mirror of https://github.com/apache/nifi.git
NIFI-2615 Adding GetTCP processor
NIFI-2615 Addressing changes from P/R. Specifically, removing .gitignore as it should not be there for a nar. Removed non-used class. Changed name in notice
This commit is contained in:
parent
1a6802a016
commit
3626abd78a
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<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!--
|
||||
Licensed to the Apache Software Foundation (ASF) under one or more
|
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<parent>
|
||||
<groupId>org.apache.nifi</groupId>
|
||||
<artifactId>nifi-tcp-bundle</artifactId>
|
||||
<version>1.2.0-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<artifactId>nifi-tcp-nar</artifactId>
|
||||
<version>1.2.0-SNAPSHOT</version>
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||||
<packaging>nar</packaging>
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||||
<properties>
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||||
<maven.javadoc.skip>true</maven.javadoc.skip>
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||||
<source.skip>true</source.skip>
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||||
</properties>
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||||
|
||||
<dependencies>
|
||||
<dependency>
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||||
<groupId>org.apache.nifi</groupId>
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||||
<artifactId>nifi-tcp-processors</artifactId>
|
||||
<version>1.2.0-SNAPSHOT</version>
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||||
</dependency>
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||||
</dependencies>
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|
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</project>
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@ -0,0 +1,212 @@
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Apache License
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APACHE NIFI SUBCOMPONENTS:
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@ -0,0 +1,24 @@
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nifi-tcp-nar
|
||||
Copyright 2015-2017 The Apache Software Foundation
|
||||
|
||||
This product includes software developed at
|
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The Apache Software Foundation (http://www.apache.org/).
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||||
|
||||
===========================================
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||||
Apache Software License v2
|
||||
===========================================
|
||||
|
||||
The following binary components are provided under the Apache Software License v2
|
||||
|
||||
(ASLv2) Apache Commons IO
|
||||
The following NOTICE information applies:
|
||||
Apache Commons IO
|
||||
Copyright 2002-2017 The Apache Software Foundation
|
||||
|
||||
(ASLv2) Apache Commons Lang
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||||
The following NOTICE information applies:
|
||||
Apache Commons Lang
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||||
Copyright 2001-2015 The Apache Software Foundation
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|
||||
This product includes software from the Spring Framework,
|
||||
under the Apache License 2.0 (see: StringUtils.containsWhitespace())
|
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@ -0,0 +1,51 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor
|
||||
license agreements. See the NOTICE file distributed with this work for additional
|
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information regarding copyright ownership. The ASF licenses this file to
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You under the Apache License, Version 2.0 (the "License"); you may not use
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License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
|
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OF ANY KIND, either express or implied. See the License for the specific
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language governing permissions and limitations under the License. -->
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<parent>
|
||||
<groupId>org.apache.nifi</groupId>
|
||||
<artifactId>nifi-tcp-bundle</artifactId>
|
||||
<version>1.2.0-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<artifactId>nifi-tcp-processors</artifactId>
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.apache.nifi</groupId>
|
||||
<artifactId>nifi-api</artifactId>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.apache.nifi</groupId>
|
||||
<artifactId>nifi-processor-utils</artifactId>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.apache.nifi</groupId>
|
||||
<artifactId>nifi-mock</artifactId>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.slf4j</groupId>
|
||||
<artifactId>slf4j-simple</artifactId>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>junit</groupId>
|
||||
<artifactId>junit</artifactId>
|
||||
<version>4.11</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
</project>
|
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@ -0,0 +1,257 @@
|
|||
/*
|
||||
* Copyright 2014 the original author or authors.
|
||||
*
|
||||
* 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.apache.nifi.processors.gettcp;
|
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|
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import java.io.IOException;
|
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import java.net.InetSocketAddress;
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import java.nio.ByteBuffer;
|
||||
import java.nio.channels.NetworkChannel;
|
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import java.nio.channels.SelectionKey;
|
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import java.nio.channels.Selector;
|
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import java.nio.channels.SocketChannel;
|
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import java.util.HashSet;
|
||||
import java.util.Iterator;
|
||||
import java.util.Set;
|
||||
import java.util.concurrent.ExecutorService;
|
||||
import java.util.concurrent.Executors;
|
||||
import java.util.concurrent.atomic.AtomicBoolean;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
/**
|
||||
* Base class to implement async TCP Client/Server components
|
||||
*
|
||||
*/
|
||||
abstract class AbstractSocketHandler {
|
||||
|
||||
final Logger logger = LoggerFactory.getLogger(this.getClass());
|
||||
|
||||
private final ByteBuffer readingBuffer;
|
||||
|
||||
private final Runnable listenerTask;
|
||||
|
||||
private volatile ExecutorService listenerTaskExecutor;
|
||||
|
||||
final InetSocketAddress address;
|
||||
|
||||
volatile NetworkChannel rootChannel;
|
||||
|
||||
volatile Selector selector;
|
||||
|
||||
private final AtomicBoolean isRunning;
|
||||
|
||||
protected final byte endOfMessageByte;
|
||||
|
||||
/**
|
||||
*
|
||||
* @param address
|
||||
* @param server
|
||||
*/
|
||||
public AbstractSocketHandler(InetSocketAddress address, int readingBufferSize, byte endOfMessageByte) {
|
||||
this.address = address;
|
||||
this.listenerTask = new ListenerTask();
|
||||
this.readingBuffer = ByteBuffer.allocate(readingBufferSize);
|
||||
this.isRunning = new AtomicBoolean();
|
||||
this.endOfMessageByte = endOfMessageByte;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @return
|
||||
*/
|
||||
public void start() {
|
||||
if (this.isRunning.compareAndSet(false, true)) {
|
||||
try {
|
||||
if (this.selector == null || !this.selector.isOpen()) {
|
||||
this.selector = Selector.open();
|
||||
InetSocketAddress connectedAddress = this.connect();
|
||||
this.listenerTaskExecutor = Executors.newCachedThreadPool();
|
||||
this.listenerTaskExecutor.execute(this.listenerTask);
|
||||
if (logger.isDebugEnabled()) {
|
||||
logger.debug("Started listener for " + AbstractSocketHandler.this.getClass().getSimpleName());
|
||||
}
|
||||
if (logger.isInfoEnabled()) {
|
||||
logger.info("Successfully bound to " + connectedAddress);
|
||||
}
|
||||
}
|
||||
} catch (Exception e) {
|
||||
this.stop();
|
||||
throw new IllegalStateException("Failed to start " + this.getClass().getName(), e);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param force
|
||||
*/
|
||||
public void stop() {
|
||||
if (this.isRunning.compareAndSet(true, false)) {
|
||||
try {
|
||||
if (this.selector != null && this.selector.isOpen()) { // since stop must be idempotent, we need to check if selector is open to avoid ClosedSelectorException
|
||||
Set<SelectionKey> selectionKeys = new HashSet<>(this.selector.keys());
|
||||
for (SelectionKey key : selectionKeys) {
|
||||
key.cancel();
|
||||
try {
|
||||
key.channel().close();
|
||||
} catch (IOException e) {
|
||||
logger.warn("Failure while closing channel", e);
|
||||
}
|
||||
}
|
||||
try {
|
||||
this.selector.close();
|
||||
} catch (Exception e) {
|
||||
logger.warn("Failure while closinig selector", e);
|
||||
}
|
||||
logger.info(this.getClass().getSimpleName() + " is stopped listening on " + address);
|
||||
}
|
||||
} finally {
|
||||
if (this.listenerTaskExecutor != null) {
|
||||
this.listenerTaskExecutor.shutdown();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if this component is running.
