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nifi
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Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-nifi into develop

This commit is contained in:
Matt Gilman 2014-12-16 15:35:44 -05:00
parent 15d7031ebd 575cc42c72
commit c2bb1fd5ba
10 changed files with 749 additions and 124 deletions
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2
nar-bundles/framework-bundle/framework/core/src/main/java/org/apache/nifi/controller/repository/VolatileContentRepository.java
View File

@ -92,7 +92,7 @@ public class VolatileContentRepository implements ContentRepository {
public static final String MAX_SIZE_PROPERTY = "nifi.volatile.content.repository.max.size";
public static final String BLOCK_SIZE_PROPERTY = "nifi.volatile.content.repository.block.size";
private final ScheduledExecutorService executor = new FlowEngine(3, "VolatileContentRepository Workers");
private final ScheduledExecutorService executor = new FlowEngine(3, "VolatileContentRepository Workers", true);
private final ConcurrentMap<ContentClaim, ContentBlock> claimMap = new ConcurrentHashMap<>(256);
private final AtomicLong repoSize = new AtomicLong(0L);

64
nar-bundles/framework-bundle/framework/resources/src/main/resources/bin/nifi.sh
View File

@ -15,19 +15,16 @@
# See the License for the specific language governing permissions and
# limitations under the License.
#
# chkconfig: 2345 20 80
# description: Apache NiFi is a dataflow system based on the principles of Flow-Based Programming.
#
# Script structure inspired from Apache Karaf and other Apache projects with similar startup approaches
DIRNAME=`dirname "$0"`
NIFI_HOME=`cd $(dirname "$0") && cd .. && pwd`
PROGNAME=`basename "$0"`
#
#Readlink is not available on all systems. Change variable to appropriate alternative as part of OS detection
#
READLINK="readlink"
warn() {
echo "${PROGNAME}: $*"
}
@ -62,9 +59,6 @@ detectOS() {
export LDR_CNTRL=MAXDATA=0xB0000000@DSA
echo $LDR_CNTRL
fi
if $darwin; then
READLINK="greadlink"
fi
}
unlimitFD() {
@ -95,22 +89,6 @@ unlimitFD() {
fi
}
locateHome() {
if [ "x$NIFI_HOME" != "x" ]; then
warn "Ignoring predefined value for NIFI_HOME"
fi
# In POSIX shells, CDPATH may cause cd to write to stdout
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
NIFI_HOME=$(dirname $($READLINK -f $0))/../
NIFI_HOME=$($READLINK -f $NIFI_HOME)
cd $NIFI_HOME
echo "Directory changed to NIFI_HOME of '$NIFI_HOME'"
if [ ! -d "$NIFI_HOME" ]; then
die "NIFI_HOME is not valid: $NIFI_HOME"
fi
}
locateJava() {
@ -138,9 +116,6 @@ locateJava() {
fi
fi
fi
if [ "x$JAVA_HOME" = "x" ]; then
JAVA_HOME="$(dirname $(dirname $(pathCanonical "$JAVA")))"
fi
}
init() {
@ -150,13 +125,25 @@ init() {
# Unlimit the number of file descriptors if possible
unlimitFD
# Locate the NiFi home directory
locateHome
# Locate the Java VM to execute
locateJava
}
install() {
SVC_NAME=nifi
if [ "x$2" != "x" ] ; then
SVC_NAME=$2
fi
SVC_FILE=/etc/init.d/$SVC_NAME
cp $0 $SVC_FILE
sed -i s:NIFI_HOME=.*:NIFI_HOME="$NIFI_HOME": $SVC_FILE
sed -i s:PROGNAME=.*:PROGNAME=$(basename "$0"): $SVC_FILE
echo Service $SVC_NAME installed
}
run() {
BOOTSTRAP_CONF="$NIFI_HOME/conf/bootstrap.conf";
@ -172,7 +159,7 @@ run() {
echo "Bootstrap Config File: $BOOTSTRAP_CONF"
echo
exec "$JAVA" -cp "$NIFI_HOME"/lib/bootstrap/* -Xms12m -Xmx24m -Dorg.apache.nifi.bootstrap.config.file="$BOOTSTRAP_CONF" org.apache.nifi.bootstrap.RunNiFi $1
exec "$JAVA" -cp "$NIFI_HOME"/lib/bootstrap/* -Xms12m -Xmx24m -Dorg.apache.nifi.bootstrap.config.file="$BOOTSTRAP_CONF" org.apache.nifi.bootstrap.RunNiFi $@
}
main() {
@ -180,4 +167,15 @@ main() {
run "$@"
}
case "$1" in
install)
install "$@"
;;
start|stop|run|status)
main "$@"
;;
*)
echo "Usage nifi {start|stop|run|status|install}"
;;
esac

