[VOL-4246] Feature parity with the previous implementation

Change-Id: I3741edb3c1b88b1cf8b5e6d4ff0900132e2e5e6a
diff --git a/impl/src/main/java/org/opencord/olt/cli/ShowPortStatus.java b/impl/src/main/java/org/opencord/olt/cli/ShowPortStatus.java
new file mode 100644
index 0000000..f3b35a0
--- /dev/null
+++ b/impl/src/main/java/org/opencord/olt/cli/ShowPortStatus.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2021-present Open Networking Foundation
+ *
+ * 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.olt.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.Completion;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.cli.net.DeviceIdCompleter;
+import org.onosproject.cli.net.PortNumberCompleter;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.opencord.olt.impl.OltFlowServiceInterface;
+import org.opencord.olt.impl.OltPortStatus;
+import org.opencord.olt.impl.ServiceKey;
+import org.opencord.sadis.UniTagInformation;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Shows ports' status of an OLT.
+ */
+@Service
+@Command(scope = "onos", name = "volt-port-status",
+        description = "Shows information about the OLT ports (default EAPOL, subscriber flows)")
+public class ShowPortStatus extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "deviceId", description = "Access device ID",
+            required = false, multiValued = false)
+    @Completion(DeviceIdCompleter.class)
+    private String strDeviceId = null;
+
+    @Argument(index = 1, name = "port", description = "Subscriber port number",
+            required = false, multiValued = false)
+    @Completion(PortNumberCompleter.class)
+    private String strPort = null;
+
+    @Override
+    protected void doExecute() {
+
+        OltFlowServiceInterface service = AbstractShellCommand.get(OltFlowServiceInterface.class);
+        Map<ServiceKey, OltPortStatus> connectPointStatus = service.getConnectPointStatus();
+        if (connectPointStatus.isEmpty()) {
+            print("No ports handled by the olt app");
+            return;
+        }
+
+        Map<DeviceId, Map<PortNumber, Map<UniTagInformation, OltPortStatus>>> sortedStatus = new HashMap<>();
+
+        DeviceId deviceId = strDeviceId != null ? DeviceId.deviceId(strDeviceId) : null;
+        PortNumber portNumber = strPort != null ? PortNumber.portNumber(strPort) : null;
+
+        connectPointStatus.forEach((sk, fs) -> {
+            if (deviceId != null && !deviceId.equals(sk.getPort().connectPoint()
+                    .deviceId())) {
+                return;
+            }
+            if (portNumber != null && !portNumber.equals(sk.getPort().connectPoint().port())) {
+                return;
+            }
+            sortedStatus.compute(sk.getPort().connectPoint().deviceId(), (id, portMap) -> {
+                if (portMap == null) {
+                    portMap = new HashMap<>();
+                }
+                portMap.compute(sk.getPort().connectPoint().port(), (id2, ps) -> {
+                    if (ps == null) {
+                        ps = new HashMap<>();
+                    }
+                    ps.put(sk.getService(), fs);
+                    return ps;
+                });
+
+                return portMap;
+            });
+        });
+
+        sortedStatus.forEach(this::display);
+    }
+
+    private void display(DeviceId deviceId, Map<PortNumber, Map<UniTagInformation, OltPortStatus>> ports) {
+        print("deviceId=%s, managedPorts=%d", deviceId, ports.size());
+
+        ports.forEach((port, subscribers) -> {
+            print("\tport=%s", port);
+            subscribers.forEach((uti, status) -> {
+                print("\t\tservice=%s defaultEapolStatus=%s subscriberFlowsStatus=%s dhcpStatus=%s",
+                        uti.getServiceName(), status.defaultEapolStatus,
+                        status.subscriberFlowsStatus, status.dhcpStatus);
+            });
+        });
+    }
+}
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