Data: Prop 123 Meta Lease

core/java/src/net/i2p/data/MetaLease.java

@@ -0,0 +1,82 @@
+package net.i2p.data;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Date;
+
+/**
+ * Like a Lease, but points to another LeaseSet.
+ *
+ * TunnelId unused. Flags unsupported.
+ * The LeaseSet Hash is available at getGateway() / setGateway().
+ * Length is 40.
+ *
+ * PRELIMINARY - Subject to change - see proposal 123
+ *
+ * @since 0.9.38
+ */
+public class MetaLease extends Lease {
+
+    private int _cost;
+
+    public int getCost() {
+        return _cost;
+    }
+
+    public void setCost(int cost) {
+        _cost = cost;
+    }
+
+    /**
+     * @throws UnsupportedOperationException always
+     */
+    @Override
+    public TunnelId getTunnelId() {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * @throws UnsupportedOperationException always
+     */
+    @Override
+    public void setTunnelId(TunnelId id) {
+        throw new UnsupportedOperationException();
+    }
+    
+    @Override
+    public void readBytes(InputStream in) throws DataFormatException, IOException {
+        _gateway = Hash.create(in);
+        // flags
+        DataHelper.skip(in, 3);
+        _cost = in.read();
+        _end = new Date(DataHelper.readLong(in, 4) * 1000);
+    }
+    
+    @Override
+    public void writeBytes(OutputStream out) throws DataFormatException, IOException {
+        if (_gateway == null)
+            throw new DataFormatException("Not enough data to write out a Lease");
+        _gateway.writeBytes(out);
+        // flags
+        DataHelper.writeLong(out, 3, 0);
+        out.write(_cost);
+        DataHelper.writeLong(out, 4, _end.getTime() / 1000);
+    }
+    
+    @Override
+    public boolean equals(Object object) {
+        if (object == this) return true;
+        if ((object == null) || !(object instanceof MetaLease)) return false;
+        MetaLease lse = (MetaLease) object;
+        return DataHelper.eq(_end, lse.getEndDate())
+               && _cost == lse._cost
+               && DataHelper.eq(_gateway, lse.getGateway());
+    }
+    
+    @Override
+    public int hashCode() {
+        return (int) _end.getTime() ^ DataHelper.hashCode(_gateway)
+               ^ _cost;
+    }
+}