def handle_exception(request, exception):
exception_handler = utils.import_from_str(
settings.get('EXCEPTION_HANDLER'))
response = exception_handler(request, exception)
# set exception to response convenience for `log_response`
setattr(response, 'exception', exception)
return response
async def start_mq_servers(sanic, loop):
# init and start mq_server
for server_name, params in settings.get('MQ_SERVERS').items():
server_cls = utils.import_from_str(params.pop('server'))
if not issubclass(server_cls, BaseMqServer):
raise Exception(
f'{utils.cls_str_of_cls(server_cls)} is not subclass of {utils.cls_str_of_cls(BaseMqServer)}'
)
server = server_cls(loop=loop, **params)
registry.set(server_name, server, 'mq_servers')
loop.create_task(server.start())
# subscribe handlers
for server_name, handlers in registry.get_group(
'event_handlers').items():
server = registry.get(server_name, 'mq_servers')
if not server:
raise Exception(f'cannot find named "{server_name}" mq_server')
for event_name, handler, msg_type, timeout, max_retry, subscribe in handlers:
await server.subscribe(routing_key=event_name,
handler=handler,
msg_type=msg_type,
timeout=timeout,
max_retry=max_retry,
subscribe=subscribe)
def patch(self, uri, host=None,
strict_slashes=True,
version=None,
name=None,
success_code=200,
header_params: serializers.BaseSerializer = None,
path_params: serializers.BaseSerializer = None,
query_params: serializers.BaseSerializer = None,
body_serializer: serializers.BaseSerializer = None,
response_serializer: serializers.BaseSerializer = None,
tags: list = None,
context: dict = None,
swagger_exclude: bool = False):
context = context or {k: v for k, v in settings.get('DEFAULT_CONTEXT').items()}
context['partial'] = True
return self.wings_route(uri, method='PATCH', host=host,
strict_slashes=strict_slashes, version=version,
name=name,
tags=tags,
success_code=success_code,
header_params=header_params,
path_params=path_params,
query_params=query_params,
body_serializer=body_serializer,
response_serializer=response_serializer,
context=context,
swagger_exclude=swagger_exclude)
def start(self):
""" 启动
"""
loop = registry.get('event_loop') or asyncio.get_event_loop()
report_interval = settings.get('INSPECTOR_REPORT_INTERVAL')
if self._count % report_interval == 0:
logger.info('inspector working, count: %s', self._count)
loop.call_later(self._interval, self.start)
self._count += 1
if self._count > 9999999:
self._count = 1
for task in self.tasks:
func = task['func']
args = task['args']
if self._count % task['interval'] != 0 or task['times'] == 0:
continue
if asyncio.iscoroutinefunction(func):
loop.create_task(func(*args))
else:
loop.call_soon(func, *args)
if task['times'] > 0:
task['times'] -= 1
def exception_handler(request, exception):
context = {k: v for k, v in settings.get('DEFAULT_CONTEXT').items()}
response_shape = get_response_shape(context)
result = utils.get_value(exception, 'message', str(exception))
code = utils.get_value(exception, 'status_code', 500)
result, code = response_shape.create_body(result, code)
return json(body=result, status=code)
def init_context(request):
context_var.set({
'trace_id':
request.headers.get('X-TRACE-ID', '') or str(uuid.uuid4().hex),
'messages': [],
'request_at':
int(datetime_helper.timestamp() * 1000)
})
context_var.get().update(settings.get('DEFAULT_CONTEXT'))
async def __handle_message(self, channel, body, envelope, properties):
encoding = properties.content_encoding or 'utf-8'
content = body.decode(encoding)
logger.debug('receive message from mq: %s', content)
data = utils.instance_from_json(content)
headers = utils.get_value(data, 'headers', {})
ctx = {'trace_id': utils.get_value(headers, 'X-TRACE-ID', '')}
# 用户定制传递的消息头
for k in settings.get('CONTEXT_WHEN_DELIVERY'):
