aiohttp.web.HTTPBadRequest

Here are the examples of the python api aiohttp.web.HTTPBadRequest taken from open source projects. By voting up you can indicate which examples are most useful and appropriate.

    async def vote(self, request):
        question_id = int(request.match_info['question_id'])
        data = await request.post()
        try:
            choice_id = int(data['choice'])
        except (KeyError, TypeError, ValueError) as e:
            raise web.HTTPBadRequest(
                text='You have not specified choice value') from e
        try:
            await db.vote(self.postgres, question_id, choice_id)
        except db.RecordNotFound as e:
            raise web.HTTPNotFound(text=str(e))
        router = request.app.router
        url = router['results'].url(parts={'question_id': question_id})
        return web.HTTPFound(location=url)

    def get_project(self, project_id):
        """
        Returns a Project instance.

        :param project_id: Project identifier

        :returns: Project instance
        """

        try:
            UUID(project_id, version=4)
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(text="Project ID {} is not a valid UUID".format(project_id))

        if project_id not in self._projects:
            raise aiohttp.web.HTTPNotFound(text="Project ID {} doesn't exist".format(project_id))
        return self._projects[project_id]

async def vote(request):
    async with request.app['db'].acquire() as conn:
        question_id = int(request.match_info['question_id'])
        data = await request.post()
        try:
            choice_id = int(data['choice'])
        except (KeyError, TypeError, ValueError) as e:
            raise web.HTTPBadRequest(
                text='You have not specified choice value') from e
        try:
            await db.vote(conn, question_id, choice_id)
        except db.RecordNotFound as e:
            raise web.HTTPNotFound(text=str(e))
        router = request.app.router
        url = router['results'].url(parts={'question_id': question_id})
        return web.HTTPFound(location=url)

    @asyncio.coroutine
    def user_info(self, loop=None, **kwargs):
        """Load user information from provider."""
        if not self.user_info_url:
            raise NotImplementedError('The provider doesnt support user_info method.')

        response = yield from self.request('GET', self.user_info_url, loop=loop, **kwargs)
        if response.status / 100 > 2:
            raise web.HTTPBadRequest(reason='Failed to obtain User information. '
                                     'HTTP status code: %s' % response.status)
        data = (yield from response.json())
        user = User(**dict(self.user_parse(data)))
        return user, data

    @asyncio.coroutine
    def get_request_token(self, loop=None, **params):
        """Get a request_token and request_token_secret from OAuth1 provider."""
        params = dict(self.params, **params)
        response = yield from self.request('GET', self.request_token_url, params=params, loop=loop)
        if response.status / 100 > 2:
            raise web.HTTPBadRequest(
                reason='Failed to obtain OAuth 1.0 request token. HTTP status code: %s'
                % response.status)

        data = yield from response.text()
        data = dict(parse_qsl(data))

        response.close()

        self.oauth_token = data.get('oauth_token')
        self.oauth_token_secret = data.get('oauth_token_secret')
        return self.oauth_token, self.oauth_token_secret, data

    @asyncio.coroutine
    def world_image(self, request):
        """ 显示正确的镇守府图片。
        舰娘游戏中客户端FLASH请求的镇守府图片是根据FLASH本身的URL生成的，需要根据用户所在的镇守府IP为其显示正确的图片。

        :param request: aiohttp.web.Request
        :return: aiohttp.web.HTTPFound or aiohttp.web.HTTPBadRequest
        """
        size = request.match_info['size']
        session = yield from get_session(request)
        world_ip = session['world_ip']
        if world_ip:
            ip_sections = map(int, world_ip.split('.'))
            image_name = '_'.join([format(x, '03') for x in ip_sections]) + '_' + size
            if image_name in self.worlds:
                body = self.worlds[image_name]
            else:
                url = 'http://203.104.209.102/kcs/resources/image/world/' + image_name + '.png'
                coro = aiohttp.get(url, connector=self.connector)
                try:
                    response = yield from asyncio.wait_for(coro, timeout=5)
                except asyncio.TimeoutError:
                    return aiohttp.web.HTTPBadRequest()
                body = yield from response.read()
                self.worlds[image_name] = body
            return aiohttp.web.Response(body=body, headers={'Content-Type': 'image/png', 'Cache-Control': 'no-cache'})
        else:
            return aiohttp.web.HTTPBadRequest()

    def get_vm(self, vm_id, project_id=None):
        """
        Returns a VM instance.

