OSGi EventAdmin Component
Since Camel 2.6
Both producer and consumer is supported
The Eventadmin component can be used in an OSGi environment to receive OSGi EventAdmin events and process them.
Dependencies
Maven users need to add the following dependency to their pom.xml
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-eventadmin</artifactId>
<version>${camel-version}</version>
</dependency>where ${camel-version} must be replaced by the actual version of Camel.
URI options
The OSGi EventAdmin component supports 4 options, which are listed below.
| Name | Description | Default | Type |
|---|---|---|---|
bundleContext (common) |
The OSGi BundleContext is automatic injected by Camel |
BundleContext |
|
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) |
Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities |
false |
boolean |
The OSGi EventAdmin endpoint is configured using URI syntax:
eventadmin:topic
with the following path and query parameters:
Path Parameters (1 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
topic |
Name of topic to listen or send to |
String |
Query Parameters (7 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
send (common) |
Whether to use 'send' or 'synchronous' deliver. Default false (async delivery) |
false |
boolean |
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. 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 |
synchronous (advanced) |
Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). |
false |
boolean |