|
||||
*/
|
||||
public boolean isRunning() {
|
||||
return this.isRunning.get();
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @throws Exception
|
||||
*/
|
||||
abstract InetSocketAddress connect() throws Exception;
|
||||
|
||||
/**
|
||||
* Will process the data received from the channel
|
||||
* @param selectionKey key for the channel the data came from
|
||||
* @param buffer buffer of received data
|
||||
* @throws IOException
|
||||
*/
|
||||
abstract void processData(SelectionKey selectionKey, ByteBuffer buffer) throws IOException;
|
||||
|
||||
/**
|
||||
*
|
||||
* @param selectionKey
|
||||
* @throws IOException
|
||||
*/
|
||||
void doAccept(SelectionKey selectionKey) throws IOException {
|
||||
// noop
|
||||
}
|
||||
|
||||
/**
|
||||
* Main listener task which will process delegate {@link SelectionKey}
|
||||
* selected from the {@link Selector} to the appropriate processing method
|
||||
* (e.g., accept, read, write etc.)
|
||||
*/
|
||||
private class ListenerTask implements Runnable {
|
||||
@Override
|
||||
public void run() {
|
||||
try {
|
||||
while (AbstractSocketHandler.this.rootChannel != null && AbstractSocketHandler.this.rootChannel.isOpen() && AbstractSocketHandler.this.selector.isOpen()) {
|
||||
if (AbstractSocketHandler.this.selector.isOpen() && AbstractSocketHandler.this.selector.select(10) > 0) {
|
||||
Iterator<SelectionKey> keys = AbstractSocketHandler.this.selector.selectedKeys().iterator();
|
||||
while (keys.hasNext()) {
|
||||
SelectionKey selectionKey = keys.next();
|
||||
keys.remove();
|
||||
if (selectionKey.isValid()) {
|
||||
if (selectionKey.isAcceptable()) {
|
||||
this.accept(selectionKey);
|
||||
} else if (selectionKey.isReadable()) {
|
||||
this.read(selectionKey);
|
||||
} else if (selectionKey.isConnectable()) {
|
||||
this.connect(selectionKey);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
} catch (Exception e) {
|
||||
logger.error("Exception in socket listener loop", e);
|
||||
}
|
||||
|
||||
logger.debug("Exited Listener loop.");
|
||||
AbstractSocketHandler.this.stop();
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private void accept(SelectionKey selectionKey) throws IOException {
|
||||
AbstractSocketHandler.this.doAccept(selectionKey);
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private void connect(SelectionKey selectionKey) throws IOException {
|
||||
SocketChannel clientChannel = (SocketChannel) selectionKey.channel();
|
||||
if (clientChannel.isConnectionPending()) {
|
||||
clientChannel.finishConnect();
|
||||
}
|
||||
clientChannel.register(AbstractSocketHandler.this.selector, SelectionKey.OP_READ);
|
||||
}
|
||||
|
||||
/**
|
||||
* The main read loop which reads packets from the channel and sends
|
||||
* them to implementations of
|
||||
* {@link AbstractSocketHandler#processData(SelectionKey, ByteBuffer)}.
|
||||
* So if a given implementation is a Server it is probably going to
|
||||
* broadcast received message to all connected sockets (e.g., chat
|
||||
* server). If such implementation is the Client, then it is most likely
|
||||
* the end of the road where message is processed.
|
||||
*/
|
||||
private void read(SelectionKey selectionKey) throws IOException {
|
||||
SocketChannel socketChannel = (SocketChannel) selectionKey.channel();
|
||||
|
||||
int count = -1;
|
||||
boolean finished = false;
|
||||
while (!finished && (count = socketChannel.read(AbstractSocketHandler.this.readingBuffer)) > 0){
|
||||
byte lastByte = AbstractSocketHandler.this.readingBuffer.get(AbstractSocketHandler.this.readingBuffer.position() - 1);
|
||||
if (AbstractSocketHandler.this.readingBuffer.remaining() == 0 || lastByte == AbstractSocketHandler.this.endOfMessageByte) {
|
||||
this.processBuffer(selectionKey);
|
||||
if (lastByte == AbstractSocketHandler.this.endOfMessageByte) {
|
||||
finished = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (count == -1) {
|
||||
if (AbstractSocketHandler.this.readingBuffer.position() > 0) {// flush remainder, since nothing else is coming
|
||||
this.processBuffer(selectionKey);
|
||||
}
|
||||
selectionKey.cancel();
|
||||
socketChannel.close();
|
||||
if (logger.isInfoEnabled()) {
|
||||
logger.info("Connection closed by: " + socketChannel.socket());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void processBuffer(SelectionKey selectionKey) throws IOException {
|
||||
AbstractSocketHandler.this.readingBuffer.flip();
|
||||
byte[] message = new byte[AbstractSocketHandler.this.readingBuffer.limit()];
|
||||
AbstractSocketHandler.this.readingBuffer.get(message);
|
||||
AbstractSocketHandler.this.processData(selectionKey, ByteBuffer.wrap(message));
|
||||
AbstractSocketHandler.this.readingBuffer.clear();
|
||||
}
|
||||
}
|
||||
}
|
|
@ -0,0 +1,302 @@
|
|||
/*
|
||||
* 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.gettcp;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.OutputStream;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collections;
|
||||
import java.util.HashMap;
|
||||
import java.util.HashSet;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
import java.util.Set;
|
||||
import java.util.concurrent.ScheduledThreadPoolExecutor;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
|
||||
