OpenStack Swift

Since Camel 2.19

Only producer is supported

The Openstack Swift component allows messages to be sent to an OpenStack object storage services.

Dependencies

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

pom.xml

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

where ${camel-version} must be replaced by the actual version of Camel.

URI Format

openstack-swift://hosturl[?options]

Configuring Options

Camel components are configured on two separate levels:

  • component level

  • endpoint level

Configuring Component Options

The component level is the highest level which holds general and common configurations that are inherited by the endpoints. For example a component may have security settings, credentials for authentication, urls for network connection and so forth.

Some components only have a few options, and others may have many. Because components typically have pre configured defaults that are commonly used, then you may often only need to configure a few options on a component; or none at all.

Configuring components can be done with the Component DSL, in a configuration file (application.properties|yaml), or directly with Java code.

Configuring Endpoint Options

Where you find yourself configuring the most is on endpoints, as endpoints often have many options, which allows you to configure what you need the endpoint to do. The options are also categorized into whether the endpoint is used as consumer (from) or as a producer (to), or used for both.

Configuring endpoints is most often done directly in the endpoint URI as path and query parameters. You can also use the Endpoint DSL and DataFormat DSL as a type safe way of configuring endpoints and data formats in Java.

A good practice when configuring options is to use Property Placeholders, which allows to not hardcode urls, port numbers, sensitive information, and other settings. In other words placeholders allows to externalize the configuration from your code, and gives more flexibility and reuse.

The following two sections lists all the options, firstly for the component followed by the endpoint.

Component Options

The OpenStack Swift component supports 2 options, which are listed below.

Name Description Default Type

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

autowiredEnabled (advanced)

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

boolean

Endpoint Options

The OpenStack Swift endpoint is configured using URI syntax:

openstack-swift:host

with the following path and query parameters:

Path Parameters (1 parameters)

Name Description Default Type

host (producer)

Required OpenStack host url.

String

Query Parameters (9 parameters)

Name Description Default Type

apiVersion (producer)

OpenStack API version.

Enum values:

  • V2

  • V3

V3

String

config (producer)

OpenStack configuration.

Config

domain (producer)

Authentication domain.

default

String

operation (producer)

The operation to do.

String

password (producer)

Required OpenStack password.

String

project (producer)

Required The project ID.

String

subsystem (producer)

Required OpenStack Swift subsystem.

Enum values:

  • objects

  • containers

String

username (producer)

Required OpenStack username.

String

lazyStartProducer (producer (advanced))

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

Message Headers

The OpenStack Swift component supports 14 message header(s), which is/are listed below:

Name Description Default Type

containerName (object container)

Constant: CONTAINER_NAME

The container name.

String

objectName (object)

Constant: OBJECT_NAME

The object name.

String

xref:#_endpoint_header_X-Container-Meta-X-Container-Meta- (container)

Constant: CONTAINER_METADATA_PREFIX

Container metadata prefix.

Map

X-Versions-Location (container)

Constant: VERSIONS_LOCATION

Versions location.

String

X-Container-Read (container)

Constant: CONTAINER_READ

ACL - container read.

String

X-Container-Write (container)

Constant: CONTAINER_WRITE

ACL - container write.

String

limit (container)

Constant: LIMIT

List options - limit.

Integer

marker (container)

Constant: MARKER

List options - marker.

String

end_marker (container)

Constant: END_MARKER

List options - end marker.

String

delimiter (container)

Constant: DELIMITER

List options - delimiter.

Character

path (container object)

Constant: PATH

The path.

String

operation (producer)

Constant: OPERATION

The operation to perform.

String

ID (producer)

Constant: ID

The ID.

String

name (producer)

Constant: NAME

The name.

String

Usage

You can use following settings for each subsystem:

containers

Operations you can perform with the Container producer

Operation Description

create

Create new container.

get

Get the container.

getAll

Get all containers.

update

Update the container.

delete

Delete the container.

getMetadata

Get metadata.

createUpdateMetadata

Create/update metadata.

deleteMetadata

Delete metadata.

If you need more precise container settings you can create new object of the type org.openstack4j.model.storage.object.options.CreateUpdateContainerOptions (in case of create or update operation) or org.openstack4j.model.storage.object.options.ContainerListOptions for listing containers and send in the message body.

objects

Operations you can perform with the Object producer

Operation Description

create

Create new object.

get

Get the object.

getAll

Get all objects.

update

Get update the object.

delete

Delete the object.

getMetadata

Get metadata.

createUpdateMetadata

Create/update metadata.