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/*
* Copyright 2011-2016 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 io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.log4j;
import java.io.UnsupportedEncodingException;
import java.util.Calendar;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.Timer;
import java.util.TimerTask;
import java.util.UUID;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.atomic.AtomicInteger;
import io.bitsensor.plugins.shaded.org.apache.log4j.AppenderSkeleton;
import io.bitsensor.plugins.shaded.org.apache.log4j.Layout;
import io.bitsensor.plugins.shaded.org.apache.log4j.Level;
import io.bitsensor.plugins.shaded.org.apache.log4j.PatternLayout;
import io.bitsensor.plugins.shaded.org.apache.log4j.spi.ErrorCode;
import io.bitsensor.plugins.shaded.org.apache.log4j.spi.LocationInfo;
import io.bitsensor.plugins.shaded.org.apache.log4j.spi.LoggingEvent;
import io.bitsensor.plugins.shaded.org.apache.log4j.spi.ThrowableInformation;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.AmqpException;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.DirectExchange;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.Exchange;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.FanoutExchange;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.HeadersExchange;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.Message;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.MessageDeliveryMode;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.MessageProperties;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.TopicExchange;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.connection.AbstractConnectionFactory;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.core.DeclareExchangeConnectionListener;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.core.RabbitAdmin;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.core.RabbitTemplate;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.support.LogAppenderUtils;
/**
* A Log4J appender that publishes logging events to an AMQP Exchange.
*
* A fully-configured AmqpAppender, with every option set to their defaults, would look like this:
*
* log4j.appender.amqp=io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.log4j.AmqpAppender
* #-------------------------------
* ## Connection settings
* #-------------------------------
* log4j.appender.amqp.host=localhost
* log4j.appender.amqp.port=5672
* #log4j.appender.amqp.addresses=foo:5672,bar:5673 - overrides host and port if present
* log4j.appender.amqp.username=guest
* log4j.appender.amqp.password=guest
* log4j.appender.amqp.virtualHost=/
* #-------------------------------
* ## Exchange name and type
* #-------------------------------
* log4j.appender.amqp.exchangeName=logs
* log4j.appender.amqp.exchangeType=topic
* #-------------------------------
* ## Log4J-format pattern to use to create a routing key.
* ## The application id is available as %X{applicationId}.
* #-------------------------------
* log4j.appender.amqp.routingKeyPattern=%c.%p
* #-------------------------------
* ## Whether or not to declare this configured exchange
* #-------------------------------
* log4j.appender.amqp.declareExchange=false
* #-------------------------------
* ## Flags to use when declaring the exchange
* #-------------------------------
* log4j.appender.amqp.durable=true
* log4j.appender.amqp.autoDelete=false
* #-------------------------------
* ## Message properties
* #-------------------------------
* log4j.appender.amqp.contentType=text/plain
* #log4j.appender.amqp.contentEncoding=null
* log4j.appender.amqp.generateId=false
* #log4j.appender.amqp.charset=null
* log4j.appender.amqp.deliveryMode=PERSISTENT
* #-------------------------------
* ## Sender configuration
* #-------------------------------
* log4j.appender.amqp.senderPoolSize=2
* log4j.appender.amqp.maxSenderRetries=30
* #log4j.appender.amqp.applicationId=null
* #-------------------------------
* ## Standard Log4J stuff
* #-------------------------------
* log4j.appender.amqp.layout=io.bitsensor.plugins.shaded.org.apache.log4j.PatternLayout
* log4j.appender.amqp.layout.ConversionPattern=%d %p %t [%c] - <%m>%n
*
*
* @deprecated in favor of Apache Log4j 2
* (following Apache's EOL declaration for log4j 1.x)
*
* @author Jon Brisbin
* @author Gary Russell
* @author Artem Bilan
*/
@Deprecated
public class AmqpAppender extends AppenderSkeleton {
/**
* Key name for the application id (if there is one set via the appender config) in the message properties.
*/
public static final String APPLICATION_ID = "applicationId";
/**
* Key name for the logger category name in the message properties
*/
public static final String CATEGORY_NAME = "categoryName";
/**
* Key name for the logger level name in the message properties
*/
public static final String CATEGORY_LEVEL = "level";
/**
* Name of the exchange to publish log events to.
*/
private String exchangeName = "logs";
/**
* Type of the exchange to publish log events to.
