def parse_metadata_entry(label: str, value: ParseableMetadataEntryData) -> "EventMetadataEntry":
check.str_param(label, "label")
if isinstance(value, (EventMetadataEntry, PartitionMetadataEntry)):
raise DagsterInvalidEventMetadata(
f"Expected a metadata value, found an instance of {value.__class__.__name__}. Consider "
"instead using a EventMetadata wrapper for the value, or using the `metadata_entries` "
"parameter to pass in a List[EventMetadataEntry|PartitionMetadataEntry]."
)
if isinstance(
value,
(
TextMetadataEntryData,
UrlMetadataEntryData,
PathMetadataEntryData,
JsonMetadataEntryData,
MarkdownMetadataEntryData,
FloatMetadataEntryData,
IntMetadataEntryData,
PythonArtifactMetadataEntryData,
DagsterAssetMetadataEntryData,
DagsterPipelineRunMetadataEntryData,
),
):
return EventMetadataEntry(label, None, value)
if isinstance(value, str):
return EventMetadataEntry.text(value, label)
if isinstance(value, float):
return EventMetadataEntry.float(value, label)
if isinstance(value, int):
return EventMetadataEntry.int(value, label)
if isinstance(value, dict):
try:
# check that the value is JSON serializable
seven.dumps(value)
return EventMetadataEntry.json(value, label)
except TypeError:
raise DagsterInvalidEventMetadata(
f'Could not resolve the metadata value for "{label}" to a JSON serializable value. '
"Consider wrapping the value with the appropriate EventMetadata type."
)
raise DagsterInvalidEventMetadata(
f'Could not resolve the metadata value for "{label}" to a known type. '
f"Its type was {type(value)}. Consider wrapping the value with the appropriate "
"EventMetadata type."
)
def parse_metadata(metadata, metadata_entries):
if metadata and metadata_entries:
raise DagsterInvalidEventMetadata(
"Attempted to provide both `metadata` and `metadata_entries` arguments to an event. "
"Must provide only one of the two.")
if metadata_entries:
return check.list_param(metadata_entries, "metadata_entries",
(EventMetadataEntry, PartitionMetadataEntry))
return [
parse_metadata_entry(k, v) for k, v in check.opt_dict_param(
metadata, "metadata", key_type=str).items()
]