Bumped version to 1.7.2

Blender 2.78c is shipped with a version of the io_blend_utils module that
doesn't have a `pythonpath()` function yet, and that's bundled with an
older version of BAM. To work around this, we ship BAM as wheel, and detect
whether this version is needed to run.

As an added bonus, Blender 2.78c can now also use the file exclude filter
for Flamenco. The `bam_supports_exclude_option()` function is thus no
longer necessary.

CHANGELOG.md

@@ -1,6 +1,11 @@
 # Blender Cloud changelog
 
 
+## Version 1.7.2 (2017-06-22)
+
+- Fixed compatibility with Blender 2.78c.
+
+
 ## Version 1.7.1 (2017-06-13)
 
 - Fixed asyncio issues on Windows

blender_cloud/__init__.py

@@ -21,7 +21,7 @@
 bl_info = {
     'name': 'Blender Cloud',
     "author": "Sybren A. Stüvel, Francesco Siddi, Inês Almeida, Antony Riakiotakis",
-    'version': (1, 7, 1),
+    'version': (1, 7, 2),
     'blender': (2, 77, 0),
     'location': 'Addon Preferences panel, and Ctrl+Shift+Alt+A anywhere for texture browser',
     'description': 'Texture library browser and Blender Sync. Requires the Blender ID addon '

blender_cloud/blender.py

@@ -32,8 +32,7 @@ import rna_prop_ui
 from . import pillar, async_loop, flamenco
 from .utils import pyside_cache, redraw
 
-PILLAR_WEB_SERVER_URL = 'https://cloud.blender.org/'
+PILLAR_WEB_SERVER_URL = os.environ.get('BCLOUD_SERVER', 'https://cloud.blender.org/')
-# PILLAR_WEB_SERVER_URL = 'http://pillar-web:5001/'
 PILLAR_SERVER_URL = '%sapi/' % PILLAR_WEB_SERVER_URL
 
 ADDON_NAME = 'blender_cloud'
@@ -462,16 +461,7 @@ class BlenderCloudPreferences(AddonPreferences):
         path_box.prop(self, 'flamenco_job_output_path', text='')
         props = path_box.operator('flamenco.explore_file_path', text='', icon='DISK_DRIVE')
         props.path = self.flamenco_job_output_path
-
+        job_output_box.prop(self, 'flamenco_exclude_filter')
-        show_warning = bool(self.flamenco_exclude_filter and
-                            not bam_interface.bam_supports_exclude_option())
-        job_output_box.alert = show_warning
-        job_output_box.prop(self, 'flamenco_exclude_filter',
-                            icon='ERROR' if show_warning else 'NONE')
-        if show_warning:
-            job_output_box.label(
-                text='Warning, the exclusion filter requires a newer version of Blender!')
-        job_output_box.alert = False
 
         prop_split = job_output_box.split(0.32, align=True)
         prop_split.label('Strip Components:')

blender_cloud/flamenco/__init__.py

@@ -25,6 +25,19 @@ import logging
 from pathlib import Path, PurePath
 import typing
 
+
+if "bpy" in locals():
+    import importlib
+
+    try:
+        bam_interface = importlib.reload(bam_interface)
+        sdk = importlib.reload(sdk)
+    except NameError:
+        from . import bam_interface, sdk
+else:
+    from . import bam_interface, sdk
+
+
 import bpy
 from bpy.types import AddonPreferences, Operator, WindowManager, Scene, PropertyGroup
 from bpy.props import StringProperty, EnumProperty, PointerProperty, BoolProperty, IntProperty
@@ -32,6 +45,7 @@ from bpy.props import StringProperty, EnumProperty, PointerProperty, BoolPropert
 from .. import async_loop, pillar
 from ..utils import pyside_cache, redraw
 
+
 log = logging.getLogger(__name__)
 
 # Global flag used to determine whether panels etc. can be drawn.
@@ -301,7 +315,6 @@ class FLAMENCO_OT_render(async_loop.AsyncModalOperatorMixin,
 
         from datetime import datetime
         from ..blender import preferences
-        from . import bam_interface
 
         prefs = preferences()
 
@@ -359,14 +372,15 @@ class FLAMENCO_OT_copy_files(Operator,
 
     async def async_execute(self, context):
         from pathlib import Path
-        from . import bam_interface
         from ..blender import preferences
 
         context.window_manager.flamenco_status = 'PACKING'
+        exclusion_filter = preferences().flamenco_exclude_filter or None
 
         missing_sources = await bam_interface.bam_copy(
             Path(context.blend_data.filepath),
             Path(preferences().flamenco_job_file_path),
+            exclusion_filter
         )
 
         if missing_sources:

blender_cloud/flamenco/bam_interface.py

@@ -1,6 +1,5 @@
 """BAM packing interface for Flamenco."""
 
