[AETHER-76] Impelentation of a new Trellis Troubleshoot Tool (T3) for offline mode
- For the performance improvement, T3 offline mode uses snapshots of the network states
called Network Information Base (NIB) instead of runtime interactions with ONOS core
during troubleshooting a Trellis system.
- Partially tested with some mininet topos for trellis
(https://github.com/opennetworkinglab/routing/tree/master/trellis).
- Usage instruction docs (https://docs.trellisfabric.org/troubleshooting.html).
Change-Id: Ice608f77aa96bfbcadfff34991c4a1b6d93125b6
(cherry picked from commit eaa6329aba67c2577fdca7d3ddf230611e82f9f7)
diff --git a/app/src/main/java/org/onosproject/t3/api/DriverNib.java b/app/src/main/java/org/onosproject/t3/api/DriverNib.java
new file mode 100644
index 0000000..4c88a20
--- /dev/null
+++ b/app/src/main/java/org/onosproject/t3/api/DriverNib.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2020-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.onosproject.t3.api;
+
+import com.google.common.collect.ImmutableMap;
+import org.onosproject.net.DeviceId;
+
+import java.util.Map;
+
+/**
+ * Represents Network Information Base (NIB) for drivers
+ * and supports alternative functions to
+ * {@link org.onosproject.net.driver.DriverService} for offline data.
+ */
+public class DriverNib {
+
+ private Map<DeviceId, String> deviceDriverMap;
+
+ // use the singleton helper to create the instance
+ protected DriverNib() {
+ }
+
+ /**
+ * Sets a map of device id : driver name.
+ *
+ * @param deviceDriverMap device-driver map
+ */
+ public void setDeviceDriverMap(Map<DeviceId, String> deviceDriverMap) {
+ this.deviceDriverMap = deviceDriverMap;
+ }
+
+ /**
+ * Returns the device-driver map.
+ *
+ * @return device-driver map
+ */
+ public Map<DeviceId, String> getDeviceDriverMap() {
+ return ImmutableMap.copyOf(deviceDriverMap);
+ }
+
+ /**
+ * Returns a driver name of the given device.
+ *
+ * @param deviceId the device id
+ * @return the driver name
+ */
+ public String getDriverName(DeviceId deviceId) {
+ return deviceDriverMap.get(deviceId);
+ }
+
+ /**
+ * Returns the singleton instance of drivers NIB.
+ *
+ * @return instance of drivers NIB
+ */
+ public static DriverNib getInstance() {
+ return DriverNib.SingletonHelper.INSTANCE;
+ }
+
+ private static class SingletonHelper {
+ private static final DriverNib INSTANCE = new DriverNib();
+ }
+
+}