        :param vm_id: VM identifier
        :param project_id: Project identifier

        :returns: VM instance
        """

        if project_id:
            # check the project_id exists
            project = ProjectManager.instance().get_project(project_id)

        try:
            UUID(vm_id, version=4)
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(text="VM ID {} is not a valid UUID".format(vm_id))

        if vm_id not in self._vms:
            raise aiohttp.web.HTTPNotFound(text="VM ID {} doesn't exist".format(vm_id))

        vm = self._vms[vm_id]
        if project_id:
            if vm.project.id != project.id:
                raise aiohttp.web.HTTPNotFound(text="Project ID {} doesn't belong to VM {}".format(project_id, vm.name))

        return vm

    def get_device(self, device_id, project_id=None):
        """
        Returns a device instance.

        :param device_id: Device identifier
        :param project_id: Project identifier

        :returns: Device instance
        """

        if project_id:
            # check the project_id exists
            project = ProjectManager.instance().get_project(project_id)

        try:
            UUID(device_id, version=4)
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(text="Device ID} is not a valid UUID".format(device_id))

        if device_id not in self._devices:
            raise aiohttp.web.HTTPNotFound(text="Device ID {} doesn't exist".format(device_id))

        device = self._devices[device_id]
        if project_id:
            if device.project.id != project.id:
                raise aiohttp.web.HTTPNotFound(text="Project ID {} doesn't belong to device {}".format(project_id, device.name))

        return device

    def __init__(self, name=None, project_id=None, path=None, location=None, temporary=False):

        self._name = name
        if project_id is None:
            self._id = str(uuid4())
        else:
            try:
                UUID(project_id, version=4)
            except ValueError:
                raise aiohttp.web.HTTPBadRequest(text="{} is not a valid UUID".format(project_id))
            self._id = project_id

        self._location = None
        if location is None:
            self._location = self._config().get("project_directory", self._get_default_project_directory())
        else:
            self.location = location

        self._vms = set()
        self._vms_to_destroy = set()
        self.temporary = temporary
        self._used_tcp_ports = set()
        self._used_udp_ports = set()

        # clients listening for notifications
        self._listeners = set()

        if path is None:
            path = os.path.join(self._location, self._id)
        try:
            os.makedirs(path, exist_ok=True)
        except OSError as e:
            raise aiohttp.web.HTTPInternalServerError(text="Could not create project directory: {}".format(e))
        self.path = path

        log.info("Project {id} with path '{path}' created".format(path=self._path, id=self._id))

    def json(self, answer):
        """
        Set the response content type to application/json and serialize
        the content.

        :param anwser The response as a Python object
        """

        self.content_type = "application/json"
        if hasattr(answer, '__json__'):
            answer = answer.__json__()
        elif isinstance(answer, list):
            newanswer = []
            for elem in answer:
                if hasattr(elem, '__json__'):
                    elem = elem.__json__()
                newanswer.append(elem)
            answer = newanswer
        if self._output_schema is not None:
            try:
                jsonschema.validate(answer, self._output_schema)
            except jsonschema.ValidationError as e:
                log.error("Invalid output query. JSON schema error: {}".format(e.message))
                raise aiohttp.web.HTTPBadRequest(text="{}".format(e))
        self.body = json.dumps(answer, indent=4, sort_keys=True).encode('utf-8')

