import datetime from boto.s3.connection import S3Connection from django.apps import apps from django.conf import settings from django.db import connection from django.forms.models import model_to_dict from django.utils.timezone import make_aware as timezone_make_aware from django.utils.timezone import utc as timezone_utc from django.utils.timezone import is_naive as timezone_is_naive import glob import logging import os import ujson import subprocess import tempfile from zerver.lib.avatar_hash import user_avatar_path_from_ids from zerver.models import UserProfile, Realm, Client, Huddle, Stream, \ UserMessage, Subscription, Message, RealmEmoji, RealmFilter, Reaction, \ RealmDomain, Recipient, DefaultStream, get_user_profile_by_id, \ UserPresence, UserActivity, UserActivityInterval, CustomProfileField, \ CustomProfileFieldValue, get_display_recipient, Attachment, get_system_bot, \ RealmAuditLog, UserHotspot, MutedTopic, Service, UserGroup, \ UserGroupMembership, BotStorageData, BotConfigData from zerver.lib.parallel import run_parallel from typing import Any, Callable, Dict, List, Optional, Set, Tuple, \ Iterable, Union # Custom mypy types follow: Record = Dict[str, Any] TableName = str TableData = Dict[TableName, List[Record]] Field = str Path = str Context = Dict[str, Any] FilterArgs = Dict[str, Any] IdSource = Tuple[TableName, Field] SourceFilter = Callable[[Record], bool] # These next two types are callbacks, which mypy does not # support well, because PEP 484 says "using callbacks # with keyword arguments is not perceived as a common use case." # CustomFetch = Callable[[TableData, Config, Context], None] # PostProcessData = Callable[[TableData, Config, Context], None] CustomFetch = Any # TODO: make more specific, see above PostProcessData = Any # TODO: make more specific # The keys of our MessageOutput variables are normally # List[Record], but when we write partials, we can get # lists of integers or a single integer. # TODO: This could maybe be improved using TypedDict? MessageOutput = Dict[str, Union[List[Record], List[int], int]] MESSAGE_BATCH_CHUNK_SIZE = 1000 realm_tables = [("zerver_defaultstream", DefaultStream, "defaultstream"), ("zerver_realmemoji", RealmEmoji, "realmemoji"), ("zerver_realmdomain", RealmDomain, "realmdomain"), ("zerver_realmfilter", RealmFilter, "realmfilter")] # List[Tuple[TableName, Any, str]] ALL_ZULIP_TABLES = { 'analytics_anomaly', 'analytics_fillstate', 'analytics_installationcount', 'analytics_realmcount', 'analytics_streamcount', 'analytics_usercount', 'otp_static_staticdevice', 'otp_static_statictoken', 'otp_totp_totpdevice', 'social_auth_association', 'social_auth_code', 'social_auth_nonce', 'social_auth_partial', 'social_auth_usersocialauth', 'two_factor_phonedevice', 'zerver_archivedattachment', 'zerver_archivedattachment_messages', 'zerver_archivedmessage', 'zerver_archivedusermessage', 'zerver_attachment', 'zerver_attachment_messages', 'zerver_botconfigdata', 'zerver_botstoragedata', 'zerver_client', 'zerver_customprofilefield', 'zerver_customprofilefieldvalue', 'zerver_defaultstream', 'zerver_defaultstreamgroup', 'zerver_defaultstreamgroup_streams', 'zerver_emailchangestatus', 'zerver_huddle', 'zerver_message', 'zerver_multiuseinvite', 'zerver_multiuseinvite_streams', 'zerver_preregistrationuser', 'zerver_preregistrationuser_streams', 'zerver_pushdevicetoken', 'zerver_reaction', 'zerver_realm', 'zerver_realmauditlog', 'zerver_realmdomain', 'zerver_realmemoji', 'zerver_realmfilter', 'zerver_recipient', 'zerver_scheduledemail', 'zerver_scheduledmessage', 'zerver_service', 'zerver_stream', 'zerver_submessage', 'zerver_subscription', 'zerver_useractivity', 'zerver_useractivityinterval', 'zerver_usergroup', 'zerver_usergroupmembership', 'zerver_userhotspot', 'zerver_usermessage', 'zerver_userpresence', 'zerver_userprofile', 'zerver_userprofile_groups', 'zerver_userprofile_user_permissions', 'zerver_mutedtopic', } NON_EXPORTED_TABLES = { # These invitation/confirmation flow tables don't make sense to # export, since invitations links will be broken by the server URL # change anyway: 'zerver_emailchangestatus', 'zerver_multiuseinvite', 'zerver_multiuseinvite_streams', 'zerver_preregistrationuser', 'zerver_preregistrationuser_streams', # When switching servers, clients will need to re-login and # reregister for push notifications anyway. 