IOTA Component

Available as of Camel version 2.23

According to IOTA Official site: "IOTA is the first open-source distributed ledger that is being built to power the future of the Internet of Things with feeless microtransactions and data integrity for machines."

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

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

URI format

iota:name?url=nodeurl[&moreOptions...]

Options

The IOTA component has no options.

The IOTA endpoint is configured using URI syntax:

iota:name

with the following path and query parameters:

Path Parameters (1 parameters):

Name Description Default Type

name

Required Component name

String

Query Parameters (10 parameters):

Name Description Default Type

depth (common)

The depth determines how deep the tangle is analysed for getting Tips

9

Integer

minWeightMagnitude (common)

The minWeightMagnitude is the minimum number of zeroes that a proof-of-work output/transaction hash must end with to be considered valid by full nodes

14

Integer

operation (common)

Supported operations are 'sendTransfer', 'getNewAddress'

String

securityLevel (common)

Address security level

1

Integer

tag (common)

TAG

String

url (common)

Node url

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.

ExchangePattern

synchronous (advanced)

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

false

boolean

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

The component supports 2 options, which are listed below.

Name Description Default Type

camel.component.iota.enabled

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

Boolean

camel.component.iota.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

Sample route

The following route defined in Spring XML send a message to tangle

Send message to tangle

<route>
  <from uri="direct:start" />
  <setMessage>
  	<constant>Hello world!</constant>
  </setMessage>
  <setHeader headerName="CamelIOTASeed">
  	<constant>MYSEEDHERE</constant>
  </setHeader>
  <setHeader headerName="CamelIOTAValue">
  	<constant>1</constant>
  </setHeader>
  <setHeader headerName="CamelIOTAToAddress">
  	<constant>RECIPIENTADDRESS</constant>
  </setHeader>
  <setHeader headerName="CamelIOTAToAddress">
  	<constant>RECIPIENTADDRESS</constant>
  </setHeader>

  <to uri="iota:good?url=https://node.iota.org:443&operation=sendTransfer" />
  <to uri="direct:result" />
</route>

The following route defined in Spring XML create a new address

Create a new address

<route>
  <from uri="direct:start" />
  <setHeader headerName="CamelIOTASeed">
  	<constant>MYSEEDHERE</constant>
  </setHeader>
  <setHeader headerName="CamelIOTAAddressIndex">
  	<constant>1</constant>
  </setHeader>

  <to uri="iota:good?url=https://node.iota.org:443&operation=getNewAddress" />
  <to uri="direct:result" />
</route>

The following route defined in Spring XML retrieve transfers data

Retrieve transfers

<route>
  <from uri="direct:start" />
  <setHeader headerName="CamelIOTASeed">
  	<constant>MYSEEDHERE</constant>
  </setHeader>
  <setHeader headerName="CamelIOTAAddressStartIndex">
  	<constant>1</constant>
  </setHeader>
  <setHeader headerName="CamelIOTAAddressEndIndex">
  	<constant>10</constant>
  </setHeader>

  <to uri="iota:good?url=https://node.iota.org:443&operation=getTransfers" />
  <to uri="direct:result" />
</route>