@asyncio.coroutine
def parse_request(request, input_schema, raw):
    """Parse body of request and raise HTTP errors in case of problems"""

    content_length = request.content_length
    if content_length is not None and content_length > 0 and not raw:
        body = yield from request.read()
        try:
            request.json = json.loads(body.decode('utf-8'))
        except ValueError as e:
            request.json = {"malformed_json": body.decode('utf-8')}
            raise aiohttp.web.HTTPBadRequest(text="Invalid JSON {}".format(e))
    else:
        request.json = {}

    # Parse the query string
    if len(request.query_string) > 0:
        for (k, v) in urllib.parse.parse_qs(request.query_string).items():
            request.json[k] = v[0]

    if input_schema:
        try:
            jsonschema.validate(request.json, input_schema)
        except jsonschema.ValidationError as e:
            log.error("Invalid input query. JSON schema error: {}".format(e.message))
            raise aiohttp.web.HTTPBadRequest(text="Invalid JSON: {} in schema: {}".format(
                e.message,
                json.dumps(e.schema)))

    return request

    @classmethod
    def _route(cls, method, path, *args, **kw):
        # This block is executed only the first time
        output_schema = kw.get("output", {})
        input_schema = kw.get("input", {})
        api_version = kw.get("api_version", 1)
        raw = kw.get("raw", False)

        # If it's a JSON api endpoint just register the endpoint an do nothing
        if api_version is None:
            cls._path = path
        else:
            cls._path = "/v{version}{path}".format(path=path, version=api_version)

        def register(func):
            route = cls._path

            handler = func.__module__.replace("_handler", "").replace("gns3server.handlers.api.", "")
            cls._docuementation.setdefault(handler, {})
            cls._docuementation[handler].setdefault(route, {"api_version": api_version,
                                                           "methods": []})

            cls._docuementation[handler][route]["methods"].append({
                "method": method,
                "status_codes": kw.get("status_codes", {200: "OK"}),
                "parameters": kw.get("parameters", {}),
                "output_schema": output_schema,
                "input_schema": input_schema,
                "description": kw.get("description", ""),
            })
            func = asyncio.coroutine(func)

            @asyncio.coroutine
            def control_schema(request):
                # This block is executed at each method call

                server_config = Config.instance().get_section_config("Server")

                # Authenticate
                response = cls.authenticate(request, route, server_config)
                if response:
                    return response

                # Non API call
                if api_version is None or raw is True:
                    response = Response(request=request, route=route, output_schema=output_schema)

                    request = yield from parse_request(request, None, raw)
                    yield from func(request, response)
                    return response

                # API call
                try:
                    request = yield from parse_request(request, input_schema, raw)
                    record_file = server_config.get("record")
                    if record_file:
                        try:
                            with open(record_file, "a", encoding="utf-8") as f:
                                f.write("curl -X {} 'http://{}{}' -d '{}'".format(request.method, request.host, request.path_qs, json.dumps(request.json)))
                                f.write("\n")
                        except OSError as e:
                            log.warn("Could not write to the record file {}: {}".format(record_file, e))
                    response = Response(request=request, route=route, output_schema=output_schema)
                    yield from func(request, response)
                except aiohttp.web.HTTPBadRequest as e:
                    response = Response(request=request, route=route)
                    response.set_status(e.status)
                    response.json({"message": e.text, "status": e.status, "path": route, "request": request.json, "method": request.method})
                except aiohttp.web.HTTPException as e:
                    response = Response(request=request, route=route)
                    response.set_status(e.status)
                    response.json({"message": e.text, "status": e.status})
                except (VMError, UbridgeError) as e:
                    log.error("VM error detected: {type}".format(type=type(e)), exc_info=1)
                    response = Response(request=request, route=route)
                    response.set_status(409)
                    response.json({"message": str(e), "status": 409})
                except asyncio.futures.CancelledError as e:
                    log.error("Request canceled")
                    response = Response(request=request, route=route)
                    response.set_status(408)
                    response.json({"message": "Request canceled", "status": 408})
                except aiohttp.ClientDisconnectedError:
                    log.warn("Client disconnected")
                    response = Response(request=request, route=route)
                    response.set_status(408)
                    response.json({"message": "Client disconnected", "status": 408})
                except ConnectionResetError:
                    log.error("Client connection reset")
                    response = Response(request=request, route=route)
                    response.set_status(408)
                    response.json({"message": "Connection reset", "status": 408})
                except Exception as e:
                    log.error("Uncaught exception detected: {type}".format(type=type(e)), exc_info=1)
                    response = Response(request=request, route=route)
                    response.set_status(500)
                    CrashReport.instance().capture_exception(request)
                    exc_type, exc_value, exc_tb = sys.exc_info()
                    lines = traceback.format_exception(exc_type, exc_value, exc_tb)
                    if api_version is not None:
                        tb = "".join(lines)
                        response.json({"message": tb, "status": 500})
                    else:
                        tb = "\n".join(lines)
                        response.html("<h1>Internal error</h1><pre>{}</pre>".format(tb))

