Chapter 262. PostgresSQL Event Component
Available as of Camel version 2.15
This is a component for Apache Camel which allows for Producing/Consuming PostgreSQL events related to the LISTEN/NOTIFY commands added since PostgreSQL 8.3.
Maven users will need to add the following dependency to their pom.xml for this component:
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-pgevent</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>URI format
The pgevent component uses the following two styles of endpoint URI notation:
pgevent:datasource[?parameters] pgevent://host:port/database/channel[?parameters]
You can append query options to the URI in the following format, ?option=value&option=value&…
262.1. Options
The PostgresSQL Event component has no options.
The PostgresSQL Event endpoint is configured using URI syntax:
pgevent:host:port/database/channel
with the following path and query parameters:
262.1.1. Path Parameters (4 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
| host | To connect using hostname and port to the database. | localhost | String |
| port | To connect using hostname and port to the database. | 5432 | Integer |
| database | Required The database name | String | |
| channel | Required The channel name | String |
262.1.2. Query Parameters (7 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
| datasource (common) | To connect using the given javax.sql.DataSource instead of using hostname and port. | DataSource | |
| 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. | ExchangePattern | |
| synchronous (advanced) | Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). | false | boolean |
| pass (security) | Password for login | String | |
| user (security) | Username for login | postgres | String |
262.2. Spring Boot Auto-Configuration
The component supports 2 options, which are listed below.
| Name | Description | Default | Type |
|---|---|---|---|
| camel.component.pgevent.enabled | Enable pgevent component | true | Boolean |
| camel.component.pgevent.resolve-property-placeholders | Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. | true | Boolean |
262.3. See Also
- Configuring Camel
- Component
- Endpoint
- Getting Started