h_k = 'X-' + k.upper().replace('_', '-')
ctx[k] = utils.get_value(headers, h_k)
context_var.set(ctx)
message = utils.get_value(data, 'payload', data)
message = utils.instance_from_json(message, cls=self.msg_type)
retried_count = (properties.headers or {}).get('x-retry-count', 0)
retried_count = retried_count if retried_count >= 0 else 0
try:
if asyncio.iscoroutinefunction(self.handler):
fu = asyncio.ensure_future(self.handler(message),
loop=self.mq_server.loop)
else:
context = contextvars.copy_context()
fu = self.mq_server.loop.run_in_executor(
None, context.run, self.handler, message)
await asyncio.wait_for(fu, self.timeout, loop=self.mq_server.loop)
event.commit_events()
logger.info(
f'handle message success. event_name:{self.routing_key}, handler:{utils.meth_str(self.handler)}, '
f'retried_count: {retried_count}')
except Exception as ex:
if self.max_retry < 0 or retried_count < self.max_retry:
await self.__publish_to_retry_queue(body, retried_count)
error_info = f"event_name: {self.routing_key}, handler: {utils.meth_str(self.handler)}, " \
f"retried_count: {retried_count}, messages: \n{content}"
logger.error(error_info, exc_info=ex)
finally:
await channel.basic_client_ack(envelope.delivery_tag)
context_var.set(None)
def start(self):
""" 启动
"""
loop = registry.get('event_loop') or asyncio.get_event_loop()
report_interval = settings.get('INSPECTOR_REPORT_INTERVAL')
if self._count % report_interval == 0:
wings_logger.info('inspector working, count: %s', self._count)
loop.call_later(self._interval, self.start)
self._count += 1
if self._count > 9999999:
self._count = 1
def done_callback(future):
from wings_sanic import event
if not future.exception():
event.commit_events()
context_var.set(None)
for task in self.tasks:
func = task['func']
args = task['args']
if self._count % task['interval'] != 0 or task['times'] == 0:
continue
context_var.set({
'trace_id': str(uuid.uuid4().hex),
'messages': []
})
if asyncio.iscoroutinefunction(func):
fu = asyncio.ensure_future(func(*args), loop=loop)
else:
context = contextvars.copy_context()
fu = loop.run_in_executor(None, context.run, func, *args)
fu.add_done_callback(done_callback)
if task['times'] > 0:
task['times'] -= 1
def wings_route(self,
uri: str,
method: str = 'GET',
host=None,
strict_slashes=True,
version=None,
name=None,
success_code=200,
header_params: serializers.BaseSerializer = None,
path_params: serializers.BaseSerializer = None,
query_params: serializers.BaseSerializer = None,
body_serializer: serializers.BaseSerializer = None,
response_serializer: serializers.BaseSerializer = None,
tags: list = None,
context: dict = None,
swagger_exclude: bool = False):
""" extension for Sanic's route. Contains parameters for wings framework.
:param uri: the path for the handler to represent.
:param host:
:param strict_slashes:
:param version:
:param name:
:param method: the method this function should respond to. Default GET.
:param success_code:
:param header_params: the arguments that should be passed into the header.
:param path_params: the arguments that are specified by the path. By default, arguments
that are found in the path are used first before the query_parameters and body_parameters.
:param query_params: the arguments that should be query parameters.
By default, all arguments are query_or path parameters for a GET request.
:param body_serializer: the arguments that should be body parameters.
By default, all arguments are either body or path parameters for a non-GET request.
the whole body is validated against a single object.
:param response_serializer: response spec
:param tags: used for swagger tags
:param context: maybe contains 'response_shape' to custom final response format.
:param swagger_exclude: if True, Swagger Document will exclude this api.