                return response

            @asyncio.coroutine
            def vm_concurrency(request):
                """
                To avoid strange effect we prevent concurrency
                between the same instance of the vm
                """

                if "vm_id" in request.match_info or "device_id" in request.match_info:
                    vm_id = request.match_info.get("vm_id")
                    if vm_id is None:
                        vm_id = request.match_info["device_id"]
                    cls._vm_locks.setdefault(vm_id, {"lock": asyncio.Lock(), "concurrency": 0})
                    cls._vm_locks[vm_id]["concurrency"] += 1

                    with (yield from cls._vm_locks[vm_id]["lock"]):
                        response = yield from control_schema(request)
                    cls._vm_locks[vm_id]["concurrency"] -= 1

                    # No more waiting requests, garbage collect the lock
                    if cls._vm_locks[vm_id]["concurrency"] <= 0:
                        del cls._vm_locks[vm_id]
                else:
                    response = yield from control_schema(request)
                return response

            cls._routes.append((method, cls._path, vm_concurrency))

            return vm_concurrency
        return register

    @asyncio.coroutine
    def get_access_token(self, oauth_verifier, request_token=None, loop=None, **params):
        """Get access_token from OAuth1 provider.

        :returns: (access_token, access_token_secret, provider_data)
        """
        # Possibility to provide REQUEST DATA to the method
        if not isinstance(oauth_verifier, str) and self.shared_key in oauth_verifier:
            oauth_verifier = oauth_verifier[self.shared_key]

        if request_token and self.oauth_token != request_token:
            raise web.HTTPBadRequest(
                reason='Failed to obtain OAuth 1.0 access token. Request token is invalid')

        response = yield from self.request('POST', self.access_token_url, params={
            'oauth_verifier': oauth_verifier, 'oauth_token': request_token}, loop=loop)
        if response.status / 100 > 2:
            raise web.HTTPBadRequest(
                reason='Failed to obtain OAuth 1.0 access token. HTTP status code: %s'
                % response.status)

        data = yield from response.text()
        data = dict(parse_qsl(data))

        response.close()

        self.oauth_token = data.get('oauth_token')
        self.oauth_token_secret = data.get('oauth_token_secret')

        return self.oauth_token, self.oauth_token_secret, data

    @asyncio.coroutine
    def get_access_token(self, code, loop=None, redirect_uri=None, **payload):
        """Get an access_token from OAuth provider.

        :returns: (access_token, provider_data)
        """
        # Possibility to provide REQUEST DATA to the method
        if not isinstance(code, str) and self.shared_key in code:
            code = code[self.shared_key]
        payload.setdefault('grant_type', 'authorization_code')
        payload.update({
            'client_id': self.client_id,
            'client_secret': self.client_secret,
            'code': code,
        })

        redirect_uri = redirect_uri or self.params.get('redirect_uri')
        if redirect_uri:
            payload['redirect_uri'] = redirect_uri

        response = yield from self.request('POST', self.access_token_url, data=payload, loop=loop)
        if 'json' in response.headers.get('CONTENT-TYPE'):
            data = yield from response.json()

