/
output_modules.py
551 lines (477 loc) · 19.9 KB
/
output_modules.py
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import ast
import copy
import os
import sys
import unittest
from vistrails.core.configuration import ConfigurationObject, ConfigField, ConfigPath, ConfigURL, get_vistrails_persistent_configuration, get_vistrails_temp_configuration
from vistrails.core.modules.vistrails_module import Module, NotCacheable, ModuleError
from vistrails.core.modules.config import IPort, OPort, ModuleSettings
import vistrails.core.system
class OutputMode(object):
mode_type = None
priority = -1
@classmethod
def can_compute(cls):
return False
def compute_output(self, output_module, configuration=None):
raise NotImplementedError("Subclass of OutputMode should implement "
"this")
# Ideally, these are globally and locally configurable so that we use
# global settings if nothing is set locally (e.g. output directory)
class OutputModeConfig(dict):
mode_type = None
_fields = []
def __init__(self, *args, **kwargs):
dict.__init__(self, *args, **kwargs)
for k, v in self.iteritems():
if not self.has_field(k):
raise ValueError('Field "%s" is not declared for class "%s"' %
(k, self.__class__.__name__))
@classmethod
def ensure_field_dict(cls):
if '_field_dict' not in cls.__dict__:
if '_fields' in cls.__dict__:
cls._field_dict = dict((f.name, f) for f in cls._fields)
else:
cls._field_dict = {}
@classmethod
def has_field(cls, k):
cls_list = [cls]
while len(cls_list) > 0:
c = cls_list.pop(0)
print "class:", c
if issubclass(c, OutputModeConfig):
c.ensure_field_dict()
if k in c._field_dict:
return True
cls_list.extend(c.__bases__)
return False
@classmethod
def get_field(cls, k):
cls_list = [cls]
while len(cls_list) > 0:
c = cls_list.pop(0)
if issubclass(c, OutputModeConfig):
c.ensure_field_dict()
if k in c._field_dict:
return c._field_dict[k]
cls_list.extend(c.__bases__)
return None
@classmethod
def get_all_fields(cls):
field_dicts = []
cls_list = [cls]
while len(cls_list) > 0:
c = cls_list.pop(0)
if issubclass(c, OutputModeConfig):
c.ensure_field_dict()
field_dicts.append(c._field_dict)
cls_list.extend(c.__bases__)
field_dict = {}
for fd in reversed(field_dicts):
field_dict.update(fd)
fields = field_dict.values()
fields.sort()
return fields
@classmethod
def get_local_fields(cls):
return sorted(cls._fields)
@classmethod
def get_default(cls, k):
f = cls.get_field(k)
if f is not None:
return f.default_val
return None
@classmethod
def has_from_config(cls, config, k):
if hasattr(cls, 'mode_type'):
mode_type = cls.mode_type
if config.has(mode_type):
subconfig = getattr(config, mode_type)
if subconfig.has(k):
return True
return False
@classmethod
def get_from_config(cls, config, k):
if hasattr(cls, 'mode_type'):
mode_type = cls.mode_type
if config.has(mode_type):
subconfig = getattr(config, mode_type)
if subconfig.has(k):
return getattr(subconfig, k)
return None
@classmethod
def has_override(cls, k):
config = get_vistrails_temp_configuration().outputSettings
return cls.has_from_config(config, k)
@classmethod
def get_override(cls, k):
config = get_vistrails_temp_configuration().outputSettings
str_val = cls.get_from_config(config, k)
return cls.get_field(k).from_string(str_val)
@classmethod
def has_global_setting(cls, k):
config = get_vistrails_persistent_configuration().outputDefaultSettings
return cls.has_from_config(config, k)
@classmethod
def get_global_setting(cls, k):
config = get_vistrails_persistent_configuration().outputDefaultSettings
return cls.get_from_config(config, k)
@classmethod
def has_config_setting(cls, k):
return cls.has_override(k) or cls.has_global_setting(k)
def __setitem__(self, k, v):
if not self.has_field(k):
raise ValueError('Setting "%s" is not declared for class "%s"' %
(k, self.__class__.__name__))
dict.__setitem__(self, k, v)
def __getitem__(self, k):
if self.has_override(k):
return self.get_override(k)
try:
return dict.__getitem__(self, k)
except KeyError, e:
if self.has_global_setting(k):
return self.get_global_setting(k)
else:
if self.has_field(k):
return self.get_default(k)
raise e
def __hasitem__(self, k):
return (self.has_field(k) or dict.__hasitem__(self, k) or
self.has_override(k) or self.has_global_setting(k))
class OutputModule(NotCacheable, Module):
_input_ports = [IPort('value', "Variant"),
IPort('mode_type', "String"),
IPort('configuration', "Dictionary")]
_settings = ModuleSettings(configure_widget="vistrails.gui.modules.output_configuration:OutputModuleConfigurationWidget")
