Corda

URI Format

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

Configuring Options

Camel components are configured on two separate levels:

component level
endpoint level

Configuring Component Options

The component level is the highest level which holds general and common configurations that are inherited by the endpoints. For example a component may have security settings, credentials for authentication, urls for network connection and so forth.

Some components only have a few options, and others may have many. Because components typically have pre configured defaults that are commonly used, then you may often only need to configure a few options on a component; or none at all.

Configuring components can be done with the Component DSL, in a configuration file (application.properties|yaml), or directly with Java code.

Configuring Endpoint Options

Where you find yourself configuring the most is on endpoints, as endpoints often have many options, which allows you to configure what you need the endpoint to do. The options are also categorized into whether the endpoint is used as consumer (from) or as a producer (to), or used for both.

Configuring endpoints is most often done directly in the endpoint URI as path and query parameters. You can also use the Endpoint DSL and DataFormat DSL as a type safe way of configuring endpoints and data formats in Java.

A good practice when configuring options is to use Property Placeholders, which allows to not hardcode urls, port numbers, sensitive information, and other settings. In other words placeholders allows to externalize the configuration from your code, and gives more flexibility and reuse.

The following two sections lists all the options, firstly for the component followed by the endpoint.

Component Options

The Corda component supports 14 options, which are listed below.

Name	Description	Default	Type
configuration (common)	To use a shared configuration.		CordaConfiguration
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
pageSpecification (consumer)	PageSpecification allows specification of a page number (starting from 1) and page size (defaulting to 200 with a maximum page size of (Integer.MAX_INT) Note: we default the page number to 200 to enable queries without requiring a page specification but enabling detection of large results sets that fall out of the 200 requirement. Max page size should be used with extreme caution as results may exceed your JVM memory footprint.	200	PageSpecification
processSnapshot (consumer)	Whether to process snapshots or not.	true	boolean
sort (consumer)	Sort allows specification of a set of entity attribute names and their associated directionality and null handling, to be applied upon processing a query specification. Enum values: ASC DESC		Sort
contractStateClass (consumer (advanced))	A contract state (or just state) contains opaque data used by a contract program. It can be thought of as a disk file that the program can use to persist data across transactions. States are immutable: once created they are never updated, instead, any changes must generate a new successor state. States can be updated (consumed) only once: the notary is responsible for ensuring there is no double spending by only signing a transaction if the input states are all free.		Class
flowLogicArguments (consumer (advanced))	Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.		Object[]
flowLogicClass (consumer (advanced))	Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.		Class
queryCriteria (consumer (advanced))	QueryCriteria assumes underlying schema tables are correctly indexed for performance.		QueryCriteria
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
autowiredEnabled (advanced)	Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.	true	boolean
password (security)	Password for login.		String
username (security)	Username for login.		String

Name

Description

Default

Type

configuration (common)

To use a shared configuration.

CordaConfiguration

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

pageSpecification (consumer)

PageSpecification allows specification of a page number (starting from 1) and page size (defaulting to 200 with a maximum page size of (Integer.MAX_INT) Note: we default the page number to 200 to enable queries without requiring a page specification but enabling detection of large results sets that fall out of the 200 requirement. Max page size should be used with extreme caution as results may exceed your JVM memory footprint.

200

PageSpecification

processSnapshot (consumer)

Whether to process snapshots or not.

true

boolean

sort (consumer)

Sort allows specification of a set of entity attribute names and their associated directionality and null handling, to be applied upon processing a query specification.

Enum values:

ASC
DESC

Sort

contractStateClass (consumer (advanced))

A contract state (or just state) contains opaque data used by a contract program. It can be thought of as a disk file that the program can use to persist data across transactions. States are immutable: once created they are never updated, instead, any changes must generate a new successor state. States can be updated (consumed) only once: the notary is responsible for ensuring there is no double spending by only signing a transaction if the input states are all free.

Class

flowLogicArguments (consumer (advanced))

Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.

Object[]

flowLogicClass (consumer (advanced))

Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.

Class

queryCriteria (consumer (advanced))

QueryCriteria assumes underlying schema tables are correctly indexed for performance.

QueryCriteria

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

autowiredEnabled (advanced)

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

boolean

password (security)

Password for login.

String

username (security)

Username for login.

String

Endpoint Options

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 (common)	Required The url for the corda node.		String

Name

Description

Default

Type

node (common)

Required The url for the corda node.

