mirror of
https://github.com/gryf/slack-backup.git
synced 2025-12-17 19:40:21 +01:00
282 lines
9.6 KiB
Python
282 lines
9.6 KiB
Python
"""
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Create backup for certain date for specified channel in slack
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"""
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from datetime import datetime
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import getpass
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import logging
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import slackclient
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from slack_backup import db
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from slack_backup import objects as o
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from slack_backup import download
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class Client(object):
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"""
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This class is intended to provide an interface for getting, storing and
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querying data fetched out using Slack API.
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"""
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def __init__(self, args):
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self.slack = slackclient.SlackClient(args.token)
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self.engine = db.connect(args.database)
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self.session = db.Session()
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self.selected_channels = args.channels
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self.user = args.user
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self.password = args.password
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if not self.user and not self.password:
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logging.warning('No media will be downloaded, due to not '
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'providing credentials for a slack account')
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elif not self.user and self.password:
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logging.warning('No media will be downloaded, due to not '
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'providing username for a slack account')
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elif self.user and not self.password:
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self.password = getpass.getpass(prompt='Provide password for '
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'your slack account: ')
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self.q = self.session.query
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self.downloader = download.Download(args)
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def update(self):
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"""
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Perform an update, store data to db
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"""
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self.downloader.authorize()
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self.update_users()
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self.update_channels()
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self.update_history()
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def update_channels(self):
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"""Fetch and update channel list with current state in db"""
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logging.info("Fetching and update channels information in DB")
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result = self._channels_list()
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if not result:
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return
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for data in result:
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channel = self.q(o.Channel).\
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filter(o.Channel.slackid == data['id']).one_or_none()
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if not channel:
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channel = o.Channel()
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self.session.add(channel)
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self._update_channel(channel, data)
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self.session.commit()
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def update_users(self):
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"""Fetch and update user list with current state in db"""
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logging.info("Fetching and updating user information in DB")
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result = self.slack.api_call("users.list", presence=0)
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if not result.get("ok"):
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logging.error(result['error'])
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return
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for user_data in result['members']:
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user = self.q(o.User).\
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filter(o.User.slackid == user_data['id']).one_or_none()
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if user:
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user.update(user_data)
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else:
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user = o.User(user_data)
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self.session.add(user)
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self.session.flush()
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if user.profile.image_original:
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user.profile.image_path = self.downloader.\
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download(user.profile.image_original, 'avatar')
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self.session.commit()
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def update_history(self):
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"""
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Get the latest or all messages out of optionally selected channels
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"""
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logging.info("Fetching and storing messages in DB")
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all_channels = self.q(o.Channel).all()
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if self.selected_channels:
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channels = [c for c in all_channels
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if c.name in self.selected_channels]
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else:
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channels = all_channels
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for channel in channels:
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latest = self.q(o.Message).\
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filter(o.Message.channel == channel).\
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order_by(o.Message.ts.desc()).first()
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# NOTE(gryf): Trick out the API, which by default (latest and
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# oldest parameters set to 0) return certain amount of latest
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# messages, while we'd like to have it from the beginning of the
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# available history, if there is no database records available. In
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# that case value of 1 here will force the API to get messages
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# starting from first January 1970.
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latest = latest and latest.ts or 1
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while True:
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messages, latest = self._channels_history(channel, latest)
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for msg in messages:
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self._create_message(msg, channel)
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if latest is None:
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break
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self.session.commit()
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def generate_history(self):
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"""
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Return a history accumulated in DB into desired format. Special format
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"""
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def _create_message(self, data, channel):
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"""
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Create message with corresponding possible metadata, like reactions,
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files etc.
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"""
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logging.info("Fetching messages for channel %s", channel.name)
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message = o.Message(data)
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message.user = self.q(o.User).\
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filter(o.User.slackid == data['user']).one()
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message.channel = channel
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if data.get('is_starred'):
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message.is_starred = True
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if 'reactions' in data:
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for reaction_data in data['reactions']:
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message.reactions.append(o.Reaction(reaction_data))
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if data.get('subtype') == 'file_share':
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self._file_data(message, data['file'], data['file']['is_external'])
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elif data.get('subtype') == 'pinned_item':
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if data.get('attachments'):
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self._att_data(message, data['attachments'])
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elif data.get('item'):
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self._file_data(message, data['item'],
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data['item']['is_external'])
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elif data.get('attachments'):
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self._att_data(message, data['attachments'])
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self.session.add(message)
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def _file_data(self, message, data, is_external=True):
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"""
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Process file data. Could be either represented as 'file' object or
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'item' object in case of pinned items
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"""
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message.file = o.File(data)
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if data.get('is_starred'):
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message.is_starred = True
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if is_external:
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message.file.url = data['url_private']
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else:
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priv_url = data['url_private_download']
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message.file.filepath = self.downloader.download(priv_url, 'file')
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def _att_data(self, message, data):
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"""
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Process attachments
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"""
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for att in data:
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attachment = o.Attachment(att)
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message.attachments.append(attachment)
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def _get_create_obj(self, data, classobj, channel):
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"""
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Return object if exist in appropriate table (Topic or Purpose),
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compared to the data provided, create it otherwise.
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"""
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if not data['value']:
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return
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user = self.q(o.User).filter(o.User.slackid ==
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data['creator']).one_or_none()
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obj = self.q(classobj).\
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filter(classobj.last_set ==
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datetime.fromtimestamp(data['last_set'])).\
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filter(classobj.value == data['value']).\
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filter(classobj.creator == user).one_or_none()
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if not obj:
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# break channel relation
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for obj in self.q(classobj).filter(classobj.channel ==
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channel).all():
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obj.channel = None
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# create new object
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obj = classobj(data)
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obj.creator = user
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self.session.flush()
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return obj
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def _update_channel(self, channel, data):
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"""Update a channel with provided data"""
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logging.info("Update channel `%s' information in DB", channel.name)
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channel.update(data)
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channel.user = self.q(o.User).filter(o.User.slackid ==
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data['creator']).one_or_none()
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channel.purpose = self._get_create_obj(data['purpose'], o.Purpose,
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channel)
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channel.topic = self._get_create_obj(data['topic'], o.Topic, channel)
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self.session.flush()
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def _channels_list(self):
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"""
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Get channel list using Slack API. Return list of channel data or None
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in case of error.
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"""
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result = self.slack.api_call("channels.list")
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if not result.get("ok"):
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logging.error(result['error'])
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return None
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return result['channels']
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def _users_list(self):
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"""
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Get users list using Slack API. Return list of channel data or None
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in case of error.
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"""
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result = self.slack.api_call("users.list", presence=0)
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if not result.get("ok"):
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logging.error(result['error'])
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return None
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return result['members']
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def _channels_history(self, channel, latest):
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"""
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Get list of messages using Slack API. Return tuple containing:
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- list of messages data and returned timestramp if has_more is set
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to true,
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- list of messages data and None if has_more is set to false,
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- empty list and None if there is no messages
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"""
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result = self.slack.api_call("channels.history",
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channel=channel.slackid, count=1000,
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oldest=latest)
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if not result.get("ok"):
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logging.error(result['error'])
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return None, None
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if result['messages']:
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if result['has_more']:
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# TODO: this one might be not true, if API will return
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# messages not sorted by timestamp in descending order
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return result['messages'], result['messages'][0]['ts']
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else:
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return result['messages'], None
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return [], None
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