def build_transaction(cls, songs):
""":param songs: a list of dictionary representations of songs."""
#Warn about metadata changes that may cause problems.
#If you change the interface in api, you can warn about changing bad categories, too.
#Something like safelychange(song, entries) where entries are only those you want to change.
for song in songs:
for key in song:
allowed_values = Metadata_Expectations.get_expectation(
key).allowed_values
if allowed_values and song[key] not in allowed_values:
LogController.get_logger("modifyentries").warning(
"setting key {0} to unallowed value {1} for id {2}. Check metadata expectations in protocol.py"
.format(key, song[key], song["id"]))
req = {"entries": songs}
res = {
"type": "object",
"properties": {
"success": {
"type": "boolean"
},
"songs": WC_Protocol.song_array
},
"additionalProperties": False
}
return (req, res)
def build_transaction(cls, songs):
""":param songs: a list of dictionary representations of songs."""
#Warn about metadata changes that may cause problems.
#If you change the interface in api, you can warn about changing bad categories, too.
#Something like safelychange(song, entries) where entries are only those you want to change.
for song in songs:
for key in song:
allowed_values = Metadata_Expectations.get_expectation(key).allowed_values
if allowed_values and song[key] not in allowed_values:
LogController.get_logger("modifyentries").warning(
"setting key %s to unallowed value %s for id "
"%s. Check metadata expectations in "
"protocol.py" % (key, song[key], song["id"]))
req = {"entries": songs}
res = {"type": "object",
"properties":{
"success": {"type":"boolean"},
"songs":WC_Protocol.song_array
},
"additionalProperties":False
}
return (req, res)
def get_expectation(cls, key, warn_on_unknown=True):
"""Get the Expectation associated with the given key name.
If no Expectation exists for that name, an immutable Expectation of any type is returned."""
mangle = False
if not hasattr(cls,key):
mangle = True
expt_name = "gm_" + key if mangle else key
try:
expt = getattr(cls,expt_name)
if not issubclass(expt, _Metadata_Expectation):
raise TypeError
return expt
except (AttributeError, TypeError):
if warn_on_unknown: LogController.get_logger("get_expectation").warning("unknown metadata type '%s'", key)
return UnknownExpectation
