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How to use _import_name method in tempest

Best Python code snippet using tempest_python

new_object.py

Source:new_object.py

1from logging import getLogger, LoggerAdapter2logger = getLogger(__name__)3from thewired import NamespaceConfigParser4from thewired import NamespaceConfigParsingError5import operator6import collections7from kaleidoscope.spec import AttributeSpec8import copy9import functools10class ObjectSpecConfigParser(NamespaceConfigParser):11    object_spec_keys = ['colors', 'description', 'attributes']12    def __init__(self):13        super().__init__(prefix="spec.object")14    @staticmethod15    def validate_formatter_args(formatter_args):16        """17        Description:18            make sure the formatter argument config values can become objects19        Input:20            formatter_args: a dict of argument name --> values21        Output:22            formatter_args dict with values config strings replaced with runtime objects23        """24        import logging25        import importlib26        #importlib.import_module('cush')27        name_ext = {'name_ext' : 'ObjectSpecConfigParser.validate_formatter_args'}28        #log = LoggerAdapter(logger, name_ext)29        log = logging.getLogger(__name__)30        log.setLevel(logging.DEBUG)31        final_args = dict()32        print('Verifiying and Instantiating formatter args...')33        for k,v in formatter_args.items():34            print('Checking value: "{}"'.format(v))35            #- figure out how to import prefixes to be able to eval36            _import_name = ''37            for n,prefix in enumerate(v.split('.')):38                print('Checking prefix "{}" of value "{}"'.format(prefix,v))39                _import_name += prefix40                try:41                    importlib.import_module(_import_name)42                except (ImportError, NameError) as err:43                    msg = 'Can not import formatter value prefix: "{}"'.format(_import_name)44                    print(msg)45                else:46                    print('Successfully imported "{}"'.format(_import_name))47                finally:48                    #- append the dot at the end for next iteration49                    if n < len(v.split('.')) - 1:50                        _import_name += '.'51                #- if we're at the end, try to eval52                if n == len(v.split('.')) - 1:53                    print('Trying final eval of "{}"'.format(_import_name))54                    try:55                        final_args[k] = eval(_import_name)56                    except (AttributeError, NameError, TypeError, ValueError) as err:57                        msg = 'Can not instantiate formatter value: "{}"'.format(_import_name)58                        msg += ': {}'.format(str(err))59                        raise NameSpaceConfigParsingError(msg)60                        61                    else:62                        #- if we are here, the eval succeeded63                        #- break the inner loop and continue to the next argument64                        print('Successfully instantiated formatter argument value')65        return final_args66    def parse_submap(self, dictConfig, cur_ns, prev_ns=None):67        log = LoggerAdapter(logger, {'name_ext' : 'ObjectSpecConfigParser.parse_submap'})68        log.debug("Entered: cur_ns: {} | prev_ns{}".format(cur_ns, prev_ns))69        cur_ns._add_item('specmap', dict(), iter=True)70        reduced_dictconfig = dict(dictConfig)71        for key in dictConfig.keys():72            if key in self.object_spec_keys:73                msg = list()74                msg.append("Found object spec key: key: {}".format(key))75                msg.append(" | cur_ns:{}".format(cur_ns))76                msg.append(" | prev_ns:{}".format(prev_ns))77                log.debug(''.join(msg))78                if key == 'attributes':79                    attributes = list()80                    for attribute in dictConfig[key]:81                        #- AttributeSpec can be a dict or a simple value82                        #- dict overrides the formatter callable and display length83                        if isinstance(attribute, collections.Mapping):84                            #- only 1 top-level key, the attribute name85                            _name = list(attribute.keys())[0]86                            _length = attribute[_name].get('length', None)87                            #- formatter can also be simple value (callable name) or a88                            #- dict if there are args to pass in when it is called89                            if isinstance(attribute[_name].get('formatter', None), collections.Mapping):90                                _formatter = attribute[_name]['name']91                                _formatter_args = copy.copy(attribute[_name]).pop('name')92                            else:93                                _formatter = attribute[_name].get('formatter', None)94                                _formatter_args = None95                            attributes.append(AttributeSpec(_name, _length, _formatter))96                        else:97                            attributes.append(AttributeSpec(attribute, None, None))98                    cur_ns.specmap['attributes'] = attributes99                else:100                    cur_ns.specmap[key] = dictConfig[key]101                #- don't create namespace nodes for the keys we process102                reduced_dictconfig.pop(key)103        log.debug("calling super().parse_submap...")...

