| /* |
| * Copyright 2017-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.drivers.arista; |
| |
| 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; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.behaviour.ControllerConfig; |
| import org.onosproject.net.behaviour.ControllerInfo; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| import org.onosproject.net.driver.DriverHandler; |
| import org.onosproject.protocol.rest.RestSBController; |
| import org.slf4j.Logger; |
| |
| import javax.ws.rs.core.MediaType; |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.charset.StandardCharsets; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Sets, gets and removes the openflow controller configuration from a Arista Rest device. |
| */ |
| public class ControllerConfigAristaImpl extends AbstractHandlerBehaviour implements ControllerConfig { |
| |
| private static final String CONFIGURE_TERMINAL = "configure"; |
| private static final String OPENFLOW_CMD = "openflow"; |
| private static final String REMOVE_CONTROLLER_CMD = "no controller tcp:%s:%d"; |
| private static final String API_ENDPOINT = "/command-api/"; |
| private static final String JSON = "json"; |
| private static final String JSONRPC = "jsonrpc"; |
| private static final String METHOD = "method"; |
| private static final String RUN_CMDS = "runCmds"; |
| private static final String VERSION = "version"; |
| private static final String ID = "id"; |
| private static final String PARAMS = "params"; |
| private static final String FORMAT = "format"; |
| private static final String TIMESTAMPS = "timestamps"; |
| private static final String CMDS = "cmds"; |
| private static final String TWO_POINT_ZERO = "2.0"; |
| private static final String REMOVE_CONTROLLERS = "removeControllers"; |
| private static final String ENABLE = "enable"; |
| private static final int MAX_CONTROLLERS = 8; |
| private static final Boolean FALSE = false; |
| private static final int VERSION_1 = 1; |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Override |
| public List<ControllerInfo> getControllers() { |
| throw new UnsupportedOperationException("get controllers configuration is not supported"); |
| } |
| |
| @Override |
| public void setControllers(List<ControllerInfo> controllers) { |
| throw new UnsupportedOperationException("set controllers configuration is not supported"); |
| } |
| |
| @Override |
| public void removeControllers(List<ControllerInfo> controllers) { |
| DriverHandler handler = handler(); |
| RestSBController controller = checkNotNull(handler.get(RestSBController.class)); |
| DeviceId deviceId = handler.data().deviceId(); |
| |
| List<String> cmds = new ArrayList<>(); |
| cmds.add(CONFIGURE_TERMINAL); |
| cmds.add(OPENFLOW_CMD); |
| controllers.stream().limit(MAX_CONTROLLERS).forEach(c -> cmds |
| .add(String.format(REMOVE_CONTROLLER_CMD, c.ip().toString(), c.port()))); |
| |
| String request = generate(cmds); |
| log.info("request :{}", request); |
| |
| InputStream stream = new ByteArrayInputStream(request.getBytes(StandardCharsets.UTF_8)); |
| String response = controller.post(deviceId, API_ENDPOINT, stream, |
| MediaType.APPLICATION_JSON_TYPE, String.class); |
| log.info("response :{}", response); |
| |
| try { |
| JsonNode json = new ObjectMapper().readTree(response); |
| } catch (IOException e) { |
| log.error("Cannot communicate with device {} , exception {}", deviceId, e); |
| } |
| } |
| |
| /** |
| * Generates a ObjectNode from a list of commands in String format. |
| * |
| * @param commands a list of commands |
| * @return an ObjectNode generated from a list of commands in String format |
| */ |
| private static String generate(List<String> commands) { |
| ObjectMapper om = new ObjectMapper(); |
| |
| ArrayNode cmds = om.createArrayNode(); |
| cmds.add(ENABLE); |
| commands.stream().forEach(cmds::add); //commands here |
| |
| ObjectNode parm = om.createObjectNode(); |
| parm.put(FORMAT, JSON); |
| parm.put(TIMESTAMPS, FALSE); |
| parm.put(CMDS, cmds); |
| parm.put(VERSION, VERSION_1); |
| |
| ObjectNode node = om.createObjectNode(); |
| node.put(JSONRPC, TWO_POINT_ZERO); |
| node.put(METHOD, RUN_CMDS); |
| |
| node.put(PARAMS, parm); |
| node.put(ID, REMOVE_CONTROLLERS); |
| |
| return node.toString(); |
| } |
| } |