*/
private String exchangeType = "topic";
/**
* Log4J pattern format to use to generate a routing key.
*/
private String routingKeyPattern = "%c.%p";
/**
* Log4J Layout to use to generate routing key.
*/
private Layout routingKeyLayout;
/**
* Used to synchronize access to pattern layouts.
*/
private final Object layoutMutex = new Object();
/**
* Configuration arbitrary application ID.
*/
private String applicationId = null;
/**
* Where LoggingEvents are queued to send.
*/
private final LinkedBlockingQueue events = new LinkedBlockingQueue();
/**
* The pool of senders.
*/
private ExecutorService senderPool = null;
/**
* How many senders to use at once. Use more senders if you have lots of log output going through this appender.
*/
private int senderPoolSize = 2;
/**
* How many times to retry sending a message if the broker is unavailable or there is some other error.
*/
private int maxSenderRetries = 30;
/**
* Retries are delayed like: N ^ log(N), where N is the retry number.
*/
private final Timer retryTimer = new Timer("log-event-retry-delay", true);
/**
* RabbitMQ ConnectionFactory.
*/
private AbstractConnectionFactory connectionFactory;
/**
* Additional client connection properties added to the rabbit connection, with the form
* {@code key:value[,key:value]...}.
*/
private String clientConnectionProperties;
/**
* A comma-delimited list of broker addresses: host:port[,host:port]*.
* @since 1.5.6
*/
private String addresses;
/**
* RabbitMQ host to connect to.
*/
private String host = "localhost";
/**
* RabbitMQ virtual host to connect to.
*/
private String virtualHost = "/";
/**
* RabbitMQ port to connect to.
*/
private int port = 5672;
/**
* RabbitMQ user to connect as.
*/
private String username = "guest";
/**
* RabbitMQ password for this user.
*/
private String password = "guest";
/**
* Default content-type of log messages.
*/
private String contentType = "text/plain";
/**
* Default content-encoding of log messages.
*/
private String contentEncoding = null;
/**
* Whether or not to try and declare the configured exchange when this appender starts.
*/
private boolean declareExchange = false;
/**
* charset to use when converting String to byte[], default null (system default charset used).
* If the charset is unsupported on the current platform, we fall back to using
* the system charset.
*/
private String charset;
private boolean durable = true;
private MessageDeliveryMode deliveryMode = MessageDeliveryMode.PERSISTENT;
private boolean autoDelete = false;
/**
* Used to determine whether {@link MessageProperties#setMessageId(String)} is set.
*/
private boolean generateId = false;
public String getHost() {
return this.host;
}
public void setHost(String host) {
this.host = host;
}
public int getPort() {
return this.port;
}
public void setPort(int port) {
this.port = port;
}
public void setAddresses(String addresses) {
this.addresses = addresses;
}
public String getAddresses() {
return this.addresses;
}
public String getVirtualHost() {
return this.virtualHost;
}
public void setVirtualHost(String virtualHost) {
this.virtualHost = virtualHost;
}
public String getUsername() {
return this.username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return this.password;
}
public void setPassword(String password) {
this.password = password;
}
public String getExchangeName() {
return this.exchangeName;
}
public void setExchangeName(String exchangeName) {
this.exchangeName = exchangeName;
}
public String getExchangeType() {
return this.exchangeType;
}
public void setExchangeType(String exchangeType) {
this.exchangeType = exchangeType;
}
public String getRoutingKeyPattern() {
return this.routingKeyPattern;
}
public void setRoutingKeyPattern(String routingKeyPattern) {
this.routingKeyPattern = routingKeyPattern;
}
public boolean isDeclareExchange() {
return this.declareExchange;
}
public void setDeclareExchange(boolean declareExchange) {
this.declareExchange = declareExchange;
}
public String getContentType() {
return this.contentType;
}
public void setContentType(String contentType) {
this.contentType = contentType;
}
public String getContentEncoding() {
return this.contentEncoding;
}
public void setContentEncoding(String contentEncoding) {
this.contentEncoding = contentEncoding;
}
public String getApplicationId() {
return this.applicationId;
}
public void setApplicationId(String applicationId) {
this.applicationId = applicationId;
}
public int getSenderPoolSize() {
return this.senderPoolSize;
}
public void setSenderPoolSize(int senderPoolSize) {
this.senderPoolSize = senderPoolSize;
}
public int getMaxSenderRetries() {
return this.maxSenderRetries;
}
public void setMaxSenderRetries(int maxSenderRetries) {
this.maxSenderRetries = maxSenderRetries;
}
public boolean isDurable() {
return this.durable;
}
public void setDurable(boolean durable) {
this.durable = durable;
}
public String getDeliveryMode() {
return this.deliveryMode.toString();
}
public void setDeliveryMode(String deliveryMode) {
this.deliveryMode = MessageDeliveryMode.valueOf(deliveryMode);
}
public boolean isAutoDelete() {
return this.autoDelete;
}
public void setAutoDelete(boolean autoDelete) {
this.autoDelete = autoDelete;
}
public boolean isGenerateId() {
return this.generateId;
}
public void setGenerateId(boolean generateId) {
this.generateId = generateId;
}
public String getCharset() {
return this.charset;
}
public void setCharset(String charset) {
this.charset = charset;
}
/**
* Set additional client connection properties to be added to the rabbit connection,
* with the form {@code key:value[,key:value]...}.
