--- /dev/null
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import logging
+
+from . import api
+
+_logger = logging.getLogger('arvados.vocabulary')
+
+def load_vocabulary(api_client=None):
+ """Load the Arvados vocabulary from the API.
+ """
+ if api_client is None:
+ api_client = api('v1')
+ return Vocabulary(api_client.vocabulary())
+
+class VocabularyError(Exception):
+ """Base class for all vocabulary errors.
+ """
+ pass
+
+class VocabularyKeyError(VocabularyError):
+ pass
+
+class VocabularyValueError(VocabularyError):
+ pass
+
+class Vocabulary(object):
+ def __init__(self, voc_definition={}):
+ self.strict_keys = voc_definition.get('strict_tags', False)
+ self.key_aliases = {}
+
+ for key_id, val in (voc_definition.get('tags') or {}).items():
+ strict = val.get('strict', False)
+ key_labels = [l['label'] for l in val.get('labels', [])]
+ values = {}
+ for v_id, v_val in (val.get('values') or {}).items():
+ labels = [l['label'] for l in v_val.get('labels', [])]
+ values[v_id] = VocabularyValue(v_id, labels)
+ vk = VocabularyKey(key_id, key_labels, values, strict)
+ self.key_aliases[key_id.lower()] = vk
+ for alias in vk.aliases:
+ self.key_aliases[alias.lower()] = vk
+
+ def __getitem__(self, key):
+ return self.key_aliases[key.lower()]
+
+ def convert_to_identifiers(self, obj={}):
+ """Translate key/value pairs to machine readable identifiers.
+ """
+ return self._convert_to_what(obj, 'identifier')
+
+ def convert_to_labels(self, obj={}):
+ """Translate key/value pairs to human readable labels.
+ """
+ return self._convert_to_what(obj, 'preferred_label')
+
+ def _convert_to_what(self, obj={}, what=None):
+ if not isinstance(obj, dict):
+ raise ValueError("obj must be a dict")
+ if what not in ['preferred_label', 'identifier']:
+ raise ValueError("what attr must be 'preferred_label' or 'identifier'")
+ r = {}
+ for k, v in obj.items():
+ # Key validation & lookup
+ key_found = False
+ if not isinstance(k, str):
+ raise VocabularyKeyError("key '{}' must be a string".format(k))
+ k_what, v_what = k, v
+ try:
+ k_what = getattr(self[k], what)
+ key_found = True
+ except KeyError:
+ if self.strict_keys:
+ raise VocabularyKeyError("key '{}' not found in vocabulary".format(k))
+
+ # Value validation & lookup
+ if isinstance(v, list):
+ v_what = []
+ for x in v:
+ if not isinstance(x, str):
+ raise VocabularyValueError("value '{}' for key '{}' must be a string".format(x, k))
+ try:
+ v_what.append(getattr(self[k][x], what))
+ except KeyError:
+ if self[k].strict:
+ raise VocabularyValueError("value '{}' not found for key '{}'".format(x, k))
+ v_what.append(x)
+ else:
+ if not isinstance(v, str):
+ raise VocabularyValueError("{} value '{}' for key '{}' must be a string".format(type(v).__name__, v, k))
+ try:
+ v_what = getattr(self[k][v], what)
+ except KeyError:
+ if key_found and self[k].strict:
+ raise VocabularyValueError("value '{}' not found for key '{}'".format(v, k))
+
+ r[k_what] = v_what
+ return r
+
+class VocabularyData(object):
+ def __init__(self, identifier, aliases=[]):
+ self.identifier = identifier
+ self.aliases = aliases
+
+ def __getattribute__(self, name):
+ if name == 'preferred_label':
+ return self.aliases[0]
+ return super(VocabularyData, self).__getattribute__(name)
+
+class VocabularyValue(VocabularyData):
+ def __init__(self, identifier, aliases=[]):
+ super(VocabularyValue, self).__init__(identifier, aliases)
+
+class VocabularyKey(VocabularyData):
+ def __init__(self, identifier, aliases=[], values={}, strict=False):
+ super(VocabularyKey, self).__init__(identifier, aliases)
+ self.strict = strict
+ self.value_aliases = {}
+ for v_id, v_val in values.items():
+ self.value_aliases[v_id.lower()] = v_val
+ for v_alias in v_val.aliases:
+ self.value_aliases[v_alias.lower()] = v_val
+
+ def __getitem__(self, key):
+ return self.value_aliases[key.lower()]
\ No newline at end of file
projects / arvados.git / blobdiff