8
nar-bundles/framework-bundle/framework/resources/src/main/resources/conf/bootstrap.conf
View File

@ -13,4 +13,10 @@ java.arg.2=-Xms256m
java.arg.3=-Xmx512m
# Enable Remote Debugging
#java.arg.2=-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8000
#java.arg.debug=-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8000
# Java command to use when running NiFi
java=java
# Username to use when running NiFi. This value will be ignored on Windows.
run.as=

38
nar-bundles/framework-bundle/framework/runtime/src/main/java/org/apache/nifi/BootstrapListener.java
View File

@ -27,9 +27,11 @@ import java.net.Socket;
import java.net.SocketTimeoutException;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.UUID;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.apache.nifi.util.LimitingInputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -38,14 +40,16 @@ public class BootstrapListener {
private final NiFi nifi;
private final int bootstrapPort;
private final String secretKey;
private volatile Listener listener;
private volatile ServerSocket serverSocket;
public BootstrapListener(final NiFi nifi, final int port) {
public BootstrapListener(final NiFi nifi, final int bootstrapPort) {
this.nifi = nifi;
this.bootstrapPort = port;
this.bootstrapPort = bootstrapPort;
secretKey = UUID.randomUUID().toString();
}
public void start() throws IOException {
@ -71,7 +75,7 @@ public class BootstrapListener {
socket.setSoTimeout(60000);
final OutputStream out = socket.getOutputStream();
out.write(("PORT " + localPort + "\n").getBytes(StandardCharsets.UTF_8));
out.write(("PORT " + localPort + " " + secretKey + "\n").getBytes(StandardCharsets.UTF_8));
out.flush();
logger.debug("Awaiting response from Bootstrap...");
@ -121,6 +125,7 @@ public class BootstrapListener {
try {
final Socket socket;
try {
logger.debug("Listening for Bootstrap Requests");
socket = serverSocket.accept();
} catch (final SocketTimeoutException ste) {
if ( stopped ) {
@ -136,6 +141,9 @@ public class BootstrapListener {
throw ioe;
}
logger.debug("Received connection from Bootstrap");
socket.setSoTimeout(5000);
executor.submit(new Runnable() {
@Override
public void run() {
@ -184,27 +192,42 @@ public class BootstrapListener {
out.flush();
}
@SuppressWarnings("resource") // we don't want to close the stream, as the caller will do that
private BootstrapRequest readRequest(final InputStream in) throws IOException {
final BufferedReader reader = new BufferedReader(new InputStreamReader(in));
// We want to ensure that we don't try to read data from an InputStream directly
// by a BufferedReader because any user on the system could open a socket and send
// a multi-gigabyte file without any new lines in order to crash the NiFi instance
// (or at least cause OutOfMemoryErrors, which can wreak havoc on the running instance).
// So we will limit the Input Stream to only 4 KB, which should be plenty for any request.
final LimitingInputStream limitingIn = new LimitingInputStream(in, 4096);
final BufferedReader reader = new BufferedReader(new InputStreamReader(limitingIn));
final String line = reader.readLine();
final String[] splits = line.split(" ");
if ( splits.length < 0 ) {
throw new IOException("Received invalid command from NiFi: " + line);
throw new IOException("Received invalid request from Bootstrap: " + line);
}
final String requestType = splits[0];
final String[] args;
if ( splits.length == 1 ) {
throw new IOException("Received invalid request from Bootstrap; request did not have a secret key; request type = " + requestType);
} else if ( splits.length == 2 ) {
args = new String[0];
} else {
args = Arrays.copyOfRange(splits, 1, splits.length);
args = Arrays.copyOfRange(splits, 2, splits.length);
}
final String requestKey = splits[1];
if ( !secretKey.equals(requestKey) ) {
throw new IOException("Received invalid Secret Key for request type " + requestType);
}
try {
return new BootstrapRequest(requestType, args);
} catch (final Exception e) {
throw new IOException("Received invalid request from bootstrap; request type = " + requestType);
throw new IOException("Received invalid request from Bootstrap; request type = " + requestType);
}
}
@ -227,6 +250,7 @@ public class BootstrapListener {
return requestType;
}
@SuppressWarnings("unused")
public String[] getArgs() {
return args;
}

