Chapter 206. Lumberjack Component

Available as of Camel version 2.18

The Lumberjack component retrieves logs sent over the network using the Lumberjack protocol, from Filebeat for instance. The network communication can be secured with SSL.

This component only supports consumer endpoints.

Maven users will need to add the following dependency to their pom.xml for this component:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-lumberjack</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

206.1. URI format

lumberjack:host
lumberjack:host:port

You can append query options to the URI in the following format, ?option=value&option=value&…​

206.2. Options

The Lumberjack component supports 3 options which are listed below.

NameDescriptionDefaultType

sslContextParameters (security)

Sets the default SSL configuration to use for all the endpoints. You can also configure it directly at the endpoint level.

 

SSLContextParameters

useGlobalSslContext Parameters (security)

Enable usage of global SSL context parameters.

false

boolean

resolveProperty Placeholders (advanced)

Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders.

true

boolean

The Lumberjack endpoint is configured using URI syntax:

lumberjack:host:port

with the following path and query parameters:

206.2.1. Path Parameters (2 parameters):

NameDescriptionDefaultType

host

Required Network interface on which to listen for Lumberjack

 

String

port

Network port on which to listen for Lumberjack

5044

int

206.2.2. Query Parameters (5 parameters):

NameDescriptionDefaultType

bridgeErrorHandler (consumer)

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

false

boolean

sslContextParameters (consumer)

SSL configuration

 

SSLContextParameters

exceptionHandler (consumer)

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this options is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.

 

ExceptionHandler

exchangePattern (consumer)

Sets the exchange pattern when the consumer creates an exchange.

 

ExchangePattern

synchronous (advanced)

Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported).

false

boolean

206.3. Result

The result body is a Map<String, Object> object.

206.4. Lumberjack Usage Samples

206.4.1. Example 1: Streaming the log messages

RouteBuilder builder = new RouteBuilder() {
    public void configure() {
       from("lumberjack:0.0.0.0").                  // Listen on all network interfaces using the default port
           setBody(simple("${body[message]}")).     // Select only the log message
           to("stream:out");                        // Write it into the output stream
    }
};