Package: ul-api-utils
Generic library api-utilsProvides common api-related functionality that can be used across different services.Contains all api-related packages as dependencies.
If you need to use some package that is not available in your service, you should add it here.Common functionality & ModulesThis section describes some classes or methods that are available for use in all services that use api-utils.ApiResource moduleApiRequestQueryclassApiRequestQuery(BaseModel):sort:Optional[str]=Nonefilter:Optional[str]=Nonelimit:Optional[int]=Noneoffset:Optional[int]=Nonepage:Optional[int]=NoneProvides basic functionality to the API request.Validation of empty values (replaces empty string to null/None) in API requests.Pagination if provided.Filtering by filter params if provided.Sorting by sort params if provided.If you want to add some additional by-default behavior to ApiRequestQuery than you have to add it here.ApiResourceclassApiResource:def__init__(self,*,logger:logging.Logger,debugger_enabled:bool,type:ApiResourceType,config:ApiSdkConfig,access:PermissionDefinition,headers:Mapping[str,str],api_resource_config:Optional[ApiResourceConfig]=None,fn_typing:ApiResourceFnTyping,)->None:self._debugger_enabled=debugger_enabledself._token:Optional[ApiSdkJwt]=Noneself._token_raw:Optional[str]=Noneself._type=typeself._config=configself._api_resource_config=api_resource_configorApiResourceConfig()self._fn_typing=fn_typingself._logger=loggerself._headers=headersself._access=accessself._method=ApiMethod(str(request.method).strip().upper())# todo: move it in host functionself._internal_use__files_to_clean:Set[str]=set()self._now=datetime.now()Provides basic functionality to the API resource. Defines common properties for every API resourse.ApiResource propertiesDesriptionApiResource.debugger_enabledReturns boolean value indicating that debugger is enabled/disabled.ApiResource.loggerReturns ApiResource logger.ApiResource.methodReturns ApiResource API method (GET, POST, PUT, PATCH, DELETE, OPTIONS).ApiResource.request_filesReturns files that are attached to Flask API request.ApiResource.request_headersReturns request headers that are attached to request.ApiResource.request_infoReturns request information that is attached to request (user-agent, ip).ApiResource.auth_token, ApiResource.auth_token_rawReturns token or raw token.Internal API moduleInternal APIProvidesInternalAPIclass with basic functionality to support the requests between internal services.
Implements a wrapper for all types of requests: GET, POST, PUT, PATCH, DELETE.Internal API ResponseProvidesInternalApiResponseclass with basic properties of Response, such as:
.ok, .total_count, .count, .errors, .payload,
.status_code, .result_bytes, .result_text, .result_json.API SDK ModuleProvides debugger setup for every service that uses it, useful decorators to build views, etc.
In order to use it in another service, SDK should be initialized and here an example.web_sdk=ApiSdk(ApiSdkConfig(permissions=your_permissions,jwt_validator=your_validator,not_found_template=path/to/template,rate_limit=your_rate_limit,other_params_are_listed_below=please_read_them))API SDK ConfigProvides configuration for the API SDK.classApiSdkConfig(BaseModel):permissions:Optional[Union[Callable[[],PermissionRegistry],PermissionRegistry]]=Nonepermissions_check_enabled:bool=True# GLOBAL CHECK OF ACCESS AND PERMISSIONS ENABLEpermissions_validator:Optional[Callable[[ApiSdkJwt,PermissionDefinition],bool]]=Nonejwt_validator:Optional[Callable[[ApiSdkJwt],bool]]=Nonejwt_environment_check_enabled:bool=Truehttp_auth:Optional[ApiSdkHttpAuth]=Nonestatic_url_path:Optional[str]=Nonenot_found_template:Optional[str]=Nonerate_limit:Union[str,List[str]]='100/minute'# [count (int)] [per|/] [second|minute|hour|day|month|year][s]rate_limit_storage_uri:str=''# supports url of redis, memcached, mongodbrate_limit_identify:Union[ApiSdkIdentifyTypeEnum,Callable[[],str]]=ApiSdkIdentifyTypeEnum.DISABLED# must be None if disabledapi_route_path_prefix:str='/api'classConfig:extra=Extra.forbidallow_mutation=Falsefrozen=Truearbitrary_types_allowed=TrueAlso, API SDK provides useful decorators that help to create views (web based, API endpoints, file download endpoints).@web_sdk.html_view(method,path,access=permission,config=ApiResourceConfig)@web_sdk.rest_api(method,path,access=permission,config=ApiResourceConfig,v='v1')Worker SDKProvides a useful decorator for message handling that adds logging, Sentry monitoring and WorkerContext.fromsrc.conf.worker_sdkimportworker_sdkinitialized_worker=worker_sdk.init(__name__)__all__=('initialized_worker',)@initialized_worker.handle_message()defsome_worker_function(params):...Custom Shared ValidatorsLibrary has some commonly-used validators available for use in other services to avoid code duplication.
