Display and Examine Component Versions

List Component Versions

To show the list of all component versions of a specific component stored in an OCM repository or CTF archive (which technically is also an OCM repository), the ocm get component-version command can be used. Only specify the component name and skip the version.

In the example below, we use the OCM component ocm.software/toi/demo/helmdemo from the OCM repository ghcr.io/open-component-model/ocm.

Notice the format of the specified component, which has a prefix defining the OCM repository followed by a double slash // and then the component name.

ocm get cv ghcr.io/open-component-model/ocm//ocm.software/toi/demo/helmdemo
 COMPONENT                      │ VERSION     │ PROVIDER
────────────────────────────────┼─────────────┼──────────────
 ocm.software/toi/demo/helmdemo │ 0.21.0      │ ocm.software
                                │ 0.21.0-rc.1 │
                                │ 0.20.1      │
                                │ 0.20.1-rc.1 │
                                │ 0.20.0      │
                                │ 0.20.0-rc.1 │
                                │ 0.19.1      │
...

Get Component Versions

To see just a specific component version, add a version to the component name:

ocm get cv ghcr.io/open-component-model/ocm//ocm.software/toi/demo/helmdemo:0.21.0
 COMPONENT                      │ VERSION │ PROVIDER
────────────────────────────────┼─────────┼──────────────
 ocm.software/toi/demo/helmdemo │ 0.21.0  │ ocm.software

To get the component descriptor of that component version, use the output format option -o yaml (the output below has been shortened for better readability, digests have been removed and only the image and chart resources are listed).

ocm get cv ghcr.io/open-component-model/ocm//ocm.software/toi/demo/helmdemo:0.21.0 -o yaml
component:
  componentReferences:
  - componentName: ocm.software/toi/installers/helminstaller
    digest:
      ...
    name: installer
    version: 0.21.0
  creationTime: "2025-03-06T07:37:08Z"
  name: ocm.software/toi/demo/helmdemo
  provider: ocm.software
  repositoryContexts:
  - baseUrl: ghcr.io
    componentNameMapping: urlPath
    subPath: open-component-model/ocm
    type: OCIRegistry
  resources:
   ...
  - access:
      imageReference: ghcr.io/open-component-model/ocm/google-containers/echoserver:1.10@sha256:cb5c1bddd1b5665e1867a7fa1b5fa843a47ee433bbb75d4293888b71def53229
      type: ociArtifact
    digest:
      ...
    name: image
    relation: external
    type: ociImage
    version: "1.0"
  - access:
      imageReference: ghcr.io/open-component-model/ocm/ocm.software/toi/demo/helmdemo/echoserver:0.1.0@sha256:8ab41f82c9a28535f1add8ffbcd6d625a19ece63c4e921f9c8358820019d1ec2
      type: ociArtifact
    digest:
      ...
    name: chart
    relation: local
    type: helmChart
    version: 0.21.0
...

In the example above, ghcr.io/open-component-model/ocm is the OCM repository, whereas ocm.software/toi/demo/helmdemo is the component stored in this component repository and 0.21.0 the component’s version.

Under Construction

The --recursive option is currently implemented from scratch and not available yet. Stay tuned for updates!

With the option --recursive, it is possible to show the complete component version, including the component versions it references.

ocm get cv ghcr.io/open-component-model/ocm//ocm.software/toi/demo/helmdemo:0.21.0 --recursive
  REFERENCEPATH                         COMPONENT                                 VERSION PROVIDER     IDENTITY
                                        ocm.software/toi/demo/helmdemo            0.21.0  ocm.software
  ocm.software/toi/demo/helmdemo:0.21.0 ocm.software/toi/installers/helminstaller 0.21.0  ocm.software "name"="installer"

Under Construction

The -o tree option is currently implemented from scratch and not available yet. Stay tuned for updates!

To get a tree view, add the option -o tree:

ocm get cv ghcr.io/open-component-model/ocm//ocm.software/toi/demo/helmdemo:0.21.0 --recursive -o tree
  NESTING COMPONENT                                 VERSION PROVIDER     IDENTITY
  └─ ⊗    ocm.software/toi/demo/helmdemo            0.21.0  ocm.software
     └─   ocm.software/toi/installers/helminstaller 0.21.0  ocm.software "name"="installer"

As mentioned before, a CTF archive itself is an OCM repository, so we can execute the same commands on a CTF archive. So, let’s get the information about the component github.com/acme.org/helloworld we created in the previous step and that we stored in the CTF archive /tmp/helloworld/ctf-hello-world:

ocm get cv /tmp/helloworld/transport-archive//github.com/acme.org/helloworld:1.0.0
 COMPONENT                      │ VERSION │ PROVIDER
────────────────────────────────┼─────────┼──────────
 github.com/acme.org/helloworld │ 1.0.0   │ acme.org

List Resources of a Component Version

Under Construction

Listing resources and sources most likely will become part of the ocm get cv command and become an additional option. Stay tuned for updates!

To list the resources found in a component version tree, the command ocm get resources can be used:

ocm get resources ghcr.io/open-component-model/ocm//ocm.software/toi/demo/helmdemo:0.12.0 --recursive -o tree
COMPONENT                                       NAME           VERSION IDENTITY TYPE        RELATION
└─ ocm.software/toi/demo/helmdemo                              0.21.0
   ├─                                           chart          0.21.0           helmChart   local
   ├─                                           config-example 0.21.0           yaml        local
   ├─                                           creds-example  0.21.0           yaml        local
   ├─                                           image          1.0              ociImage    external
   ├─                                           package        0.21.0           toiPackage  local
   └─ ocm.software/toi/installers/helminstaller installer      0.21.0
      ├─                                        toiexecutor    0.21.0           toiExecutor local
      └─                                        toiimage       0.21.0           ociImage    local
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