import org.apache.nifi.annotation.behavior.InputRequirement;
|
||||
import org.apache.nifi.annotation.behavior.SideEffectFree;
|
||||
import org.apache.nifi.annotation.behavior.TriggerSerially;
|
||||
import org.apache.nifi.annotation.behavior.WritesAttribute;
|
||||
import org.apache.nifi.annotation.documentation.CapabilityDescription;
|
||||
import org.apache.nifi.annotation.documentation.Tags;
|
||||
import org.apache.nifi.annotation.lifecycle.OnScheduled;
|
||||
import org.apache.nifi.annotation.lifecycle.OnStopped;
|
||||
import org.apache.nifi.components.PropertyDescriptor;
|
||||
import org.apache.nifi.flowfile.FlowFile;
|
||||
import org.apache.nifi.processor.AbstractSessionFactoryProcessor;
|
||||
import org.apache.nifi.processor.ProcessContext;
|
||||
import org.apache.nifi.processor.ProcessSession;
|
||||
import org.apache.nifi.processor.ProcessSessionFactory;
|
||||
import org.apache.nifi.processor.Relationship;
|
||||
import org.apache.nifi.processor.exception.ProcessException;
|
||||
import org.apache.nifi.processor.io.OutputStreamCallback;
|
||||
import org.apache.nifi.processor.util.StandardValidators;
|
||||
|
||||
@TriggerSerially
|
||||
@SideEffectFree
|
||||
@Tags({"get", "fetch", "poll", "tcp", "ingest", "source", "input"})
|
||||
@InputRequirement(InputRequirement.Requirement.INPUT_FORBIDDEN)
|
||||
@CapabilityDescription("Connects over TCP to the provided endpoint(s). Received data will be written as content to the FlowFile")
|
||||
@WritesAttribute(attribute = "source.endpoint", description = "The address of the source endpoint the message came from")
|
||||
public class GetTCP extends AbstractSessionFactoryProcessor {
|
||||
|
||||
private static String SOURCE_ENDPOINT_ATTRIBUTE = "source.endpoint";
|
||||
|
||||
public static final PropertyDescriptor ENDPOINT_LIST = new PropertyDescriptor.Builder()
|
||||
.name("endpoint-list")
|
||||
.displayName("Endpoint List")
|
||||
.description("A comma delimited list of the endpoints to connect to. The format should be " +
|
||||
"<server_address>:<port>. Only one server will be connected to at a time, the others " +
|
||||
"will be used as fail overs.")
|
||||
.required(true)
|
||||
.addValidator(GetTCPUtils.ENDPOINT_VALIDATOR)
|
||||
.build();
|
||||
|
||||
public static final PropertyDescriptor CONNECTION_ATTEMPT_COUNT = new PropertyDescriptor.Builder()
|
||||
.name("connection-attempt-timeout")
|
||||
.displayName("Connection Attempt Count")
|
||||
.description("The number of times to try and establish a connection, before using a backup host if available." +
|
||||
" This same attempt count would be used for a backup host as well.")
|
||||
.required(true)
|
||||
.addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR)
|
||||
.defaultValue("3")
|
||||
.build();
|
||||
|
||||
public static final PropertyDescriptor RECONNECT_INTERVAL = new PropertyDescriptor.Builder()
|
||||
.name("reconnect-interval")
|
||||
.displayName("Reconnect interval")
|
||||
.description("The number of seconds to wait before attempting to reconnect to the endpoint.")
|
||||
.required(true)
|
||||
.addValidator(StandardValidators.TIME_PERIOD_VALIDATOR)
|
||||
.defaultValue("5 sec")
|
||||
.build();
|
||||
|
||||
public static final PropertyDescriptor RECEIVE_BUFFER_SIZE = new PropertyDescriptor.Builder()
|
||||
.name("receive-buffer-size")
|
||||
.displayName("Receive Buffer Size")
|
||||
.description("The size of the buffer to receive data in")
|
||||
.required(false)
|
||||
.defaultValue("2048")
|
||||
.addValidator(StandardValidators.createLongValidator(1, 2048, true))
|
||||
.build();
|
||||
|
||||
public static final PropertyDescriptor END_OF_MESSAGE_BYTE = new PropertyDescriptor.Builder()
|
||||
.name("end-of-message-byte")
|
||||
.displayName("End of message delimiter byte")
|
||||
.description("Byte value which denotes end of message. Must be specified as integer within "
|
||||
+ "the valid byte range (-128 thru 127). For example, '13' = Carriage return and '10' = New line. Default '13'.")
|
||||
.required(true)
|
||||
.defaultValue("13")
|
||||
.addValidator(StandardValidators.createLongValidator(-128, 127, true))
|
||||
.build();
|
||||
|
||||
|
||||
public static final Relationship REL_SUCCESS = new Relationship.Builder()
|
||||
.name("Success")
|
||||
.description("The relationship that all sucessful messages from the endpoint will be sent to.")
|
||||
.build();
|
||||
|
||||
public static final Relationship REL_PARTIAL = new Relationship.Builder()
|
||||
.name("Partial")
|
||||
.description("The relationship that all incomplete messages from the endpoint will be sent to. "
|
||||
+ "Incomplete message is the message that doesn't end with 'End of message delimiter byte'. "
|
||||
+ "This can happen when 'Receive Buffer Size' is smaller then the incoming message. If that happens that "
|
||||
+ "the subsequent message that completes the previous incomplete message will also end up in this "
|
||||
+ "relationship, after which subsequent 'complete' messages will go to 'success'.")
|
||||
.build();
|
||||
|
||||
private final static List<PropertyDescriptor> DESCRIPTORS;
|
||||
|
||||
private final static Set<Relationship> RELATIONSHIPS;
|
||||
|
||||
/*
|
||||
* Will ensure that the list of property descriptors is build only once.
