[
https://issues.apache.org/jira/browse/NIFI-329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16056795#comment-16056795
]
ASF GitHub Bot commented on NIFI-329:
-------------------------------------
Github user trkurc commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1541#discussion_r123136109
--- Diff:
nifi-nar-bundles/nifi-irc-bundle/nifi-irc-processors/src/main/java/org/apache/nifi/processors/irc/PublishIRC.java
---
@@ -0,0 +1,139 @@
+/*
+ * 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.irc;
+
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.TriggerSerially;
+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.Tags;
+import org.apache.nifi.annotation.lifecycle.OnStopped;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessSessionFactory;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.InputStreamCallback;
+import org.apache.nifi.processors.irc.handlers.PublisherEventHandler;
+import org.apache.nifi.stream.io.StreamUtils;
+import org.apache.nifi.util.StopWatch;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.concurrent.TimeUnit;
+
+@Tags({"publish", "irc"})
+@TriggerSerially
+@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED)
+
+@CapabilityDescription("This processor implements a IRC client allowing
nifi to publish flowfile contents into a " +
+ "predefined IRC channel. " + "\n" +
+ "IMPORTANT NOTE: Due to the nature of the IRC protocol, no
delivery guarantees are offered. USE WITH CARE")
+
+@WritesAttributes({
+ @WritesAttribute(attribute = "irc.sender", description = "The IRC
nickname source user of the message"),
+ @WritesAttribute(attribute = "irc.channel", description = "The
channel from where the message was received "),
+ @WritesAttribute(attribute = "irc.server", description = "The
values IRC channel where the message was received from")})
+public class PublishIRC extends AbstractIRCProcessor {
+
+ private volatile PublisherEventHandler eventHandler;
+
+ @OnStopped
+ public void onUnscheduled(ProcessContext context) {
+ clearSetup(client, eventHandler);
+ client = null;
+ }
+
+ @Override
+ public void onTrigger(ProcessContext context, ProcessSessionFactory
sessionFactory) throws ProcessException {
+ ProcessSession session = sessionFactory.createSession();
+
+
+
+ if (client == null) {
+ // Initialise the handler that will be provided to the
setupClient super method
+ this.eventHandler = new PublisherEventHandler(context,
sessionFactory, getLogger());
+ this.client = ircClientService.getClient();
--- End diff --
I'm a bit confused why the client is set up and connected in onTrigger
instead on onScheduled
> Provide processor(s) to interact with IRC
> -----------------------------------------
>
> Key: NIFI-329
> URL: https://issues.apache.org/jira/browse/NIFI-329
> Project: Apache NiFi
> Issue Type: Sub-task
> Components: Examples
> Reporter: Joseph Witt
> Assignee: Andre F de Miranda
> Priority: Minor
> Labels: beginner
>
> - Processor(s) to interact with IRC (sending/receiving)
> One approach: A single processor which both sends and receives data from a
> given IRC channel. The user can configure the IRC host, username, password,
> channel, etc... The connection then is held open and the processor will
> produce an output flow file for every message received in the IRC channel
> which will have as attributes the message content, sender, time, etc.. That
> same processor can also read flow files from its queue which contain message
> text in an attribute. In this manner the processor can support bidirectional
> interaction with IRC.
> Would then also be interesting to make it really easy for a user to generate
> a message via the UI as well as easily to consume a message via the UI.
> These could be very generic processors/widgets for creation/consumption and
> good for these sorts of cases.
> There are active IRC channels which are great for demonstration of relatively
> active datastreams. Weather updates, Wikipedia updates, etc...
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