:return: decorated function
"""
method = method.upper()
context = context or {
k: v
for k, v in settings.get('DEFAULT_CONTEXT').items()
}
metadata = HandlerMetaData(uri=uri,
method=method,
tags=tags,
success_code=success_code,
header_params=header_params,
path_params=path_params,
query_params=query_params,
body_serializer=body_serializer,
response_serializer=response_serializer,
context=context,
swagger_exclude=swagger_exclude)
def decorator(raw_handler):
@wraps(raw_handler)
async def handler(request, *args, **kwargs):
if isinstance(metadata.context, dict):
from wings_sanic import context_var
context_var.get().update(metadata.context)
kwargs = await views.extract_params(request, metadata)
result = await raw_handler(request,
metadata=metadata,
**kwargs)
response = await views.process_result(result, metadata)
return response
handler.metadata = metadata
self.add_route(handler=handler,
uri=uri,
methods=frozenset({method}),
host=host,
strict_slashes=strict_slashes,
version=version,
name=name)
return handler
return decorator
def build_spec(app, loop):
for uri, route in app.router.routes_all.items():
if uri.startswith(f"{settings.GLOBAL_URL_PREFIX}/swagger"):
continue
# Build list of methods and their handler functions
handler_type = type(route.handler)
if handler_type is CompositionView:
method_handlers = route.handler.handlers.items()
else:
method_handlers = zip(route.methods, repeat(route.handler))
# format path parameters '<param>' to '{param}'
uri_parsed = uri
for parameter in route.parameters:
uri_parsed = re.sub('<' + parameter.name + '.*?>',
'{' + parameter.name + '}', uri_parsed)
for _method, _handler in method_handlers:
metadata = utils.get_value(_handler, 'metadata')
if _method == 'OPTIONS' or not metadata or metadata.swagger_exclude:
continue
# ensure group info
group = metadata.swagger_group or 'default'
if not isinstance(group, dict):
group = {'title': str(group)}
group_title = group.get('title', None) or 'default'
if group_title not in _spec:
_spec[group_title] = copy.deepcopy(settings.get('SWAGGER'))
_spec[group_title].update({
'swagger': '2.0',
'definitions': {},
'paths': {},
})
_spec[group_title]['info'].update(group)
group_spec = _spec[group_title]
if uri_parsed not in group_spec['paths']:
group_spec['paths'][uri_parsed] = {}
# generate path
parameters = []
# header
for name, field in (utils.get_value(metadata.header_serializer,
'fields') or {}).items():
parameter = field.openapi_spec()
parameter.update({'in': 'header'})
parameters.append(parameter)
__update_definitions(group_spec, metadata.header_serializer)
# path
for name, field in (utils.get_value(metadata.path_serializer,
'fields') or {}).items():
parameter = field.openapi_spec()
parameter.update({'in': 'path', 'required': True})
parameters.append(parameter)
__update_definitions(group_spec, metadata.path_serializer)
# query
for name, field in (utils.get_value(metadata.query_serializer,
'fields') or {}).items():
parameter = field.openapi_spec()
parameter.update({'in': 'query'})
parameters.append(parameter)
__update_definitions(group_spec, metadata.query_serializer)
# body
has_file_field = False
if metadata.body_serializer:
body_spec = metadata.body_serializer.openapi_spec()
import wings_sanic
for _, f in metadata.body_serializer.fields.items():
if isinstance(f, wings_sanic.FileField):
has_file_field = True
break
if not has_file_field:
parameters.append({
'in': 'body',
'name': 'body',
'required': True,
'schema': body_spec
})
else:
cls_str = utils.cls_str_of_obj(metadata.body_serializer)
if cls_str in serializers.definitions:
body_spec = serializers.definitions[cls_str]
for name, field_spec in body_spec.get('properties',
{}).items():
# 忽略read_only字段
if utils.get_value(field_spec, 'readOnly', False):
continue
parameters.append({
'in':
'formData',
'name':
name,
'required':
name in utils.get_value(body_spec, 'required', []),
**field_spec
})
__update_definitions(group_spec, metadata.body_serializer)
# response
response_spec = None
if metadata.response_serializer:
response_spec = metadata.response_serializer.openapi_spec()
__update_definitions(group_spec, metadata.response_serializer)
response_shape = get_response_shape(metadata.context)
response_spec = response_shape.swagger(response_spec)
summary, description = __summary_description(
