Github user lewismc commented on a diff in the pull request:
https://github.com/apache/nutch/pull/138#discussion_r75551918
--- Diff:
src/plugin/publish-rabbitmq/src/java/org/apache/nutch/publisher/rabbitmq/RabbitMQPublisherImpl.java
---
@@ -0,0 +1,98 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.nutch.publisher.rabbitmq;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.util.StringUtils;
+import org.apache.nutch.publisher.NutchPublisher;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+
+public class RabbitMQPublisherImpl implements NutchPublisher{
+
+ private static String EXCHANGE_SERVER;
+ private static String EXCHANGE_TYPE;
+ private static String HOST;
+ private static final Logger LOG =
LoggerFactory.getLogger(RabbitMQPublisherImpl.class);
+ private static Channel channel;
+
+ @Override
+ public boolean setConfig(Configuration conf) {
+ // TODO Auto-generated method stub
+ try{
+ EXCHANGE_SERVER = conf.get("rabbitmq.exchange.server", "fetcher_log");
+ EXCHANGE_TYPE = conf.get("rabbitmq.exchange.type", "fanout");
+ HOST = conf.get("rabbitmq.host", "localhost");
+ ConnectionFactory factory = new ConnectionFactory();
+ factory.setHost(HOST);
+
+ Connection connection = factory.newConnection();
+ channel = connection.createChannel();
+ channel.exchangeDeclare(EXCHANGE_SERVER, EXCHANGE_TYPE);
+ LOG.info("Configured RabbitMQ publisher");
+ return true;
+ }catch(Exception e) {
+ LOG.error("Could not initialize RabbitMQ publisher - {}",
StringUtils.stringifyException(e));
+ return false;
+ }
+
+ }
+
+ @Override
+ public void publish(Object event, Configuration conf) {
+ // TODO Auto-generated method stub
+ String rountingKey = conf.get("rabbitmq.queue.routingkey", "");
+ try {
+ channel.basicPublish(EXCHANGE_SERVER, rountingKey, null,
getJSONString(event).getBytes());
+ } catch (Exception e) {
+ // TODO Auto-generated catch block
+ LOG.error("Error occured while publishing - {}",
StringUtils.stringifyException(e));
+ }
+ }
+
+ private String getJSONString(Object obj) {
+ ObjectMapper mapper = new ObjectMapper();
+ try {
+ return mapper.writeValueAsString(obj);
+ } catch (JsonProcessingException e) {
+ // TODO Auto-generated catch block
--- End diff --
Remove
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