2
nar-bundles/framework-bundle/framework/runtime/src/main/java/org/apache/nifi/NiFi.java
View File

@ -36,7 +36,6 @@ import org.apache.nifi.nar.NarClassLoaders;
import org.apache.nifi.nar.NarUnpacker;
import org.apache.nifi.util.FileUtils;
import org.apache.nifi.util.NiFiProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.bridge.SLF4JBridgeHandler;
@ -61,7 +60,6 @@ public class NiFi {
// register the shutdown hook
Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
@Override
public void run() {
// shutdown the jetty server

107
nar-bundles/framework-bundle/framework/runtime/src/main/java/org/apache/nifi/util/LimitingInputStream.java Normal file
View File

@ -0,0 +1,107 @@
/*
* 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.util;
import java.io.IOException;
import java.io.InputStream;
public class LimitingInputStream extends InputStream {
private final InputStream in;
private final long limit;
private long bytesRead = 0;
public LimitingInputStream(final InputStream in, final long limit) {
this.in = in;
this.limit = limit;
}
@Override
public int read() throws IOException {
if (bytesRead >= limit) {
return -1;
}
final int val = in.read();
if (val > -1) {
bytesRead++;
}
return val;
}
@Override
public int read(final byte[] b) throws IOException {
if (bytesRead >= limit) {
return -1;
}
final int maxToRead = (int) Math.min(b.length, limit - bytesRead);
final int val = in.read(b, 0, maxToRead);
if (val > 0) {
bytesRead += val;
}
return val;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (bytesRead >= limit) {
return -1;
}
final int maxToRead = (int) Math.min(len, limit - bytesRead);
final int val = in.read(b, off, maxToRead);
if (val > 0) {
bytesRead += val;
}
return val;
}
@Override
public long skip(final long n) throws IOException {
final long skipped = in.skip(Math.min(n, limit - bytesRead));
bytesRead += skipped;
return skipped;
}
@Override
public int available() throws IOException {
return in.available();
}
@Override
public void close() throws IOException {
in.close();
}
@Override
public void mark(int readlimit) {
in.mark(readlimit);
}
@Override
public boolean markSupported() {
return in.markSupported();
}
@Override
public void reset() throws IOException {
in.reset();
}
}

7
nifi-bootstrap/src/main/java/org/apache/nifi/bootstrap/BootstrapCodec.java
View File

@ -27,6 +27,7 @@ import java.util.Arrays;
import org.apache.nifi.bootstrap.exception.InvalidCommandException;
public class BootstrapCodec {
private final RunNiFi runner;
private final BufferedReader reader;
@ -63,7 +64,7 @@ public class BootstrapCodec {
private void processRequest(final String cmd, final String[] args) throws InvalidCommandException, IOException {
switch (cmd) {
case "PORT": {
if ( args.length != 1 ) {
if ( args.length != 2 ) {
throw new InvalidCommandException();
}
@ -78,7 +79,9 @@ public class BootstrapCodec {
throw new InvalidCommandException("Invalid Port number; should be integer between 1 and 65535");
}
runner.setNiFiCommandControlPort(port);
final String secretKey = args[1];
runner.setNiFiCommandControlPort(port, secretKey);
writer.write("OK");
writer.newLine();
writer.flush();

18
nifi-bootstrap/src/main/java/org/apache/nifi/bootstrap/NiFiListener.java
View File

@ -17,6 +17,7 @@
package org.apache.nifi.bootstrap;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
@ -24,6 +25,8 @@ import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.apache.nifi.bootstrap.util.LimitingInputStream;
public class NiFiListener {
private ServerSocket serverSocket;
private volatile Listener listener;
@ -92,17 +95,26 @@ public class NiFiListener {
throw ioe;
}
executor.submit(new Runnable() {
@Override
public void run() {
try {
final BootstrapCodec codec = new BootstrapCodec(runner, socket.getInputStream(), socket.getOutputStream());
// we want to ensure that we don't try to read data from an InputStream directly
// by a BufferedReader because any user on the system could open a socket and send
// a multi-gigabyte file without any new lines in order to crash the Bootstrap,
// which in turn may cause the Shutdown Hook to shutdown NiFi.
// So we will limit the amount of data to read to 4 KB
final InputStream limitingIn = new LimitingInputStream(socket.getInputStream(), 4096);
final BootstrapCodec codec = new BootstrapCodec(runner, limitingIn, socket.getOutputStream());
codec.communicate();
socket.close();
} catch (final Throwable t) {
System.out.println("Failed to communicate with NiFi due to " + t);
t.printStackTrace();
} finally {
try {
socket.close();
} catch (final IOException ioe) {
}
}
}
});

