def test_keep_dependencies(cli, datafiles):
project = str(datafiles)
element_path = "elements"
# Skip this test if we do not have support for subsecond precision mtimes
#
# The artifact expiry logic relies on mtime changes, in real life second precision
# should be enough for this to work almost all the time, but test cases happen very
# quickly, resulting in all artifacts having the same mtime.
#
# This test requires subsecond mtime to be reliable.
#
if not have_subsecond_mtime(project):
pytest.skip(
"Filesystem does not support subsecond mtime precision: {}".format(
project))
cli.configure({"cache": {"quota": 10000000}})
# Create a pretty big dependency
create_element_size("dependency.bst", project, element_path, [], 5000000)
res = cli.run(project=project, args=["build", "dependency.bst"])
res.assert_success()
# Now create some other unrelated artifact
create_element_size("unrelated.bst", project, element_path, [], 4000000)
res = cli.run(project=project, args=["build", "unrelated.bst"])
res.assert_success()
# Check that the correct element remains in the cache
states = cli.get_element_states(project,
["dependency.bst", "unrelated.bst"])
assert states["dependency.bst"] == "cached"
assert states["unrelated.bst"] == "cached"
# We try to build an element which depends on the LRU artifact,
# and could therefore fail if we didn't make sure dependencies
# aren't removed.
#
# Since some artifact caches may implement weak cache keys by
# duplicating artifacts (bad!) we need to make this equal in size
# or smaller than half the size of its dependencies.
#
create_element_size("target.bst", project, element_path,
["dependency.bst"], 2000000)
res = cli.run(project=project, args=["build", "target.bst"])
res.assert_success()
states = cli.get_element_states(project, ["target.bst", "unrelated.bst"])
assert states["target.bst"] == "cached"
assert states["dependency.bst"] == "cached"
assert states["unrelated.bst"] != "cached"
def test_never_delete_required(cli, datafiles):
project = str(datafiles)
element_path = "elements"
# Skip this test if we do not have support for subsecond precision mtimes
#
# The artifact expiry logic relies on mtime changes, in real life second precision
# should be enough for this to work almost all the time, but test cases happen very
# quickly, resulting in all artifacts having the same mtime.
#
# This test requires subsecond mtime to be reliable.
#
if not have_subsecond_mtime(project):
pytest.skip(
"Filesystem does not support subsecond mtime precision: {}".format(
project))
cli.configure({
"cache": {
"quota": 10000000
},
"scheduler": {
"fetchers": 1,
"builders": 1
}
})
# Create a linear build tree
create_element_size("dep1.bst", project, element_path, [], 8000000)
create_element_size("dep2.bst", project, element_path, ["dep1.bst"],
8000000)
create_element_size("dep3.bst", project, element_path, ["dep2.bst"],
8000000)
create_element_size("target.bst", project, element_path, ["dep3.bst"],
8000000)
# Build dep1.bst, which should fit into the cache.
res = cli.run(project=project, args=["build", "dep1.bst"])
res.assert_success()
# We try to build this pipeline, but it's too big for the
# cache. Since all elements are required, the build should fail.
res = cli.run(project=project, args=["build", "target.bst"])
res.assert_main_error(ErrorDomain.STREAM, None)
res.assert_task_error(ErrorDomain.CAS, "cache-too-full")
states = cli.get_element_states(project, ["target.bst"])
assert states["dep1.bst"] == "cached"
assert states["dep2.bst"] != "cached"
assert states["dep3.bst"] != "cached"
assert states["target.bst"] != "cached"
def test_no_needless_overwrite(cli, tmpdir, datafiles):
project = os.path.join(datafiles.dirname, datafiles.basename)
dev_files_path = os.path.join(project, "files", "dev-files")
element_path = os.path.join(project, "elements")
target = "track-test-target.bst"
# Skip this test if we do not have support for subsecond precision mtimes
#
if not have_subsecond_mtime(project):
pytest.skip(
"Filesystem does not support subsecond mtime precision: {}".format(
project))
# Create our repo object of the given source type with
# the dev files, and then collect the initial ref.
#
repo = Git(str(tmpdir))
repo.create(dev_files_path)
# Write out our test target and assert it exists
generate_element(repo, os.path.join(element_path, target))
path_to_target = os.path.join(element_path, target)
assert os.path.exists(path_to_target)
creation_mtime = os.path.getmtime(path_to_target)
# Assert tracking is needed
states = cli.get_element_states(project, [target])
assert states[target] == "no reference"
# Perform the track
result = cli.run(project=project, args=["source", "track", target])
result.assert_success()
track1_mtime = os.path.getmtime(path_to_target)
assert creation_mtime != track1_mtime
# Now (needlessly) track again
result = cli.run(project=project, args=["source", "track", target])
result.assert_success()
track2_mtime = os.path.getmtime(path_to_target)
assert track1_mtime == track2_mtime
def test_artifact_expires(cli, datafiles):
project = str(datafiles)
element_path = "elements"
