View Source

SDB Component

Available as of Camel 2.8.4

The sdb component supports storing and retrieving data from/to Amazon's SDB service.

You must have a valid Amazon Web Services developer account, and be signed up to use Amazon SDB. More information are available at Amazon SDB.

URI Format

aws-sdb://domainName[?options]

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

URI Options

Name	Default Value	Context	Description
amazonSDBClient	`null`	Producer	Reference to a `com.amazonaws.services.simpledb.AmazonSimpleDB` in the Registry.
accessKey	`null`	Producer	Amazon AWS Access Key
secretKey	`null`	Producer	Amazon AWS Secret Key
amazonSdbEndpoint	`null`	Producer	The region with which the AWS-SDB client wants to work with.
domainName	`null`	Producer	The name of the domain currently worked with.
maxNumberOfDomains	`100`	Producer	The maximum number of domain names you want returned. The range is 1 * to 100.
consistentRead	`false`	Producer	Determines whether or not strong consistency should be enforced when data is read.
operation	`PutAttributes`	Producer	Valid values are BatchDeleteAttributes, BatchPutAttributes, DeleteAttributes, DeleteDomain, DomainMetadata, GetAttributes, ListDomains, PutAttributes, Select.
proxyHost	`null`	Producer	Camel 2.16: Specify a proxy host to be used inside the client definition.
proxyPort	`null`	Producer	Camel 2.16: Specify a proxy port to be used inside the client definition.

You have to provide the amazonSDBClient in the Registry or your accessKey and secretKey to access the Amazon's SDB.

Usage

Message headers evaluated by the SDB producer

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

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

Header	Type	Description
`CamelAwsSdbAttributes`	`List<Attribute>`	The list of attributes returned by the operation.

Message headers set during ListDomains operation

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

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:

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:

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.

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-aws</artifactId>
    <version>${camel-version}</version>
</dependency>

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

AWS Component