|
||||
* Will also create a Set of relationships
|
||||
*/
|
||||
static {
|
||||
List<PropertyDescriptor> _propertyDescriptors = new ArrayList<>();
|
||||
_propertyDescriptors.add(ENDPOINT_LIST);
|
||||
_propertyDescriptors.add(CONNECTION_ATTEMPT_COUNT);
|
||||
_propertyDescriptors.add(RECONNECT_INTERVAL);
|
||||
_propertyDescriptors.add(RECEIVE_BUFFER_SIZE);
|
||||
_propertyDescriptors.add(END_OF_MESSAGE_BYTE);
|
||||
|
||||
DESCRIPTORS = Collections.unmodifiableList(_propertyDescriptors);
|
||||
|
||||
Set<Relationship> _relationships = new HashSet<>();
|
||||
_relationships.add(REL_SUCCESS);
|
||||
_relationships.add(REL_PARTIAL);
|
||||
RELATIONSHIPS = Collections.unmodifiableSet(_relationships);
|
||||
}
|
||||
|
||||
private final Map<String, String> dynamicAttributes = new HashMap<>();
|
||||
|
||||
private final Map<String, ReceivingClient> liveTcpClients = new HashMap<>();
|
||||
|
||||
private volatile NiFiDelegatingMessageHandler delegatingMessageHandler;
|
||||
|
||||
private volatile ScheduledThreadPoolExecutor clientScheduler;
|
||||
|
||||
private volatile String originalServerAddressList;
|
||||
|
||||
private volatile int receiveBufferSize;
|
||||
|
||||
private volatile int connectionAttemptCount;
|
||||
|
||||
private volatile long reconnectInterval;
|
||||
|
||||
private volatile byte endOfMessageByte;
|
||||
|
||||
@Override
|
||||
public Set<Relationship> getRelationships() {
|
||||
return RELATIONSHIPS;
|
||||
}
|
||||
|
||||
@Override
|
||||
public final List<PropertyDescriptor> getSupportedPropertyDescriptors() {
|
||||
return DESCRIPTORS;
|
||||
}
|
||||
|
||||
@OnScheduled
|
||||
public void onScheduled(final ProcessContext context) throws ProcessException {
|
||||
this.receiveBufferSize = context.getProperty(RECEIVE_BUFFER_SIZE).asInteger();
|
||||
this.originalServerAddressList = context.getProperty(ENDPOINT_LIST).getValue();
|
||||
this.endOfMessageByte = ((byte) context.getProperty(END_OF_MESSAGE_BYTE).asInteger().intValue());
|
||||
this.connectionAttemptCount = context.getProperty(CONNECTION_ATTEMPT_COUNT).asInteger();
|
||||
this.reconnectInterval = context.getProperty(RECONNECT_INTERVAL).asTimePeriod(TimeUnit.MILLISECONDS);
|
||||
|
||||
this.clientScheduler = new ScheduledThreadPoolExecutor(originalServerAddressList.split(",").length + 1);
|
||||
this.clientScheduler.setKeepAliveTime(10, TimeUnit.SECONDS);
|
||||
this.clientScheduler.allowCoreThreadTimeOut(true);
|
||||
|
||||
for (final Map.Entry<PropertyDescriptor, String> entry : context.getProperties().entrySet()) {
|
||||
final PropertyDescriptor descriptor = entry.getKey();
|
||||
if (descriptor.isDynamic()) {
|
||||
this.dynamicAttributes.put(descriptor.getName(), entry.getValue());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onTrigger(ProcessContext context, ProcessSessionFactory sessionFactory) throws ProcessException {
|
||||
if (this.delegatingMessageHandler == null) {
|
||||
this.delegatingMessageHandler = new NiFiDelegatingMessageHandler(sessionFactory);
|
||||
}
|
||||
this.run(context);
|
||||
context.yield();
|
||||
}
|
||||
|
||||
@OnStopped
|
||||
public void tearDown() throws ProcessException {
|
||||
for (ReceivingClient client : this.liveTcpClients.values()) {
|
||||
try {
|
||||
client.stop();
|
||||
} catch (Exception e) {
|
||||
this.getLogger().warn("Failure while stopping client '" + client + "'", e);
|
||||
}
|
||||
}
|
||||
this.liveTcpClients.clear();
|
||||
this.clientScheduler.shutdown();
|
||||
try {
|
||||
if (!this.clientScheduler.awaitTermination(10000, TimeUnit.MILLISECONDS)) {
|
||||
this.getLogger().info("Failed to stop client scheduler in 10 sec. Terminating");
|
||||
this.clientScheduler.shutdownNow();
|
||||
}
|
||||
} catch (InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
}
|
||||
this.getLogger().info("Processor has successfully shut down");
|
||||
}
|
||||
|
||||
@Override
|
||||
protected PropertyDescriptor getSupportedDynamicPropertyDescriptor(final String propertyDescriptorName) {
|
||||
return new PropertyDescriptor.Builder().required(false).name(propertyDescriptorName)
|
||||
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR).dynamic(true).expressionLanguageSupported(true)
|
||||
.build();
|
||||
}
|
||||
|
||||
private void run(ProcessContext context) {
|
||||
String[] serverAddresses = this.originalServerAddressList.split(",");
|
||||
for (String hostPortPair : serverAddresses) {
|
||||
ReceivingClient client;
|
||||
if (!this.liveTcpClients.containsKey(hostPortPair)) {
|
||||
String[] hostAndPort = hostPortPair.split(":");
|
||||
InetSocketAddress address = new InetSocketAddress(hostAndPort[0], Integer.parseInt(hostAndPort[1]));
|
||||
client = new ReceivingClient(address, this.clientScheduler, this.receiveBufferSize, this.endOfMessageByte);
|
||||
client.setReconnectAttempts(this.connectionAttemptCount);
|
||||
client.setDelayMillisBeforeReconnect(this.reconnectInterval);
|
||||
client.setMessageHandler(this.delegatingMessageHandler);
|
||||
this.liveTcpClients.put(hostPortPair, client);
|
||||
this.startClient(client);
|
||||
} else {
|
||||
client = this.liveTcpClients.get(hostPortPair);
|
||||
if (!client.isRunning()) {
|
||||
client.stop(); // primarily for cleanup in the event of abnormal termination
|
||||
this.startClient(client);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void startClient(ReceivingClient client) {
|
||||
this.clientScheduler.execute(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
try {
