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test_snapshot.py
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# Copyright (C) 2018-2020 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information
from hypothesis import given
import pytest
from swh.model.hypothesis_strategies import snapshots, branch_names, branch_targets
from swh.model.identifiers import snapshot_identifier, identifier_to_bytes
from swh.model.model import Origin, OriginVisit, OriginVisitStatus, Snapshot
from swh.storage.algos.snapshot import snapshot_get_all_branches, snapshot_get_latest
from swh.storage.utils import now
from swh.storage.tests.storage_data import data
@pytest.fixture
def swh_storage_backend_config():
yield {
"cls": "memory",
"journal_writer": None,
}
@given(snapshot=snapshots(min_size=0, max_size=10, only_objects=False))
def test_snapshot_small(swh_storage, snapshot): # noqa
snapshot = snapshot.to_dict()
swh_storage.snapshot_add([snapshot])
returned_snapshot = snapshot_get_all_branches(swh_storage, snapshot["id"])
assert snapshot == returned_snapshot
@given(branch_name=branch_names(), branch_target=branch_targets(only_objects=True))
def test_snapshot_large(swh_storage, branch_name, branch_target): # noqa
branch_target = branch_target.to_dict()
snapshot = {
"branches": {b"%s%05d" % (branch_name, i): branch_target for i in range(10000)}
}
snapshot["id"] = identifier_to_bytes(snapshot_identifier(snapshot))
swh_storage.snapshot_add([snapshot])
returned_snapshot = snapshot_get_all_branches(swh_storage, snapshot["id"])
assert snapshot == returned_snapshot
def test_snapshot_get_latest_none(swh_storage):
"""Retrieve latest snapshot on unknown origin or origin without snapshot should
yield no result
"""
# unknown origin so None
assert snapshot_get_latest(swh_storage, "unknown-origin") is None
# no snapshot on origin visit so None
origin = Origin.from_dict(data.origin)
swh_storage.origin_add_one(origin)
swh_storage.origin_visit_add(
[OriginVisit(origin=origin.url, date=data.date_visit1, type=data.type_visit1,)]
)
assert snapshot_get_latest(swh_storage, origin.url) is None
ov1 = swh_storage.origin_visit_get_latest(origin.url)
assert ov1 is not None
visit_id = ov1["visit"]
# visit references a snapshot but the snapshot does not exist in backend for some
# reason
complete_snapshot = Snapshot.from_dict(data.complete_snapshot)
swh_storage.origin_visit_status_add(
[
OriginVisitStatus(
origin=origin.url,
visit=visit_id,
date=data.date_visit2,
status="partial",
snapshot=complete_snapshot.id,
)
]
)
# so we do not find it
assert snapshot_get_latest(swh_storage, origin.url) is None
assert snapshot_get_latest(swh_storage, origin.url, branches_count=1) is None
def test_snapshot_get_latest(swh_storage):
origin = Origin.from_dict(data.origin)
swh_storage.origin_add_one(origin)
visit1 = OriginVisit(
origin=origin.url, date=data.date_visit1, type=data.type_visit1,
)
swh_storage.origin_visit_add([visit1])
ov1 = swh_storage.origin_visit_get_latest(origin.url)
visit_id = ov1["visit"]
# Add snapshot to visit1, latest snapshot = visit 1 snapshot
complete_snapshot = Snapshot.from_dict(data.complete_snapshot)
swh_storage.snapshot_add([complete_snapshot])
swh_storage.origin_visit_status_add(
[
OriginVisitStatus(
origin=origin.url,
visit=visit_id,
date=data.date_visit2,
status="partial",
snapshot=None,
)
]
)
assert data.date_visit1 < data.date_visit2
# no snapshot associated to the visit, so None
actual_snapshot = snapshot_get_latest(
swh_storage, origin.url, allowed_statuses=["partial"]
)
assert actual_snapshot is None
date_now = now()
assert data.date_visit2 < date_now
swh_storage.origin_visit_status_add(
[
OriginVisitStatus(
origin=origin.url,
visit=visit_id,
date=date_now,
status="full",
snapshot=complete_snapshot.id,
)
]
)
swh_storage.origin_visit_add(
[OriginVisit(origin=origin.url, date=now(), type=data.type_visit1,)]
)
actual_snapshot = snapshot_get_latest(swh_storage, origin.url)
assert actual_snapshot is not None
assert actual_snapshot == complete_snapshot
actual_snapshot = snapshot_get_latest(swh_storage, origin.url, branches_count=1)
assert actual_snapshot is not None
assert actual_snapshot.id == complete_snapshot.id
assert len(actual_snapshot.branches.values()) == 1
with pytest.raises(ValueError, match="branches_count must be a positive integer"):
snapshot_get_latest(swh_storage, origin.url, branches_count="something-wrong")

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