def read_attribute(attr: Any, key: Union[int, str], attr_property: T.Property,
context: Context):
"""
Load a property into a python object of the appropriate type, be it a Proxy or a native python object
"""
attr_type = type(attr)
if is_builtin(attr_type):
return attr
if is_vector(attr_type):
return list(attr)
if is_matrix(attr_type):
return [list(col) for col in attr.col]
# We have tested the types that are usefully reported by the python binding, now harder work.
# These were implemented first and may be better implemented with the bl_rna property of the parent struct
# TODO flatten
if attr_type == T.bpy_prop_array:
return list(attr)
try:
context.visit_state.recursion_guard.push(attr_property.identifier)
if attr_type == T.bpy_prop_collection:
if isinstance(attr_property.fixed_type, bpy.types.ID):
from mixer.blender_data.datablock_collection_proxy import DatablockRefCollectionProxy
return DatablockRefCollectionProxy().load(attr, key, context)
elif is_soable_collection(attr_property):
from mixer.blender_data.aos_proxy import AosProxy
return AosProxy().load(attr, key, attr_property, context)
else:
from mixer.blender_data.struct_collection_proxy import StructCollectionProxy
return StructCollectionProxy.make(attr_property).load(
attr, key, attr_property, context)
# TODO merge with previous case
if isinstance(attr_property, T.CollectionProperty):
from mixer.blender_data.struct_collection_proxy import StructCollectionProxy
return StructCollectionProxy().load(attr, key, attr_property,
context)
bl_rna = attr_property.bl_rna
if bl_rna is None:
logger.warning("Not implemented: attribute %s", attr)
return None
if issubclass(attr_type, T.PropertyGroup):
from mixer.blender_data.struct_proxy import StructProxy
return StructProxy().load(attr, key, context)
if issubclass(attr_type, T.ID):
if attr.is_embedded_data:
from mixer.blender_data.datablock_proxy import DatablockProxy
return DatablockProxy.make(attr_property).load(
attr, key, context)
else:
from mixer.blender_data.datablock_ref_proxy import DatablockRefProxy
return DatablockRefProxy().load(attr, key, context)
if issubclass(attr_type, T.bpy_struct):
from mixer.blender_data.struct_proxy import StructProxy
return StructProxy().load(attr, key, context)
if attr is None and isinstance(attr_property, T.PointerProperty):
from mixer.blender_data.misc_proxies import NonePtrProxy
return NonePtrProxy()
logger.error(
f"Unsupported attribute {attr_type} {attr_property} {attr_property.fixed_type} at {context.visit_state.datablock_proxy._class_name}.{context.visit_state.path}.{attr_property.identifier}"
)
finally:
context.visit_state.recursion_guard.pop()
def update(self, diff: BpyDataCollectionDiff,
context: Context) -> Changeset:
"""
Update the proxy according to local datablock creations, removals or renames (sender side)
"""
changeset = Changeset()
# Sort so that the tests receive the messages in deterministic order for two reasons :
# - The tests compare the creation message streams received from participating Blender and there
# is not reason why they would emit creation messages
# - TestObjectRenameGeneric.test_update_object exhibits a random failure without the sort
# Scene creation messages order is then random and an update is missed when the scene that links
# the update object is not current. Setting PYTHONHASHSEED is not enough to get a deterministic test outcome.
added_names = sorted(diff.items_added, key=lambda x: x[0].name_full)
for datablock, collection_name in added_names:
name_full = datablock.name_full
logger.info("Perform update/creation for %s[%s]", collection_name,
name_full)
try:
uuid = ensure_uuid(datablock)
context.proxy_state.add_datablock(uuid, datablock)
proxy = DatablockProxy.make(datablock).load(datablock, context)
context.proxy_state.proxies[uuid] = proxy
self._data[uuid] = proxy
changeset.creations.append(proxy)
except MaxDepthExceeded as e:
logger.error(
f"MaxDepthExceeded while loading {collection_name}[{name_full}]:"
)
logger.error("... Nested attribute depth is too large: ")
logger.error(f"... {e!r}")
except Exception:
logger.error(
f"Exception while loading {collection_name}[{name_full}]:")
for line in traceback.format_exc().splitlines():
logger.error(line)
for proxy in diff.items_removed:
try:
logger.warning("Perform removal for %s", proxy)
uuid = proxy.mixer_uuid
changeset.removals.append(
(uuid, proxy.collection_name, str(proxy)))
del self._data[uuid]
del context.proxy_state.proxies[uuid]
try:
context.proxy_state.remove_datablock(uuid)
except KeyError:
logger.warning(
f"remove_datablock: n,o entry for {uuid}. Assuming removed by undo"
)
except Exception:
logger.error(
f"Exception during update/removed for proxy {proxy}) :")
for line in traceback.format_exc().splitlines():
logger.error(line)