|
||||
client.start();
|
||||
} catch (Exception e) {
|
||||
getLogger().warn("Failed to start listening client. Will attempt to start on another trigger cycle.", e);
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private class NiFiDelegatingMessageHandler implements MessageHandler {
|
||||
private final ProcessSessionFactory sessionFactory;
|
||||
|
||||
NiFiDelegatingMessageHandler(ProcessSessionFactory sessionFactory) {
|
||||
this.sessionFactory = sessionFactory;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void handle(InetSocketAddress sourceAddress, byte[] message, boolean partialMessage) {
|
||||
ProcessSession session = this.sessionFactory.createSession();
|
||||
FlowFile flowFile = session.create();
|
||||
flowFile = session.write(flowFile, new OutputStreamCallback() {
|
||||
@Override
|
||||
public void process(OutputStream out) throws IOException {
|
||||
out.write(message);
|
||||
}
|
||||
});
|
||||
flowFile = session.putAttribute(flowFile, SOURCE_ENDPOINT_ATTRIBUTE, sourceAddress.toString());
|
||||
if (!GetTCP.this.dynamicAttributes.isEmpty()) {
|
||||
flowFile = session.putAllAttributes(flowFile, GetTCP.this.dynamicAttributes);
|
||||
}
|
||||
if (partialMessage) {
|
||||
session.transfer(flowFile, REL_PARTIAL);
|
||||
} else {
|
||||
session.transfer(flowFile, REL_SUCCESS);
|
||||
}
|
||||
session.commit();
|
||||
}
|
||||
}
|
||||
}
|
|
@ -0,0 +1,85 @@
|
|||
/*
|
||||
* 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.gettcp;
|
||||
|
||||
import java.util.regex.Matcher;
|
||||
import java.util.regex.Pattern;
|
||||
|
||||
import org.apache.nifi.components.ValidationContext;
|
||||
import org.apache.nifi.components.ValidationResult;
|
||||
import org.apache.nifi.components.Validator;
|
||||
import org.apache.nifi.processor.util.StandardValidators;
|
||||
|
||||
class GetTCPUtils {
|
||||
|
||||
private static final Pattern validIpAddressRegex = Pattern.compile(
|
||||
"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$");
|
||||
|
||||
private static final Pattern validHostnameRegex = Pattern.compile(
|
||||
"^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\-]*[a-zA-Z0-9])\\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\\-]*[A-Za-z0-9])$");
|
||||
|
||||
private static final Pattern looksLikeIpRegex = Pattern.compile("^(\\d+)\\.(\\d+)\\.(\\d+)\\.(\\d+)$");
|
||||
|
||||
public static final Validator ENDPOINT_VALIDATOR = new Validator() {
|
||||
@Override
|
||||
public ValidationResult validate(final String subject, final String value, final ValidationContext context) {
|
||||
if (null == value || value.isEmpty()) {
|
||||
return new ValidationResult.Builder().subject(subject).input(value).valid(false)
|
||||
.explanation(subject + " cannot be empty").build();
|
||||
}
|
||||
// The format should be <host>:<port>{,<host>:<port>}
|
||||
// first split on ,
|
||||
final String[] hostPortPairs = value.split(",");
|
||||
boolean validHostPortPairs = true;
|
||||
String reason = "";
|
||||
String offendingSubject = subject;
|
||||
|
||||
if (0 == hostPortPairs.length) {
|
||||
return new ValidationResult.Builder().subject(subject).input(value).valid(false)
|
||||
.explanation(offendingSubject + " cannot be empty").build();
|
||||
}
|
||||
|
||||
for (int i = 0; i < hostPortPairs.length && validHostPortPairs; i++) {
|
||||
String[] parts = hostPortPairs[i].split(":");
|
||||
|
||||
if (parts.length != 2) {
|
||||
validHostPortPairs = false;
|
||||
reason = " of malformed URL '" + hostPortPairs[i] + "'";
|
||||
} else {
|
||||
Matcher validHost = validHostnameRegex.matcher(parts[0]);
|
||||
Matcher validIp = validIpAddressRegex.matcher(parts[0]);
|
||||
Matcher looksLikeValidIp = looksLikeIpRegex.matcher(parts[0]);
|
||||
if (!validHost.find()) {
|
||||
validHostPortPairs = false;
|
||||
reason = " it contains invalid characters '" + parts[0] + "'";
|
||||
} else if (looksLikeValidIp.find() && !validIp.find()) {
|
||||
validHostPortPairs = false;
|
||||
reason = " it appears to be represented as an IP address which is out of legal range '" + parts[0] + "'";
|
||||
}
|
||||
ValidationResult result = StandardValidators.PORT_VALIDATOR.validate(parts[1], parts[1], context);
|
||||
if (!result.isValid()) {
|
||||
validHostPortPairs = false;
|
||||
reason = result.getExplanation();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return new ValidationResult.Builder().subject(offendingSubject).input(value).explanation(reason)
|
||||
.valid(validHostPortPairs).build();
|
||||
}
|
||||
};
|
||||
}
|
|
@ -0,0 +1,24 @@
|
|||
/*
|
||||
* 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.gettcp;
|
||||
|
||||
import java.net.InetSocketAddress;
|
||||
|
||||
public interface MessageHandler {
|
||||
|
||||
void handle(InetSocketAddress sourceAddress, byte[] message, boolean partialMessage);
|
||||
}
|
|
@ -0,0 +1,166 @@
|
|||
/*
|
||||
* Copyright 2014 the original author or authors.
|
||||
*
|
||||
* 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.apache.nifi.processors.gettcp;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.channels.SelectionKey;
|
||||
import java.nio.channels.SocketChannel;
|
||||
import java.util.concurrent.CountDownLatch;
|
||||
import java.util.concurrent.ScheduledExecutorService;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
import java.util.concurrent.atomic.AtomicInteger;
|
||||
import java.util.concurrent.atomic.AtomicReference;
|
||||
|
||||
/**
|
||||
* Implementation of receiving network client.