* @param clientConnectionProperties the properties.
* @since 1.5.6
*/
public void setClientConnectionProperties(String clientConnectionProperties) {
this.clientConnectionProperties = clientConnectionProperties;
}
@Override
public void activateOptions() {
this.routingKeyLayout = new PatternLayout(this.routingKeyPattern
.replaceAll("%X\\{applicationId\\}", this.applicationId));
this.connectionFactory = new CachingConnectionFactory();
this.connectionFactory.setHost(this.host);
this.connectionFactory.setPort(this.port);
if (this.addresses != null) {
this.connectionFactory.setAddresses(this.addresses);
}
this.connectionFactory.setUsername(this.username);
this.connectionFactory.setPassword(this.password);
this.connectionFactory.setVirtualHost(this.virtualHost);
LogAppenderUtils.updateClientConnectionProperties(this.connectionFactory, this.clientConnectionProperties);
updateConnectionClientProperties(this.connectionFactory.getRabbitConnectionFactory().getClientProperties());
setUpExchangeDeclaration();
startSenders();
}
/**
* Subclasses can override this method to add properties to the connection client
* properties.
* @param clientProperties the client properties.
* @since 1.5.6
*/
protected void updateConnectionClientProperties(Map clientProperties) {
}
/**
* @deprecated - use {@link #setUpExchangeDeclaration()}
*/
@Deprecated
protected void maybeDeclareExchange() {
setUpExchangeDeclaration();
}
protected void setUpExchangeDeclaration() {
RabbitAdmin admin = new RabbitAdmin(this.connectionFactory);
if (this.declareExchange) {
Exchange x;
if ("topic".equals(this.exchangeType)) {
x = new TopicExchange(this.exchangeName, this.durable, this.autoDelete);
}
else if ("direct".equals(this.exchangeType)) {
x = new DirectExchange(this.exchangeName, this.durable, this.autoDelete);
}
else if ("fanout".equals(this.exchangeType)) {
x = new FanoutExchange(this.exchangeName, this.durable, this.autoDelete);
}
else if ("headers".equals(this.exchangeType)) {
x = new HeadersExchange(this.exchangeType, this.durable, this.autoDelete);
}
else {
x = new TopicExchange(this.exchangeName, this.durable, this.autoDelete);
}
this.connectionFactory.addConnectionListener(new DeclareExchangeConnectionListener(x, admin));
}
}
/**
* Submit the required number of senders into the pool.
*/
protected void startSenders() {
this.senderPool = Executors.newCachedThreadPool();
for (int i = 0; i < this.senderPoolSize; i++) {
this.senderPool.submit(new EventSender());
}
}
@Override
public void append(LoggingEvent event) {
this.events.add(new Event(event, event.getProperties()));
}
@Override
public void close() {
if (null != this.senderPool) {
this.senderPool.shutdownNow();
this.senderPool = null;
}
if (null != this.connectionFactory) {
this.connectionFactory.destroy();
}
this.retryTimer.cancel();
}
@Override
public boolean requiresLayout() {
return true;
}
/**
* Subclasses may modify the final message before sending.
* @param message The message.
* @param event The event.
* @return The modified message.
* @since 1.4
*/
public Message postProcessMessageBeforeSend(Message message, Event event) {
return message;
}
/**
* Helper class to actually send LoggingEvents asynchronously.
