CORD-535 Added purge and sync states CLIs

And improved result format of the existing CLIs

Change-Id: I49476ab52f77f6fadddf00dfc113c51153b300ed
diff --git a/src/main/java/org/opencord/cordvtn/cli/CordVtnPortListCommand.java b/src/main/java/org/opencord/cordvtn/cli/CordVtnPortListCommand.java
new file mode 100644
index 0000000..361b220
--- /dev/null
+++ b/src/main/java/org/opencord/cordvtn/cli/CordVtnPortListCommand.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2016-present 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.opencord.cordvtn.cli;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.google.common.base.Strings;
+import com.google.common.collect.Lists;
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.opencord.cordvtn.api.core.CordVtnService;
+import org.opencord.cordvtn.api.net.NetworkId;
+import org.opencord.cordvtn.api.net.VtnNetwork;
+import org.opencord.cordvtn.api.net.VtnPort;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import static com.fasterxml.jackson.databind.SerializationFeature.INDENT_OUTPUT;
+
+/**
+ * Lists VTN networks.
+ */
+@Command(scope = "onos", name = "cordvtn-ports",
+        description = "Lists all VTN ports")
+public class CordVtnPortListCommand extends AbstractShellCommand {
+
+    private static final String FORMAT = "%-40s%-20s%-18s%-6s%s";
+
+    @Argument(name = "networkId", description = "Network ID")
+    private String networkId = null;
+
+    @Override
+    protected void execute() {
+        CordVtnService service = AbstractShellCommand.get(CordVtnService.class);
+
+        List<VtnPort> ports;
+        if (Strings.isNullOrEmpty(networkId)) {
+            ports = Lists.newArrayList(service.vtnPorts());
+        } else {
+            VtnNetwork vtnNet = service.vtnNetwork(NetworkId.of(networkId));
+            if (vtnNet == null) {
+                print("Network %s does not exists", networkId);
+                return;
+            }
+            ports = service.vtnPorts().stream()
+                    .filter(p -> p.netId().equals(NetworkId.of(networkId)))
+                    .collect(Collectors.toList());
+            Collections.sort(ports, VtnPort.VTN_PORT_COMPARATOR);
+        }
+
+        if (outputJson()) {
+            try {
+                print("%s", mapper().writeValueAsString(json(ports)));
+            } catch (JsonProcessingException e) {
+                print("Failed to list networks in JSON format");
+            }
+        } else {
+            print(FORMAT, "ID", "MAC", "IP", "VLAN", "Additional IPs");
+            for (VtnPort port: ports) {
+                List<String> floatingIps = port.addressPairs().stream()
+                        .map(ip -> ip.ip().toString())
+                        .collect(Collectors.toList());
+                print(FORMAT, port.id(),
+                      port.mac(),
+                      port.ip(),
+                      port.vlanId().isPresent() ? port.vlanId().get() : "",
+                      floatingIps.isEmpty() ? "" : floatingIps);
+            }
+        }
+    }
+
+    private JsonNode json(List<VtnPort> ports) {
+        ArrayNode result = mapper().enable(INDENT_OUTPUT).createArrayNode();
+        for (VtnPort port: ports) {
+            ArrayNode addrPairs = mapper().createArrayNode();
+            port.addressPairs().forEach(pair -> addrPairs.add(
+                    mapper().createObjectNode()
+                            .put("ip", pair.ip().toString())
+                            .put("mac", pair.mac().toString())));
+
+            result.add(mapper().createObjectNode()
+                               .put("id", port.id().id())
+                               .put("networkId", port.netId().id())
+                               .put("mac", port.mac().toString())
+                               .put("ip", port.ip().toString())
+                               .put("vlan", port.vlanId().isPresent() ?
+                                       port.vlanId().get().toString() : null)
+                               .set("addressPairs", addrPairs));
+        }
+        return result;
+    }
+}