core.py

Source:core.py

1"""2Core module, responsible of creating the Flask and Celery application3objects.4"""5from celery import Celery6from flask import Flask, current_app7from flask.config import Config8from datacat.utils.plugin_loading import import_object9from datacat.web.blueprints.admin import admin_bp10from datacat.web.blueprints.public import public_bp11def make_flask_app(config=None):12    app = Flask('datacat')13    app.register_blueprint(admin_bp, url_prefix='/api/1/admin')14    app.register_blueprint(public_bp, url_prefix='/api/1/data')15    app.config.update(make_config())16    if config is not None:17        app.config.update(config)18    return app19def make_celery(config):20    # celery_app = Celery('datacat',21    #                     broker=config['CELERY_BROKER_URL'],22    #                     backend=config['CELERY_RESULT_BACKEND'])23    celery_app = celery_placeholder_app24    celery_app.broker = config['CELERY_BROKER_URL']25    # celery_app.backend = config['CELERY_RESULT_BACKEND']26    celery_app.conf.update(config)27    TaskBase = celery_app.Task28    class AppContextTask(TaskBase):29        abstract = True30        def __call__(self, *args, **kwargs):31            with current_app.app_context():32                return TaskBase.__call__(self, *args, **kwargs)33    celery_app.Task = AppContextTask34    return celery_app35def make_config():36    cfg = Config('')37    cfg.from_object('datacat.settings.default')38    cfg.from_envvar('DATACAT_SETTINGS', silent=True)39    return cfg40def load_plugins(app):41    from datacat.utils.plugin_manager import PluginManager42    plugins = []43    for name in app.config['PLUGINS']:44        # Instantiate plugin class45        plugin = import_object(name)46        plugin._import_name = name47        plugins.append(plugin)48        # Setup the plugin49        plugin.setup(app)50    return PluginManager(plugins)51def finalize_app(app):52    """Prepare application for running"""53    from datacat.db import db_info54    with app.app_context():55        app.plugins = load_plugins(app)56        previously_enabled_plugins = set(db_info.get('core.plugins_enabled', []))  # noqa57        previously_installed_plugins = set(db_info.get('core.plugins_installed', []))  # noqa58        enabled_plugins = set(app.config['PLUGINS'])59        # ------------------------------------------------------------60        # Run the ``install()`` method for all the plugins that61        # were not previously installed62        plugins_to_install = enabled_plugins - previously_installed_plugins63        # ------------------------------------------------------------64        # Run the ``enable()`` method for all the plugins that65        # were not previously enabled66        plugins_to_enable = enabled_plugins - previously_enabled_plugins67        # ------------------------------------------------------------68        # Run the ``disable()`` method for all the plugins that69        # were previously enabled (and aren't anymore)70        plugins_to_disable = previously_enabled_plugins - enabled_plugins71        # Nothing will be uninstalled implicitly!72        # ------------------------------------------------------------73        # Perform the operations from above74        # ------------------------------------------------------------75        for plugin in app.plugins:76            if plugin._import_name in plugins_to_install:77                plugin.install()78            if plugin._import_name in plugins_to_enable:79                plugin.enable()80            if plugin._import_name in plugins_to_disable:81                plugin.disable()82            if plugin._import_name in enabled_plugins:83                plugin.upgrade()84        # ------------------------------------------------------------85        # Register new information about plugins86        db_info['core.plugins_enabled'] = list(enabled_plugins)87        db_info['core.plugins_installed'] = list(88            previously_installed_plugins | enabled_plugins)89def make_app(config=None):90    from datacat.db import create_tables, connect91    app = make_flask_app(config)92    celery_app = make_celery(app.config)93    celery_app.set_current()94    _adm_conn = connect(**app.config['DATABASE'])95    _adm_conn.autocommit = True96    create_tables(_adm_conn)97    finalize_app(app)98    return app...

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