# Skip this test if we do not have support for subsecond precision mtimes
#
# The artifact expiry logic relies on mtime changes, in real life second precision
# should be enough for this to work almost all the time, but test cases happen very
# quickly, resulting in all artifacts having the same mtime.
#
# This test requires subsecond mtime to be reliable.
#
if not have_subsecond_mtime(project):
pytest.skip(
"Filesystem does not support subsecond mtime precision: {}".format(
project))
cli.configure({"cache": {
"quota": 10000000,
}})
# Create an element that uses almost the entire cache (an empty
# ostree cache starts at about ~10KiB, so we need a bit of a
# buffer)
create_element_size("target.bst", project, element_path, [], 6000000)
res = cli.run(project=project, args=["build", "target.bst"])
res.assert_success()
assert cli.get_element_state(project, "target.bst") == "cached"
# Our cache should now be almost full. Let's create another
# artifact and see if we can cause buildstream to delete the old
# one.
create_element_size("target2.bst", project, element_path, [], 6000000)
res = cli.run(project=project, args=["build", "target2.bst"])
res.assert_success()
# Check that the correct element remains in the cache
states = cli.get_element_states(project, ["target.bst", "target2.bst"])
assert states["target.bst"] != "cached"
assert states["target2.bst"] == "cached"
def test_move_to_empty_dir_set_mtime(src, tmp_path):
# Skip this test if we do not have support for subsecond precision mtimes
#
if not have_subsecond_mtime(str(tmp_path)):
pytest.skip(
"Filesystem does not support subsecond mtime precision: {}".format(
str(tmp_path)))
dst = tmp_path.joinpath("dst")
move_atomic(src, dst)
assert dst.joinpath("test").exists()
_dst = str(dst)
# set the mtime via stamp
timestamp1 = "2020-01-08T11:05:50.832123Z"
_set_file_mtime(_dst, _parse_timestamp(timestamp1))
assert timestamp1 == _get_file_mtimestamp(_dst)
# reset the mtime using an offset stamp
timestamp2 = "2010-02-12T12:05:50.832123+01:00"
_set_file_mtime(_dst, _parse_timestamp(timestamp2))
assert _get_file_mtimestamp(_dst) == "2010-02-12T11:05:50.832123Z"
def test_artifact_too_large(cli, datafiles, size):
project = str(datafiles)
element_path = "elements"
# Skip this test if we do not have support for subsecond precision mtimes
#
# The artifact expiry logic relies on mtime changes, in real life second precision
# should be enough for this to work almost all the time, but test cases happen very
# quickly, resulting in all artifacts having the same mtime.
#
# This test requires subsecond mtime to be reliable.
#
if not have_subsecond_mtime(project):
pytest.skip(
"Filesystem does not support subsecond mtime precision: {}".format(
project))
cli.configure({"cache": {"quota": 400000}})
# Create an element whose artifact is too large
create_element_size("target.bst", project, element_path, [], size)
res = cli.run(project=project, args=["build", "target.bst"])
res.assert_main_error(ErrorDomain.STREAM, None)
res.assert_task_error(ErrorDomain.CAS, "cache-too-full")
def _import_test(tmpdir,
original,
overlay,
generator_function,
verify_contents=False):
# Skip this test if we do not have support for subsecond precision mtimes
#
if not have_subsecond_mtime(str(tmpdir)):
pytest.skip(
"Filesystem does not support subsecond mtime precision: {}".format(
str(tmpdir)))
cas_cache = CASCache(tmpdir, log_directory=os.path.join(tmpdir, "logs"))
try:
# Create some fake content
generator_function(original, tmpdir)
if original != overlay:
generator_function(overlay, tmpdir)
d = create_new_casdir(original, cas_cache, tmpdir)
duplicate_cas = create_new_casdir(original, cas_cache, tmpdir)
assert duplicate_cas._get_digest().hash == d._get_digest().hash
d2 = create_new_casdir(overlay, cas_cache, tmpdir)
d._import_files_internal(d2, properties=["mtime"])
export_dir = os.path.join(tmpdir,
"output-{}-{}".format(original, overlay))
roundtrip_dir = os.path.join(
tmpdir, "roundtrip-{}-{}".format(original, overlay))
d2._export_files(roundtrip_dir)
d._export_files(export_dir)
if verify_contents:
for item in root_filesets[overlay - 1]:
(path, typename, content) = item
realpath = resolve_symlinks(path, export_dir)
if typename == "F":
if os.path.isdir(realpath) and directory_not_empty(
realpath):
# The file should not have overwritten the directory in this case.
pass
else:
assert os.path.isfile(
realpath
), "{} did not exist in the combined virtual directory".format(
path)
assert file_contents_are(realpath, content)
roundtrip = os.path.join(roundtrip_dir, path)
assert os.path.getmtime(roundtrip) == MTIME
assert os.path.getmtime(realpath) == MTIME
elif typename == "S":
if os.path.isdir(realpath) and directory_not_empty(
realpath):
# The symlink should not have overwritten the directory in this case.
pass
else:
assert os.path.islink(realpath)
assert os.readlink(realpath) == content
elif typename == "D":
# We can't do any more tests than this because it
# depends on things present in the original. Blank
# directories here will be ignored and the original
# left in place.
assert os.path.lexists(realpath)
# Now do the same thing with filebaseddirectories and check the contents match
duplicate_cas._import_files_internal(roundtrip_dir,
properties=["mtime"])
assert duplicate_cas._get_digest().hash == d._get_digest().hash
finally:
cas_cache.release_resources()