| /* |
| * Copyright 2015-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.ovsdb.controller.impl; |
| |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.ChannelInboundHandlerAdapter; |
| |
| import org.onosproject.ovsdb.controller.OvsdbNodeId; |
| import org.onosproject.ovsdb.controller.driver.OvsdbProviderService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.google.common.base.Strings; |
| |
| /** |
| * Channel handler deals with the node connection and dispatches |
| * ovsdb messages to the appropriate locations. |
| */ |
| public final class OvsdbJsonRpcHandler extends ChannelInboundHandlerAdapter { |
| private static final Logger log = LoggerFactory |
| .getLogger(OvsdbJsonRpcHandler.class); |
| private OvsdbNodeId ovsdbNodeId; |
| private OvsdbProviderService ovsdbProviderService; |
| |
| /** |
| * Constructor from a OvsdbNodeId ovsdbNodeId. |
| * |
| * @param ovsdbNodeId the ovsdbNodeId to use |
| */ |
| public OvsdbJsonRpcHandler(OvsdbNodeId ovsdbNodeId) { |
| super(); |
| this.ovsdbNodeId = ovsdbNodeId; |
| } |
| |
| /** |
| * Gets the ovsdbProviderService instance. |
| * |
| * @return the instance of the ovsdbProviderService |
| */ |
| public OvsdbProviderService getOvsdbProviderService() { |
| return ovsdbProviderService; |
| } |
| |
| /** |
| * Sets the ovsdbProviderService instance. |
| * |
| * @param ovsdbNodeDriver the ovsdbNodeDriver to use |
| */ |
| public void setOvsdbProviderService(OvsdbProviderService ovsdbNodeDriver) { |
| this.ovsdbProviderService = ovsdbNodeDriver; |
| } |
| |
| /** |
| * Gets the OvsdbNodeId instance. |
| * |
| * @return the instance of the OvsdbNodeId |
| */ |
| public OvsdbNodeId getNodeId() { |
| return ovsdbNodeId; |
| } |
| |
| /** |
| * Sets the ovsdb node id. |
| * |
| * @param ovsdbNodeId the ovsdbNodeId to use |
| */ |
| public void setNodeId(OvsdbNodeId ovsdbNodeId) { |
| this.ovsdbNodeId = ovsdbNodeId; |
| } |
| |
| /** |
| * Processes an JsonNode message received on the channel. |
| * |
| * @param jsonNode The OvsdbJsonRpcHandler that received the message |
| */ |
| private void processOvsdbMessage(JsonNode jsonNode) { |
| |
| log.debug("Handle ovsdb message"); |
| |
| if (jsonNode.has("result")) { |
| |
| log.debug("Handle ovsdb result"); |
| ovsdbProviderService.processResult(jsonNode); |
| |
| } else if (jsonNode.hasNonNull("method")) { |
| |
| log.debug("Handle ovsdb request"); |
| if (jsonNode.has("id") |
| && !Strings.isNullOrEmpty(jsonNode.get("id").asText())) { |
| ovsdbProviderService.processRequest(jsonNode); |
| } |
| |
| } |
| return; |
| } |
| |
| @Override |
| public void channelRead(ChannelHandlerContext ctx, Object msg) |
| throws Exception { |
| log.debug("Receive message from ovsdb"); |
| if (msg instanceof JsonNode) { |
| JsonNode jsonNode = (JsonNode) msg; |
| processOvsdbMessage(jsonNode); |
| } |
| } |
| |
| @Override |
| public void channelReadComplete(ChannelHandlerContext ctx) throws Exception { |
| ctx.flush(); |
| } |
| |
| @Override |
| public void exceptionCaught(ChannelHandlerContext context, Throwable cause) { |
| log.error("Exception inside channel handling pipeline.", cause); |
| context.close(); |
| } |
| } |