If you think that some services will benefit from adding a new one that can be shared, you are welcome.Validate UUIDdefvalidate_uuid4(uuid:Any)->None:try:UUID(uuid,version=4)exceptValueError:raiseSimpleValidateApiError('invalid uuid')Validate empty objectdefvalidate_empty_object(obj_id:str,model:Any)->Any:obj=model.query.filter_by(id=obj_id).first()ifnotobj:raiseSimpleValidateApiError(f'{model.__name__}data was not found')returnobjCustom ExceptionsExceptionDesriptionAbstractApiErrorServices can inherit from this error and create own service-oriented API Exceptions. Should not be raised.AbstractInternalApiErrorServices can inherit from this error and create own service-oriented Internal-API Exceptions. Should not be raised.RequestAbstractInternalApiErrorServices can inherit from this error and create own Exceptions, that should be used before sending a request to another service. Should not be raised.ResponseAbstractInternalApiErrorServices can inherit from this error and create own Exceptions, that should be used after getting a response from another service. Should not be raised.ResponseFormatInternalApiErrorShould be raised when the response format from another service is incorrect.ResponseJsonSchemaInternalApiErrorShould be raised when the response schema from another service is incorrect.ResponsePayloadTypeInternalApiErrorShould be raised when the response payload types from another services aren't matching.Server5XXInternalApiErrorShould be raised when the response status from another service is 5xx. (something wrong at receiving end)Client4XXInternalApiErrorShould be raised when the response status from another service is 4xx. (something wrong at sender end)UserAbstractApiErrorServices can inherit from this error and create own Exceptions, that should be used only to stop request handling and only in API-routes. Should not be raised.ValidationListApiErrorShould be raised when the incoming request is invalid because of validation.ValidateApiErrorShould be raised when the incoming request is invalid because of validation.AccessApiErrorShould be raised when API-call sender does not have an access to the API.AccessApiErrorShould be raised when API-call sender do es not have an access to the API.PermissionDeniedApiErrorShould be raised when API-call sender does not have required permissions to access the API.NoResultFoundApiErrorShould be raised when we can't return a response because required data does not exist.HasAlreadyExistsApiErrorShould be raised when we can't create a new record because the same one already exists.Adding new api-related packageFirst, try to understand why do you need this library and what exactly can you do with it. Look at the list of
already existing libraries and think if they can fulfill your needs.Check this library for deprecation, does it have enough maintenance, library dependencies.
If all above satisfies you, perform next steps:Add the package name and version toPipfileunder[packages]section. Example:alembic = "==1.8.1".Runpipenv install.Add the package name and version tosetup.pytoinstall-requiressection.Commit changes.git commit -m "Add dependency *library-name*".Run version patch:pipenv run version_patch.Push changes directly to devgit push origin dev --tagsor raise MR for your changes to be reviewed.ExampleFLASK_DEBUG=1FLASK_ENV=developmentFLASK_APP=example.example_appAPPLICATION_DIR=$(pwd)/exampleAPPLICATION_DEBUG=1flaskrun--port5001How to debug using PyCharm Professional:How to create keyspipenvrunenc_keys--algorithm=RS256--service-namesome--follower-servicesfoobar--jwt-permissions-moduleexample.permissions--jwt-user-id03670a66-fb50-437e-96ae-b42bb83e3d04--jwt-environment=localpipenvrunenc_keys--algorithmES256--service-namesome--follower-servicesfoobar--jwt-permissions-moduleexample.permissions--jwt-user-id03670a66-fb50-437e-96ae-b42bb83e3d04--jwt-environment=local