'zerver_pushdevicetoken', # We don't use these generated Django tables 'zerver_userprofile_groups', 'zerver_userprofile_user_permissions', # These is used for scheduling future activity; it could make # sense to export, but is relatively low value. 'zerver_scheduledemail', 'zerver_scheduledmessage', # These tables are related to a user's 2FA authentication # configuration, which will need to be re-setup on the new server. 'two_factor_phonedevice', 'otp_static_staticdevice', 'otp_static_statictoken', 'otp_totp_totpdevice', # These archive tables should not be exported (they are to support # restoring content accidentally deleted due to software bugs in # the retention policy feature) 'zerver_archivedmessage', 'zerver_archivedusermessage', 'zerver_archivedattachment', 'zerver_archivedattachment_messages', # Social auth tables are not needed post-export, since we don't # use any of this state outside of a direct authentication flow. 'social_auth_association', 'social_auth_code', 'social_auth_nonce', 'social_auth_partial', 'social_auth_usersocialauth', # We will likely never want to migrate this table, since it's a # total of all the realmcount values on the server. Might need to # recompute it after a fillstate import. 'analytics_installationcount', # These analytics tables, however, should ideally be in the export. 'analytics_realmcount', 'analytics_streamcount', 'analytics_usercount', # Fillstate will require some cleverness to do the right partial export. 'analytics_fillstate', # This table isn't yet used for anything. 'analytics_anomaly', # These are for unfinished features; we'll want to add them ot the # export before they reach full production status. 'zerver_defaultstreamgroup', 'zerver_defaultstreamgroup_streams', 'zerver_submessage', # For any tables listed below here, it's a bug that they are not present in the export. } IMPLICIT_TABLES = { # ManyToMany relationships are exported implicitly. 'zerver_attachment_messages', } ATTACHMENT_TABLES = { 'zerver_attachment', } MESSAGE_TABLES = { # message tables get special treatment, because they're so big 'zerver_message', 'zerver_usermessage', # zerver_reaction belongs here, since it's added late 'zerver_reaction', } DATE_FIELDS = { 'zerver_attachment': ['create_time'], 'zerver_message': ['last_edit_time', 'pub_date'], 'zerver_realm': ['date_created'], 'zerver_stream': ['date_created'], 'zerver_useractivity': ['last_visit'], 'zerver_useractivityinterval': ['start', 'end'], 'zerver_userpresence': ['timestamp'], 'zerver_userprofile': ['date_joined', 'last_login', 'last_reminder'], 'zerver_realmauditlog': ['event_time'], 'zerver_userhotspot': ['timestamp'], } # type: Dict[TableName, List[Field]] def sanity_check_output(data: TableData) -> None: # First, we verify that the export tool has a declared # configuration for every table. target_models = ( list(apps.get_app_config('analytics').get_models(include_auto_created=True)) + list(apps.get_app_config('django_otp').get_models(include_auto_created=True)) + list(apps.get_app_config('otp_static').get_models(include_auto_created=True)) + list(apps.get_app_config('otp_totp').get_models(include_auto_created=True)) + list(apps.get_app_config('social_django').get_models(include_auto_created=True)) + list(apps.get_app_config('two_factor').get_models(include_auto_created=True)) + list(apps.get_app_config('zerver').get_models(include_auto_created=True)) ) all_tables_db = set(model._meta.db_table for model in target_models) # These assertion statements will fire when we add a new database # table that is not included in Zulip's data exports. Generally, # you can add your new table to `ALL_ZULIP_TABLES` and # `NON_EXPORTED_TABLES` during early work on a new feature so that # CI passes. # # We'll want to make sure we handle it for exports before # releasing the new feature, but doing so correctly requires some # expertise on this export system. assert ALL_ZULIP_TABLES == all_tables_db assert NON_EXPORTED_TABLES.issubset(ALL_ZULIP_TABLES) assert IMPLICIT_TABLES.issubset(ALL_ZULIP_TABLES) assert ATTACHMENT_TABLES.issubset(ALL_ZULIP_TABLES) tables = set(ALL_ZULIP_TABLES) tables -= NON_EXPORTED_TABLES tables -= IMPLICIT_TABLES tables -= MESSAGE_TABLES tables -= ATTACHMENT_TABLES for table in tables: if table not in data: logging.warning('??? NO DATA EXPORTED FOR TABLE %s!!!' % (table,)) def write_data_to_file(output_file: Path, data: Any) -> None: with open(output_file, "w") as f: f.write(ujson.dumps(data, indent=4)) def make_raw(query: Any, exclude: Optional[List[Field]]=None) -> List[Record]: ''' Takes a Django query and returns a JSONable list of dictionaries corresponding to the database rows. ''' rows = [] for instance in query: data = model_to_dict(instance, exclude=exclude) """ In Django 1.11.5, model_to_dict evaluates the QuerySet of many-to-many field to give us a list of instances. We require a list of primary keys, so we get the primary keys from the instances below. """ for field in instance._meta.many_to_many: value = data[field.name] data[field.name] = [row.id for row in value] rows.append(data) return rows def floatify_datetime_fields(data: TableData, table: TableName) -> None: for item in data[table]: for field in DATE_FIELDS[table]: orig_dt = item[field] if orig_dt is None: continue if timezone_is_naive(orig_dt): logging.warning("Naive datetime:", item) dt = timezone_make_aware(orig_dt) else: dt = orig_dt utc_naive = dt.replace(tzinfo=None) - dt.utcoffset() item[field] = (utc_naive - datetime.datetime(1970, 1, 1)).total_seconds() class Config: ''' A Config object configures a single table for exporting (and, maybe some day importing as well. You should never mutate Config objects as part of the export; instead use the data to determine how you populate other data structures. There are parent/children relationships between Config objects. The parent should be instantiated first. The child will append itself to the parent's list of children. ''' def __init__(self, table: Optional[str]=None, model: Optional[Any]=None, normal_parent: Optional['Config']=None, virtual_parent: Optional['Config']=None, filter_args: Optional[FilterArgs]=None, custom_fetch: Optional[CustomFetch]=None, custom_tables: Optional[List[TableName]]=None, post_process_data: Optional[PostProcessData]=None, concat_and_destroy: Optional[List[TableName]]=None, id_source: Optional[IdSource]=None, source_filter: Optional[SourceFilter]=None, parent_key: Optional[Field]=None, use_all: bool=False, is_seeded: bool=False, exclude: Optional[List[Field]]=None) -> None: assert table or custom_tables self.table = table self.model = model self.normal_parent = normal_parent self.virtual_parent = virtual_parent self.filter_args = filter_args self.parent_key = parent_key self.use_all = use_all self.is_seeded = is_seeded self.exclude = exclude self.custom_fetch = custom_fetch self.custom_tables = custom_tables self.post_process_data = post_process_data self.concat_and_destroy = concat_and_destroy self.id_source = id_source self.source_filter = source_filter self.children = [] # type: List[Config] if normal_parent is not None: self.parent = normal_parent # type: Optional[Config] else: self.parent = None if virtual_parent is not None and normal_parent is not None: raise AssertionError(''' If you specify a normal_parent, please do not create a virtual_parent. ''') if normal_parent is not None: normal_parent.children.append(self) elif virtual_parent is not None: virtual_parent.children.append(self) elif is_seeded is None: raise AssertionError(''' You must specify a parent if you are not using is_seeded. ''') if self.id_source is not None: if self.virtual_parent is None: raise AssertionError(''' You must specify a virtual_parent if you are using id_source.''') if self.id_source[0] != self.virtual_parent.table: raise AssertionError(''' Configuration error. To populate %s, you want data from %s, but that differs from the table name of your virtual parent (%s), which suggests you many not have set up the ordering correctly. You may simply need to assign a virtual_parent, or there may be deeper issues going on.''' % ( self.table, self.id_source[0], self.virtual_parent.table)) def export_from_config(response: TableData, config: Config, seed_object: Optional[Any]=None, context: Optional[Context]=None) -> None: table = config.table parent = config.parent model = config.model if context is None: context = {} if table: exported_tables = [table] else: if config.custom_tables is None: raise AssertionError(''' You must