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h2. SNS Component
*Available as of Camel 2.8*

The SNS component allows messages to be sent to an [Amazon Simple Notification|http://aws.amazon.com/sns] Topic. The implementation of the Amazon API is provided by the [AWS SDK|http://aws.amazon.com/sdkforjava/].

{info:title=Prerequisites}
You must have a valid Amazon Web Services developer account, and be signed up to use Amazon SNS. More information are available at [Amazon SNS|http://aws.amazon.com/sns].
{info}

h3. URI Format
{code}
aws-sns://topicName[?options]
{code}
The topic will be created if they don't already exists.
You can append query options to the URI in the following format, {{?options=value&option2=value&...}}

h3. URI Options
|| Name || Default Value || Context || Description ||
|amazonSNSClient | {{null}} | Producer | Reference to a {{com.amazonaws.services.sqs.AmazonSNSClient}} in the [Registry]. |
|accessKey | {{null}} | Producer | Amazon AWS Access Key |
|secretKey | {{null}} | Producer | Amazon AWS Secret Key |
|subject | {{null}} | Producer | The subject which is used if the message header 'CamelAwsSnsSubject' is not present. |
|amazonSNSEndpoint | {{null}} | SharedProducer | The region with which the AWS-SNS client wants to work with. |

{info:title=Required SNS component options}
You have to provide the amazonSNSClient in the [Registry] or your accessKey and secretKey to access the [Amazon's SNS|http://aws.amazon.com/sns].
{info}

h3. Usage
h4. Message headers evaluated by the SNS producer
{div:class=confluenceTableSmall}
|| Header || Type || Description ||
| {{CamelAwsSnsSubject}} | {{String}} | The Amazon SNS message subject. If not set, the subject from the {{SnsConfiguration}} is used. |
{div}

h4. Message headers set by the SNS producer
{div:class=confluenceTableSmall}
|| Header || Type || Description ||
| {{CamelAwsSnsMessageId}} | {{String}} | The Amazon SNS message ID. |
{div}

h4. Advanced AmazonSNSClient configuration
If you need more control over the {{AmazonSNSClient}} configuration you can create your own instance and refer to it from the URI:
{code}
from("direct:start")
.to("aws-sns://MyTopic?amazonSNSClient=#amazonSNSClient");
{code}
The {{#amazonSNSClient}} refers to a {{AmazonSNSClient}} in the [Registry].

For example if your Camel Application is running behind a firewall:
{code}
AWSCredentials awsCredentials = new BasicAWSCredentials("myAccessKey", "mySecretKey");
ClientConfiguration clientConfiguration = new ClientConfiguration();
clientConfiguration.setProxyHost("http://myProxyHost");
clientConfiguration.setProxyPort(8080);
AmazonSNSClient amazonSNSClient = new AmazonSNSClient(awsCredentials, clientConfiguration);
{code}

h3. Dependencies
Maven users will need to add the following dependency to their pom.xml.
{code:xml|title=pom.xml}
<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-aws</artifactId>
    <version>${camel-version}</version>
</dependency>
{code}

where {{$\{camel-version\}}} must be replaced by the actual version of Camel (2.8 or higher).

{include:Endpoint See Also}
- [AWS Component|AWS]