Splunk Component

Table of Contents

URI format
Producer Endpoints:
Consumer Endpoints:
URI Options
Message body
Use Cases
Other comments
See Also

Available as of Camel 2.13

The Splunk component provides access to Splunk using the Splunk provided client api, and it enables you to publish and search for events in Splunk.

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

 <dependency>
        <groupId>org.apache.camel</groupId>
        <artifactId>camel-splunk</artifactId>
        <version>${camel-version}</version>
    </dependency>

URI format

  splunk://[endpoint]?[options]

Producer Endpoints:

Endpoint	Description
stream	Streams data to a named index or the default if not specified. When using stream mode be aware of that Splunk has some internal buffer (about 1MB or so) before events gets to the index. If you need realtime, better use submit or tcp mode.
submit	submit mode. Uses Splunk rest api to publish events to a named index or the default if not specified.
tcp	tcp mode. Streams data to a tcp port, and requires a open receiver port in Splunk.

When publishing events the message body should contain a SplunkEvent. See comment under message body.

Example

      from("direct:start").convertBodyTo(SplunkEvent.class)
          .to("splunk://submit?username=user&password=123&index=myindex&sourceType=someSourceType&source=mySource")...

In this example a converter is required to convert to a SplunkEvent class.

Consumer Endpoints:

Endpoint	Description
normal	Performs normal search and requires a search query in the search option.
savedsearch	Performs search based on a search query saved in splunk and requires the name of the query in the savedSearch option.

Example

      from("splunk://normal?delay=5s&username=user&password=123&initEarliestTime=-10s&search=search index=myindex sourcetype=someSourcetype")
          .to("direct:search-result");

camel-splunk creates a route exchange per search result with a SplunkEvent in the body.

URI Options

The Splunk component supports 1 options which are listed below.

{% raw %}

Name	Java Type	Description
splunkConfigurationFactory	`SplunkConfigurationFactory`	To use the SplunkConfigurationFactory

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The Splunk component supports 43 endpoint options which are listed below:

{% raw %}

Name	Group	Default	Java Type	Description
name	common		`String`	Required Name has no purpose
app	common		`String`	Splunk app
connectionTimeout	common	`5000`	`int`	Timeout in MS when connecting to Splunk server
host	common	`localhost`	`String`	Splunk host.
owner	common		`String`	Splunk owner
password	common		`String`	Password for Splunk
port	common	`8089`	`int`	Splunk port
scheme	common	`https`	`String`	Splunk scheme
sslProtocol	common	`TLSv1.2`	`SSLSecurityProtocol`	Set the ssl protocol to use
username	common		`String`	Username for Splunk
useSunHttpsHandler	common	`false`	`boolean`	Use sun.net.www.protocol.https.Handler Https handler to establish the Splunk Connection. Can be useful when running in application servers to avoid app. server https handling.
bridgeErrorHandler	consumer	`false`	`boolean`	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/ERROR level and ignored.
count	consumer		`int`	A number that indicates the maximum number of entities to return.
earliestTime	consumer		`String`	Earliest time of the search time window.
initEarliestTime	consumer		`String`	Initial start offset of the first search
latestTime	consumer		`String`	Latest time of the search time window.
savedSearch	consumer		`String`	The name of the query saved in Splunk to run
search	consumer		`String`	The Splunk query to run
sendEmptyMessageWhenIdle	consumer	`false`	`boolean`	If the polling consumer did not poll any files you can enable this option to send an empty message (no body) instead.
streaming	consumer		`Boolean`	Sets streaming mode. Streaming mode sends exchanges as they are received rather than in a batch.
exceptionHandler	consumer (advanced)		`ExceptionHandler`	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/ERROR level and ignored.
exchangePattern	consumer (advanced)		`ExchangePattern`	Sets the exchange pattern when the consumer creates an exchange.
pollStrategy	consumer (advanced)		`PollingConsumerPollStrategy`	A pluggable org.apache.camel.PollingConsumerPollingStrategy allowing you to provide your custom implementation to control error handling usually occurred during the poll operation before an Exchange have been created and being routed in Camel.
eventHost	producer		`String`	Override the default Splunk event host field
index	producer		`String`	Splunk index to write to
raw	producer	`false`	`boolean`	Should the payload be inserted raw
source	producer		`String`	Splunk source argument
sourceType	producer		`String`	Splunk sourcetype argument
tcpReceiverPort	producer		`int`	Splunk tcp receiver port
synchronous	advanced	`false`	`boolean`	Sets whether synchronous processing should be strictly used or Camel is allowed to use asynchronous processing (if supported).
backoffErrorThreshold	scheduler		`int`	The number of subsequent error polls (failed due some error) that should happen before the backoffMultipler should kick-in.
backoffIdleThreshold	scheduler		`int`	The number of subsequent idle polls that should happen before the backoffMultipler should kick-in.
backoffMultiplier	scheduler		`int`	To let the scheduled polling consumer backoff if there has been a number of subsequent idles/errors in a row. The multiplier is then the number of polls that will be skipped before the next actual attempt is happening again. When this option is in use then backoffIdleThreshold and/or backoffErrorThreshold must also be configured.
delay	scheduler	`500`	`long`	Milliseconds before the next poll. You can also specify time values using units such as 60s (60 seconds) 5m30s (5 minutes and 30 seconds) and 1h (1 hour).
greedy	scheduler	`false`	`boolean`	If greedy is enabled then the ScheduledPollConsumer will run immediately again if the previous run polled 1 or more messages.
initialDelay	scheduler	`1000`	`long`	Milliseconds before the first poll starts. You can also specify time values using units such as 60s (60 seconds) 5m30s (5 minutes and 30 seconds) and 1h (1 hour).
runLoggingLevel	scheduler	`TRACE`	`LoggingLevel`	The consumer logs a start/complete log line when it polls. This option allows you to configure the logging level for that.
scheduledExecutorService	scheduler		`ScheduledExecutorService`	Allows for configuring a custom/shared thread pool to use for the consumer. By default each consumer has its own single threaded thread pool.
scheduler	scheduler	`none`	`ScheduledPollConsumerScheduler`	To use a cron scheduler from either camel-spring or camel-quartz2 component
schedulerProperties	scheduler		`Map`	To configure additional properties when using a custom scheduler or any of the Quartz2 Spring based scheduler.
startScheduler	scheduler	`true`	`boolean`	Whether the scheduler should be auto started.
timeUnit	scheduler	`MILLISECONDS`	`TimeUnit`	Time unit for initialDelay and delay options.
useFixedDelay	scheduler	`true`	`boolean`	Controls if fixed delay or fixed rate is used. See ScheduledExecutorService in JDK for details.