468
nifi-bootstrap/src/main/java/org/apache/nifi/bootstrap/RunNiFi.java
View File

@ -26,19 +26,28 @@ import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.lang.reflect.Field;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.attribute.PosixFilePermission;
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.Properties;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.logging.ConsoleHandler;
import java.util.logging.Handler;
import java.util.logging.Level;
/**
@ -60,6 +69,8 @@ public class RunNiFi {
public static final String GRACEFUL_SHUTDOWN_PROP = "graceful.shutdown.seconds";
public static final String DEFAULT_GRACEFUL_SHUTDOWN_VALUE = "20";
public static final String RUN_AS_PROP = "run.as";
public static final int MAX_RESTART_ATTEMPTS = 5;
public static final int STARTUP_WAIT_SECONDS = 60;
@ -68,20 +79,32 @@ public class RunNiFi {
private volatile boolean autoRestartNiFi = true;
private volatile int ccPort = -1;
private volatile long nifiPid = -1L;
private final Lock lock = new ReentrantLock();
private final Condition startupCondition = lock.newCondition();
private final File bootstrapConfigFile;
public RunNiFi(final File bootstrapConfigFile) {
private final java.util.logging.Logger logger;
public RunNiFi(final File bootstrapConfigFile, final boolean verbose) {
this.bootstrapConfigFile = bootstrapConfigFile;
logger = java.util.logging.Logger.getLogger("Bootstrap");
if ( verbose ) {
logger.info("Enabling Verbose Output");
logger.setLevel(Level.FINE);
final Handler handler = new ConsoleHandler();
handler.setLevel(Level.FINE);
logger.addHandler(handler);
}
}
private static void printUsage() {
System.out.println("Usage:");
System.out.println();
System.out.println("java org.apache.nifi.bootstrap.RunNiFi <command>");
System.out.println("java org.apache.nifi.bootstrap.RunNiFi [<-verbose>] <command>");
System.out.println();
System.out.println("Valid commands include:");
System.out.println("");
@ -92,21 +115,32 @@ public class RunNiFi {
System.out.println();
}
public static void main(final String[] args) throws IOException, InterruptedException {
if ( args.length != 1 ) {
if ( args.length < 1 || args.length > 2 ) {
printUsage();
return;
}
switch (args[0].toLowerCase()) {
boolean verbose = false;
if ( args.length == 2 ) {
if ( args[0].equals("-verbose") ) {
verbose = true;
} else {
printUsage();
return;
}
}
final String cmd = args.length == 1 ? args[0] : args[1];
switch (cmd.toLowerCase()) {
case "start":
case "run":
case "stop":
case "status":
break;
default:
System.out.println("Invalid argument: " + args[0]);
System.out.println();
printUsage();
return;
}
@ -128,9 +162,9 @@ public class RunNiFi {
final File configFile = new File(configFilename);
final RunNiFi runNiFi = new RunNiFi(configFile);
final RunNiFi runNiFi = new RunNiFi(configFile, verbose);
switch (args[0].toLowerCase()) {
switch (cmd.toLowerCase()) {
case "start":
runNiFi.start(false);
break;
@ -151,51 +185,211 @@ public class RunNiFi {
final File confDir = bootstrapConfigFile.getParentFile();
final File nifiHome = confDir.getParentFile();
final File bin = new File(nifiHome, "bin");
final File statusFile = new File(bin, "nifi.port");
final File statusFile = new File(bin, "nifi.pid");
logger.fine("Status File: " + statusFile);
return statusFile;
}
private Integer getCurrentPort() throws IOException {
try {
private Properties loadProperties() throws IOException {
final Properties props = new Properties();
final File statusFile = getStatusFile();
final byte[] info = Files.readAllBytes(statusFile.toPath());
final String text = new String(info);
if ( statusFile == null || !statusFile.exists() ) {
logger.fine("No status file to load properties from");
return props;
}
final int port = Integer.parseInt(text);
try (final FileInputStream fis = new FileInputStream(getStatusFile())) {
props.load(fis);
}
logger.fine("Properties: " + props);
return props;
}
private synchronized void saveProperties(final Properties nifiProps) throws IOException {
final File statusFile = getStatusFile();
if ( statusFile.exists() && !statusFile.delete() ) {
logger.warning("Failed to delete " + statusFile);
}
if ( !statusFile.createNewFile() ) {
throw new IOException("Failed to create file " + statusFile);
}
try {
final Set<PosixFilePermission> perms = new HashSet<>();
perms.add(PosixFilePermission.OWNER_READ);
perms.add(PosixFilePermission.OWNER_WRITE);
Files.setPosixFilePermissions(statusFile.toPath(), perms);
} catch (final Exception e) {
logger.warning("Failed to set permissions so that only the owner can read status file " + statusFile + "; this may allows others to have access to the key needed to communicate with NiFi. Permissions should be changed so that only the owner can read this file");
}
try (final FileOutputStream fos = new FileOutputStream(statusFile)) {
nifiProps.store(fos, null);
fos.getFD().sync();
}
logger.fine("Saved Properties " + nifiProps + " to " + statusFile);
}