String

Query Parameters (14 parameters)

Name	Description	Default	Type
pageSpecification (consumer)	PageSpecification allows specification of a page number (starting from 1) and page size (defaulting to 200 with a maximum page size of (Integer.MAX_INT) Note: we default the page number to 200 to enable queries without requiring a page specification but enabling detection of large results sets that fall out of the 200 requirement. Max page size should be used with extreme caution as results may exceed your JVM memory footprint.	200	PageSpecification
processSnapshot (consumer)	Whether to process snapshots or not.	true	boolean
sort (consumer)	Sort allows specification of a set of entity attribute names and their associated directionality and null handling, to be applied upon processing a query specification. Enum values: ASC DESC		Sort
bridgeErrorHandler (consumer (advanced))	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
contractStateClass (consumer (advanced))	A contract state (or just state) contains opaque data used by a contract program. It can be thought of as a disk file that the program can use to persist data across transactions. States are immutable: once created they are never updated, instead, any changes must generate a new successor state. States can be updated (consumed) only once: the notary is responsible for ensuring there is no double spending by only signing a transaction if the input states are all free.		Class
exceptionHandler (consumer (advanced))	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 (advanced))	Sets the exchange pattern when the consumer creates an exchange. Enum values: InOnly InOut InOptionalOut		ExchangePattern
flowLogicArguments (consumer (advanced))	Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.		Object[]
flowLogicClass (consumer (advanced))	Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.		Class
queryCriteria (consumer (advanced))	QueryCriteria assumes underlying schema tables are correctly indexed for performance.		QueryCriteria
operation (producer)	Operation to use.		String
lazyStartProducer (producer (advanced))	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
password (security)	Password for login.		String
username (security)	Username for login.		String

Name

Description

Default

Type

pageSpecification (consumer)

PageSpecification allows specification of a page number (starting from 1) and page size (defaulting to 200 with a maximum page size of (Integer.MAX_INT) Note: we default the page number to 200 to enable queries without requiring a page specification but enabling detection of large results sets that fall out of the 200 requirement. Max page size should be used with extreme caution as results may exceed your JVM memory footprint.

200

PageSpecification

processSnapshot (consumer)

Whether to process snapshots or not.

true

boolean

sort (consumer)

Sort allows specification of a set of entity attribute names and their associated directionality and null handling, to be applied upon processing a query specification.

Enum values:

ASC
DESC

Sort

bridgeErrorHandler (consumer (advanced))

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

contractStateClass (consumer (advanced))

A contract state (or just state) contains opaque data used by a contract program. It can be thought of as a disk file that the program can use to persist data across transactions. States are immutable: once created they are never updated, instead, any changes must generate a new successor state. States can be updated (consumed) only once: the notary is responsible for ensuring there is no double spending by only signing a transaction if the input states are all free.

Class

exceptionHandler (consumer (advanced))

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 (advanced))

Sets the exchange pattern when the consumer creates an exchange.

Enum values:

InOnly
InOut
InOptionalOut

ExchangePattern

flowLogicArguments (consumer (advanced))

Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.

Object[]

flowLogicClass (consumer (advanced))

Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.

Class

queryCriteria (consumer (advanced))

QueryCriteria assumes underlying schema tables are correctly indexed for performance.

QueryCriteria

operation (producer)

Operation to use.

String

lazyStartProducer (producer (advanced))

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

password (security)

Password for login.

String

username (security)

Username for login.

String

Message Headers

The Corda component supports 9 message header(s), which is/are listed below:

Name Description Default Type

Name	Description	Type
OPERATION (producer) Constant: `OPERATION`	The operation to perform.	String
ATTACHMENT_QUERY_CRITERIA (producer) Constant: `ATTACHMENT_QUERY_CRITERIA`	The attachment query criteria.	AttachmentQueryCriteria
SORT (producer) Constant: `SORT`	The sort.
EXACT_MATCH (producer) Constant: `EXACT_MATCH`	If true, a case sensitive match is done against each component of each X.500 name.	Boolean
ARGUMENTS (producer) Constant: `ARGUMENTS`	The arguments.	Object[]
DRAINING_MODE (producer) Constant: `DRAINING_MODE`	The value of the node’s flows draining mode.	Boolean
SECURE_HASH (producer) Constant: `SECURE_HASH`	Container for a cryptographically secure hash value.	SecureHash
QUERY_CRITERIA (producer) Constant: `QUERY_CRITERIA`	The query criteria.	QueryCriteria
PAGE_SPECIFICATION (producer) Constant: `PAGE_SPECIFICATION`	The PageSpecification allows specification of a page number and page size.	PageSpecification

OPERATION (producer)

Constant: OPERATION

The operation to perform.

String

ATTACHMENT_QUERY_CRITERIA (producer)

Constant: ATTACHMENT_QUERY_CRITERIA

The attachment query criteria.

