Github user apiri commented on a diff in the pull request: https://github.com/apache/nifi/pull/290#discussion_r65120353 --- Diff: nifi-nar-bundles/nifi-lumberjack-bundle/nifi-lumberjack-processors/src/main/java/org/apache/nifi/processors/lumberjack/ListenLumberjack.java --- @@ -0,0 +1,237 @@ +/* + * 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.nifi.processors.lumberjack; + +import com.google.gson.Gson; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.behavior.WritesAttribute; +import org.apache.nifi.annotation.behavior.WritesAttributes; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.SeeAlso; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.components.ValidationContext; +import org.apache.nifi.components.ValidationResult; +import org.apache.nifi.flowfile.attributes.CoreAttributes; +import org.apache.nifi.flowfile.attributes.FlowFileAttributeKey; +import org.apache.nifi.processor.DataUnit; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.util.listen.AbstractListenEventBatchingProcessor; +import org.apache.nifi.processor.util.listen.dispatcher.AsyncChannelDispatcher; +import org.apache.nifi.processor.util.listen.dispatcher.ChannelDispatcher; +import org.apache.nifi.processor.util.listen.dispatcher.SocketChannelDispatcher; +import org.apache.nifi.processor.util.listen.event.EventFactory; +import org.apache.nifi.processor.util.listen.handler.ChannelHandlerFactory; +import org.apache.nifi.processor.util.listen.response.ChannelResponder; +import org.apache.nifi.processor.util.listen.response.ChannelResponse; +import org.apache.nifi.processors.lumberjack.event.LumberjackEvent; +import org.apache.nifi.processors.lumberjack.event.LumberjackEventFactory; +import org.apache.nifi.processors.lumberjack.frame.LumberjackEncoder; +import org.apache.nifi.processors.lumberjack.handler.LumberjackSocketChannelHandlerFactory; +import org.apache.nifi.processors.lumberjack.response.LumberjackChannelResponse; +import org.apache.nifi.processors.lumberjack.response.LumberjackResponse; +import org.apache.nifi.ssl.SSLContextService; + +import javax.net.ssl.SSLContext; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.charset.Charset; +import java.util.Arrays; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Collection; +import java.util.ArrayList; +import java.util.concurrent.BlockingQueue; + + +@InputRequirement(InputRequirement.Requirement.INPUT_FORBIDDEN) +@Tags({"listen", "lumberjack", "tcp", "logs"}) +@CapabilityDescription("Listens for Lumberjack messages being sent to a given port over TCP. Each message will be " + + "acknowledged after successfully writing the message to a FlowFile. Each FlowFile will contain data " + + "portion of one or more Lumberjack frames. In the case where the Lumberjack frames contain syslog messages, the " + + "output of this processor can be sent to a ParseSyslog processor for further processing.") +@WritesAttributes({ + @WritesAttribute(attribute="lumberjack.sender", description="The sending host of the messages."), + @WritesAttribute(attribute="lumberjack.port", description="The sending port the messages were received over."), + @WritesAttribute(attribute="lumberjack.sequencenumber", description="The sequence number of the message. Only included if <Batch Size> is 1."), + @WritesAttribute(attribute="lumberjack.*", description="The keys and respective values as sent by the lumberjack producer. Only included if <Batch Size> is 1."), + @WritesAttribute(attribute="mime.type", description="The mime.type of the content which is text/plain") +}) +@SeeAlso(classNames = {"org.apache.nifi.processors.standard.ParseSyslog"}) +public class ListenLumberjack extends AbstractListenEventBatchingProcessor<LumberjackEvent> { + + public static final PropertyDescriptor SSL_CONTEXT_SERVICE = new PropertyDescriptor.Builder() --- End diff -- Should this be required? At minimum, the logstash-forwarder requires specification of an SSL CA and the server would need to provide an identity that corresponds to the configured CA. If I am overlooking something, let me know. Certainly may have glossed over something in the forwarder docs.
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