private boolean isPingSuccessful(final int port, final String secretKey) {
logger.fine("Pinging " + port);
try (final Socket socket = new Socket("localhost", port)) {
final OutputStream out = socket.getOutputStream();
out.write((PING_CMD + "\n").getBytes(StandardCharsets.UTF_8));
out.write((PING_CMD + " " + secretKey + "\n").getBytes(StandardCharsets.UTF_8));
out.flush();
logger.fine("Sent PING command");
socket.setSoTimeout(5000);
final InputStream in = socket.getInputStream();
final BufferedReader reader = new BufferedReader(new InputStreamReader(in));
final String response = reader.readLine();
if ( response.equals(PING_CMD) ) {
logger.fine("PING response: " + response);
return PING_CMD.equals(response);
} catch (final IOException ioe) {
return false;
}
}
private Integer getCurrentPort() throws IOException {
final Properties props = loadProperties();
final String portVal = props.getProperty("port");
if ( portVal == null ) {
logger.fine("No Port found in status file");
return null;
} else {
logger.fine("Port defined in status file: " + portVal);
}
final int port = Integer.parseInt(portVal);
final boolean success = isPingSuccessful(port, props.getProperty("secret.key"));
if ( success ) {
logger.fine("Successful PING on port " + port);
return port;
}
final String pid = props.getProperty("pid");
logger.fine("PID in status file is " + pid);
if ( pid != null ) {
final boolean procRunning = isProcessRunning(pid);
if ( procRunning ) {
return port;
} else {
return null;
}
}
return null;
}
private boolean isProcessRunning(final String pid) {
try {
// We use the "ps" command to check if the process is still running.
final ProcessBuilder builder = new ProcessBuilder();
builder.command("ps", "-p", pid, "--no-headers");
final Process proc = builder.start();
// Read how many lines are output by the 'ps' command
int lineCount = 0;
String line;
try (final InputStream in = proc.getInputStream();
final Reader streamReader = new InputStreamReader(in);
final BufferedReader reader = new BufferedReader(streamReader)) {
while ((line = reader.readLine()) != null) {
if ( !line.trim().isEmpty() ) {
lineCount++;
}
}
}
// If anything was output, the process is running.
final boolean running = lineCount > 0;
if ( running ) {
logger.fine("Process with PID " + pid + " is running");
} else {
logger.fine("Process with PID " + pid + " is not running");
}
return running;
} catch (final IOException ioe) {
System.out.println("Found NiFi instance info at " + statusFile + " indicating that NiFi is running and listening to port " + port + " but unable to communicate with NiFi on that port. The process may have died or may be hung.");
throw ioe;
System.err.println("Failed to determine if Process " + pid + " is running; assuming that it is not");
return false;
}
} catch (final Exception e) {
return null;
}
return null;
private Status getStatus() {
final Properties props;
try {
props = loadProperties();
} catch (final IOException ioe) {
return new Status(null, null, false, false);
}
if ( props == null ) {
return new Status(null, null, false, false);
}
final String portValue = props.getProperty("port");
final String pid = props.getProperty("pid");
final String secretKey = props.getProperty("secret.key");
if ( portValue == null && pid == null ) {
return new Status(null, null, false, false);
}
Integer port = null;
boolean pingSuccess = false;
if ( portValue != null ) {
try {
port = Integer.parseInt(portValue);
pingSuccess = isPingSuccessful(port, secretKey);
} catch (final NumberFormatException nfe) {
return new Status(null, null, false, false);
}
}
if ( pingSuccess ) {
return new Status(port, pid, true, true);
}
final boolean alive = (pid == null) ? false : isProcessRunning(pid);
return new Status(port, pid, pingSuccess, alive);
}
public void status() throws IOException {
final Integer port = getCurrentPort();
if ( port == null ) {
System.out.println("Apache NiFi does not appear to be running");
} else {
System.out.println("Apache NiFi is currently running, listening on port " + port);
}
final Status status = getStatus();
if ( status.isRespondingToPing() ) {
logger.info("Apache NiFi is currently running, listening to Bootstrap on port " + status.getPort() +
", PID=" + (status.getPid() == null ? "unknkown" : status.getPid()));
return;
}
if ( status.isProcessRunning() ) {
logger.info("Apache NiFi is running at PID " + status.getPid() + " but is not responding to ping requests");
return;
}
if ( status.getPort() == null ) {
logger.info("Apache NiFi is not running");
return;
}
if ( status.getPid() == null ) {
logger.info("Apache NiFi is not responding to Ping requests. The process may have died or may be hung");
} else {
logger.info("Apache NiFi is not running");
}
}
public void stop() throws IOException {
final Integer port = getCurrentPort();
@ -204,35 +398,112 @@ public class RunNiFi {
return;
}
final Properties nifiProps = loadProperties();
final String secretKey = nifiProps.getProperty("secret.key");
