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    【已解决】Flask中如何用工厂模式初始化flask-restful的api

    Flask crifan 2044浏览 0评论
    折腾：
    【未解决】用蓝图和工厂模式去优化现有Flask项目代码结构
    期间，需要去搞清楚，对于Flask-restful的api，之前是：
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    class RobotQaAPI(Resource):
     
        def processResponse(self,
                            respDict,
                            voiceName=MS_TTS_VOICE_NAME,
                            voiceRate=MS_TTS_VOICE_RATE,
                            voiceVolume=MS_TTS_VOICE_VOLUME):
            """
                process response dict before return
                    generate audio for response text part
            """
            global log, gTempAudioFolder
     
            unicodeText = respDict["data"]["response"]["text"]
            log.info("unicodeText=%s")
    ......
     
    api.add_resource(RobotQaAPI, '/qa', endpoint='qa')
    如果要改为工厂模式去初始化，如何改造。
    flask-restful api factory
    Delayed initialization — init_app() not working · Issue #203 · flask-restful/flask-restful
    rest – python flask-restful blueprint and factory pattern work together? – Stack Overflow
    python – 404 when accessing resource Flask-Restful – Stack Overflow
    去改为：
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    from factory import create_app, mongo, fsCollection, log
     
    from resources.tts import testAudioSynthesis, initAudioService
    from resources.qa import RobotQaAPI
    from resources.asr import RobotAsrAPI, initASR
    from resources.files import GridfsAPI, TmpAudioAPI
     
    # api = Api(app)
    api = Api()
    log.info("api=%s", api)
    api.add_resource(RobotQaAPI, '/qa', endpoint='qa')
    api.add_resource(RobotAsrAPI, '/asr/language/<string:language>', endpoint='asr')
    api.add_resource(GridfsAPI, '/files/<fileId>', '/files/<fileId>/<fileName>', endpoint='gridfs')
    api.add_resource(TmpAudioAPI, '/tmp/audio/<filename>', endpoint='TmpAudio')
     
    api.init_app(app)
    待后续调试，看看是否正常。
    【总结】
    最终代码是：
    app.py
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    import os
     
    from conf.app import settings
    from factory import create_app
    app = create_app(settings)
    app.app_context().push()
    if __name__ == "__main__":
        app.run(
            host=settings.FLASK_HOST,
            port=settings.FLASK_PORT,
            debug=settings.DEBUG,
            use_reloader=False
        )
    factory.py
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    import os
    from flask import Flask
    ...
    from flask_restful import Api
    ...
    from conf.app import settings
    ...
    from flask import g
    ################################################################################
    # Global Function
    ################################################################################
     
    def create_app(config_object, init_extensions=True):
     
        ...
        app.config.from_object(config_object)
        with app.app_context():
         
        ...
            if init_extensions:
                register_extensions(app)
        return app
     
     
    def register_extensions(app):
     
        # api = Api(app)
        api = create_rest_api(app)
        log.debug("api=%s", api)
        g.api = api
     
        return app
     
     
    def create_rest_api(app):
        from resources.qa import RobotQaAPI
        from resources.asr import RobotAsrAPI
        from resources.files import GridfsAPI, TmpAudioAPI
     
        rest_api = Api()
        rest_api.add_resource(RobotQaAPI, '/qa', endpoint='qa')
        rest_api.add_resource(RobotAsrAPI, '/asr/language/<string:language>', endpoint='asr')
        rest_api.add_resource(GridfsAPI, '/files/<fileId>', '/files/<fileId>/<fileName>', endpoint='gridfs')
        rest_api.add_resource(TmpAudioAPI, '/tmp/audio/<filename>', endpoint='TmpAudio')
     
        rest_api.init_app(app)
        return rest_api
     
    ...
    而不同模块中是：
    resources/qa.py
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    from flask_restful import reqparse
    from conf.app import settings
    from flask import g
     
    app = g.app
    log = g.log
    fsCollection = g.fsCollection
     
     
    class RobotQaAPI(Resource):
     
        def get(self):
     
     
            ...
            log.info("parser=%s", parser)

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