python-design-patterns/template_method.py at main · CatalinStefan/python-design-patterns · GitHub

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from abc import ABC, abstractmethod


class DataStorage(ABC):
    @abstractmethod
    def setup(self):
        pass

    def check_data(self, data):
        print(f"DataStorage: checking data {data}")

    @abstractmethod
    def write_data(self, data):
        pass

    @abstractmethod
    def commit(self):
        pass

    @abstractmethod
    def log(self):
        pass

    def template(self, data):
        self.setup()
        self.check_data(data)
        self.write_data(data)
        self.commit()
        self.log()


class DatabaseDataStorage(DataStorage):
    def setup(self):
        print("Database connection established")

    def write_data(self, data):
        print(f"Database: writing data: {data}")

    def commit(self):
        print("Database: data committed successfully")

    def log(self):
        print("Database: writing completed")


class FileSystemDataStorage(DataStorage):
    def setup(self):
        print("File system ready")

    def write_data(self, data):
        print(f"FileSystem: writing data: {data}")

    def commit(self):
        print("FileSystem: data committed successfully")

    def log(self):
        print("FileSystem: writing completed")


if __name__ == '__main__':
    storage1 = DatabaseDataStorage()
    storage1.template("some data to store")

    print()

    storage2 = FileSystemDataStorage()
    storage2.template("more data")