try (final Socket socket = new Socket()) {
logger.fine("Connecting to NiFi instance");
socket.setSoTimeout(60000);
socket.connect(new InetSocketAddress("localhost", port));
logger.fine("Established connection to NiFi instance.");
socket.setSoTimeout(60000);
logger.fine("Sending SHUTDOWN Command to port " + port);
final OutputStream out = socket.getOutputStream();
out.write((SHUTDOWN_CMD + "\n").getBytes(StandardCharsets.UTF_8));
out.write((SHUTDOWN_CMD + " " + secretKey + "\n").getBytes(StandardCharsets.UTF_8));
out.flush();
final InputStream in = socket.getInputStream();
final BufferedReader reader = new BufferedReader(new InputStreamReader(in));
final String response = reader.readLine();
logger.fine("Received response to SHUTDOWN command: " + response);
if ( SHUTDOWN_CMD.equals(response) ) {
System.out.println("Apache NiFi has accepted the Shutdown Command and is shutting down now");
logger.info("Apache NiFi has accepted the Shutdown Command and is shutting down now");
final String pid = nifiProps.getProperty("pid");
if ( pid != null ) {
final Properties bootstrapProperties = new Properties();
try (final FileInputStream fis = new FileInputStream(bootstrapConfigFile)) {
bootstrapProperties.load(fis);
}
String gracefulShutdown = bootstrapProperties.getProperty(GRACEFUL_SHUTDOWN_PROP, DEFAULT_GRACEFUL_SHUTDOWN_VALUE);
int gracefulShutdownSeconds;
try {
gracefulShutdownSeconds = Integer.parseInt(gracefulShutdown);
} catch (final NumberFormatException nfe) {
gracefulShutdownSeconds = Integer.parseInt(DEFAULT_GRACEFUL_SHUTDOWN_VALUE);
}
final long startWait = System.nanoTime();
while ( isProcessRunning(pid) ) {
logger.info("Waiting for Apache NiFi to finish shutting down...");
final long waitNanos = System.nanoTime() - startWait;
final long waitSeconds = TimeUnit.NANOSECONDS.toSeconds(waitNanos);
if ( waitSeconds >= gracefulShutdownSeconds && gracefulShutdownSeconds > 0 ) {
if ( isProcessRunning(pid) ) {
logger.warning("NiFi has not finished shutting down after " + gracefulShutdownSeconds + " seconds. Killing process.");
try {
killProcessTree(pid);
} catch (final IOException ioe) {
logger.severe("Failed to kill Process with PID " + pid);
}
}
break;
} else {
try {
Thread.sleep(2000L);
} catch (final InterruptedException ie) {}
}
}
logger.info("NiFi has finished shutting down.");
}
final File statusFile = getStatusFile();
if ( !statusFile.delete() ) {
System.err.println("Failed to delete status file " + statusFile + "; this file should be cleaned up manually");
logger.severe("Failed to delete status file " + statusFile + "; this file should be cleaned up manually");
}
} else {
System.err.println("When sending SHUTDOWN command to NiFi, got unexpected response " + response);
logger.severe("When sending SHUTDOWN command to NiFi, got unexpected response " + response);
}
} catch (final IOException ioe) {
System.err.println("Failed to communicate with Apache NiFi");
logger.severe("Failed to send shutdown command to port " + port + " due to " + ioe);
return;
}
}
private static List<String> getChildProcesses(final String ppid) throws IOException {
final Process proc = Runtime.getRuntime().exec(new String[] {"ps", "-o", "pid", "--no-headers", "--ppid", ppid});
final List<String> childPids = new ArrayList<>();
try (final InputStream in = proc.getInputStream();
final BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
String line;
while ((line = reader.readLine()) != null) {
childPids.add(line.trim());
}
}
return childPids;
}
private void killProcessTree(final String pid) throws IOException {
logger.fine("Killing Process Tree for PID " + pid);
final List<String> children = getChildProcesses(pid);
logger.fine("Children of PID " + pid + ": " + children);
for ( final String childPid : children ) {
killProcessTree(childPid);
}
Runtime.getRuntime().exec(new String[] {"kill", "-9", pid});
}
public static boolean isAlive(final Process process) {
try {
process.exitValue();
@ -246,7 +517,7 @@ public class RunNiFi {
public void start(final boolean monitor) throws IOException, InterruptedException {
final Integer port = getCurrentPort();
if ( port != null ) {
System.out.println("Apache NiFi is already running, listening on port " + port);
System.out.println("Apache NiFi is already running, listening to Bootstrap on port " + port);
return;
}
@ -344,7 +615,20 @@ public class RunNiFi {
final NiFiListener listener = new NiFiListener();
final int listenPort = listener.start(this);
String runAs = isWindows() ? null : props.get(RUN_AS_PROP);
if ( runAs != null ) {
runAs = runAs.trim();
if ( runAs.isEmpty() ) {
runAs = null;
}
}
final List<String> cmd = new ArrayList<>();
if ( runAs != null ) {
cmd.add("sudo");
cmd.add("-u");
cmd.add(runAs);
}
cmd.add(javaCmd);
cmd.add("-classpath");
cmd.add(classPath);
@ -361,9 +645,9 @@ public class RunNiFi {
cmdBuilder.append(s).append(" ");
}
System.out.println("Starting Apache NiFi...");
System.out.println("Working Directory: " + workingDir.getAbsolutePath());
