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The value 3 is the length of the "ci-" prefix, which is present in the items returned by get_registry_images() but not in those returned by get_dockerfiles(). Signed-off-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Beraldo Leal <bleal@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
79 lines
2.2 KiB
Python
79 lines
2.2 KiB
Python
import json
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import pathlib
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import urllib.request
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import urllib.parse
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from typing import Dict, List
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def get_registry_uri(namespace: str,
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gitlab_uri: str = "https://gitlab.com") -> str:
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"""
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Construct a v4 API URI pointing the namespaced project's image registry.
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:param namespace: GitLab project namespace, e.g. "libvirt/libvirt"
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:param gitlab_uri: GitLab base URI, can be a private deployment
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:param api_version: GitLab REST API version number
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:return: URI pointing to a namespaced project's image registry
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"""
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# this converts something like "libvirt/libvirt" to "libvirt%2Flibvirt"
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namespace_urlenc = urllib.parse.quote_plus(namespace)
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project_uri = f"{gitlab_uri}/api/v4/projects/{namespace_urlenc}"
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uri = project_uri + "/registry/repositories"
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return uri
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def get_registry_images(uri: str) -> List[Dict]:
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"""
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List all container images that are currently available in the given GitLab
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project.
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:param uri: URI pointing to a GitLab instance's image registry
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:return: list of container image names
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"""
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r = urllib.request.urlopen(uri + "?per_page=100")
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# read the HTTP response and load the JSON part of it
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return json.loads(r.read().decode())
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def get_dockerfiles(base_dir) -> List:
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"""
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List all container dockerfiles in the local directory.
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:return: list of dockerfile names
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"""
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dkrs = []
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d = pathlib.Path(base_dir, "containers")
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for f in d.iterdir():
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if f.suffix == ".Dockerfile":
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dkrs.append(f.stem)
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return dkrs
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def get_registry_stale_images(registry_uri: str, base_dir: str) -> Dict[str, int]:
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"""
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Check the GitLab image registry for images that we no longer support and
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which should be deleted.
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:param uri: URI pointing to a GitLab instance's image registry
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:param base_dir: local repository base directory
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:return: dictionary formatted as: {<gitlab_image_name>: <gitlab_image_id>}
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"""
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dockerfiles = get_dockerfiles(base_dir)
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images = get_registry_images(registry_uri)
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name_prefix = "ci-"
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stale_images = {}
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for img in images:
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if img["name"][len(name_prefix):] not in dockerfiles:
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stale_images[img["name"]] = img["id"]
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return stale_images
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