inspect.cleandoc(_handler.__doc__ or ""))
endpoint = {
'operationId':
utils.meth_str(_handler),
'summary':
summary,
'description':
description,
'consumes': ['multipart/form-data']
if has_file_field else ['application/json'],
'produces': ['application/json'],
'tags':
metadata.tags,
'parameters':
parameters,
'responses': {
"200": {
"description": None,
"examples": None,
"schema": response_spec
}
},
}
group_spec['paths'][uri_parsed][_method.lower()] = endpoint
def start(host='0.0.0.0',
port=None,
debug=False,
ssl=None,
sock=None,
workers=None,
protocol=None,
backlog=100,
stop_event=None,
register_sys_signals=True,
access_log=False,
auto_reload=False,
**kwargs):
"""
before start application, you need load your user_settings
by `wings_sanic.settings.load(**user_settings)`
:return:
"""
logging.config.dictConfig(settings.get('LOGGING_CONFIG'))
if settings.get('CORS'):
CORS(app, automatic_options=True, supports_credentials=True)
app.config.update(settings.working_settings)
try:
import uvloop
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
except ImportError:
pass
# when DEBUG==True, swagger document is available
if settings.get('DEBUG'):
app.blueprint(
WingsBluePrint.group(swagger_blueprint,
url_prefix=settings.GLOBAL_URL_PREFIX))
@app.exception(NotFound)
def handle_404_redirect(request, exception):
import re
if re.match('.*url.*not found', str(exception).lower()):
return redirect(app.url_for('swagger.static'))
return handle_exception(request, exception)
bps = [
utils.import_from_str(bp_str) for bp_str in settings.get('BLUEPRINTS')
]
app.blueprint(
WingsBluePrint.group(bps, url_prefix=settings.GLOBAL_URL_PREFIX))
@app.exception(Exception)
def handle_exception(request, exception):
exception_handler = utils.import_from_str(
settings.get('EXCEPTION_HANDLER'))
response = exception_handler(request, exception)
# set exception to response convenience for `log_response`
setattr(response, 'exception', exception)
return response
@app.get(f'{settings.GLOBAL_URL_PREFIX}/ping/',
response_serializer={
'ping': serializers.StringField('Ping-Pong', required=True)
})
async def ping(request, *args, **kwargs):
return {'ping': 'pong'}
@app.listener('after_server_start')
async def inspector_start_working(sanic, loop):
registry.set('event_loop', loop)
loop.call_soon(inspector.start)
@app.listener('after_server_start')
async def start_mq_servers(sanic, loop):
# init and start mq_server
for server_name, params in settings.get('MQ_SERVERS').items():
server_cls = utils.import_from_str(params.pop('server'))
if not issubclass(server_cls, BaseMqServer):
raise Exception(
f'{utils.cls_str_of_cls(server_cls)} is not subclass of {utils.cls_str_of_cls(BaseMqServer)}'
)
server = server_cls(loop=loop, **params)
registry.set(server_name, server, 'mq_servers')
loop.create_task(server.start())
# subscribe handlers
for server_name, handlers in registry.get_group(
'event_handlers').items():
server = registry.get(server_name, 'mq_servers')
if not server:
raise Exception(f'cannot find named "{server_name}" mq_server')
for event_name, handler, msg_type, timeout, max_retry, subscribe in handlers:
await server.subscribe(routing_key=event_name,
handler=handler,
msg_type=msg_type,
timeout=timeout,
max_retry=max_retry,
subscribe=subscribe)
app.run(host=host,
port=port or settings.get('HTTP_PORT'),
debug=debug,
ssl=ssl,
sock=sock,
workers=workers or settings.get('WORKERS'),
protocol=protocol,
backlog=backlog,
stop_event=stop_event,
register_sys_signals=register_sys_signals,
access_log=access_log,
auto_reload=auto_reload,
**kwargs)
def start():
"""
before start application, you need load your user_settings
by `wings_sanic.settings.load(**user_settings)`
:return:
"""
if not settings.get('DEV'):
logging.config.dictConfig(settings.get('LOG'))
if settings.get('CORS'):
CORS(app, automatic_options=True, supports_credentials=True)
app.config.update(settings.working_settings)
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
# when DEBUG==True, swagger document is available
if settings.get('DEBUG'):
app.blueprint(swagger_blueprint)
@app.exception(NotFound)
def handle_404_redirect(request, exception):
return redirect('/swagger/')
for bp_str in settings.get('BLUEPRINTS'):
bp = utils.import_from_str(bp_str)
app.blueprint(bp)
@app.middleware('response')
def log_response(request, response):
