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tornado_server.py
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tornado_server.py
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#!/usr/bin/env python3
# -*- coding:utf-8 -*-
# Author: kerlomz <kerlomz@gmail.com>
import time
import grpc
import json
import grpc_pb2
import grpc_pb2_grpc
import optparse
import threading
import tornado.ioloop
import tornado.log
from tornado.web import RequestHandler
from constants import Response
from json.decoder import JSONDecodeError
from tornado.escape import json_decode, json_encode
from interface import InterfaceManager
from config import Config
from utils import ImageUtils, ParamUtils
from signature import Signature, ServerType
from watchdog.observers import Observer
from event_handler import FileEventHandler
sign = Signature(ServerType.TORNADO)
def rpc_request(image, model_name="", model_type=""):
channel = grpc.insecure_channel('127.0.0.1:50054')
stub = grpc_pb2_grpc.PredictStub(channel)
response = stub.predict(grpc_pb2.PredictRequest(
image=image,
split_char=',',
model_name=model_name,
model_type=model_type
))
return {"message": response.result, "code": response.code, "success": response.success}
class BaseHandler(RequestHandler):
def __init__(self, application, request, **kwargs):
super().__init__(application, request, **kwargs)
self.exception = Response()
def data_received(self, chunk):
pass
def parse_param(self):
try:
data = json_decode(self.request.body)
except JSONDecodeError:
data = self.request.body_arguments
if not data:
raise tornado.web.HTTPError(400)
return data
def write_error(self, code, **kw):
system = {
500: json_encode(dict(code=code, message="Internal Server Error", success=False)),
400: json_encode(dict(code=code, message="Bad Request", success=False)),
404: json_encode(dict(code=code, message="404 Not Found", success=False)),
403: json_encode(dict(code=code, message="Forbidden", success=False)),
405: json_encode(dict(code=code, message="Method Not Allowed", success=False)),
}
return self.finish(system.get(code) if code in system.keys() else json_encode(self.exception.find(code)))
class AuthHandler(BaseHandler):
@sign.signature_required
def post(self):
start_time = time.time()
data = self.parse_param()
if 'image' not in data.keys():
raise tornado.web.HTTPError(400)
bytes_batch, response = ImageUtils.get_bytes_batch(data['image'])
model_type = ParamUtils.filter(data.get('model_type'))
model_site = ParamUtils.filter(data.get('model_site'))
model_name = ParamUtils.filter(data.get('model_name'))
split_char = ParamUtils.filter(data.get('split_char'))
need_color = ParamUtils.filter(data.get('need_color'))
if not bytes_batch:
logger.error('Type[{}] - Site[{}] - Response[{}] - {} ms'.format(
model_type, model_site, response,
(time.time() - start_time) * 1000)
)
self.finish(json_encode(response))
image_sample = bytes_batch[0]
image_size = ImageUtils.size_of_image(image_sample)
size_string = "{}x{}".format(image_size[0], image_size[1])
if 'model_site' in data:
interface = interface_manager.get_by_sites(model_site, size_string)
elif 'model_type' in data:
interface = interface_manager.get_by_type_size(size_string, model_type)
elif 'model_name' in data:
interface = interface_manager.get_by_name(model_name)
else:
interface = interface_manager.get_by_size(size_string)
split_char = split_char if 'split_char' in data else interface.model_conf.split_char
image_batch, response = ImageUtils.get_image_batch(interface.model_conf, bytes_batch, color=need_color)
if not image_batch:
logger.error('Type[{}] - Site[{}] - Response[{}] - {} ms'.format(
model_type, model_site, response,
(time.time() - start_time) * 1000)
)
return self.finish(json_encode(response))
result = interface.predict_batch(image_batch, split_char)
logger.info('[{}] - Size[{}] - Type[{}] - Site[{}] - Predict Result[{}] - {} ms'.format(
interface.name, size_string, model_type, model_site, result,
(time.time() - start_time) * 1000)
)
response['message'] = result
return self.write(json_encode(response))
