Stomp

Since Camel 2.12

Both producer and consumer are supported

The Stomp component is used for communicating with Stomp compliant message brokers, like Apache ActiveMQ or ActiveMQ Apollo

Note: Since STOMP specification is not actively maintained, please note STOMP JMS client is not as well actively maintained. However, we hope for the community to step up to help on maintaining the STOMP JMS project in the near future.

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

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

URI format

stomp:queue:destination[?options]

Where destination is the name of the queue.

Options

The Stomp component supports 13 options, which are listed below.

Name Description Default Type

brokerURL (common)

Required The URI of the Stomp broker to connect to

tcp://localhost:61613

String

customHeaders (common)

To set custom headers

Properties

host (common)

The virtual host name

String

version (common)

The stomp version (1.1, or 1.2)

String

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

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

boolean

basicPropertyBinding (advanced)

Deprecated Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities

false

boolean

configuration (advanced)

Component configuration.

StompConfiguration

headerFilterStrategy (filter)

To use a custom org.apache.camel.spi.HeaderFilterStrategy to filter header to and from Camel message.

HeaderFilterStrategy

login (security)

The username

String

passcode (security)

The password

String

sslContextParameters (security)

To configure security using SSLContextParameters

SSLContextParameters

useGlobalSslContextParameters (security)

Enable usage of global SSL context parameters.

false

boolean

The Stomp endpoint is configured using URI syntax:

stomp:destination

with the following path and query parameters:

Path Parameters (1 parameters):

Name Description Default Type

destination

Required Name of the queue

String

Query Parameters (14 parameters):

Name Description Default Type

brokerURL (common)

Required The URI of the Stomp broker to connect to

tcp://localhost:61613

String

customHeaders (common)

To set custom headers

Properties

host (common)

The virtual host name

String

version (common)

The stomp version (1.1, or 1.2)

String

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

exceptionHandler (consumer)

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option 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. There are 3 enums and the value can be one of: InOnly, InOut, InOptionalOut

ExchangePattern

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

boolean

basicPropertyBinding (advanced)

Whether the endpoint should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities

false

boolean

headerFilterStrategy (advanced)

To use a custom HeaderFilterStrategy to filter header to and from Camel message.

HeaderFilterStrategy

synchronous (advanced)

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

false

boolean

login (security)

The username

String

passcode (security)

The password

String

sslContextParameters (security)

To configure security using SSLContextParameters

SSLContextParameters

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

Samples

Sending messages:

from("direct:foo").to("stomp:queue:test");

Consuming messages:

from("stomp:queue:test").transform(body().convertToString()).to("mock:result")

Endpoints

Camel supports the Message Endpoint pattern using the Endpoint interface. Endpoints are usually created by a Component and Endpoints are usually referred to in the DSL via their URIs.

From an Endpoint you can use the following methods

* createProducer() will create a Producer for sending message exchanges to the endpoint * createConsumer() implements the Event Driven Consumer pattern for consuming message exchanges from the endpoint via a Processor when creating a Consumer * createPollingConsumer() implements the Polling Consumer pattern for consuming message exchanges from the endpoint via a PollingConsumer

Spring Boot Auto-Configuration

When using stomp with Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

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

The component supports 14 options, which are listed below.

Name Description Default Type

camel.component.stomp.bridge-error-handler

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

camel.component.stomp.broker-url

The URI of the Stomp broker to connect to

tcp://localhost:61613

String

camel.component.stomp.configuration

Component configuration. The option is a org.apache.camel.component.stomp.StompConfiguration type.

String

camel.component.stomp.custom-headers

To set custom headers. The option is a java.util.Properties type.

String

camel.component.stomp.enabled

Whether to enable auto configuration of the stomp component. This is enabled by default.

Boolean

camel.component.stomp.header-filter-strategy

To use a custom org.apache.camel.spi.HeaderFilterStrategy to filter header to and from Camel message. The option is a org.apache.camel.spi.HeaderFilterStrategy type.

String

camel.component.stomp.host

The virtual host name

String

camel.component.stomp.lazy-start-producer

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

Boolean

camel.component.stomp.login

The username

String

camel.component.stomp.passcode

The password

String

camel.component.stomp.ssl-context-parameters

To configure security using SSLContextParameters. The option is a org.apache.camel.support.jsse.SSLContextParameters type.

String

camel.component.stomp.use-global-ssl-context-parameters

Enable usage of global SSL context parameters.

false

Boolean

camel.component.stomp.version

The stomp version (1.1, or 1.2)

String

camel.component.stomp.basic-property-binding

Deprecated Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities

false

Boolean