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import base64
import inspect
import logging
import logging.handlers
import os
import multiprocessing
import pathlib
import pickle
import subprocess
import sys
from typing import Callable, Dict, List
class TestEnvironment:
def __init__(self):
# Directory paths.
self.repo_dir = pathlib.Path(__file__).parent.parent.parent.parent
self.base_dir = self.repo_dir.parent / 'benchmark'
self.blender_dir = self.base_dir / 'blender.git'
self.build_dir = self.base_dir / 'build'
self.lib_dir = self.base_dir / 'lib'
self.benchmarks_dir = self.lib_dir / 'benchmarks'
# Executable paths.
if sys.platform == 'darwin':
blender_executable = 'Blender.app/Contents/MacOS/Blender'
elif sys.platform == 'win32':
blender_executable = 'blender.exe'
else:
blender_executable = 'blender'
self.blender_executable = self.build_dir / 'bin' / blender_executable
self.git_executable = 'git'
self.cmake_executable = 'cmake'
self.logger = None
self._init_logger()
def _init_logger(self):
# Logging.
if os.path.isdir(self.base_dir) and not self.logger:
log = self.base_dir / 'command.log'
maxbytes = 5 * 1024 * 1024
self.logger = logging.getLogger('Blender Benchmark')
self.logger.setLevel(logging.INFO)
handler = logging.handlers.RotatingFileHandler(log, maxBytes=maxbytes, backupCount=0)
self.logger.addHandler(handler)
def validate(self) -> bool:
benchmarks_dir = self.repo_dir.parent / 'lib' / 'benchmarks'
if not os.path.isdir(benchmarks_dir):
return 'Warning: benchmarks not found at ' + str(benchmarks_dir)
return None
def initialized(self) -> bool:
return os.path.isdir(self.base_dir) and \
os.path.isdir(self.blender_dir) and \
os.path.isdir(self.build_dir) and \
os.path.isdir(self.benchmarks_dir)
def init(self) -> None:
blender_dir = self.repo_dir
lib_dir = self.repo_dir.parent / 'lib'
if not os.path.isdir(self.base_dir):
print("Creating", self.base_dir)
os.makedirs(self.base_dir, exist_ok=True)
self._init_logger()
if not os.path.isdir(self.lib_dir):
print("Creating symlink at", self.lib_dir)
os.symlink(lib_dir, self.lib_dir, target_is_directory=True)
if not os.path.isdir(self.blender_dir):
print("Creating git worktree in", self.blender_dir)
self.call([self.git_executable, 'worktree', 'add', self.blender_dir, 'HEAD'], blender_dir)
# Setup build directory.
print("Configuring cmake in", self.build_dir)
os.makedirs(self.build_dir, exist_ok=True)
cmakecache = self.build_dir / 'u.txt'
if os.path.isfile(cmakecache):
os.remove(cmakecache)
cmake_options = ['-DWITH_CYCLES_NATIVE_ONLY=ON',
'-DWITH_BUILDINFO=OFF',
'-DWITH_INTERNATIONAL=OFF']
self.call([self.cmake_executable, self.blender_dir] + cmake_options, self.build_dir)
print("Done")
def current_revision(self) -> str:
lines = self.call([self.git_executable, 'rev-parse', '--short=7', 'HEAD'], self.repo_dir)
return lines[0].strip()
def build_revision(self, revision: str) -> None:
# Checkout Blender revision
self.call([self.git_executable, 'clean', '-f', '-d'], self.blender_dir)
self.call([self.git_executable, 'reset', '--hard', 'HEAD'], self.blender_dir)
self.call([self.git_executable, 'fetch', 'origin'], self.blender_dir)
self.call([self.git_executable, 'checkout', '--detach', revision], self.blender_dir)
# Update submodules not needed for now
# make_update = self.blender_dir / 'build_files' / 'utils' / 'make_update.py'
# self.call([sys.executable, make_update, '--no-libraries', '--no-blender'], self.blender_dir)
# Build
self.call([self.cmake_executable,
'--build', '.',
'--parallel', str(multiprocessing.cpu_count()),
'--target', 'install',
'--config', 'Release'],
self.build_dir)
def info(self, msg):
if self.logger:
self.logger.info(msg)
else:
print(msg)
def call(self, args: List[str], cwd: pathlib.Path, silent=False) -> List[str]:
"""Execute command with arguments in specified directory,
and return combined stdout and stderr output."""
self.info("$ " + " ".join([str(arg) for arg in args]))
proc = subprocess.Popen(args, cwd=cwd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
lines = []
while proc.poll() is None:
line = proc.stdout.readline()
if line:
line = line.decode('utf-8', 'ignore')
self.info(line.strip())
lines += [line]
if proc.returncode != 0 and not silent:
raise Exception("Error executing command")
return lines
def call_blender(self, args: List[str], foreground=False) -> List[str]:
"""Execute Blender command with arguments"""
common_args = ['--factory-startup', '--enable-autoexec']
if foreground:
common_args += ['--no-window-focus', '--window-geometry', '0', '0', '1024', '768']
else:
common_args += ['--background']
return self.call([self.blender_executable] + common_args + args, cwd=self.base_dir)
def run_in_blender(self, function: Callable[[Dict], Dict], args: Dict, blendfile=None, foreground=False) -> Dict:
"""Run function in a Blender instance. Arguments and return values are
passed as a dictionary that must be serializable with pickle."""
function_path = os.path.abspath(inspect.getfile(function))
# Get information to call this function from Blender.
package_path = pathlib.Path(__file__).parent.parent
functionname = function.__name__
modulename = inspect.getmodule(function).__name__
# Serialize arguments in base64, to avoid having to escape it.
args = base64.b64encode(pickle.dumps(args))
output_prefix = 'TEST_OUTPUT: '
expression = (f'import sys, pickle, base64\n'
f'sys.path.append("{package_path}")\n'
f'import {modulename}\n'
f'args = pickle.loads(base64.b64decode({args}))\n'
f'result = {modulename}.{functionname}(args)\n'
f'result = base64.b64encode(pickle.dumps(result))\n'
f'print("{output_prefix}" + result.decode())\n')
blender_args = []
if blendfile:
blender_args += [blendfile]
blender_args += ['--python-expr', expression]
lines = self.call_blender(blender_args, foreground=foreground)
# Parse output.
for line in lines:
if line.startswith(output_prefix):
output = line[len(output_prefix):].strip()
result = pickle.loads(base64.b64decode(output))
return result
return {}
def find_blend_files(self, dirname):
"""
Search for <name>.blend or <name>/<name>.blend files in the given directory
under lib/benchmarks.
"""
dirpath = self.benchmarks_dir / dirname
filepaths = []
if os.path.isdir(dirpath):
for filename in os.listdir(dirpath):
filepath = dirpath / filename
if os.path.isfile(filepath) and filename.endswith('.blend'):
filepaths += [filepath]
elif os.path.isdir(filepath):
filepath = filepath / (filename + ".blend")
if os.path.isfile(filepath):
filepaths += [filepath]
return filepaths
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