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AdithyaSK HF Staff
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Fix the following issue:

Problem Statement

I'm trying to spin up containers on my Flocker cluster via the HTTP API but I can't find a way to do it — the configuration endpoints let me create datasets but there's nothing for containers as far as I can tell. Can we get a POST under /v1/configuration/containers so I can declare a container (host + name + image) the same way I declare datasets? Also it'd be nice if it actually rejected duplicate names instead of silently letting two containers share one.

One small thing while you're in there: the duplicate-dataset_id 409 returns its error under a message key, but every other error I've hit uses description — kinda annoying to special-case in my client, would be great to make that consistent.

Expected outcomes

  • Container configuration creation:

    • A POST to /v1/configuration/containers with a JSON body containing host, name, and image creates a container entry in the cluster configuration.
    • A successful container creation returns HTTP 201 Created.
    • The successful response body includes the same host, name, and image values supplied by the client.
    • The created container is persisted in the configuration for the specified host.
  • Duplicate container names:

    • Creating a container with a name that is already used by any configured container is rejected.
    • Duplicate container-name requests return HTTP 409 Conflict.
    • Duplicate container-name error responses use a description field that explains the duplicate-name conflict.
  • Dataset conflict error format:

    • Duplicate dataset_id configuration requests continue to return HTTP 409 Conflict.
    • The duplicate-dataset_id conflict response uses a description field rather than a message field.

Implementation notes

  • Match the existing HTTP API conventions in this repository for routing, JSON request/response validation, persistence, and error formatting.
  • The internal data structures, helper functions, and exact placement of validation or collision checks are implementation details; preserve the externally observable API behavior described above.