|
||||
*/
|
||||
public class ReceivingClient extends AbstractSocketHandler {
|
||||
|
||||
private final ScheduledExecutorService connectionScheduler;
|
||||
|
||||
private volatile InetSocketAddress backupAddress;
|
||||
|
||||
private volatile int reconnectAttempts;
|
||||
|
||||
private volatile long delayMillisBeforeReconnect;
|
||||
|
||||
private volatile MessageHandler messageHandler;
|
||||
|
||||
private volatile InetSocketAddress connectedAddress;
|
||||
|
||||
public ReceivingClient(InetSocketAddress address, ScheduledExecutorService connectionScheduler, int readingBufferSize, byte endOfMessageByte) {
|
||||
super(address, readingBufferSize, endOfMessageByte);
|
||||
this.connectionScheduler = connectionScheduler;
|
||||
}
|
||||
|
||||
public void setBackupAddress(InetSocketAddress backupAddress) {
|
||||
this.backupAddress = backupAddress;
|
||||
}
|
||||
|
||||
public void setReconnectAttempts(int reconnectAttempts) {
|
||||
this.reconnectAttempts = reconnectAttempts;
|
||||
}
|
||||
|
||||
public void setDelayMillisBeforeReconnect(long delayMillisBeforeReconnect) {
|
||||
this.delayMillisBeforeReconnect = delayMillisBeforeReconnect;
|
||||
}
|
||||
|
||||
public void setMessageHandler(MessageHandler messageHandler) {
|
||||
this.messageHandler = messageHandler;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
@Override
|
||||
InetSocketAddress connect() throws Exception {
|
||||
CountDownLatch latch = new CountDownLatch(1);
|
||||
AtomicInteger attempt = new AtomicInteger();
|
||||
AtomicReference<Exception> connectionError = new AtomicReference<Exception>();
|
||||
this.connectionScheduler.execute(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
try {
|
||||
rootChannel = doConnect(address);
|
||||
latch.countDown();
|
||||
connectedAddress = address;
|
||||
} catch (Exception e) {
|
||||
if (logger.isInfoEnabled()) {
|
||||
logger.info("Failed to connect to primary endpoint '" + address + "'.");
|
||||
}
|
||||
if (attempt.incrementAndGet() <= reconnectAttempts) {
|
||||
if (logger.isInfoEnabled()) {
|
||||
logger.info("Will attempt to reconnect to '" + address + "'.");
|
||||
}
|
||||
connectionScheduler.schedule(this, delayMillisBeforeReconnect, TimeUnit.MILLISECONDS);
|
||||
} else {
|
||||
if (backupAddress == null) {
|
||||
connectionError.set(e);
|
||||
} else {
|
||||
try {
|
||||
if (logger.isInfoEnabled()) {
|
||||
logger.info("Every attempt to connect to '" + address + "' has failed.");
|
||||
logger.info("Attempting to conect to secondary endppoint '" + backupAddress + "'.");
|
||||
}
|
||||
rootChannel = doConnect(backupAddress);
|
||||
connectedAddress = backupAddress;
|
||||
} catch (Exception re) {
|
||||
logger.error("Failed to connect to secondary endpoint.");
|
||||
connectionError.set(re);
|
||||
}
|
||||
}
|
||||
latch.countDown();
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
try {
|
||||
boolean finishedTask = latch.await(this.reconnectAttempts * delayMillisBeforeReconnect + 2000, TimeUnit.MILLISECONDS);
|
||||
if (finishedTask){
|
||||
if (connectionError.get() != null) {
|
||||
throw connectionError.get();
|
||||
}
|
||||
} else {
|
||||
logger.error("Exceeded wait time to connect. Possible deadlock, please report!. Interrupting."); // should never happen!
|
||||
}
|
||||
} catch (InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
throw new IllegalStateException("Current thread is interrupted");
|
||||
}
|
||||
return this.connectedAddress;
|
||||
}
|
||||
|
||||
private SocketChannel doConnect(InetSocketAddress addressToConnect) throws IOException {
|
||||
SocketChannel channel = SocketChannel.open();
|
||||
if (channel.connect(addressToConnect)) {
|
||||
channel.configureBlocking(false);
|
||||
channel.register(this.selector, SelectionKey.OP_READ);
|
||||
} else {
|
||||
throw new IllegalStateException("Failed to connect to Server at: " + addressToConnect);
|
||||
}
|
||||
return channel;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
@Override
|
||||
void processData(SelectionKey selectionKey, ByteBuffer messageBuffer) throws IOException {
|
||||
byte[] message = new byte[messageBuffer.limit()];
|
||||
logger.debug("Received message(size=" + message.length + ")");
|
||||
messageBuffer.get(message);
|
||||
byte lastByteValue = message[message.length - 1];
|
||||
boolean partialMessage = false;
|
||||
if (lastByteValue != this.endOfMessageByte) {
|
||||
partialMessage = true;
|
||||
selectionKey.attach(1);
|
||||
} else {
|
||||
Integer wasLastPartial = (Integer) selectionKey.attachment();
|
||||
if (wasLastPartial != null) {
|
||||
if (wasLastPartial.intValue() == 1) {
|
||||
partialMessage = true;
|
||||
selectionKey.attach(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (this.messageHandler != null) {
|
||||
this.messageHandler.handle(this.connectedAddress, message, partialMessage);
|
||||
}
|
||||
}
|
||||
}
|
|
@ -0,0 +1,15 @@
|
|||
# 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.
|
||||
org.apache.nifi.processors.gettcp.GetTCP
|
|
@ -0,0 +1,199 @@
|
|||
package org.apache.nifi.processors.gettcp;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
import static org.junit.Assert.fail;
|
||||
|
||||
import java.io.PrintWriter;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.net.Socket;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
import java.util.concurrent.ExecutorService;
|
||||
import java.util.concurrent.Executors;
|
||||
import java.util.concurrent.ScheduledExecutorService;
|
||||
|
||||
import org.junit.After;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
|
||||
public class ReceivingClientTest {
|
||||
|
||||
private final static byte EOM = '\r';
|
||||
|
||||
private ScheduledExecutorService scheduler;
|
||||
|
||||
@Before
|
||||
public void before() {
|
||||
this.scheduler = Executors.newScheduledThreadPool(1);
|
||||
}
|
||||
|
||||
@After
|
||||
public void after() {
|
||||
this.scheduler.shutdownNow();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void validateSuccessfullConnectionAndCommunication() throws Exception {
|
||||
String msgToSend = "Hello from validateSuccessfullConnectionAndCommunication";
|
||||
InetSocketAddress address = new InetSocketAddress(9999);
|
||||
Server server = new Server(address, 1024, EOM);
|
||||
server.start();
|
||||
|
||||
ReceivingClient client = new ReceivingClient(address, this.scheduler, 1024, EOM);
|
||||
StringBuilder stringBuilder = new StringBuilder();
|
||||
client.setMessageHandler((fromAddress, message, partialMessage) -> stringBuilder.append(new String(message, StandardCharsets.UTF_8)));
|
||||
client.start();
|
||||
assertTrue(client.isRunning());
|
||||
|
||||
this.sendToSocket(address, msgToSend);
|
||||
Thread.sleep(200);
|
||||
assertEquals("", stringBuilder.toString());
|
||||
this.sendToSocket(address, "\r");
|
||||
Thread.sleep(200);
|
||||
assertEquals(msgToSend + "\r", stringBuilder.toString());
|
||||
|
||||
client.stop();
|
||||
server.stop();
|
||||
assertFalse(client.isRunning());
|
||||