AttachmentQueryCriteria

SORT (producer)

Constant: SORT

The sort.

EXACT_MATCH (producer)

Constant: EXACT_MATCH

If true, a case sensitive match is done against each component of each X.500 name.

Boolean

ARGUMENTS (producer)

Constant: ARGUMENTS

The arguments.

Object[]

DRAINING_MODE (producer)

Constant: DRAINING_MODE

The value of the node’s flows draining mode.

Boolean

SECURE_HASH (producer)

Constant: SECURE_HASH

Container for a cryptographically secure hash value.

SecureHash

QUERY_CRITERIA (producer)

Constant: QUERY_CRITERIA

The query criteria.

QueryCriteria

PAGE_SPECIFICATION (producer)

Constant: PAGE_SPECIFICATION

The PageSpecification allows specification of a page number and page size.

PageSpecification

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");

Spring Boot Auto-Configuration

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

The component supports 15 options, which are listed below.

Name	Description	Default	Type
camel.component.corda.autowired-enabled	Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.	true	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	To use a shared configuration. The option is a org.apache.camel.component.corda.CordaConfiguration type.		CordaConfiguration
camel.component.corda.contract-state-class	A contract state (or just state) contains opaque data used by a contract program. It can be thought of as a disk file that the program can use to persist data across transactions. States are immutable: once created they are never updated, instead, any changes must generate a new successor state. States can be updated (consumed) only once: the notary is responsible for ensuring there is no double spending by only signing a transaction if the input states are all free.		Class
camel.component.corda.enabled	Whether to enable auto configuration of the corda component. This is enabled by default.		Boolean
camel.component.corda.flow-logic-arguments	Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.		Object[]
camel.component.corda.flow-logic-class	Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.		Class
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
camel.component.corda.operation	Operation to use.		String
camel.component.corda.page-specification	PageSpecification allows specification of a page number (starting from 1) and page size (defaulting to 200 with a maximum page size of (Integer.MAX_INT) Note: we default the page number to 200 to enable queries without requiring a page specification but enabling detection of large results sets that fall out of the 200 requirement. Max page size should be used with extreme caution as results may exceed your JVM memory footprint. The option is a net.corda.core.node.services.vault.PageSpecification type.		PageSpecification
camel.component.corda.password	Password for login.		String
camel.component.corda.process-snapshot	Whether to process snapshots or not.	true	Boolean
camel.component.corda.query-criteria	QueryCriteria assumes underlying schema tables are correctly indexed for performance. The option is a net.corda.core.node.services.vault.QueryCriteria type.		QueryCriteria
camel.component.corda.sort	Sort allows specification of a set of entity attribute names and their associated directionality and null handling, to be applied upon processing a query specification.		Sort
camel.component.corda.username	Username for login.		String

Name

Description

Default

Type

camel.component.corda.autowired-enabled

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

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

To use a shared configuration. The option is a org.apache.camel.component.corda.CordaConfiguration type.

CordaConfiguration

camel.component.corda.contract-state-class

A contract state (or just state) contains opaque data used by a contract program. It can be thought of as a disk file that the program can use to persist data across transactions. States are immutable: once created they are never updated, instead, any changes must generate a new successor state. States can be updated (consumed) only once: the notary is responsible for ensuring there is no double spending by only signing a transaction if the input states are all free.

Class

camel.component.corda.enabled

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

Boolean

camel.component.corda.flow-logic-arguments

Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.

Object[]

camel.component.corda.flow-logic-class

Start the given flow with the given arguments, returning an Observable with a single observation of the result of running the flow. The flowLogicClass must be annotated with net.corda.core.flows.StartableByRPC.

Class

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

camel.component.corda.operation

Operation to use.

String

camel.component.corda.page-specification

PageSpecification allows specification of a page number (starting from 1) and page size (defaulting to 200 with a maximum page size of (Integer.MAX_INT) Note: we default the page number to 200 to enable queries without requiring a page specification but enabling detection of large results sets that fall out of the 200 requirement. Max page size should be used with extreme caution as results may exceed your JVM memory footprint. The option is a net.corda.core.node.services.vault.PageSpecification type.

PageSpecification

camel.component.corda.password

Password for login.

String

camel.component.corda.process-snapshot

Whether to process snapshots or not.

true

Boolean

camel.component.corda.query-criteria

QueryCriteria assumes underlying schema tables are correctly indexed for performance. The option is a net.corda.core.node.services.vault.QueryCriteria type.

QueryCriteria

camel.component.corda.sort

Sort allows specification of a set of entity attribute names and their associated directionality and null handling, to be applied upon processing a query specification.

Sort

camel.component.corda.username

Username for login.

String