#
# Handle spontaneous renames
#
# - local and remote are initially synced with 2 objects with uuid/name D7/A FC/B
# - local renames D7/A into B
# - D7 is actually renamed into B.001 !
# - we detect (D7 -> B.001)
# - remote proceses normally
# - local renames D7/B.001 into B
# - D7 is renamed into B
# - FC is renamed into B.001
# - we detect (D7->B, FC->B.001)
# - local result is (D7/B, FC/B.001)
# - local repeatedly renames the item named B.001 into B
# - at some point on remote, the execution of a rename command will provoke a spontaneous rename,
# resulting in a situation where remote has FC/B.001 and D7/B.002 linked to the
# Master collection and also a FC/B unlinked
#
for proxy, new_name in diff.items_renamed:
old_name = proxy.data("name")
changeset.renames.append(
(proxy.mixer_uuid, old_name, new_name, str(proxy)))
proxy._data["name"] = new_name
return changeset
def update(self, diff: BpyPropCollectionDiff,
context: Context) -> Changeset:
"""
Update the proxy according to local datablock creations, removals or renames
"""
changeset = Changeset()
# Sort so that the tests receive the messages in deterministic order. Sad but not very harmfull
added_names = sorted(diff.items_added.keys())
for name in added_names:
collection_name = diff.items_added[name]
logger.info("Perform update/creation for %s[%s]", collection_name,
name)
try:
# TODO could have a datablock directly
collection = getattr(bpy.data, collection_name)
id_ = collection.get(name)
if id_ is None:
logger.error(
"update/ request addition for %s[%s] : not found",
collection_name, name)
continue
uuid = ensure_uuid(id_)
context.proxy_state.datablocks[uuid] = id_
proxy = DatablockProxy.make(id_).load(
id_,
name,
context,
bpy_data_collection_name=collection_name)
context.proxy_state.proxies[uuid] = proxy
self._data[uuid] = proxy
changeset.creations.append(proxy)
except MaxDepthExceeded as e:
logger.error(
f"MaxDepthExceeded while loading {collection_name}[{name}]:"
)
logger.error("... Nested attribute depth is too large: ")
logger.error(f"... {e!r}")
except Exception:
logger.error(
f"Exception while loading {collection_name}[{name}]:")
for line in traceback.format_exc().splitlines():
logger.error(line)
for proxy in diff.items_removed:
try:
logger.info("Perform removal for %s", proxy)
uuid = proxy.mixer_uuid()
changeset.removals.append(
(uuid, proxy.collection_name, str(proxy)))
del self._data[uuid]
id_ = context.proxy_state.datablocks[uuid]
del context.proxy_state.proxies[uuid]
del context.proxy_state.datablocks[uuid]
except Exception:
logger.error(
f"Exception during update/removed for proxy {proxy}) :")
for line in traceback.format_exc().splitlines():
logger.error(line)
#
# Handle spontaneous renames
#
# - local and remote are initially synced with 2 objects with uuid/name D7/A FC/B
# - local renames D7/A into B
# - D7 is actually renamed into B.001 !
# - we detect (D7 -> B.001)
# - remote proceses normally
# - local renames D7/B.001 into B
# - D7 is renamed into B
# - FC is renamed into B.001
# - we detect (D7->B, FC->B.001)
# - local result is (D7/B, FC/B.001)
# - local repeatedly renames the item named B.001 into B
# - at some point on remote, the execution of a rename command will provoke a spontaneous rename,
# resulting in a situation where remote has FC/B.001 and D7/B.002 linked to the
# Master collection and also a FC/B unlinked
#
for proxy, new_name in diff.items_renamed:
uuid = proxy.mixer_uuid()
if proxy.collection[
new_name] is not context.proxy_state.datablocks[uuid]:
logger.error(
f"update rename : {proxy.collection}[{new_name}] is not {context.proxy_state.datablocks[uuid]} for {proxy}, {uuid}"
)
old_name = proxy.data("name")
changeset.renames.append(
(proxy.mixer_uuid(), old_name, new_name, str(proxy)))
proxy.rename(new_name)
return changeset