[jira] [Updated] (AIRFLOW-2780) Adds IMAP Hook to interact with a mail server

["Felix Uellendall (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-2780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Felix Uellendall updated AIRFLOW-2780:
--------------------------------------
    Description: 
This Hook connects to a mail server via IMAP to be able to retrieve email attachments by using [Python's IMAP Library.|https://docs.python.org/3.6/library/imaplib.html]

Features:
- `has_mail_attachment`: Can be used in a `Sensor` to check if there is an attachment on the mail server with the given name.
- `retrieve_mail_attachments`: Can be used in an `Operator` to do sth. with the attachments returned as list of tuple.
- `download_mail_attachments`: Can be used in an `Operator` to download the attachment.

  was:
This Hook connects to a mail server via IMAP to be able to retrieve email attachments by using [Python's IMAP Library.|https://docs.python.org/3.6/library/imaplib.html]

Features:
- `has_mail_attachments`: Can be used in a `Sensor` to check if there is an attachment on the mail server with the given name.
- `retrieve_mail_attachments`: Can be used in an `Operator` to do sth. with the attachments returned as list of tuple.
- `download_mail_attachments`: Can be used in an `Operator` to download the attachment.

Tests:
- `test_connect_and_disconnect`: this tests calls the ImapHook as ContextManager
- `test_has_mail_attachments_found`
- `test_has_mail_attachments_not_found`
- `test_has_mail_attachments_with_regex_found`
- `test_has_mail_attachments_with_regex_not_found`
- `test_retrieve_mail_attachments_found`
- `test_retrieve_mail_attachments_not_found`
- `test_retrieve_mail_attachments_with_regex_found`
- `test_retrieve_mail_attachments_with_regex_not_found`
- `test_download_mail_attachments_found`
- `test_download_mail_attachments_not_found`
- `test_download_mail_attachments_with_regex_found`
- `test_download_mail_attachments_with_regex_not_found`


> Adds IMAP Hook to interact with a mail server
> ---------------------------------------------
>
>                 Key: AIRFLOW-2780
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2780
>             Project: Apache Airflow
>          Issue Type: New Feature
>            Reporter: Felix Uellendall
>            Assignee: Felix Uellendall
>            Priority: Major
>
> This Hook connects to a mail server via IMAP to be able to retrieve email attachments by using [Python's IMAP Library.|https://docs.python.org/3.6/library/imaplib.html]
> Features:
> - `has_mail_attachment`: Can be used in a `Sensor` to check if there is an attachment on the mail server with the given name.
> - `retrieve_mail_attachments`: Can be used in an `Operator` to do sth. with the attachments returned as list of tuple.
> - `download_mail_attachments`: Can be used in an `Operator` to download the attachment.



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