def test__get_base_module_mmds_virtual_streams(self, virtual_streams):
"""Ensure the correct results are returned without duplicates."""
init_data(data_size=1, multiple_stream_versions=True)
mmd = load_mmd(read_staged_data("testmodule_v2"))
deps = mmd.get_dependencies()[0]
new_deps = Modulemd.Dependencies()
for stream in deps.get_runtime_streams("platform"):
new_deps.add_runtime_stream("platform", stream)
new_deps.add_buildtime_stream("platform", "f29.2.0")
mmd.remove_dependencies(deps)
mmd.add_dependencies(new_deps)
make_module_in_db("platform:lp29.1.1:12:c11",
virtual_streams=virtual_streams)
mmds = get_base_module_mmds(db_session, mmd)
if virtual_streams == ["f29"]:
expected = {
"platform:f29.0.0", "platform:f29.1.0", "platform:f29.2.0",
"platform:lp29.1.1"
}
else:
expected = {
"platform:f29.0.0", "platform:f29.1.0", "platform:f29.2.0"
}
# Verify no duplicates were returned before doing set operations
assert len(mmds["ready"]) == len(expected)
# Verify the expected ones were returned
actual = set()
for mmd_ in mmds["ready"]:
actual.add("{}:{}".format(mmd_.get_module_name(),
mmd_.get_stream_name()))
assert actual == expected
def test__get_base_module_mmds_virtual_streams_only_major_versions(
self, cfg):
"""Ensure the correct results are returned without duplicates."""
init_data(data_size=1,
multiple_stream_versions=["foo28", "foo29", "foo30"])
# Mark platform:foo28 as garbage to test that it is still considered as compatible.
platform = db_session.query(models.ModuleBuild).filter_by(
name="platform", stream="foo28").first()
platform.state = "garbage"
db_session.add(platform)
db_session.commit()
mmd = load_mmd(read_staged_data("testmodule_v2"))
deps = mmd.get_dependencies()[0]
new_deps = Modulemd.Dependencies()
for stream in deps.get_runtime_streams("platform"):
new_deps.add_runtime_stream("platform", stream)
new_deps.add_buildtime_stream("platform", "foo29")
mmd.remove_dependencies(deps)
mmd.add_dependencies(new_deps)
mmds = get_base_module_mmds(db_session, mmd)
expected = {}
expected["ready"] = {"platform:foo29", "platform:foo30"}
expected["garbage"] = {"platform:foo28"}
# Verify no duplicates were returned before doing set operations
assert len(mmds) == len(expected)
for k in expected.keys():
assert len(mmds[k]) == len(expected[k])
# Verify the expected ones were returned
actual = set()
for mmd_ in mmds[k]:
actual.add("{}:{}".format(mmd_.get_module_name(),
mmd_.get_stream_name()))
assert actual == expected[k]
def get_reusable_module(module):
"""
Returns previous module build of the module `module` in case it can be
used as a source module to get the components to reuse from.
In case there is no such module, returns None.
:param module: the ModuleBuild object of module being built.
:return: ModuleBuild object which can be used for component reuse.
"""
if module.reused_module:
return module.reused_module
mmd = module.mmd()
previous_module_build = None
# The `base_mmds` will contain the list of base modules against which the possible modules
# to reuse are built. There are three options how these base modules are found:
#
# 1) The `conf.allow_only_compatible_base_modules` is False. This means that MBS should
# not try to find any compatible base modules in its DB and simply use the buildrequired
# base module as it is.
# 2) The `conf.allow_only_compatible_base_modules` is True and DBResolver is used. This means
# that MBS should try to find the compatible modules using its database.
# The `get_base_module_mmds` finds out the list of compatible modules and returns mmds of
# all of them.
# 3) The `conf.allow_only_compatible_base_modules` is True and KojiResolver is used. This
# means that MBS should *not* try to find any compatible base modules in its DB, but
# instead just query Koji using KojiResolver later to find out the module to
# reuse. The list of compatible base modules is defined by Koji tag inheritance directly
# in Koji.
# The `get_base_module_mmds` in this case returns just the buildrequired base module.
if conf.allow_only_compatible_base_modules:
log.debug("Checking for compatible base modules")
base_mmds = get_base_module_mmds(db_session, mmd)["ready"]
# Sort the base_mmds based on the stream version, higher version first.
base_mmds.sort(key=lambda mmd: models.ModuleBuild.get_stream_version(
mmd.get_stream_name(), False),
reverse=True)
else:
log.debug("Skipping the check for compatible base modules")
base_mmds = []
for br in module.buildrequires:
if br.name in conf.base_module_names:
base_mmds.append(br.mmd())
for base_mmd in base_mmds:
previous_module_build = (db_session.query(
models.ModuleBuild).filter_by(
name=mmd.get_module_name()).filter_by(
stream=mmd.get_stream_name()).filter_by(
state=models.BUILD_STATES["ready"]).filter(
models.ModuleBuild.scmurl.isnot(None)).order_by(
models.ModuleBuild.time_completed.desc()))
koji_resolver_enabled = base_mmd.get_xmd().get(
"mbs", {}).get("koji_tag_with_modules")
if koji_resolver_enabled:
