def pack_user_func_return_value(
self, return_result: ApiFuncReturnValue, tasks: Sequence[InferenceTask],
) -> Sequence[InferenceResult[str]]:
results = []
for json_obj, task in regroup_return_value(return_result, tasks):
args = task.cli_args
if args:
parser = argparse.ArgumentParser()
parser.add_argument(
"-o", "--output", default="json", choices=["str", "json"]
)
parsed_args, _ = parser.parse_known_args(args)
output = parsed_args.output
else:
output = "json"
try:
if output == "json":
json_str = json.dumps(json_obj, cls=NumpyJsonEncoder)
else:
json_str = str(json_obj)
results.append(
InferenceResult(
data=json_str,
http_status=200,
http_headers={"Content-Type": "application/json"},
)
)
except AssertionError as e:
results.append(InferenceError(err_msg=str(e), http_status=400,))
except Exception as e: # pylint: disable=broad-except
results.append(InferenceError(err_msg=str(e), http_status=500,))
return tuple(results)
def predict(self, parsed_json: JsonSerializable):
text = parsed_json.get("text")
model, tokenizer = self.get_artifacts()
# tokenize
inputs = tokenizer.encode("summarize: " + text,
return_tensors="pt",
max_length=512)
# invalidate token lengths of less than 10
if len(inputs[0]) < 10:
return InferenceError(err_msg="text too short", http_status=400)
# summarize text, top 4 results
output = model.generate(inputs,
max_length=150,
min_length=40,
length_penalty=2.0,
num_beams=4,
early_stopping=True)
# decode most likely
output = tokenizer.decode(output[0],
skip_special_tokens=True).replace(" .", ".")
json_out = json.dumps({"result": output})
return InferenceResult(
data=json_out,
http_status=200,
http_headers={"Content-Type": "application/json"},
)
def pack_user_func_return_value(
self,
return_result,
tasks: Sequence[InferenceTask],
) -> Sequence[InferenceResult[str]]:
rv = []
results = tf_to_numpy(return_result)
for result, _ in regroup_return_value(results, tasks):
try:
result_str = json.dumps(result, cls=TfTensorJsonEncoder)
rv.append(InferenceResult(data=result_str, http_status=200))
except Exception as e: # pylint: disable=broad-except
rv.append(InferenceError(err_msg=str(e), http_status=500))
return rv
def pack_user_func_return_value(
self,
return_result,
tasks: Sequence[InferenceTask],
) -> Sequence[InferenceResult[str]]:
rv = []
i = 0
for task in tasks:
if task.batch is None:
result = return_result[i:i + 1]
i += 1
else:
result = return_result[i:i + task.batch]
i += task.batch
try:
result = df_to_json(result, self.output_orient)
rv.append(InferenceResult(http_status=200, data=result))
except Exception as e: # pylint: disable=broad-except
rv.append(InferenceError(err_msg=str(e), http_status=500))
return rv
def predict(self, parsed_json: JsonSerializable):
text = parsed_json.get("text")
model, tokenizer = self.get_artifacts()
# tokenize
tokens = tokenizer.tokenize(tokenizer.decode(tokenizer.encode(text)))
inputs = tokenizer.encode(text, return_tensors="pt")
# invalidate token lengths of less than 10
if len(inputs[0]) < 10:
return InferenceError(err_msg="text too short", http_status=400)
# get logits and argmax
outputs = model(inputs).logits
output = torch.argmax(outputs, dim=2)[0].numpy()
# token fragment grouping
res = []
prev_decoded = 'O'
for token, prediction in zip(tokens, output):
decoded = self.label_list[prediction]
if decoded != 'O':
if decoded == prev_decoded:
if token.startswith('##'):
new_token = res[-1][0] + token[2:]
else:
new_token = res[-1][0] + ' ' + token
res[-1] = (new_token, decoded)
else:
res.append((token, decoded))
prev_decoded = decoded
json_out = json.dumps({"result": res})
return InferenceResult(
data=json_out,
http_status=200,
http_headers={"Content-Type": "application/json"},
)
def predict_direct_json(self, input_data, task: InferenceTask = None):
if task.http_headers.content_type != "application/json":
return InferenceError(http_status=400, err_msg="application/json only")
result = self.artifacts.model.predict_json([input_data])[0]
return InferenceResult(http_status=200, data=json.dumps(result))
