Corda Component

Both producer and consumer is supported

Since Camel 2.23

Camel connector for R3’s corda blockchain platform using corda-rpc library. This component uses the corda rpc client.

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

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

URI Format

corda://<host:port>[?options]

Corda Options

The Corda component supports 4 options, which are listed below.

Name Description Default Type

configuration (common)

To use a shared configuration.

CordaConfiguration

basicPropertyBinding (advanced)

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

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

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

The Corda endpoint is configured using URI syntax:

corda:node

with the following path and query parameters:

Path Parameters (1 parameters):

Name Description Default Type

node

Required The url for the corda node

String

Query Parameters (9 parameters):

Name Description Default Type

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

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

operation (producer)

Operation to use

String

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

password (security)

Password for login

String

username (security)

Username for login

String

Spring Boot Auto-Configuration

When using 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-corda-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>

The component supports 17 options, which are listed below.

Name Description Default Type

camel.component.corda.basic-property-binding

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

false

Boolean

camel.component.corda.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.corda.configuration.arguments

Whether to process snapshots or not

Object[]

camel.component.corda.configuration.contract-state-class

Whether to process snapshots or not

Class

camel.component.corda.configuration.flow-loci-class

Whether to process snapshots or not

Class

camel.component.corda.configuration.host

Password for login

String

camel.component.corda.configuration.node

The url for the corda node

String

camel.component.corda.configuration.operation

Operation to use

String

camel.component.corda.configuration.page-specification

Whether to process snapshots or not

PageSpecification

camel.component.corda.configuration.password

Password for login

String

camel.component.corda.configuration.port

Password for login

Integer

camel.component.corda.configuration.process-snapshot

Whether to process snapshots or not

Boolean

camel.component.corda.configuration.query-criteria

Whether to process snapshots or not

QueryCriteria

camel.component.corda.configuration.sort

Whether to process snapshots or not

Sort

camel.component.corda.configuration.username

Username for login

String

camel.component.corda.enabled

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

Boolean

camel.component.corda.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

You can append query options to the URI in the following format, ?options=value&option2=value&…​

Message Headers

Header Description

All URI options

All URI options can also be set as exchange headers.

Samples

Subscribe for new vault state changes:

from("corda://localhost:10006?username=user1&password=test&operation=VAULT_TRACK&contractStateClass=#contractStateClass")
    .to("jms:queue:vault");

Read the node information:

from("direct:start")
    .to("corda://localhost:10006?username=user1&password=test&operation=NODE_INFO");