assertFalse(server.isRunning());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void validateSuccessfullConnectionAndCommunicationWithClientBufferSmallerThenMessage() throws Exception {
|
||||
String msgToSend = "Hello from validateSuccessfullConnectionAndCommunicationWithClientBufferSmallerThenMessage";
|
||||
InetSocketAddress address = new InetSocketAddress(9999);
|
||||
Server server = new Server(address, 1024, EOM);
|
||||
server.start();
|
||||
|
||||
ReceivingClient client = new ReceivingClient(address, this.scheduler, 64, EOM);
|
||||
List<String> messages = new ArrayList<>();
|
||||
client.setMessageHandler((fromAddress, message, partialMessage) -> messages.add(new String(message, StandardCharsets.UTF_8)));
|
||||
client.start();
|
||||
assertTrue(client.isRunning());
|
||||
|
||||
this.sendToSocket(address, msgToSend);
|
||||
this.sendToSocket(address, "\r");
|
||||
Thread.sleep(200);
|
||||
assertEquals("Hello from validateSuccessfullConnectionAndCommunicationWithClie", messages.get(0));
|
||||
assertEquals("ntBufferSmallerThenMessage\r", messages.get(1));
|
||||
|
||||
client.stop();
|
||||
server.stop();
|
||||
assertFalse(client.isRunning());
|
||||
assertFalse(server.isRunning());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void validateMessageSendBeforeAfterClientConnectDisconnectNoEndOfMessageByte() throws Exception {
|
||||
String msgToSend = "Hello from validateMessageSendBeforeAfterClientConnectDisconnectNoEndOfMessageByte";
|
||||
InetSocketAddress address = new InetSocketAddress(9999);
|
||||
Server server = new Server(address, 1024, EOM);
|
||||
server.start();
|
||||
this.sendToSocket(address, "foo"); // validates no unexpected errors
|
||||
|
||||
ReceivingClient client = new ReceivingClient(address, this.scheduler, 30, EOM);
|
||||
List<String> messages = new ArrayList<>();
|
||||
client.setMessageHandler((fromAddress, message, partialMessage) -> messages.add(new String(message, StandardCharsets.UTF_8)));
|
||||
client.start();
|
||||
assertTrue(client.isRunning());
|
||||
|
||||
this.sendToSocket(address, msgToSend);
|
||||
Thread.sleep(200);
|
||||
assertEquals(2, messages.size());
|
||||
assertEquals("Hello from validateMessageSend", messages.get(0));
|
||||
assertEquals("BeforeAfterClientConnectDiscon", messages.get(1));
|
||||
messages.clear();
|
||||
|
||||
client.stop();
|
||||
this.sendToSocket(address, msgToSend);
|
||||
Thread.sleep(200);
|
||||
assertEquals(0, messages.size());
|
||||
|
||||
this.sendToSocket(address, msgToSend);
|
||||
|
||||
server.stop();
|
||||
assertFalse(client.isRunning());
|
||||
assertFalse(server.isRunning());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void validateReconnectDuringReceive() throws Exception {
|
||||
String msgToSend = "Hello from validateReconnectDuringReceive\r";
|
||||
InetSocketAddress addressMain = new InetSocketAddress(9998);
|
||||
Server server = new Server(addressMain, 1024, EOM);
|
||||
server.start();
|
||||
|
||||
ExecutorService sendingExecutor = Executors.newSingleThreadExecutor();
|
||||
|
||||
ReceivingClient client = new ReceivingClient(addressMain, this.scheduler, 1024, EOM);
|
||||
client.setBackupAddress(addressMain);
|
||||
client.setReconnectAttempts(10);
|
||||
client.setDelayMillisBeforeReconnect(1000);
|
||||
client.setMessageHandler((fromAddress, message, partialMessage) -> System.out.println(new String(message)));
|
||||
client.start();
|
||||
assertTrue(client.isRunning());
|
||||
|
||||
sendingExecutor.execute(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
for (int i = 0; i < 10; i++) {
|
||||
try {
|
||||
sendToSocket(addressMain, msgToSend);
|
||||
Thread.sleep(100);
|
||||
} catch (Exception e) {
|
||||
try {
|
||||
Thread.sleep(1000);
|
||||
} catch (Exception ex) {
|
||||
// ignore
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
Thread.sleep(500);
|
||||
server.stop();
|
||||
|
||||
Thread.sleep(500);
|
||||
|
||||
server.start();
|
||||
Thread.sleep(1000);
|
||||
|
||||
client.stop();
|
||||
server.stop();
|
||||
|
||||
assertFalse(client.isRunning());
|
||||
assertFalse(server.isRunning());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void validateConnectionFailureAfterRetries() throws Exception {
|
||||
ReceivingClient client = null;
|
||||
try {
|
||||
InetSocketAddress addressMain = new InetSocketAddress(9998);
|
||||
InetSocketAddress addressSecondary = new InetSocketAddress(9999);
|
||||
|
||||
client = new ReceivingClient(addressMain, this.scheduler, 1024, EOM);
|
||||
client.setBackupAddress(addressSecondary);
|
||||
client.setReconnectAttempts(5);
|
||||
client.setDelayMillisBeforeReconnect(200);
|
||||
client.start();
|
||||
fail();
|
||||
} catch (Exception e) {
|
||||
assertTrue(e instanceof IllegalStateException);
|
||||
}
|
||||
assertFalse(client.isRunning());
|
||||
}
|
||||
|
||||
private void sendToSocket(InetSocketAddress address, String message) throws Exception {
|
||||
Socket socket = new Socket(address.getAddress(), address.getPort());
|
||||
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
|
||||
out.write(message);
|
||||
out.flush();
|
||||
socket.close();
|
||||
}
|
||||
}
|
|
@ -0,0 +1,91 @@
|
|||
/*
|
||||
* Copyright 2014 the original author or authors.
|
||||
*
|
||||
* 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.apache.nifi.processors.gettcp;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.channels.SelectionKey;
|
||||
import java.nio.channels.ServerSocketChannel;
|
||||
import java.nio.channels.SocketChannel;
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
public class Server extends AbstractSocketHandler {
|
||||
|
||||
public static void main(String[] args) throws Exception {
|
||||
InetSocketAddress address = new InetSocketAddress(9999);
|
||||
Server server = new Server(address, 4096, (byte) '\r');
|
||||
server.start();
|
||||
System.in.read();
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param address
|
||||
* @param readingBufferSize
|
||||
*/
|
||||
public Server(InetSocketAddress address, int readingBufferSize, byte endOfMessageByte) {
|
||||
super(address, readingBufferSize, endOfMessageByte);
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
@Override
|
||||
InetSocketAddress connect() throws IOException {
|
||||
this.rootChannel = ServerSocketChannel.open();
|
||||
ServerSocketChannel channel = (ServerSocketChannel) rootChannel;
|
||||
channel.configureBlocking(false);
|
||||
channel.socket().bind(this.address);
|
||||
channel.register(this.selector, SelectionKey.OP_ACCEPT);
|
||||
return this.address;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
@Override
|
||||
void doAccept(SelectionKey selectionKey) throws IOException {
|
||||
ServerSocketChannel serverChannel = (ServerSocketChannel) selectionKey.channel();
|
||||
SocketChannel channel = serverChannel.accept();
|
||||
if (logger.isInfoEnabled()) {
|
||||
logger.info("Accepted connection from: " + channel.socket());
|
||||
}
|
||||
channel.configureBlocking(false);
|
||||
channel.register(this.selector, SelectionKey.OP_READ);
|
||||
}
|
||||
|
||||
/**
|
||||
* Unlike the client side the read on the server will happen using receiving
|
||||
* thread.