# configuration is a dictionary of dictionaries where root-level
# keys are mode_types and the inner dictionaries are
# workflow-specific settings
# want to have mode inheritance here...
@classmethod
def ensure_mode_dict(cls):
if '_output_modes_dict' not in cls.__dict__:
if '_output_modes' in cls.__dict__:
cls._output_modes_dict = \
dict((mcls.mode_type, (mcls, mcls.priority))
for mcls in cls._output_modes)
else:
cls._output_modes_dict = {}
@classmethod
def register_output_mode(cls, mode_cls, priority=None):
if mode_cls.mode_type is None:
raise ValueError("mode_cls.mode_type must not be None")
if priority is None:
priority = mode_cls.priority
cls.ensure_mode_dict()
if '_output_modes' not in cls.__dict__:
cls._output_modes = []
cls._output_modes.append(mode_cls)
cls._output_modes_dict[mode_cls.mode_type] = (mode_cls, priority)
@classmethod
def set_mode_priority(cls, mode_type, priority):
cls.ensure_mode_dict()
if mode_type not in cls._output_modes_dict:
raise ValueError('mode_type "%s" is not set for this module' %
mode_type)
cls._output_modes_dict[mode_type][1] = priority
@classmethod
def get_mode_class(cls, mode_type):
cls_list = [cls]
while len(cls_list) > 0:
c = cls_list.pop(0)
if issubclass(c, OutputModule):
c.ensure_mode_dict()
if mode_type in c._output_modes_dict:
return c._output_modes_dict[mode_type][0]
cls_list.extend(c.__bases__)
return None
@classmethod
def get_sorted_mode_list(cls):
cls_list = [cls]
idx = 0
while idx < len(cls_list):
for c in cls_list[idx].__bases__:
if issubclass(c, OutputModule):
c.ensure_mode_dict()
cls_list.append(c)
idx += 1
mode_dict = {}
for c in reversed(cls_list):
mode_dict.update(c._output_modes_dict)
mode_list = [c for c, _ in reversed(sorted(mode_dict.itervalues(),
key=lambda x: x[1]))]
return mode_list
@classmethod
def get_mode_tree(cls):
cls_list = [cls]
idx = 0
while idx < len(cls_list):
for c in cls_list[idx].__bases__:
if issubclass(c, OutputModule):
c.ensure_mode_dict()
cls_list.append(c)
idx += 1
mode_tree = {}
for c in reversed(cls_list):
c.ensure_mode_dict()
def get_mode_config(self, mode_cls):
mode_config_cls = mode_cls.config_cls
mode_config_dict = {}
configuration = self.force_get_input('configuration')
if configuration is not None:
# want to search through all mode classes in case we have
# base class settings that should trump
cls_list = [mode_config_cls]
mode_config_cls_list = []
while len(cls_list) > 0:
c = cls_list.pop(0)
if issubclass(c, OutputModeConfig):
mode_config_cls_list.append(c)
cls_list.extend(c.__bases__)
mode_config_cls_list.reverse()
for mode_config_cls in mode_config_cls_list:
for k, v in configuration.iteritems():
if k == mode_config_cls.mode_type:
mode_config_dict.update(v)
mode_config = mode_config_cls(mode_config_dict)
return mode_config
def compute(self):
mode_cls = None
self.ensure_mode_dict()
if self.has_input("mode_type"):
# use user-specified mode_type
mode_type = self.get_input("mode_type")
mode_cls = self.get_mode_class(mode_type)
if mode_cls is None:
raise ModuleError(self, 'Cannot output in mode "%s" because '
'that mode has not been defined' % mode_type)
else:
