def find_plugin_models():
"""
Find custom models
"""
# List of plugin objects
plugins_dir = find_plugins_dir()
# Go through files in plug-in directory
if not os.path.isdir(plugins_dir):
msg = "SasView couldn't locate Model plugin folder %r." % plugins_dir
logger.warning(msg)
return {}
plugin_log("looking for models in: %s" % plugins_dir)
# compile_file(plugins_dir) #always recompile the folder plugin
logger.info("plugin model dir: %s", plugins_dir)
plugins = {}
for filename in os.listdir(plugins_dir):
name, ext = os.path.splitext(filename)
if ext == '.py' and not name == '__init__':
path = os.path.abspath(os.path.join(plugins_dir, filename))
try:
model = load_custom_model(path)
# TODO: add [plug-in] tag to model name in sasview_model
if not model.name.startswith(PLUGIN_NAME_BASE):
model.name = PLUGIN_NAME_BASE + model.name
plugins[model.name] = model
except Exception as exc:
msg = traceback.format_exc()
msg += "\nwhile accessing model in %r" % path
plugin_log(msg)
logger.warning("Failed to load plugin %r. See %s for details",
path, PLUGIN_LOG)
return plugins
def _find_models():
"""
Find custom models
"""
# List of plugin objects
directory = find_plugins_dir()
# Go through files in plug-in directory
if not os.path.isdir(directory):
msg = "SasView couldn't locate Model plugin folder %r." % directory
logger.warning(msg)
return {}
plugin_log("looking for models in: %s" % str(directory))
# compile_file(directory) #always recompile the folder plugin
logger.info("plugin model dir: %s" % str(directory))
plugins = {}
for filename in os.listdir(directory):
name, ext = os.path.splitext(filename)
if ext == '.py' and not name == '__init__':
path = os.path.abspath(os.path.join(directory, filename))
try:
model = load_custom_model(path)
if not model.name.count(PLUGIN_NAME_BASE):
model.name = PLUGIN_NAME_BASE + model.name
plugins[model.name] = model
except Exception:
msg = traceback.format_exc()
msg += "\nwhile accessing model in %r" % path
plugin_log(msg)
logger.warning("Failed to load plugin %r. See %s for details"
% (path, PLUGIN_LOG))
return plugins
def _findModels(dir):
"""
Find custom models
"""
# List of plugin objects
dir = find_plugins_dir()
# Go through files in plug-in directory
if not os.path.isdir(dir):
msg = "SasView couldn't locate Model plugin folder %r." % dir
logging.warning(msg)
return {}
plugin_log("looking for models in: %s" % str(dir))
#compile_file(dir) #always recompile the folder plugin
logging.info("plugin model dir: %s" % str(dir))
plugins = {}
for filename in os.listdir(dir):
name, ext = os.path.splitext(filename)
if ext == '.py' and not name == '__init__':
path = os.path.abspath(os.path.join(dir, filename))
try:
model = load_custom_model(path)
model.name = "[plug-in] " + model.name
plugins[model.name] = model
except Exception:
msg = traceback.format_exc()
msg += "\nwhile accessing model in %r" % path
plugin_log(msg)
logging.warning(
"Failed to load plugin %r. See %s for details" %
(path, PLUGIN_LOG))
return plugins
def load_model(name):
# type: (str) -> Optional["SasviewModel"]
"""
Given a model name load the Sasview shim model from sasmodels.
If name starts with "[Plug-in]" then load it as a custom model from the
plugins directory. This code does not go through the Sasview model manager
interface since that loads all available models rather than just those
needed.
"""
# Remember the models that are loaded so they are only loaded once. While
# not strictly necessary (the models will use identical but different model
# info structure) it saves a little time and memory for the usual case
# where models are reused for simultaneous and batch fitting.
if name in _MODEL_CACHE:
return _MODEL_CACHE[name]
if name.startswith(PLUGIN_NAME_BASE):
name = name[len(PLUGIN_NAME_BASE):]
plugins_dir = find_plugins_dir()
path = os.path.abspath(os.path.join(plugins_dir, name + ".py"))
#print("loading custom", path)
model = load_custom_model(path)
_MODEL_CACHE[name] = model
elif name != "" and name.lower() != "none":
#print("loading standard", name)
model = _make_standard_model(name)
_MODEL_CACHE[name] = model
else:
model = None
return model
def check_model(path):
"""
Check that the model on the path can run.
"""
# TODO: fix model caching
# model_test.run_one() is directly forcing a reload of the module, but
# sasview_model is caching models that have already been loaded.
# If the sasview load happens before the test, then the module is
# reloaded out from under it, which causes the global variables in
# the model function definitions to be cleared (at least in python 2.7).
# To fix the proximal problem of models failing on test, perform the
# run_one() tests first. To fix the deeper problem we should either
# remove caching from sasmodels.sasview_model.load_custom_model() or
# add caching to sasmodels.custom.load_custom_kernel_module(). Another
# option is to add a runTests method to SasviewModel which runs the
# test suite directly from the model info structure. Probably some
# combination of options:
# (1) have this function (check_model) operate on a loaded model
# so that caching isn't needed in sasview_models.load_custom_model
# (2) add the runTests method to SasviewModel so that tests can
# be run on a loaded module.
#
# Also, note that the model test suite runs the equivalent of the
# "try running the model" block below, and doesn't need to be run
# twice. The reason for duplicating the block here is to generate
# an exception that show_model_output can catch. Need to write the
# runTests method so that it returns success flag as well as output
# string so that the extra test is not necessary.
# check the model's unit tests run
from sasmodels.model_test import run_one
result = run_one(path)
# remove cached version of the model, if any
from sasmodels import sasview_model
sasview_model.MODEL_BY_PATH.pop(path, None)
# try running the model
Model = sasview_model.load_custom_model(path)
model = Model()
q = np.array([0.01, 0.1])
Iq = model.evalDistribution(q)
qx, qy = np.array([0.01, 0.01]), np.array([0.1, 0.1])
Iqxy = model.evalDistribution([qx, qy])
return result
def check_model(path):
"""
Check that the model on the path can run.
"""
# try running the model
from sasmodels.sasview_model import load_custom_model
Model = load_custom_model(path)
model = Model()
q = np.array([0.01, 0.1])
Iq = model.evalDistribution(q)
qx, qy = np.array([0.01, 0.01]), np.array([0.1, 0.1])
Iqxy = model.evalDistribution([qx, qy])
# check the model's unit tests run
from sasmodels.model_test import run_one
result = run_one(path)
return result
def check_model(path):
"""
Check that the model on the path can run.
"""
# try running the model
from sasmodels.sasview_model import load_custom_model
Model = load_custom_model(path)
model = Model()
q = np.array([0.01, 0.1])
Iq = model.evalDistribution(q)
qx, qy = np.array([0.01, 0.01]), np.array([0.1, 0.1])
Iqxy = model.evalDistribution([qx, qy])
# check the model's unit tests run
from sasmodels.model_test import run_one
result = run_one(path)
return result
def check_model(path):
"""
Check that the model on the path can run.
"""
# try running the model
from sasmodels.sasview_model import load_custom_model
Model = load_custom_model(path)
model = Model()
q = np.array([0.01, 0.1])
Iq = model.evalDistribution(q)
qx, qy = np.array([0.01, 0.01]), np.array([0.1, 0.1])
Iqxy = model.evalDistribution([qx, qy])
result = """
Iq(%s) = %s
Iqxy(%s, %s) = %s
"""%(q, Iq, qx, qy, Iqxy)
return result