System.out.println("Command: " + cmdBuilder.toString());
logger.info("Starting Apache NiFi...");
logger.info("Working Directory: " + workingDir.getAbsolutePath());
logger.info("Command: " + cmdBuilder.toString());
if ( monitor ) {
String gracefulShutdown = props.get(GRACEFUL_SHUTDOWN_PROP);
@ -383,6 +667,13 @@ public class RunNiFi {
}
Process process = builder.start();
Long pid = getPid(process);
if ( pid != null ) {
nifiPid = pid;
final Properties nifiProps = new Properties();
nifiProps.setProperty("pid", String.valueOf(nifiPid));
saveProperties(nifiProps);
}
ShutdownHook shutdownHook = new ShutdownHook(process, this, gracefulShutdownSeconds);
final Runtime runtime = Runtime.getRuntime();
@ -404,18 +695,26 @@ public class RunNiFi {
}
if (autoRestartNiFi) {
System.out.println("Apache NiFi appears to have died. Restarting...");
logger.warning("Apache NiFi appears to have died. Restarting...");
process = builder.start();
pid = getPid(process);
if ( pid != null ) {
nifiPid = pid;
final Properties nifiProps = new Properties();
nifiProps.setProperty("pid", String.valueOf(nifiPid));
saveProperties(nifiProps);
}
shutdownHook = new ShutdownHook(process, this, gracefulShutdownSeconds);
runtime.addShutdownHook(shutdownHook);
final boolean started = waitForStart();
if ( started ) {
System.out.println("Successfully started Apache NiFi");
logger.info("Successfully started Apache NiFi" + (pid == null ? "" : " with PID " + pid));
} else {
System.err.println("Apache NiFi does not appear to have started");
logger.severe("Apache NiFi does not appear to have started");
}
} else {
return;
@ -423,13 +722,22 @@ public class RunNiFi {
}
}
} else {
builder.start();
final Process process = builder.start();
final Long pid = getPid(process);
if ( pid != null ) {
nifiPid = pid;
final Properties nifiProps = new Properties();
nifiProps.setProperty("pid", String.valueOf(nifiPid));
saveProperties(nifiProps);
}
boolean started = waitForStart();
if ( started ) {
System.out.println("Successfully started Apache NiFi");
logger.info("Successfully started Apache NiFi" + (pid == null ? "" : " with PID " + pid));
} else {
System.err.println("Apache NiFi does not appear to have started");
logger.severe("Apache NiFi does not appear to have started");
}
listener.stop();
@ -437,6 +745,30 @@ public class RunNiFi {
}
private Long getPid(final Process process) {
try {
final Class<?> procClass = process.getClass();
final Field pidField = procClass.getDeclaredField("pid");
pidField.setAccessible(true);
final Object pidObject = pidField.get(process);
logger.fine("PID Object = " + pidObject);
if ( pidObject instanceof Number ) {
return ((Number) pidObject).longValue();
}
return null;
} catch (final IllegalAccessException | NoSuchFieldException nsfe) {
logger.fine("Could not find PID for child process due to " + nsfe);
return null;
}
}
private boolean isWindows() {
final String osName = System.getProperty("os.name");
return osName != null && osName.toLowerCase().contains("win");
}
private boolean waitForStart() {
lock.lock();
try {
@ -478,21 +810,59 @@ public class RunNiFi {
this.autoRestartNiFi = restart;
}
void setNiFiCommandControlPort(final int port) {
void setNiFiCommandControlPort(final int port, final String secretKey) {
this.ccPort = port;
final File statusFile = getStatusFile();
try (final FileOutputStream fos = new FileOutputStream(statusFile)) {
fos.write(String.valueOf(port).getBytes(StandardCharsets.UTF_8));
fos.getFD().sync();
final Properties nifiProps = new Properties();
if ( nifiPid != -1 ) {
nifiProps.setProperty("pid", String.valueOf(nifiPid));
}
nifiProps.setProperty("port", String.valueOf(ccPort));
nifiProps.setProperty("secret.key", secretKey);
try {
saveProperties(nifiProps);
} catch (final IOException ioe) {
System.err.println("Apache NiFi has started but failed to persist NiFi Port information to " + statusFile.getAbsolutePath() + " due to " + ioe);
logger.warning("Apache NiFi has started but failed to persist NiFi Port information to " + statusFile.getAbsolutePath() + " due to " + ioe);
}
System.out.println("Apache NiFi now running and listening for requests on port " + port);
logger.info("Apache NiFi now running and listening for Bootstrap requests on port " + port);
}
int getNiFiCommandControlPort() {
return this.ccPort;
}
private static class Status {
private final Integer port;
private final String pid;
private final Boolean respondingToPing;
private final Boolean processRunning;
public Status(final Integer port, final String pid, final Boolean respondingToPing, final Boolean processRunning) {
this.port = port;
this.pid = pid;
this.respondingToPing = respondingToPing;
this.processRunning = processRunning;
}
public String getPid() {
return pid;
}
public Integer getPort() {
return port;
}
public boolean isRespondingToPing() {
return Boolean.TRUE.equals(respondingToPing);
}
public boolean isProcessRunning() {
return Boolean.TRUE.equals(processRunning);
}
}
}