# FIXME should have user-setable priorities!
# determine mode_type based on registered modes by priority,
# checking if each is possible
for mcls in self.get_sorted_mode_list():
if mcls.can_compute():
mode_cls = mcls
break
if mode_cls is None:
raise ModuleError(self, "No output mode is valid, output cannot "
"be generated")
mode_config = self.get_mode_config(mode_cls)
mode = mode_cls()
self.annotate({"output_mode": mode.mode_type})
mode.compute_output(self, mode_config)
class StdoutModeConfig(OutputModeConfig):
mode_type = "stdout"
_fields = []
class StdoutMode(OutputMode):
mode_type = "stdout"
priority = 2
config_cls = StdoutModeConfig
@classmethod
def can_compute(cls):
return True
class FileModeConfig(OutputModeConfig):
mode_type = "file"
_fields = [ConfigField('file', None, ConfigPath),
ConfigField('basename', None, str),
ConfigField('prefix', None, str),
ConfigField('suffix', None, str),
ConfigField('dir', None, ConfigPath),
ConfigField('series', False, bool),
ConfigField('overwrite', True, bool),
ConfigField('seriesPadding', 3, int),
ConfigField('seriesStart', 0, int),
ConfigField('format', None, str)]
class FileMode(OutputMode):
mode_type = "file"
priority = 1
config_cls = FileModeConfig
formats = []
# need to reset this after each execution!
series_next = 0
@classmethod
def can_compute(cls):
return True
@classmethod
def get_formats(cls):
formats = []
cls_list = [cls]
while len(cls_list) > 0:
c = cls_list.pop(0)
if issubclass(c, FileMode):
if 'formats' in c.__dict__:
return c.formats
cls_list.extend(c.__bases__)
return []
def get_format(self, configuration=None):
format_map = {'png': 'png',
'jpeg': 'jpg',
'jpg': 'jpg',
'tif': 'tif',
'tiff': 'tif'}
if configuration is not None and 'format' in configuration:
conf_format = configuration['format']
if conf_format.lower() in format_map:
return format_map[conf_format.lower()]
return conf_format
# default is the first listed if it exists
format_list = self.get_formats()
if len(format_list) > 0:
return format_list[0]
return None
def get_series_num(self):
retval = FileMode.series_next
FileMode.series_next += 1
return retval
# FIXME should add format into this computation
def get_filename(self, configuration, full_path=None, filename=None,
dirname=None, basename=None, prefix=None, suffix=None,
overwrite=True, series=False, series_padding=3):
# if prefix/suffix/series are overridden, want to use them
# instead of name...
if full_path is None:
# use file if overridden or none of the file params are
# overridden and the file is not None
overwrite = configuration['overwrite']
if (configuration.has_override('file') or
(not (configuration.has_override('basename') or
configuration.has_override('prefix') or
configuration.has_override('suffix') or
configuration.has_override('dir') or
configuration.has_override('series') or
configuration.has_override('seriesPadding') or
configuration.has_override('seriesStart')) and
'file' in configuration and
configuration['file'] is not None)):
full_path = configuration['file']
else:
if configuration['basename'] is not None:
basename = configuration['basename']
if configuration['prefix'] is not None:
prefix = configuration['prefix']
if configuration['suffix'] is not None:
suffix = configuration['suffix']
if configuration['dir'] is not None:
dirname = configuration['dir']
if configuration['series'] is not None:
series = configuration['series']
if configuration['seriesPadding'] is not None:
series_padding = configuration['seriesPadding']
if full_path is None:
