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Story #2993

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As a user, I can upload a docker_manifest_list so that I can remove arches from a manifest list without performing a sync

Added by rmcgover over 6 years ago. Updated almost 5 years ago.

Status:
CLOSED - CURRENTRELEASE
Priority:
Normal
Start date:
Due date:
% Done:

100%

Estimated time:
Platform Release:
2.15.0
Target Release - Docker:
Groomed:
Yes
Sprint Candidate:
Yes
Tags:
Pulp 2
Sprint:
Sprint 28
Quarter:

Description

I would like to be able to use Pulp's upload API to upload units of type docker_manifest_list.

Our use-case for this is removing selected arches from a manifest list.

For example: right now we can sync from a docker registry into Pulp and end up with a docker_manifest_list unit with content as in this sample:

{
  "schemaVersion": 2,
  "mediaType": "application/vnd.docker.distribution.manifest.list.v2+json",
  "manifests": [
    {
      "mediaType": "application/vnd.docker.image.manifest.v2+json",
      "size": 7143,
      "digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f",
      "platform": {
        "architecture": "ppc64le",
        "os": "linux",
      }
    },
    {
      "mediaType": "application/vnd.docker.image.manifest.v2+json",
      "size": 7143,
      "digest": "sha256:49ae93732fcf8d63fe1cce759664982dbd5b23161f007dba8561862adc96d063",
      "platform": {
        "architecture": "aarch64",
        "os": "linux",
      }
    },
    {
      "mediaType": "application/vnd.docker.image.manifest.v2+json",
      "size": 7682,
      "digest": "sha256:5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270",
      "platform": {
        "architecture": "amd64",
        "os": "linux",
        "features": [
          "sse4"
        ]
      }
    }
  ]
}

The source used for sync included three arches. But, our requirement is that we want to be able to choose any combination of those arches for publish, thus we may need to create a new manifest list.

To get the new manifest list into Pulp, what I would like to do is:

  • Download manifest list from Pulp
  • Make a new manifest list by removing the items from "manifests" with an unwanted architecture
  • Upload modified manifest list to Pulp
  • Now I can remove the original manifest list and manifests for the arches I don't want, leaving only desired arches

If the upload isn't possible then we're instead forced to do a slower and more complicated process to get the same result indirectly: create a new manifest list, push it to a docker registry, ask Pulp to sync from that registry.


Files

automate_upload.sh (1.03 KB) automate_upload.sh For QE: A script I used to test the REST API, amacdona@redhat.com, 11/14/2017 06:08 AM

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