Adding a grid topology simulator to the null provider.
Change-Id: Ie655840febc11d3986f1c8ec5c8ef2374014794c
diff --git a/providers/null/src/main/java/org/onosproject/provider/nil/GridTopologySimulator.java b/providers/null/src/main/java/org/onosproject/provider/nil/GridTopologySimulator.java
new file mode 100644
index 0000000..2f9c644
--- /dev/null
+++ b/providers/null/src/main/java/org/onosproject/provider/nil/GridTopologySimulator.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.provider.nil;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+/**
+ * Rectangular grid topology with hosts at each device.
+ */
+public class GridTopologySimulator extends TopologySimulator {
+
+ private int cols;
+ private int rows;
+
+ @Override
+ protected void processTopoShape(String shape) {
+ super.processTopoShape(shape);
+ rows = topoShape.length > 1 ? Integer.parseInt(topoShape[1]) : 10;
+ cols = topoShape.length > 2 ? Integer.parseInt(topoShape[2]) : rows;
+ hostCount = topoShape.length > 3 ? Integer.parseInt(topoShape[3]) : 1;
+ infrastructurePorts = 4;
+ deviceCount = rows * cols;
+ }
+
+ @Override
+ public void setUpTopology() {
+ checkArgument(rows > 1, "There must be at least 2 rows");
+ checkArgument(cols > 1, "There must be at least 2 columns");
+ super.setUpTopology();
+ }
+
+ @Override
+ protected void createLinks() {
+ for (int r = 0; r < rows; r++) {
+ for (int c = 0; c < cols; c++) {
+ int i = r * cols + c;
+ if (c < cols - 1) {
+ createLink(i, i + 1, 3, 1);
+ }
+ if (r < rows - 1) {
+ createLink(i, (r + 1) * cols + c, 4, 2);
+ }
+ }
+ }
+ }
+
+ @Override
+ protected void createHosts() {
+ deviceIds.forEach(id -> createHosts(id, infrastructurePorts));
+ }
+
+}