Files
cellxgene/server/app/util/utils.py
Charlotte Weaver 210787cb5d Filter in engine (#307)
* Add empty filter case

* Filtering dataframes moved to engine instead of rest

* minor changes from PR review

* Minor fixes from PR review

Pass {} instead of none if no filter
chain exceptions
typos
2018-10-11 15:23:31 -07:00

46 lines
1.2 KiB
Python

import json
from numpy import float32, integer
class Float32JSONEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, float32):
return float(obj)
elif isinstance(obj, integer):
return int(obj)
return json.JSONEncoder.default(self, obj)
class MimeTypeError(Exception):
def __init__(self, message):
self.message = message
class FilterError(Exception):
def __init__(self, message):
self.message = message
class InteractiveError(Exception):
def __init__(self, message):
self.message = message
def get_mime_type(default="application/json", acceptable_types=["application/json", "text/csv"], query_param=None,
header=None):
mime_type = default
if query_param:
if query_param in acceptable_types:
mime_type = query_param
else:
raise MimeTypeError(f"Unsupported mime type {query_param} specified in query parameter 'accept-type'")
elif len(header):
mime_type = header.best_match(acceptable_types)
if not mime_type:
raise MimeTypeError(f"Unsupported mime type(s) {header} in HTTP Accept header")
return mime_type