        else:
            data = yield from response.text()
            data = dict(parse_qsl(data))

        try:
            self.access_token = data['access_token']
        except Exception:
            raise web.HTTPBadRequest(reason='Failed to obtain OAuth access token.')
        finally:
            response.close()

        return self.access_token, data

async def data_factory(app, handler):
    async def parse_data(request):
        logging.info('data_factory...')
        if request.method in ('POST', 'PUT'):
            if not request.content_type:
                return web.HTTPBadRequest(text='Missing Content-Type.')
            content_type = request.content_type.lower()
            if content_type.startswith('application/json'):
                request.__data__ = await request.json()
                if not isinstance(request.__data__, dict):
                    return web.HTTPBadRequest(text='JSON body must be object.')
                logging.info('request json: %s' % request.__data__)
            elif content_type.startswith(('application/x-www-form-urlencoded', 'multipart/form-data')):
                params = await request.post()
                request.__data__ = dict(**params)
                logging.info('request form: %s' % request.__data__)
            else:
                return web.HTTPBadRequest(text='Unsupported Content-Type: %s' % content_type)
        elif request.method == 'GET':
            qs = request.query_string
            request.__data__ = {k: v[0] for k, v in parse.parse_qs(qs, True).items()}
            logging.info('request query: %s' % request.__data__)
        else:
            request.__data__ = dict()
        return await handler(request)
    return parse_data

    async def __call__(self, request):  # 任何类，只需要定义一个__call__()方法，就可以直接对实例进行调用
        # 获取函数的参数表
        required_args = inspect.signature(self._func).parameters
        logging.info('required args: %s' % required_args)

        # 获取从GET或POST传进来的参数值，如果函数参数表有这参数名就加入
        kw = {arg: value for arg, value in request.__data__.items() if arg in required_args}

        # 获取match_info的参数值，例如@get('/blog/{id}')之类的参数值
        kw.update(request.match_info)

        # 如果有request参数的话也加入
        if 'request' in required_args:
            kw['request'] = request

        # 检查参数表中有没参数缺失
        for key, arg in required_args.items():
            # request参数不能为可变长参数
            if key == 'request' and arg.kind in (arg.VAR_POSITIONAL, arg.VAR_KEYWORD):
                return web.HTTPBadRequest(text='request parameter cannot be the var argument.')
            # 如果参数类型不是变长列表和变长字典，变长参数是可缺省的
            if arg.kind not in (arg.VAR_POSITIONAL, arg.VAR_KEYWORD):
                # 如果还是没有默认值，而且还没有传值的话就报错
                if arg.default == arg.empty and arg.name not in kw:
                    return web.HTTPBadRequest(text='Missing argument: %s' % arg.name)

        logging.info('call with args: %s' % kw)
        try:
            return await self._func(**kw)
        except APIError as e:
            return dict(error=e.error, data=e.data, message=e.message)

	def get_last_events(self, request):
		try:
			last_event_id = int(request.headers.get('Last-Event-Id', request.GET.get('last-event-id')))
		except (ValueError, TypeError):
			last_event_id = None
		interval = request.GET.get('interval')
		if interval is not None and last_event_id is None:
			last_event_id = 0
		if last_event_id is not None:
			events = self.metadata.tables['events']
			query = sqlalchemy.select([
				events.c.id, events.c.event, events.c.data, events.c.time
			])
			query = query.where(events.c.id > last_event_id)
			if interval is not None:
				query = query.where(events.c.time > sqlalchemy.func.current_timestamp() - sqlalchemy.cast(interval, sqlalchemy.Interval))
			query = query.order_by(events.c.id)
			try:
				with self.engine.begin() as conn:
					return [
						{'id': id, 'event': event, 'data': dict(data, time=time.isoformat())}
						for id, event, data, time in conn.execute(query)
					]
			except sqlalchemy.exc.DataError as e:
				raise aiohttp.web.HTTPBadRequest from e
		return []