# Find ModuleBuilds tagged in the Koji tag using KojiResolver.
resolver = GenericResolver.create(db_session, conf, backend="koji")
possible_modules_to_reuse = resolver.get_buildrequired_modules(
module.name, module.stream, base_mmd)
# Limit the query to these modules.
possible_module_ids = [m.id for m in possible_modules_to_reuse]
previous_module_build = previous_module_build.filter(
models.ModuleBuild.id.in_(possible_module_ids))
# Limit the query to modules sharing the same `build_context_no_bms`. That means they
# have the same buildrequirements.
previous_module_build = previous_module_build.filter_by(
build_context_no_bms=module.build_context_no_bms)
else:
# Recompute the build_context with compatible base module stream.
mbs_xmd = mmd.get_xmd()["mbs"]
if base_mmd.get_module_name() not in mbs_xmd["buildrequires"]:
previous_module_build = None
continue
mbs_xmd["buildrequires"][base_mmd.get_module_name()]["stream"] \
= base_mmd.get_stream_name()
build_context = module.calculate_build_context(
mbs_xmd["buildrequires"])
# Limit the query to find only modules sharing the same build_context.
previous_module_build = previous_module_build.filter_by(
build_context=build_context)
# If we are rebuilding with the "changed-and-after" option, then we can't reuse
# components from modules that were built more liberally
if module.rebuild_strategy == "changed-and-after":
previous_module_build = previous_module_build.filter(
models.ModuleBuild.rebuild_strategy.in_(
["all", "changed-and-after"]))
previous_module_build = previous_module_build.first()
if previous_module_build:
break
# The component can't be reused if there isn't a previous build in the done
# or ready state
if not previous_module_build:
log.info("Cannot re-use. %r is the first module build." % module)
return None
module.reused_module_id = previous_module_build.id
db_session.commit()
return previous_module_build
def get_mmds_required_by_module_recursively(db_session,
mmd,
default_streams=None,
raise_if_stream_ambigous=False):
"""
Returns the list of Module metadata objects of all modules required while
building the module defined by `mmd` module metadata. This presumes the
module metadata streams are expanded using `expand_mse_streams(...)`
method.
This method finds out latest versions of all the build-requires of
the `mmd` module and then also all contexts of these latest versions.
For each build-required name:stream:version:context module, it checks
recursively all the "requires" and finds the latest version of each
required module and also all contexts of these latest versions.
:param db_session: SQLAlchemy database session.
:param dict default_streams: Dict in {module_name: module_stream, ...} format defining
the default stream to choose for module in case when there are multiple streams to
choose from.
:param bool raise_if_stream_ambigous: When True, raises a StreamAmbigous exception in case
there are multiple streams for some dependency of module and the module name is not
defined in `default_streams`, so it is not clear which stream should be used.
:rtype: list of Modulemd metadata
:return: List of all modulemd metadata of all modules required to build
the module `mmd`.
"""
# We use dict with name:stream as a key and list with mmds as value.
# That way, we can ensure we won't have any duplicate mmds in a resulting
# list and we also don't waste resources on getting the modules we already
# handled from DB.
mmds = {}
# Get the MMDs of all compatible base modules based on the buildrequires.
base_module_mmds = get_base_module_mmds(db_session, mmd)
if not base_module_mmds["ready"]:
base_module_choices = " or ".join(conf.base_module_names)
raise UnprocessableEntity(
"None of the base module ({}) streams in the buildrequires section could be found"
.format(base_module_choices))
# Add base modules to `mmds`.
for base_module in base_module_mmds["ready"]:
ns = ":".join(
[base_module.get_module_name(),
base_module.get_stream_name()])
mmds.setdefault(ns, [])
mmds[ns].append(base_module)
# The currently submitted module build must be built only against "ready" base modules,
# but its dependencies might have been built against some old platform which is already
# EOL ("garbage" state). In order to find such old module builds, we need to include
# also EOL platform streams.
all_base_module_mmds = base_module_mmds["ready"] + base_module_mmds[
"garbage"]
# Get all the buildrequires of the module of interest.
for deps in mmd.get_dependencies():
deps_dict = deps_to_dict(deps, 'buildtime')
mmds = _get_mmds_from_requires(db_session, deps_dict, mmds, False,
default_streams,
raise_if_stream_ambigous,
all_base_module_mmds)
# Now get the requires of buildrequires recursively.
for mmd_key in list(mmds.keys()):
for mmd in mmds[mmd_key]:
for deps in mmd.get_dependencies():
deps_dict = deps_to_dict(deps, 'runtime')
mmds = _get_mmds_from_requires(db_session, deps_dict, mmds,
True, default_streams,
raise_if_stream_ambigous,
all_base_module_mmds)
# Make single list from dict of lists.
res = []
for ns, mmds_list in mmds.items():
if len(mmds_list) == 0:
raise UnprocessableEntity("Cannot find any module builds for %s" %
(ns))
res += mmds_list
return res
