* Console: Add a tunnel share ratio estimate

router/java/src/net/i2p/router/DummyTunnelManagerFacade.java

@@ -35,6 +35,7 @@ class DummyTunnelManagerFacade implements TunnelManagerFacade {
     public int getFreeTunnelCount() { return 0; }
     public int getOutboundTunnelCount() { return 0; }
     public int getInboundClientTunnelCount() { return 0; }
+    public double getShareRatio() { return 0d; }
     public int getOutboundClientTunnelCount() { return 0; }
     public long getLastParticipatingExpiration() { return -1; }
     public void buildTunnels(Destination client, ClientTunnelSettings settings) {}

router/java/src/net/i2p/router/TunnelManagerFacade.java

@@ -51,6 +51,7 @@ public interface TunnelManagerFacade extends Service {
     public int getInboundClientTunnelCount();
     /** how many outbound client tunnels do we have available? */
     public int getOutboundClientTunnelCount();
+    public double getShareRatio();
     
     /** When does the last tunnel we are participating in expire? */
     public long getLastParticipatingExpiration();

router/java/src/net/i2p/router/tunnel/pool/TunnelPoolManager.java

@@ -193,6 +193,29 @@ public class TunnelPoolManager implements TunnelManagerFacade {
     public int getParticipatingCount() { return _context.tunnelDispatcher().getParticipatingCount(); }
     public long getLastParticipatingExpiration() { return _context.tunnelDispatcher().getLastParticipatingExpiration(); }
     
+    /**
+     *  @return (number of part. tunnels) / (estimated total number of hops in our expl.+client tunnels)
+     *  100 max.
+     *  We just use length setting, not variance, for speed
+     *  @since 0.7.10
+     */
+    public double getShareRatio() {
+        int part = getParticipatingCount();
+        if (part <= 0)
+            return 0d;
+        List<TunnelPool> pools = new ArrayList();
+        listPools(pools);
+        int count = 0;
+        for (int i = 0; i < pools.size(); i++) {
+            TunnelPool pool = pools.get(i);
+            count += pool.size() * pool.getSettings().getLength();
+        }
+        if (count <= 0)
+            return 100d;
+        return Math.min(part / (double) count, 100d);
+    }
+
+
     public boolean isValidTunnel(Hash client, TunnelInfo tunnel) {
         if (tunnel.getExpiration() < _context.clock().now())
             return false;