references

Usage#

ocm get references [<options>]  <component> {<name> { <key>=<value> }}

Options#

  -c, --constraints constraints   version constraint
  -h, --help                      help for references
      --latest                    restrict component versions to latest
      --lookup stringArray        repository name or spec for closure lookup fallback
  -o, --output string             output mode (JSON, json, tree, wide, yaml)
  -r, --recursive                 follow component reference nesting
      --repo string               repository name or spec
  -s, --sort stringArray          sort fields

Description#

Get references of a component version. References are specified by identities. An identity consists of a name argument followed by optional <key>=<value> arguments.

If the option –constraints is given, and no version is specified for a component, only versions matching the given version constraints (semver https://github.com/Masterminds/semver) are selected. With –latest only the latest matching versions will be selected.

If the –repo option is specified, the given names are interpreted relative to the specified repository using the syntax

<component>[:<version>]

If no –repo option is specified the given names are interpreted as located OCM component version references:

[<repo type>::]<host>[:<port>][/<base path>]//<component>[:<version>]

Additionally there is a variant to denote common transport archives and general repository specifications

[<repo type>::]<filepath>|<spec json>[//<component>[:<version>]]

The –repo option takes an OCM repository specification:

[<repo type>::]<configured name>|<file path>|<spec json>

For the Common Transport Format the types directory, tar or tgz is possible.

Using the JSON variant any repository types supported by the linked library can be used:

Dedicated OCM repository types:

• ComponentArchive: v1

OCI Repository types (using standard component repository to OCI mapping):

• CommonTransportFormat: v1
• OCIRegistry: v1
• oci: v1
• ociRegistry

With the option –recursive the complete reference tree of a component reference is traversed.

If a component lookup for building a reference closure is required the –lookup option can be used to specify a fallback lookup repository. By default, the component versions are searched in the repository holding the component version for which the closure is determined. For Component Archives this is never possible, because it only contains a single component version. Therefore, in this scenario this option must always be specified to be able to follow component references.

With the option –output the output mode can be selected. The following modes are supported:

• (default)
• JSON
• json
• tree
• wide
• yaml

See Also#

• ocm get — Get information about artifacts and components