|
||||
*/
|
||||
@Override
|
||||
void processData(SelectionKey selectionKey, ByteBuffer readBuffer) throws IOException {
|
||||
logger.info("Server received message of " + readBuffer.limit() + " bytes in size and will delegate to all registered clients.");
|
||||
for (SelectionKey key : selector.keys()) {
|
||||
if (key.isValid() && key.channel() instanceof SocketChannel && !selectionKey.equals(key)) {
|
||||
if (logger.isDebugEnabled()) {
|
||||
logger.debug("Distributing incoming message to " + key.channel());
|
||||
}
|
||||
SocketChannel sch = (SocketChannel) key.channel();
|
||||
sch.write(readBuffer);
|
||||
readBuffer.rewind();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
|
@ -0,0 +1,118 @@
|
|||
/*
|
||||
* 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.gettcp;
|
||||
|
||||
import java.io.PrintWriter;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.net.Socket;
|
||||
|
||||
import org.apache.nifi.util.TestRunner;
|
||||
import org.apache.nifi.util.TestRunners;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
|
||||
public final class TestGetTCP {
|
||||
private TestRunner testRunner;
|
||||
private GetTCP processor;
|
||||
|
||||
@Before
|
||||
public void setup() {
|
||||
processor = new GetTCP();
|
||||
testRunner = TestRunners.newTestRunner(processor);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testSelectPropertiesValidation() {
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "!@;;*blah:9999");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:9999");
|
||||
testRunner.assertValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:-1");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, ",");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, ",localhost:9999");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "999,localhost:123");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:abc_port");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:9999;localhost:1234");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:9999,localhost:1234");
|
||||
testRunner.assertValid();
|
||||
testRunner.setProperty(GetTCP.END_OF_MESSAGE_BYTE, "354");
|
||||
testRunner.assertNotValid();
|
||||
testRunner.setProperty(GetTCP.END_OF_MESSAGE_BYTE, "13");
|
||||
testRunner.assertValid();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testDynamicProperty() {
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:9999,localhost:1234");
|
||||
testRunner.setProperty("MyCustomProperty", "abc");
|
||||
testRunner.assertValid();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testSuccessInteraction() throws Exception {
|
||||
Server server = setupTCPServer(9999);
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:" + 9999);
|
||||
testRunner.run(1000, false);
|
||||
this.sendToSocket(new InetSocketAddress(9999), "Hello\r");
|
||||
Thread.sleep(200);
|
||||
testRunner.assertAllFlowFilesTransferred(GetTCP.REL_SUCCESS, 1);
|
||||
testRunner.clearTransferState();
|
||||
testRunner.shutdown();
|
||||
server.stop();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testPartialInteraction() throws Exception {
|
||||
Server server = setupTCPServer(9999);
|
||||
testRunner.setProperty(GetTCP.ENDPOINT_LIST, "localhost:" + 9999);
|
||||
testRunner.setProperty(GetTCP.RECEIVE_BUFFER_SIZE, "2");
|
||||
testRunner.run(1000, false);
|
||||
this.sendToSocket(new InetSocketAddress(9999), "Hello\r");
|
||||
Thread.sleep(200);
|
||||
testRunner.assertAllFlowFilesTransferred(GetTCP.REL_PARTIAL, 3);
|
||||
testRunner.clearTransferState();
|
||||
|
||||
this.sendToSocket(new InetSocketAddress(9999), "H\r");
|
||||
Thread.sleep(200);
|
||||
testRunner.assertAllFlowFilesTransferred(GetTCP.REL_SUCCESS, 1);
|
||||
testRunner.clearTransferState();
|
||||
testRunner.shutdown();
|
||||
server.stop();
|
||||
}
|
||||
|
||||
private Server setupTCPServer(int port) {
|
||||
InetSocketAddress address = new InetSocketAddress(port);
|
||||
Server server = new Server(address, 1024, (byte) '\r');
|
||||
server.start();
|
||||
return server;
|
||||
}
|
||||
|
||||
private void sendToSocket(InetSocketAddress address, String message) throws Exception {
|
||||
Socket socket = new Socket(address.getAddress(), address.getPort());
|
||||
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
|
||||
out.write(message);
|
||||
out.flush();
|
||||
socket.close();
|
||||
}
|
||||
}
|
|
@ -0,0 +1,8 @@
|
|||
log4j.rootCategory=DEBUG, stdout
|
||||
|
||||
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
|
||||
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
|
||||
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %t %c{2}:%L - %m%n
|
||||
|
||||
#log4j.category.com.hortonworks.minicluster=INFO
|
||||
log4j.category.org.apache.tez.runtime=WARN
|
|
@ -0,0 +1,35 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!--
|
||||
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.
|
||||
-->
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<parent>
|
||||
<groupId>org.apache.nifi</groupId>
|
||||
<artifactId>nifi-nar-bundles</artifactId>
|
||||
<version>1.2.0-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
|
||||
<artifactId>nifi-tcp-bundle</artifactId>
|
||||
<version>1.2.0-SNAPSHOT</version>
|
||||
<packaging>pom</packaging>
|
||||
|
||||
<modules>
|
||||
<module>nifi-tcp-processors</module>
|
||||
<module>nifi-tcp-nar</module>
|
||||
</modules>
|
||||
|
||||
</project>
|
|
@ -72,6 +72,7 @@
|
|||
<module>nifi-email-bundle</module>
|
||||
<module>nifi-ranger-bundle</module>
|
||||
<module>nifi-websocket-bundle</module>
|
||||
<module>nifi-tcp-bundle</module>
|
||||
</modules>
|
||||
|
||||
<dependencyManagement>
|
||||
|
|
Loading…
Reference in New Issue