1 files changed, 84 insertions, 0 deletions
diff --git a/framework/src/onos/cli/src/main/java/org/onosproject/cli/net/MapsListCommand.java b/framework/src/onos/cli/src/main/java/org/onosproject/cli/net/MapsListCommand.java
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index 00000000..27cc5254
--- /dev/null
+++ b/framework/src/onos/cli/src/main/java/org/onosproject/cli/net/MapsListCommand.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2015 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.cli.net;
+
+import java.util.List;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.store.service.MapInfo;
+import org.onosproject.store.service.StorageAdminService;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * Command to list the various maps in the system.
+ */
+@Command(scope = "onos", name = "maps",
+        description = "Lists information about consistent maps in the system")
+public class MapsListCommand extends AbstractShellCommand {
+
+    // TODO: Add support to display different eventually
+    // consistent maps as well.
+
+    private static final String FMT = "name=%s size=%d";
+
+    /**
+     * Displays map info as text.
+     *
+     * @param mapInfo map descriptions
+     */
+    private void displayMaps(List<MapInfo> mapInfo) {
+        for (MapInfo info : mapInfo) {
+            print(FMT, info.name(), info.size());
+        }
+    }
+
+    /**
+     * Converts list of map info into a JSON object.
+     *
+     * @param mapInfo map descriptions
+     */
+    private JsonNode json(List<MapInfo> mapInfo) {
+        ObjectMapper mapper = new ObjectMapper();
+        ArrayNode maps = mapper.createArrayNode();
+
+        // Create a JSON node for each map
+        mapInfo.stream()
+            .forEach(info -> {
+                ObjectNode map = mapper.createObjectNode();
+                map.put("name", info.name())
+                   .put("size", info.size());
+                maps.add(map);
+            });
+
+        return maps;
+    }
+
+    @Override
+    protected void execute() {
+        StorageAdminService storageAdminService = get(StorageAdminService.class);
+        List<MapInfo> mapInfo = storageAdminService.getMapInfo();
+        if (outputJson()) {
+            print("%s", json(mapInfo));
+        } else {
+            displayMaps(mapInfo);
+        }
+    }
+}