107
nifi-bootstrap/src/main/java/org/apache/nifi/bootstrap/util/LimitingInputStream.java Normal file
View File

@ -0,0 +1,107 @@
/*
* 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.bootstrap.util;
import java.io.IOException;
import java.io.InputStream;
public class LimitingInputStream extends InputStream {
private final InputStream in;
private final long limit;
private long bytesRead = 0;
public LimitingInputStream(final InputStream in, final long limit) {
this.in = in;
this.limit = limit;
}
@Override
public int read() throws IOException {
if (bytesRead >= limit) {
return -1;
}
final int val = in.read();
if (val > -1) {
bytesRead++;
}
return val;
}
@Override
public int read(final byte[] b) throws IOException {
if (bytesRead >= limit) {
return -1;
}
final int maxToRead = (int) Math.min(b.length, limit - bytesRead);
final int val = in.read(b, 0, maxToRead);
if (val > 0) {
bytesRead += val;
}
return val;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (bytesRead >= limit) {
return -1;
}
final int maxToRead = (int) Math.min(len, limit - bytesRead);
final int val = in.read(b, off, maxToRead);
if (val > 0) {
bytesRead += val;
}
return val;
}
@Override
public long skip(final long n) throws IOException {
final long skipped = in.skip(Math.min(n, limit - bytesRead));
bytesRead += skipped;
return skipped;
}
@Override
public int available() throws IOException {
return in.available();
}
@Override
public void close() throws IOException {
in.close();
}
@Override
public void mark(int readlimit) {
in.mark(readlimit);
}
@Override
public boolean markSupported() {
return in.markSupported();
}
@Override
public void reset() throws IOException {
in.reset();
}
}