Assembly is done using the provided Assemblers.

For HTTP based Riak client:

public void assemble( ModuleAssembly module )
    throws AssemblyException
{
  [...snip...]

    new RiakHttpMapEntityStoreAssembler().withConfig( config, Visibility.layer ).assemble( module );
}

For ProtocolBuffer based Riak client:

public void assemble( ModuleAssembly module )
    throws AssemblyException
{
  [...snip...]

    new RiakProtobufMapEntityStoreAssembler().withConfig( config, Visibility.layer ).assemble( module );
}

Here are the configuration properties for the HTTP based Riak client:

public interface RiakHttpEntityStoreConfiguration
        extends ConfigurationComposite
{

    /**
     * List of Riak URLs.
     *
     * Defaulted to http://127.0.0.1:8098/riak if empty.
     */
    @UseDefaults
    Property<List<String>> urls();

    /**
     * Riak Bucket where Entities state will be stored.
     *
     * Defaulted to "zest:entities".
     */
    @Optional
    Property<String> bucket();

    /**
     * Maximum total connections.
     *
     * Defaulted to 50. Use 0 for infinite number of connections.
     */
    @Optional
    Property<Integer> maxConnections();

    /**
     * The connection, socket read and pooled connection acquisition timeout in milliseconds.
     *
     * Defaulted to 0 (infinite).
     */
    @UseDefaults
    Property<Integer> timeout();

}

Here are the configuration properties for the ProtocolBuffer based Riak client:

public interface RiakProtobufEntityStoreConfiguration
    extends ConfigurationComposite
{

    /**
     * List of Riak Protocol Buffer hosts.
     *
     * Each entry can contain either an IP address / hostname
     * or an IP address / hostname followed by a column and the host's port.
     *
     * Defaulted to 127.0.0.1 if empty.
     */
    @UseDefaults
    Property<List<String>> hosts();

    /**
     * Riak Bucket where Entities state will be stored.
     *
     * Defaulted to "zest:entities".
     */
    @Optional
    Property<String> bucket();

    /**
     * Maximum total connections.
     *
     * Defaulted to 50. Use 0 for infinite number of connections.
     */
    @Optional
    Property<Integer> maxConnections();

    /**
     * The connection timeout in milliseconds.
     *
     * Defaulted to 1000.
     */
    @Optional
    Property<Integer> connectionTimeout();

    /**
     * Idle connection time to live in milliseconds.
     *
     * Defaulted to 1000.
     */
    @Optional
    Property<Integer> idleConnectionTTL();

    /**
     * Max pool size.
     *
     * Defaulted to 0 (unlimited).
     */
    @UseDefaults
    Property<Integer> maxPoolSize();

    /**
     * Initial pool size.
     *
     * Defaulted to 0.
     */
    @UseDefaults
    Property<Integer> initialPoolSize();

    /**
     * Socket buffer size in KB.
     *
     * Defaulted to 16.
     */
    @Optional
    Property<Integer> socketBufferSizeKb();

}