[[hazelcast-atomicvalue-component]]
= Hazelcast Atomic Number Component
:page-source: components/camel-hazelcast/src/main/docs/hazelcast-atomicvalue-component.adoc

*Since Camel 2.7*

// HEADER START
*Only producer is supported*
// HEADER END

The http://www.hazelcast.com/[Hazelcast] atomic number component is one of Camel Hazelcast Components which allows you to access Hazelcast atomic number.
An atomic number is an object that simply provides a grid wide number (long). 

*There is no consumer for this endpoint!*


== Options

// component options: START
The Hazelcast Atomic Number component supports 5 options, which are listed below.


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *hazelcastInstance* (advanced) | The hazelcast instance reference which can be used for hazelcast endpoint. If you don't specify the instance reference, camel use the default hazelcast instance from the camel-hazelcast instance. |  | HazelcastInstance
| *hazelcastMode* (advanced) | The hazelcast mode reference which kind of instance should be used. If you don't specify the mode, then the node mode will be the default. | node | String
| *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
|===
// component options: END

// endpoint options: START
The Hazelcast Atomic Number endpoint is configured using URI syntax:

----
hazelcast-atomicvalue:cacheName
----

with the following path and query parameters:

=== Path Parameters (1 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *cacheName* | *Required* The name of the cache |  | String
|===


=== Query Parameters (6 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *defaultOperation* (producer) | To specify a default operation to use, if no operation header has been provided. |  | HazelcastOperation
| *hazelcastInstance* (producer) | The hazelcast instance reference which can be used for hazelcast endpoint. |  | HazelcastInstance
| *hazelcastInstanceName* (producer) | The hazelcast instance reference name which can be used for hazelcast endpoint. If you don't specify the instance reference, camel use the default hazelcast instance from the camel-hazelcast instance. |  | String
| *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
|===
// endpoint options: END
// spring-boot-auto-configure options: START
== Spring Boot Auto-Configuration

When using Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

[source,xml]
----
<dependency>
  <groupId>org.apache.camel.springboot</groupId>
  <artifactId>camel-hazelcast-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>
----


The component supports 8 options, which are listed below.


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *camel.component.hazelcast-atomicvalue.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.hazelcast-atomicvalue.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.hazelcast-atomicvalue.customizer.hazelcast-instance.enabled* | Enable or disable the cache-manager customizer. | true | Boolean
| *camel.component.hazelcast-atomicvalue.customizer.hazelcast-instance.override* | Configure if the cache manager eventually set on the component should be overridden by the customizer. | false | Boolean
| *camel.component.hazelcast-atomicvalue.enabled* | Enable hazelcast-atomicvalue component | true | Boolean
| *camel.component.hazelcast-atomicvalue.hazelcast-instance* | The hazelcast instance reference which can be used for hazelcast endpoint. If you don't specify the instance reference, camel use the default hazelcast instance from the camel-hazelcast instance. The option is a com.hazelcast.core.HazelcastInstance type. |  | String
| *camel.component.hazelcast-atomicvalue.hazelcast-mode* | The hazelcast mode reference which kind of instance should be used. If you don't specify the mode, then the node mode will be the default. | node | String
| *camel.component.hazelcast-atomicvalue.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
|===
// spring-boot-auto-configure options: END


== atomic number producer - to("hazelcast-atomicvalue:foo")

The operations for this producer are:
* setvalue (set the number with a given value)
* get
* increase (+1)
* decrease (-1)
* destroy

Header Variables for the request message:

[width="100%",cols="10%,10%,80%",options="header",]
|=======================================================================
|Name |Type |Description

|`CamelHazelcastOperationType` |`String` |valid values are: setvalue, get, increase, decrease, destroy 
|=======================================================================

=== Sample for *set*:

Java DSL:

[source,java]
-----------------------------------------------------------------------------------------
from("direct:set")
.setHeader(HazelcastConstants.OPERATION, constant(HazelcastOperation.SET_VALUE))
.toF("hazelcast-%sfoo", HazelcastConstants.ATOMICNUMBER_PREFIX);
-----------------------------------------------------------------------------------------

Spring DSL:

[source,java]
-----------------------------------------------------------------------------------------------
<route>
    <from uri="direct:set" />
    <setHeader name="hazelcast.operation.type">
        <constant>setvalue</constant>
    </setHeader>
    <to uri="hazelcast-atomicvalue:foo" />
</route>
-----------------------------------------------------------------------------------------------

Provide the value to set inside the message body (here the value is 10):
`template.sendBody("direct:set", 10);`

=== Sample for *get*:

Java DSL:

[source,java]
------------------------------------------------------------------------------------
from("direct:get")
.setHeader(HazelcastConstants.OPERATION, constant(HazelcastOperation.GET))
.toF("hazelcast-%sfoo", HazelcastConstants.ATOMICNUMBER_PREFIX);
------------------------------------------------------------------------------------

Spring DSL:

[source,java]
-----------------------------------------------------------------------------------------------
<route>
    <from uri="direct:get" />
    <setHeader name="hazelcast.operation.type">
        <constant>get</constant>
    </setHeader>
    <to uri="hazelcast-atomicvalue:foo" />
</route>
-----------------------------------------------------------------------------------------------

You can get the number with
`long body = template.requestBody("direct:get", null, Long.class);`.

=== Sample for *increment*:

Java DSL:

[source,java]
------------------------------------------------------------------------------------------
from("direct:increment")
.setHeader(HazelcastConstants.OPERATION, constant(HazelcastOperation.INCREMENT))
.toF("hazelcast-%sfoo", HazelcastConstants.ATOMICNUMBER_PREFIX);
------------------------------------------------------------------------------------------

Spring DSL:

[source,java]
-----------------------------------------------------------------------------------------------
<route>
    <from uri="direct:increment" />
    <setHeader name="hazelcast.operation.type">
        <constant>increment</constant>
    </setHeader>
    <to uri="hazelcast-atomicvalue:foo" />
</route>
-----------------------------------------------------------------------------------------------

The actual value (after increment) will be provided inside the message
body.

=== Sample for *decrement*:

Java DSL:

[source,java]
------------------------------------------------------------------------------------------
from("direct:decrement")
.setHeader(HazelcastConstants.OPERATION, constant(HazelcastOperation.DECREMENT))
.toF("hazelcast-%sfoo", HazelcastConstants.ATOMICNUMBER_PREFIX);
------------------------------------------------------------------------------------------

Spring DSL:

[source,java]
-----------------------------------------------------------------------------------------------
<route>
    <from uri="direct:decrement" />
    <setHeader name="hazelcast.operation.type">
        <constant>decrement</constant>
    </setHeader>
    <to uri="hazelcast-atomicvalue:foo" />
</route>
-----------------------------------------------------------------------------------------------

The actual value (after decrement) will be provided inside the message
body.

=== Sample for *destroy*

Java DSL:

[source,java]
----------------------------------------------------------------------------------------
from("direct:destroy")
.setHeader(HazelcastConstants.OPERATION, constant(HazelcastOperation.DESTROY))
.toF("hazelcast-%sfoo", HazelcastConstants.ATOMICNUMBER_PREFIX);
----------------------------------------------------------------------------------------

Spring DSL:

[source,java]
-----------------------------------------------------------------------------------------------
<route>
    <from uri="direct:destroy" />
    <setHeader name="hazelcast.operation.type">
        <constant>destroy</constant>
    </setHeader>
    <to uri="hazelcast-atomicvalue:foo" />
</route>
-----------------------------------------------------------------------------------------------