class NoAuthHandler(BaseHandler):
@tornado.gen.coroutine
def post(self):
start_time = time.time()
data = self.parse_param()
if 'image' not in data.keys():
raise tornado.web.HTTPError(400)
# # You can separate the http service and the gRPC service like this:
# response = rpc_request(
# data['image'],
# data['model_name'] if 'model_name' in data else '',
# data['model_type'] if 'model_type' in data else ''
# )
model_type = ParamUtils.filter(data.get('model_type'))
model_site = ParamUtils.filter(data.get('model_site'))
model_name = ParamUtils.filter(data.get('model_name'))
split_char = ParamUtils.filter(data.get('split_char'))
need_color = ParamUtils.filter(data.get('need_color'))
bytes_batch, response = ImageUtils.get_bytes_batch(data['image'])
if not bytes_batch:
logger.error('Type[{}] - Site[{}] - Response[{}] - {} ms'.format(
model_type, model_site, response,
(time.time() - start_time) * 1000)
)
return self.finish(json_encode(response))
image_sample = bytes_batch[0]
image_size = ImageUtils.size_of_image(image_sample)
size_string = "{}x{}".format(image_size[0], image_size[1])
if 'model_site' in data:
interface = interface_manager.get_by_sites(model_site, size_string)
elif 'model_type' in data:
interface = interface_manager.get_by_type_size(size_string, model_type)
elif 'model_name' in data:
interface = interface_manager.get_by_name(model_name)
else:
interface = interface_manager.get_by_size(size_string)
split_char = split_char if 'split_char' in data else interface.model_conf.split_char
image_batch, response = ImageUtils.get_image_batch(interface.model_conf, bytes_batch, color=need_color)
if not image_batch:
logger.error('[{}] - Size[{}] - Type[{}] - Site[{}] - Response[{}] - {} ms'.format(
interface.name, size_string, model_type, model_site, response,
(time.time() - start_time) * 1000)
)
return self.finish(json_encode(response))
result = interface.predict_batch(image_batch, split_char)
logger.info('[{}] - Size[{}] - Type[{}] - Site[{}] - Predict Result[{}] - {} ms'.format(
interface.name, size_string, model_type, model_site, result, (time.time() - start_time) * 1000)
)
response['message'] = result
return self.write(json_encode(response))
class ServiceHandler(BaseHandler):
def get(self):
response = {
"total": interface_manager.total,
"online": interface_manager.online_names,
"support": interface_manager.support_sites
}
return self.finish(json.dumps(response, ensure_ascii=False, indent=2))
def make_app():
return tornado.web.Application([
(r"/captcha/auth/v2", AuthHandler),
(r"/captcha/v1", NoAuthHandler),
(r"/service/info", ServiceHandler),
(r".*", BaseHandler),
])
def event_loop():
observer = Observer()
event_handler = FileEventHandler(system_config, model_path, interface_manager)
observer.schedule(event_handler, event_handler.model_conf_path, True)
observer.start()
try:
while True:
time.sleep(1)
except KeyboardInterrupt:
observer.stop()
observer.join()
if __name__ == "__main__":
parser = optparse.OptionParser()
parser.add_option('-p', '--port', type="int", default=19952, dest="port")
parser.add_option('-c', '--config', type="str", default='./config.yaml', dest="config")
parser.add_option('-m', '--model_path', type="str", default='model', dest="model_path")
parser.add_option('-g', '--graph_path', type="str", default='graph', dest="graph_path")
opt, args = parser.parse_args()
server_port = opt.port
conf_path = opt.config
model_path = opt.model_path
graph_path = opt.graph_path
system_config = Config(conf_path=conf_path, model_path=model_path, graph_path=graph_path)
logger = system_config.logger
tornado.log.enable_pretty_logging(logger=logger)
interface_manager = InterfaceManager()
threading.Thread(target=event_loop).start()
sign.set_auth([{'accessKey': system_config.access_key, 'secretKey': system_config.secret_key}])
server_host = "0.0.0.0"
logger.info('Running on http://{}:{}/ <Press CTRL + C to quit>'.format(server_host, server_port))
app = make_app()
app.listen(server_port, server_host)
try:
tornado.ioloop.IOLoop.current().start()
except KeyboardInterrupt:
tornado.ioloop.IOLoop.current().stop()