Package dev.galasa.docker

Annotation Interface DockerVolume

@Retention(RUNTIME) @Target(FIELD) public @interface DockerVolume
Docker Volume
Annotation:
Description:
The @DockerVolume annotation provides the capability to bind or provision docker volumes. The volumes were desgined with three Docker volume use cases in mind:
  1. Mounting configuration - in this usecase any volume to be mounted contains configuration data and must not be edited by the running container, as this could affect parallelization of test running. Therefore, in the DockerVolume annotation, if a volume name is provided (aka already exists), the mount will be read only.
  2. Sharing volumes - when a volume is required for multiple containers to use to share data. This shoult not be a provided volume, so it is expected that a volume name will not be passed to the DockerVolume annotation, and the docker engine will generate a name. This volume will be tagged for later reference. Current limitation is that the config used to provision the volume must be used for all containers wanting to mount the same volume. This results in the path having to be the same in all containers.
  3. Persisting data - There may be a use case for a volume to exsist outside the life span of the test. For this I have encorparated a boolean called persist on the DockerVolume annotation. This is not indefinate, but controlled by resource management. A good default would probably be 24 hours, but can utimately be set by the user with a CPS property.
Examples:
@DockerContainerConfig( dockerVolumes = { // A read only mount, as a specific volume was requested. @DockerVolume(volumeName = config, mountPath = "/configs"), // A data volume that will persist past the life of the test @DockerVolume(mountPath = "/data", persist = true), // A sharing volume that will be cleanup post test. @DockerVolume(mountPath = "/mnt/appShare"), } ) public IDockerContainerConfig config;

  • Required Element Summary

    Required Elements
    Modifier and Type
    Required Element
    Description
    String
    mountPath
     
    String
    volumeTag
    When wanting to reference a mount that is going to be provisioned, this tag will be used.

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    String
    dockerEngineTag
    The dockerEngineTag will be used in the future so that a volume can be allocated on a specific Docker Engine type.
    String
    existingVolumeName
    By default it is expected that Galasa should provision and control the volume.
    boolean
    readOnly
    This field is used to protect this volume.

  • Element Details

    • existingVolumeName

      String existingVolumeName
      By default it is expected that Galasa should provision and control the volume. This field should only be used if beinding to an already exisitng volume.
      Returns:
      Default:
      ""

    • mountPath

      String mountPath
      Returns:
      Where to mount the volume on the container.

    • volumeTag

      String volumeTag
      When wanting to reference a mount that is going to be provisioned, this tag will be used.
      Returns:
      The tag for this volume

    • dockerEngineTag

      String dockerEngineTag
      The dockerEngineTag will be used in the future so that a volume can be allocated on a specific Docker Engine type. You would not normally need to provide a Docker Engine tag.
      Returns:
      Default:
      "PRIMARY"

    • readOnly

      boolean readOnly
      This field is used to protect this volume. If this volume is intended to be mounted to multiple containers, which you do not want editing the contents, set this to be true
      Returns:
      true if the volume is read-only, false otherwise.
      Default:
      false