*/
protected class EventSender implements Runnable {
@Override
public void run() {
try {
RabbitTemplate rabbitTemplate = new RabbitTemplate(AmqpAppender.this.connectionFactory);
while (true) {
final Event event = AmqpAppender.this.events.take();
LoggingEvent logEvent = event.getEvent();
String name = logEvent.getLogger().getName();
Level level = logEvent.getLevel();
MessageProperties amqpProps = new MessageProperties();
amqpProps.setDeliveryMode(AmqpAppender.this.deliveryMode);
amqpProps.setContentType(AmqpAppender.this.contentType);
if (null != AmqpAppender.this.contentEncoding) {
amqpProps.setContentEncoding(AmqpAppender.this.contentEncoding);
}
amqpProps.setHeader(CATEGORY_NAME, name);
amqpProps.setHeader(CATEGORY_LEVEL, level.toString());
if (AmqpAppender.this.generateId) {
amqpProps.setMessageId(UUID.randomUUID().toString());
}
// Set applicationId, if we're using one
if (null != AmqpAppender.this.applicationId) {
amqpProps.setAppId(AmqpAppender.this.applicationId);
}
// Set timestamp
Calendar tstamp = Calendar.getInstance();
tstamp.setTimeInMillis(logEvent.getTimeStamp());
amqpProps.setTimestamp(tstamp.getTime());
// Copy properties in from MDC
@SuppressWarnings("rawtypes")
Map props = event.getProperties();
@SuppressWarnings("unchecked")
Set> entrySet = props.entrySet();
for (Entry entry : entrySet) {
amqpProps.setHeader(entry.getKey().toString(), entry.getValue());
}
LocationInfo locInfo = logEvent.getLocationInformation();
if (!"?".equals(locInfo.getClassName())) {
amqpProps.setHeader(
"location",
String.format("%s.%s()[%s]", locInfo.getClassName(), locInfo.getMethodName(),
locInfo.getLineNumber()));
}
StringBuilder msgBody;
String routingKey;
synchronized (AmqpAppender.this.layoutMutex) {
msgBody = new StringBuilder(layout.format(logEvent));
routingKey = AmqpAppender.this.routingKeyLayout.format(logEvent);
}
if (layout.ignoresThrowable() && null != logEvent.getThrowableInformation()) {
ThrowableInformation tinfo = logEvent.getThrowableInformation();
for (String line : tinfo.getThrowableStrRep()) {
msgBody.append(String.format("%s%n", line));
}
}
// Send a message
try {
Message message = null;
if (AmqpAppender.this.charset != null) {
try {
message = new Message(msgBody.toString().getBytes(AmqpAppender.this.charset), amqpProps);
}
catch (UnsupportedEncodingException e) { /* fall back to default */ }
}
if (message == null) {
message = new Message(msgBody.toString().getBytes(), amqpProps); //NOSONAR (default charset)
}
message = postProcessMessageBeforeSend(message, event);
rabbitTemplate.send(AmqpAppender.this.exchangeName, routingKey, message);
}
catch (AmqpException e) {
int retries = event.incrementRetries();
if (retries < AmqpAppender.this.maxSenderRetries) {
// Schedule a retry based on the number of times I've tried to re-send this
AmqpAppender.this.retryTimer.schedule(new TimerTask() {
@Override
public void run() {
AmqpAppender.this.events.add(event);
}
}, (long) (Math.pow(retries, Math.log(retries)) * 1000));
}
else {
errorHandler.error(
"Could not send log message " + logEvent.getRenderedMessage() + " after "
+ AmqpAppender.this.maxSenderRetries + " retries",
e, ErrorCode.WRITE_FAILURE, logEvent);
}
}
}
}
catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
/**
* Small helper class to encapsulate a LoggingEvent, its MDC properties, and the number of retries.
*/
@SuppressWarnings("rawtypes")
protected static class Event {
private final LoggingEvent event;
private final Map properties;
private final AtomicInteger retries = new AtomicInteger(0);
public Event(LoggingEvent event, Map properties) {
this.event = event;
this.properties = properties;
}
public LoggingEvent getEvent() {
return this.event;
}
public Map getProperties() {
return this.properties;
}
public int incrementRetries() {
return this.retries.incrementAndGet();
}
}
}