# should any of these necessitate series=True?
if basename is None:
basename = 'vt_out'
if prefix is None:
prefix = ''
if suffix is None:
suffix = ''
if dirname is None:
# FIXME should unify with VisTrails output
# directory global! should check for abspath (if
# not, use relative to global output directory)
dirname = ''
# seriesPadding and series have defaults so no
# need to default them
if not overwrite and series:
# need to find first open slot
full_path = None
while full_path is None or os.path.exists(full_path):
series_str = (("%%0%dd" % series_padding) %
self.get_series_num())
full_path = os.path.join(dirname, "%s%s%s%s" %
(prefix, basename,
series_str, suffix))
else:
if series:
series_str = (("%%0%dd" % series_padding) %
self.get_series_num())
else:
series_str = ""
full_path = os.path.join(dirname, "%s%s%s%s" %
(prefix, basename, series_str,
suffix))
if not overwrite and os.path.exists(full_path):
raise IOError('File "%s" exists and overwrite is False' % full_path)
return full_path
class FileToFileMode(FileMode):
def compute_output(self, output_module, configuration=None):
old_fname = output_module.get_input('value').name
full_path = self.get_filename(configuration)
# we know we are in overwrite mode because it would have been
# flagged otherwise
if os.path.exists(full_path):
try:
os.remove(full_path)
except OSError, e:
raise ModuleError(output_module,
('Could not delete existing '
'path "%s"' % full_path))
try:
vistrails.core.system.link_or_copy(old_fname, full_path)
except OSError, e:
msg = "Could not create file '%s': %s" % (full_path, e)
raise ModuleError(output_module, msg)
class FileToStdoutMode(StdoutMode):
def compute_output(self, output_module, configuration=None):
fname = output_module.get_input('value').name
with open(fname, 'r') as f:
for line in f:
sys.stdout.write(line)
class GenericToStdoutMode(StdoutMode):
def compute_output(self, output_module, configuration=None):
value = output_module.get_input('value')
print >>sys.stdout, value
class GenericToFileMode(FileMode):
def compute_output(self, output_module, configuration=None):
value = output_module.get_input('value')
filename = self.get_filename(configuration)
with open(filename, 'w') as f:
print >>f, value
class GenericOutput(OutputModule):
_output_modes = [GenericToStdoutMode, GenericToFileMode]
class FileOutput(OutputModule):
# should set file as a higher priority here...
_input_ports = [('value', 'File')]
_output_modes = [FileToStdoutMode, FileToFileMode]
class ImageFileModeConfig(FileModeConfig):
mode_type = "imageFile"
_fields = [ConfigField('width', 800, int),
ConfigField('height', 600, int)]
class ImageFileMode(FileMode):
config_cls = ImageFileModeConfig
mode_type = "imageFile"
class RichTextOutput(OutputModule):
# need specific spreadsheet richtext mode here
pass
_modules = [OutputModule, GenericOutput, FileOutput]
# need to put WebOutput, ImageOutput, RichTextOutput, SVGOutput, etc. elsewhere
class TestOutputModeConfig(unittest.TestCase):
def test_fields(self):
class AlteredFileModeConfig(FileModeConfig):
_fields = [ConfigField("newattr", 3, int)]
self.assertTrue(AlteredFileModeConfig.has_field("overwrite"))
self.assertTrue(AlteredFileModeConfig.has_field("newattr"))
def test_config(self):
config_obj = ConfigurationObject(file=ConfigurationObject(seriesStart=5))
self.assertTrue(FileModeConfig.has_from_config(config_obj,
"seriesStart"))
self.assertEqual(FileModeConfig.get_from_config(config_obj,
"seriesStart"), 5)
def test_subclass_config(self):
class AlteredFileModeConfig(FileModeConfig):
mode_type = "file"
_fields = [ConfigField("newattr", 3, int)]
config_obj = ConfigurationObject(file=ConfigurationObject(seriesStart=5))
self.assertEqual(AlteredFileModeConfig.get_from_config(config_obj,
"seriesStart"), 5)
def test_get_item(self):
config = FileModeConfig()
self.assertEqual(config["seriesStart"], 0)
def test_get_default(self):
self.assertEqual(FileModeConfig.get_default("seriesStart"), 0)
if __name__ == '__main__':
import vistrails.core.application
app = vistrails.core.application.init()
unittest.main()