10.4. AWS-S3

S3 Component

Available as of Camel 2.8
The S3 component supports storing and retrieving objetcs from/to Amazon's S3 service.
Prerequisites
You must have a valid Amazon Web Services developer account, and be signed up to use Amazon S3. More information are available at Amazon S3.

URI Format

aws-s3://bucket-name[?options]
The bucket will be created if it don't already exists. You can append query options to the URI in the following format, ?options=value&option2=value&...

URI Options

Name Default Value Context Description
amazonS3Client null Shared Reference to a com.amazonaws.services.sqs.AmazonS3 in the Registry.
accessKey null Shared Amazon AWS Access Key
secretKey null Shared Amazon AWS Secret Key
amazonS3Endpoint null Shared The region with which the AWS-S3 client wants to work with.
region null Producer The region who the bucket is located. This option is used in the com.amazonaws.services.s3.model.CreateBucketRequest.
deleteAfterRead true Consumer Delete objects from S3 after it has been retrieved.
deleteAfterWrite false Producer Camel 2.11.0 Delete file object after the S3 file has been uploaded
maxMessagesPerPoll 10 Consumer The maximum number of objects which can be retrieved in one poll. Used in in the com.amazonaws.services.s3.model.ListObjectsRequest.
policy null Shared *Camel 2.8.4*: The policy for this queue to set in the com.amazonaws.services.s3.AmazonS3#setBucketPolicy() method.
storageClass null Producer *Camel 2.8.4*: The storage class to set in the com.amazonaws.services.s3.model.PutObjectRequest request.
prefix null Consumer *Camel 2.10.1*: The prefix which is used in the com.amazonaws.services.s3.model.ListObjectsRequest to only consume objects we are interested in.
multiPartUpload false Producer Camel 2.15.0: If true, Camel uploads the file in multi-part format, where the part size can be specified by the partSize option.
partSize 25 * 1024 * 1024 Producer Camel 2.15.0: Specifies the partSize used in multi-part upload. Default is 25 MB.
Required S3 component options
You have to provide the amazonS3Client in the Registry or your accessKey and secretKey to access the Amazon's S3.

Batch Consumer

This component implements the Batch Consumer.
This allows you for instance to know how many messages exists in this batch and for instance let the Aggregator aggregate this number of messages.

Usage

Message headers evaluated by the S3 producer

Header Type Description
CamelAwsS3Key String The key under which this object will be stored.
CamelAwsS3ContentLength Long The content length of this object.
CamelAwsS3ContentType String The content type of this object.
CamelAwsS3ContentControl String The content control of this object.
CamelAwsS3ContentDisposition String The content disposition of this object.
CamelAwsS3ContentEncoding String The content encoding of this object.
CamelAwsS3ContentMD5 String The md5 checksum of this object.
CamelAwsS3LastModified java.util.Date The last modified timestamp of this object.
CamelAwsS3StorageClass String *Camel 2.8.4:* The storage class of this object.
CamelAwsS3CannedAcl String Camel 2.11.0: The canned acl that will be applied to the object. see com.amazonaws.services.s3.model.CannedAccessControlList for allowed values.
CamelAwsS3Acl com.amazonaws.services.s3.model.AccessControlList Camel 2.11.0: a well constructed Amazon S3 Access Control List object. see com.amazonaws.services.s3.model.AccessControlList for more details

Message headers set by the S3 producer

Header Type Description
CamelAwsS3ETag String The ETag value for the newly uploaded object.
CamelAwsS3VersionId String The optional version ID of the newly uploaded object.

Message headers set by the S3 consumer

Header Type Description
CamelAwsS3Key String The key under which this object is stored.
CamelAwsS3BucketName String The name of the bucket in which this object is contained.
CamelAwsS3ETag String The hex encoded 128-bit MD5 digest of the associated object according to RFC 1864. This data is used as an integrity check to verify that the data received by the caller is the same data that was sent by Amazon S3.
CamelAwsS3LastModified Date The value of the Last-Modified header, indicating the date and time at which Amazon S3 last recorded a modification to the associated object.
CamelAwsS3VersionId String The version ID of the associated Amazon S3 object if available. Version IDs are only assigned to objects when an object is uploaded to an Amazon S3 bucket that has object versioning enabled.
CamelAwsS3ContentType String The Content-Type HTTP header, which indicates the type of content stored in the associated object. The value of this header is a standard MIME type.
CamelAwsS3ContentMD5 String The base64 encoded 128-bit MD5 digest of the associated object (content - not including headers) according to RFC 1864. This data is used as a message integrity check to verify that the data received by Amazon S3 is the same data that the caller sent.
CamelAwsS3ContentLength Long The Content-Length HTTP header indicating the size of the associated object in bytes.
CamelAwsS3ContentEncoding String The optional Content-Encoding HTTP header specifying what content encodings have been applied to the object and what decoding mechanisms must be applied in order to obtain the media-type referenced by the Content-Type field.
CamelAwsS3ContentDisposition String The optional Content-Disposition HTTP header, which specifies presentational information such as the recommended filename for the object to be saved as.
CamelAwsS3ContentControl String The optional Cache-Control HTTP header which allows the user to specify caching behavior along the HTTP request/reply chain.

Advanced AmazonS3 configuration

If your Camel Application is running behind a firewall or if you need to have more control over the AmazonS3 instance configuration, you can create your own instance:
AWSCredentials awsCredentials = new BasicAWSCredentials("myAccessKey", "mySecretKey");

ClientConfiguration clientConfiguration = new ClientConfiguration();
clientConfiguration.setProxyHost("http://myProxyHost");
clientConfiguration.setProxyPort(8080);

AmazonS3 client = new AmazonS3Client(awsCredentials, clientConfiguration);

registry.bind("client", client);
and refer to it in your Camel aws-s3 component configuration:
from("aws-s3://MyBucket?amazonS3Client=#client&delay=5000&maxMessagesPerPoll=5")
.to("mock:result");

Dependencies

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