
+
+    public static Iterable<KVPort> getAllPorts() {
+        return new PortEnumerator();
+    }
+
+    public static class PortEnumerator implements Iterable<KVPort> {
+
+        @Override
+        public Iterator<KVPort> iterator() {
+            return new PortIterator();
+        }
+    }
+
+    public static class PortIterator extends AbstractObjectIterator<KVPort> {
+
+        public PortIterator() {
+            super(DataStoreClient.getClient().getTable(GLOBAL_PORT_TABLE_NAME));
+        }
+
+        @Override
+        public KVPort next() {
+            IKVEntry o = enumerator.next();
+            KVPort e = KVPort.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 Long getDpid() {
+        return dpid;
+    }
+
+    public Long getNumber() {
+        return number;
+    }
+
+    public byte[] getId() {
+        return getKey();
+    }
+
+    @Override
+    public byte[] serialize() {
+        Map<Object, Object> map = getPropertyMap();
+
+        PortProperty.Builder port = PortProperty.newBuilder();
+        port.setDpid(dpid);
+        port.setNumber(number);
+        port.setStatus(status.ordinal());
+
+        if (!map.isEmpty()) {
+            byte[] propMaps = serializePropertyMap(portKryo.get(), map);
+            port.setValue(ByteString.copyFrom(propMaps));
+        }
+
+        return port.build().toByteArray();
+    }
+
+    @Override
+    protected boolean deserialize(final byte[] bytes) {
+        try {
+            boolean success = true;
+
+            PortProperty port = PortProperty.parseFrom(bytes);
+            byte[] props = port.getValue().toByteArray();
+            success &= deserializePropertyMap(portKryo.get(), props);
+            this.status = STATUS.values()[port.getStatus()];
+
+            return success;
+        } catch (InvalidProtocolBufferException e) {
+            log.error("Deserializing Port: " + this + " failed.", e);
+            return false;
+        }
+    }
+
+    @Override
+    public String toString() {
+        // TODO output all properties?
+        return "[" + this.getClass().getSimpleName()
+                + " 0x" + Long.toHexString(dpid) + "@" + number
+                + " STATUS:" + status + "]";
+    }
+}