{% endraw %}

Message body

Splunk operates on data in key/value pairs. The SplunkEvent class is a placeholder for such data, and should be in the message body for the producer. Likewise it will be returned in the body per search result for the consumer.

As of Camel 2.16.0 you can send raw data to Splunk by setting the raw option on the producer endpoint. This is useful for eg. json/xml and other payloads where Splunk has build in support.

Use Cases

Search Twitter for tweets with music and publish events to Splunk

      from("twitter://search?type=polling&keywords=music&delay=10&consumerKey=abc&consumerSecret=def&accessToken=hij&accessTokenSecret=xxx")
          .convertBodyTo(SplunkEvent.class)
          .to("splunk://submit?username=foo&password=bar&index=camel-tweets&sourceType=twitter&source=music-tweets");

To convert a Tweet to a SplunkEvent you could use a converter like

@Converter
public class Tweet2SplunkEvent {
    @Converter
    public static SplunkEvent convertTweet(Status status) {
        SplunkEvent data = new SplunkEvent("twitter-message", null);
        //data.addPair("source", status.getSource());
        data.addPair("from_user", status.getUser().getScreenName());
        data.addPair("in_reply_to", status.getInReplyToScreenName());
        data.addPair(SplunkEvent.COMMON_START_TIME, status.getCreatedAt());
        data.addPair(SplunkEvent.COMMON_EVENT_ID, status.getId());
        data.addPair("text", status.getText());
        data.addPair("retweet_count", status.getRetweetCount());
        if (status.getPlace() != null) {
            data.addPair("place_country", status.getPlace().getCountry());
            data.addPair("place_name", status.getPlace().getName());
            data.addPair("place_street", status.getPlace().getStreetAddress());
        }
        if (status.getGeoLocation() != null) {
            data.addPair("geo_latitude", status.getGeoLocation().getLatitude());
            data.addPair("geo_longitude", status.getGeoLocation().getLongitude());
        }
        return data;
    }
}

Search Splunk for tweets

      from("splunk://normal?username=foo&password=bar&initEarliestTime=-2m&search=search index=camel-tweets sourcetype=twitter")
          .log("${body}");

Other comments

Splunk comes with a variety of options for leveraging machine generated data with prebuilt apps for analyzing and displaying this. For example the jmx app. could be used to publish jmx attributes, eg. route and jvm metrics to Splunk, and displaying this on a dashboard.