[[aws-sdb-component]]
== AWS SimpleDB Component

*Available as of Camel version 2.9*

The sdb component supports storing and retrieving data from/to
http://aws.amazon.com/sdb[Amazon's SDB] service.

Prerequisites

You must have a valid Amazon Web Services developer account, and be
signed up to use Amazon SDB. More information are available at
http://aws.amazon.com/sdb[Amazon SDB].

### URI Format

[source,java]
------------------------------
aws-sdb://domainName[?options]
------------------------------

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

### URI Options


// component options: START
The AWS SimpleDB component has no options.
// component options: END




// endpoint options: START
The AWS SimpleDB endpoint is configured using URI syntax:

----
aws-sdb:domainName
----

with the following path and query parameters:

==== Path Parameters (1 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *domainName* | *Required* The name of the domain currently worked with. |  | String
|===


==== Query Parameters (10 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *accessKey* (producer) | Amazon AWS Access Key |  | String
| *amazonSDBClient* (producer) | To use the AmazonSimpleDB as the client |  | AmazonSimpleDB
| *consistentRead* (producer) | Determines whether or not strong consistency should be enforced when data is read. | false | boolean
| *maxNumberOfDomains* (producer) | The maximum number of domain names you want returned. The range is 1 to 100. |  | Integer
| *operation* (producer) | Operation to perform | PutAttributes | SdbOperations
| *proxyHost* (producer) | To define a proxy host when instantiating the SDB client |  | String
| *proxyPort* (producer) | To define a proxy port when instantiating the SDB client |  | Integer
| *region* (producer) | The region in which SDB client needs to work |  | String
| *secretKey* (producer) | Amazon AWS Secret Key |  | String
| *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</groupId>
  <artifactId>camel-aws-sdb-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.



[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *camel.component.aws-sdb.enabled* | Whether to enable auto configuration of the aws-sdb component. This is enabled by default. |  | Boolean
| *camel.component.aws-sdb.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
|===
// spring-boot-auto-configure options: END




Required SDB component options

You have to provide the amazonSDBClient in the
Registry or your accessKey and secretKey to access
the http://aws.amazon.com/sdb[Amazon's SDB].

### Usage

#### Message headers evaluated by the SDB producer

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

|`CamelAwsSdbAttributes` |`Collection<Attribute>` |List of attributes to be acted upon.

|`CamelAwsSdbAttributeNames` |`Collection<String>` |The names of the attributes to be retrieved.

|`CamelAwsSdbConsistentRead` |`Boolean` |Determines whether or not strong consistency should be enforced when
data is read.

|`CamelAwsSdbDeletableItems` |`Collection<DeletableItem>` |A list of items on which to perform the delete operation in a batch.

|`CamelAwsSdbDomainName` |`String` |The name of the domain currently worked with.

|`CamelAwsSdbItemName` |`String` |The unique key for this item

|`CamelAwsSdbMaxNumberOfDomains` |`Integer` |The maximum number of domain names you want returned. The range is 1 *
to 100.

|`CamelAwsSdbNextToken` |`String` |A string specifying where to start the next list of domain/item names.

|`CamelAwsSdbOperation` |`String` |To override the operation from the URI options.

|`CamelAwsSdbReplaceableAttributes` |`Collection<ReplaceableAttribute>` |List of attributes to put in an Item.

|`CamelAwsSdbReplaceableItems` |`Collection<ReplaceableItem>` |A list of items to put in a Domain.

|`CamelAwsSdbSelectExpression` |`String` |The expression used to query the domain.

|`CamelAwsSdbUpdateCondition` |`UpdateCondition` |The update condition which, if specified, determines whether the
specified attributes will be updated/deleted or not.
|=======================================================================

#### Message headers set during DomainMetadata operation

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

|`CamelAwsSdbTimestamp` |`Integer` |The data and time when metadata was calculated, in Epoch (UNIX) seconds.

|`CamelAwsSdbItemCount` |`Integer` |The number of all items in the domain.

|`CamelAwsSdbAttributeNameCount` |`Integer` |The number of unique attribute names in the domain.

|`CamelAwsSdbAttributeValueCount` |`Integer` |The number of all attribute name/value pairs in the domain.

|`CamelAwsSdbAttributeNameSize` |`Long` |The total size of all unique attribute names in the domain, in bytes.

|`CamelAwsSdbAttributeValueSize` |`Long` |The total size of all attribute values in the domain, in bytes.

|`CamelAwsSdbItemNameSize` |`Long` |The total size of all item names in the domain, in bytes.
|=======================================================================

#### Message headers set during GetAttributes operation

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

|`CamelAwsSdbAttributes` |`List<Attribute>` |The list of attributes returned by the operation.
|=======================================================================

#### Message headers set during ListDomains operation

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

|`CamelAwsSdbDomainNames` |`List<String>` |A list of domain names that match the expression.

|`CamelAwsSdbNextToken` |`String` |An opaque token indicating that there are more domains than the
specified MaxNumberOfDomains still available.
|=======================================================================

#### Message headers set during Select operation

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

|`CamelAwsSdbItems` |`List<Item>` |A list of items that match the select expression.

|`CamelAwsSdbNextToken` |`String` |An opaque token indicating that more items than MaxNumberOfItems were
matched, the response size exceeded 1 megabyte, or the execution time
exceeded 5 seconds.
|=======================================================================

#### Advanced AmazonSimpleDB configuration

If you need more control over the `AmazonSimpleDB` instance
configuration you can create your own instance and refer to it from the
URI:

[source,java]
----------------------------------------------------
from("direct:start")
.to("aws-sdb://domainName?amazonSDBClient=#client");
----------------------------------------------------

The `#client` refers to a `AmazonSimpleDB` in the
Registry.

For example if your Camel Application is running behind a firewall:

[source,java]
--------------------------------------------------------------------------------------
AWSCredentials awsCredentials = new BasicAWSCredentials("myAccessKey", "mySecretKey");
ClientConfiguration clientConfiguration = new ClientConfiguration();
clientConfiguration.setProxyHost("http://myProxyHost");
clientConfiguration.setProxyPort(8080);

AmazonSimpleDB client = new AmazonSimpleDBClient(awsCredentials, clientConfiguration);

registry.bind("client", client);
--------------------------------------------------------------------------------------

### Dependencies

Maven users will need to add the following dependency to their pom.xml.

*pom.xml*

[source,xml]
---------------------------------------
<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-aws-sdb</artifactId>
    <version>${camel-version}</version>
</dependency>
---------------------------------------

where `${camel-version}` must be replaced by the actual version of Camel
(2.8.4 or higher).

### See Also

* Configuring Camel
* Component
* Endpoint
* Getting Started

* AWS Component
