def test_get_unlinkable_objects():
"""When an object is no longer listed in any repositories we are able to remove it from disk."""
registry_state = RegistryState()
registry_state.dispatch_entries([
[
1,
{
"type": RegistryActions.BLOB_MOUNTED,
"repository": "alpine",
"hash": "base",
},
],
[
1,
{
"type": RegistryActions.BLOB_STORED,
"hash": "base",
"location": "node1",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_MOUNTED,
"repository": "alpine",
"hash": "layer2-a",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_STORED,
"hash": "layer2-a",
"location": "node1",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_INFO,
"hash": "layer2-a",
"content_type": "application/json",
"dependencies": ["base"],
},
],
[
1,
{
"type": RegistryActions.BLOB_UNMOUNTED,
"repository": "alpine",
"hash": "base",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_UNMOUNTED,
"repository": "alpine",
"hash": "layer2-a",
},
],
])
assert registry_state.get_orphaned_objects() == {"layer2-a"}
registry_state.dispatch_entries([[
1,
{
"type": RegistryActions.MANIFEST_UNSTORED,
"hash": "layer2-a",
"location": "node1",
},
]])
assert registry_state.get_orphaned_objects() == {"base"}
registry_state.dispatch_entries([[
1,
{
"type": RegistryActions.BLOB_UNSTORED,
"hash": "base",
"location": "node1",
},
]])
assert registry_state.get_orphaned_objects() == set()
def test_get_orphaned_objects():
"""
A blob layer is published, then a manifest points at that is published. That manifest is tagged.
Later a new manifest and tag are pushed. The blob layer is not orphaned, and the old tag is just
overwritten. In this example, this leaves layer2-a as something that can be garbage collected.
"""
registry_state = RegistryState()
registry_state.dispatch_entries([
[
1,
{
"type": RegistryActions.BLOB_MOUNTED,
"repository": "alpine",
"hash": "base",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_MOUNTED,
"repository": "alpine",
"hash": "layer2-a",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_INFO,
"hash": "layer2-a",
"content_type": "application/json",
"dependencies": ["base"],
},
],
[
1,
{
"type": RegistryActions.HASH_TAGGED,
"repository": "alpine",
"tag": "3.11",
"hash": "layer2-a",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_MOUNTED,
"repository": "alpine",
"hash": "layer2-b",
},
],
[
1,
{
"type": RegistryActions.MANIFEST_INFO,
"hash": "layer2-b",
"content_type": "application/json",
"dependencies": ["base"],
},
],
[
1,
{
"type": RegistryActions.HASH_TAGGED,
"repository": "alpine",
"tag": "3.11",
"hash": "layer2-b",
},
],
])
assert registry_state.get_orphaned_objects() == {"layer2-a"}