85 lines
3.5 KiB
Python
85 lines
3.5 KiB
Python
import ssl
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from smtplib import SMTP
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from typing import Optional
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from cpl.environment.environment_abc import ApplicationEnvironmentABC
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from cpl.logging.logger_abc import LoggerABC
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from cpl.mailing.email import EMail
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from cpl.mailing.email_client_abc import EMailClientABC
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from cpl.mailing.email_client_settings import EMailClientSettings
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from cpl.utils.credential_manager import CredentialManager
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class EMailClient(EMailClientABC):
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def __init__(self, environment: ApplicationEnvironmentABC, logger: LoggerABC, mail_settings: EMailClientSettings):
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"""
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Service to send emails
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:param environment:
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:param logger:
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:param mail_settings:
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"""
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EMailClientABC.__init__(self)
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self._environment = environment
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self._mail_settings = mail_settings
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self._logger = logger
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self._server: Optional[SMTP] = None
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self.create()
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def create(self):
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"""
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Creates connection
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:return:
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"""
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self._logger.trace(__name__, f'Started {__name__}.create')
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self.connect()
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self._logger.trace(__name__, f'Stopped {__name__}.create')
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def connect(self):
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self._logger.trace(__name__, f'Started {__name__}.connect')
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try:
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self._logger.debug(__name__, f'Try to connect to {self._mail_settings.host}:{self._mail_settings.port}')
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self._server = SMTP(self._mail_settings.host, self._mail_settings.port)
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self._logger.info(__name__, f'Connected to {self._mail_settings.host}:{self._mail_settings.port}')
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self._logger.debug(__name__, 'Try to start tls')
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self._server.starttls(context=ssl.create_default_context())
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self._logger.info(__name__, 'Started tls')
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except Exception as e:
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self._logger.error(__name__, 'Cannot connect to mail server', e)
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self._logger.trace(__name__, f'Stopped {__name__}.connect')
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def login(self):
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"""
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Login to server
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:return:
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"""
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self._logger.trace(__name__, f'Started {__name__}.login')
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try:
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self._logger.debug(__name__, f'Try to login {self._mail_settings.user_name}@{self._mail_settings.host}:{self._mail_settings.port}')
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self._server.login(self._mail_settings.user_name, CredentialManager.decrypt(self._mail_settings.credentials))
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self._logger.info(__name__, f'Logged on as {self._mail_settings.user_name} to {self._mail_settings.host}:{self._mail_settings.port}')
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except Exception as e:
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self._logger.error(__name__, 'Cannot login to mail server', e)
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self._logger.trace(__name__, f'Stopped {__name__}.login')
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def send_mail(self, email: EMail):
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self._logger.trace(__name__, f'Started {__name__}.send_mail')
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try:
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self.login()
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email.body += f'\n\nDies ist eine automatische E-Mail.' \
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f'\nGesendet von {self._environment.application_name}-{self._environment.environment_name}@{self._environment.host_name} für ' \
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f'{self._environment.customer}.'
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self._logger.debug(__name__, f'Try to send email to {email.receiver_list}')
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self._server.sendmail(self._mail_settings.user_name, email.receiver_list, email.get_content(self._mail_settings.user_name))
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self._logger.info(__name__, f'Sent email to {email.receiver_list}')
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except Exception as e:
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self._logger.error(__name__, f'Cannot send mail to {email.receiver_list}', e)
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self._logger.trace(__name__, f'Stopped {__name__}.send_mail')
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