logger = logging.getLogger('wings_sanic')
full_path = request.path + ('?%s' % request.query_string
if request.query_string else '')
request_url = '{0} {1}'.format(request.method, full_path)
extra = {'remote_ip': request.remote_addr, 'request_uri': request_url}
exception = getattr(response, 'exception', None)
if exception:
message = "request_url: {request_url}" \
"\nrequest_body: {body}" \
"\nstatus_code: {status_code}" \
"\nresponse_content: {response}" \
.format(request_url=request_url, body=request.body,
response=response.body, status_code=response.status)
if getattr(exception, 'code', 500) / 100 == 5:
logger.error(message,
extra=extra,
exc_info=exception,
stack_info=True)
else:
logger.warning(message, extra=extra, exc_info=exception)
# 正常请求，记录少量信息
else:
message = '%s %s' % (request_url, response.status)
logger.info(message, extra=extra)
@app.exception(Exception)
def handle_exception(request, exception):
exception_handler = utils.import_from_str(
settings.get('EXCEPTION_HANDLER'))
response = exception_handler(request, exception)
# set exception to response convenience for `log_response`
setattr(response, 'exception', exception)
return response
@app.get('/ping/',
response_serializer={
'ping': serializers.StringField('Ping-Pong', required=True)
})
async def ping(request, *args, **kwargs):
return {'ping': 'pong'}
@app.listener('after_server_start')
async def inspector_start_working(sanic, loop):
registry.set('event_loop', loop)
loop.call_soon(inspector.start)
app.run(host="0.0.0.0",
port=settings.get('HTTP_PORT'),
workers=settings.get('WORKERS'),
debug=settings.get('DEBUG'),
access_log=settings.get('DEV'))
def build_spec(app, loop):
_spec['swagger'] = '2.0'
_spec.update(settings.get('SWAGGER'))
# --------------------------------------------------------------- #
# Paths
# --------------------------------------------------------------- #
paths = {}
# tags =
for uri, route in app.router.routes_all.items():
if uri.startswith("/swagger"):
continue
# Build list of methods and their handler functions
handler_type = type(route.handler)
if handler_type is CompositionView:
method_handlers = route.handler.handlers.items()
else:
method_handlers = zip(route.methods, repeat(route.handler))
methods = {}
for _method, _handler in method_handlers:
metadata = _handler.metadata
if _method == 'OPTIONS' or metadata.swagger_exclude:
continue
parameters = []
# header
for name, field in (utils.get_value(metadata.header_serializer,
'fields') or {}).items():
parameter = field.openapi_spec()
parameter.update({'in': 'header'})
parameters.append(parameter)
# path
for name, field in (utils.get_value(metadata.path_serializer,
'fields') or {}).items():
parameter = field.openapi_spec()
parameter.update({'in': 'path', 'required': True})
parameters.append(parameter)
# query
for name, field in (utils.get_value(metadata.query_serializer,
'fields') or {}).items():
parameter = field.openapi_spec()
parameter.update({'in': 'query'})
parameters.append(parameter)
# body
if metadata.body_serializer:
spec = metadata.body_serializer.openapi_spec()
parameters.append({
'in': 'body',
'name': 'body',
'required': True,
'schema': spec
})
# response
response_spec = None
if metadata.response_serializer:
response_spec = metadata.response_serializer.openapi_spec()
response_shape = get_response_shape(metadata.context)
response_spec = response_shape.swagger(response_spec)
summary, description = __summary_description(
inspect.cleandoc(_handler.__doc__ or ""))
endpoint = {
'operationId': utils.meth_str(_handler),
'summary': summary,
'description': description,
'consumes': ['application/json'],
'produces': ['application/json'],
'tags': metadata.tags,
'parameters': parameters,
'responses': {
"200": {
"description": None,
"examples": None,
"schema": response_spec
}
},
}
methods[_method.lower()] = endpoint
uri_parsed = uri
for parameter in route.parameters:
uri_parsed = re.sub('<' + parameter.name + '.*?>',
'{' + parameter.name + '}', uri_parsed)
paths[uri_parsed] = methods
# --------------------------------------------------------------- #
# Definitions
# --------------------------------------------------------------- #
_spec['definitions'] = {
cls.__name__: definition
for cls, (obj, definition) in serializers.definitions.items()
}
_spec['paths'] = paths