-import functools
 import logging
 from pathlib import Path
 import typing
@@ -15,26 +14,26 @@ class CommandExecutionError(Exception):
     pass
 
 
-if 'bam_supports_exclude_option' in locals():
+def wheel_pythonpath_278() -> str:
-    locals()['bam_supports_exclude_option'].cache_clear()
+    """Returns the value of a PYTHONPATH environment variable needed to run BAM from its wheel file.
 
-
+    Workaround for Blender 2.78c not having io_blend_utils.pythonpath()
-@functools.lru_cache(maxsize=1)
-def bam_supports_exclude_option() -> bool:
-    """Returns True if the version of BAM bundled with Blender supports --exclude.
-
-    This feature was added to BAM 1.1.7, so we can do a simple version check.
     """
 
-    try:
+    import os
-        import io_blend_utils
+    from ..wheels import wheel_filename
-    except ImportError:
-        # If this happens, BAM won't work at all. However, this function can be called from
-        # the GUI; by being a bit careful while importing, we avoid breaking Blender's GUI.
-        log.exception('Error importing io_blend_utils module.')
-        return False
 
-    return io_blend_utils.bl_info['version'] >= (1, 1, 7)
+    # Find the wheel to run.
+    wheelpath = wheel_filename('blender_bam')
+
+    log.info('Using wheel %s to run BAM-Pack', wheelpath)
+
+    # Update the PYTHONPATH to include that wheel.
+    existing_pypath = os.environ.get('PYTHONPATH', '')
+    if existing_pypath:
+        return os.pathsep.join((existing_pypath, wheelpath))
+
+    return wheelpath
 
 
 async def bam_copy(base_blendfile: Path, target_blendfile: Path,
@@ -66,18 +65,20 @@ async def bam_copy(base_blendfile: Path, target_blendfile: Path,
     ]
 
     if exclusion_filter:
-        if bam_supports_exclude_option():
+        args.extend(['--exclude', exclusion_filter])
-            args.extend(['--exclude', exclusion_filter])
-        else:
-            log.warning('Your version of Blender does not support the exclusion filter, '
-                        'copying all files.')
 
     cmd_to_log = ' '.join(shlex.quote(s) for s in args)
     log.info('Executing %s', cmd_to_log)
 
+    # Workaround for Blender 2.78c not having io_blend_utils.pythonpath()
+    if hasattr(io_blend_utils, 'pythonpath'):
+        pythonpath = io_blend_utils.pythonpath()
+    else:
+        pythonpath = wheel_pythonpath_278()
+
     proc = await asyncio.create_subprocess_exec(
         *args,
-        env={'PYTHONPATH': io_blend_utils.pythonpath()},
+        env={'PYTHONPATH': pythonpath},
         stdin=subprocess.DEVNULL,
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,

blender_cloud/wheels/__init__.py

@@ -44,6 +44,12 @@ def load_wheel(module_name, fname_prefix):
                   module_name, module.__file__, fname_prefix)
         return
 
+    sys.path.append(wheel_filename(fname_prefix))
+    module = __import__(module_name)
+    log.debug('Loaded %s from %s', module_name, module.__file__)
+
+
+def wheel_filename(fname_prefix: str) -> str:
     path_pattern = os.path.join(my_dir, '%s*.whl' % fname_prefix)
     wheels = glob.glob(path_pattern)
     if not wheels:
@@ -51,9 +57,7 @@ def load_wheel(module_name, fname_prefix):
 
     # If there are multiple wheels that match, load the latest one.
     wheels.sort()
-    sys.path.append(wheels[-1])
+    return wheels[-1]
-    module = __import__(module_name)
-    log.debug('Loaded %s from %s', module_name, module.__file__)
 
 
 def load_wheels():

requirements.txt

@@ -3,6 +3,7 @@
 lockfile==0.12.2
 pillarsdk==1.6.1
 wheel==0.29.0
+blender-bam==1.1.7
 
 # Secondary requirements:
 cffi==1.6.0

setup.py

@@ -101,6 +101,11 @@ class BuildWheels(Command):
             log.info('Downloading Pillar Python SDK wheel')
             self.download_wheel(requirements['pillarsdk'])
 
+        # Download BAM from pypi. This is required for compatibility with Blender 2.78.
+        if not list(self.wheels_path.glob('blender_bam*.whl')):
+            log.info('Downloading BAM wheel')
+            self.download_wheel(requirements['blender-bam'])
+
         # Build CacheControl.
         if not list(self.wheels_path.glob('CacheControl*.whl')):
             log.info('Building CacheControl in %s', self.cachecontrol_path)
@@ -227,7 +232,7 @@ setup(
               'wheels': BuildWheels},
     name='blender_cloud',
     description='The Blender Cloud addon allows browsing the Blender Cloud from Blender.',
-    version='1.7.1',
+    version='1.7.2',
     author='Sybren A. Stüvel',
     author_email='sybren@stuvel.eu',
     packages=find_packages('.'),