specify config.custom_tables if you are not specifying config.table''') exported_tables = config.custom_tables for t in exported_tables: logging.info('Exporting via export_from_config: %s' % (t,)) rows = None if config.is_seeded: rows = [seed_object] elif config.custom_fetch: config.custom_fetch( response=response, config=config, context=context ) if config.custom_tables: for t in config.custom_tables: if t not in response: raise AssertionError('Custom fetch failed to populate %s' % (t,)) elif config.concat_and_destroy: # When we concat_and_destroy, we are working with # temporary "tables" that are lists of records that # should already be ready to export. data = [] # type: List[Record] for t in config.concat_and_destroy: data += response[t] del response[t] logging.info('Deleted temporary %s' % (t,)) assert table is not None response[table] = data elif config.use_all: assert model is not None query = model.objects.all() rows = list(query) elif config.normal_parent: # In this mode, our current model is figuratively Article, # and normal_parent is figuratively Blog, and # now we just need to get all the articles # contained by the blogs. model = config.model assert parent is not None assert parent.table is not None assert config.parent_key is not None parent_ids = [r['id'] for r in response[parent.table]] filter_parms = {config.parent_key: parent_ids} # type: Dict[str, Any] if config.filter_args is not None: filter_parms.update(config.filter_args) assert model is not None query = model.objects.filter(**filter_parms) rows = list(query) elif config.id_source: # In this mode, we are the figurative Blog, and we now # need to look at the current response to get all the # blog ids from the Article rows we fetched previously. model = config.model assert model is not None # This will be a tuple of the form ('zerver_article', 'blog'). (child_table, field) = config.id_source child_rows = response[child_table] if config.source_filter: child_rows = [r for r in child_rows if config.source_filter(r)] lookup_ids = [r[field] for r in child_rows] filter_parms = dict(id__in=lookup_ids) if config.filter_args: filter_parms.update(config.filter_args) query = model.objects.filter(**filter_parms) rows = list(query) # Post-process rows (which won't apply to custom fetches/concats) if rows is not None: assert table is not None # Hint for mypy response[table] = make_raw(rows, exclude=config.exclude) if table in DATE_FIELDS: floatify_datetime_fields(response, table) if config.post_process_data: config.post_process_data( response=response, config=config, context=context ) # Now walk our children. It's extremely important to respect # the order of children here. for child_config in config.children: export_from_config( response=response, config=child_config, context=context, ) def get_realm_config() -> Config: # This is common, public information about the realm that we can share # with all realm users. realm_config = Config( table='zerver_realm', is_seeded=True ) Config( table='zerver_defaultstream', model=DefaultStream, normal_parent=realm_config, parent_key='realm_id__in', ) Config( table='zerver_customprofilefield', model=CustomProfileField, normal_parent=realm_config, parent_key='realm_id__in', ) Config( table='zerver_realmemoji', model=RealmEmoji, normal_parent=realm_config, parent_key='realm_id__in', ) Config( table='zerver_realmdomain', model=RealmDomain, normal_parent=realm_config, parent_key='realm_id__in', ) Config( table='zerver_realmfilter', model=RealmFilter, normal_parent=realm_config, parent_key='realm_id__in', ) Config( table='zerver_client', model=Client, virtual_parent=realm_config, use_all=True ) user_profile_config = Config( custom_tables=[ 'zerver_userprofile', 'zerver_userprofile_mirrordummy', ], # set table for children who treat us as normal parent table='zerver_userprofile', virtual_parent=realm_config, custom_fetch=fetch_user_profile, ) user_groups_config = Config( table='zerver_usergroup', model=UserGroup, normal_parent=realm_config, parent_key='realm__in', ) Config( table='zerver_usergroupmembership', model=UserGroupMembership, normal_parent=user_groups_config, parent_key='user_group__in', ) Config( custom_tables=[ 'zerver_userprofile_crossrealm', ], virtual_parent=user_profile_config, custom_fetch=fetch_user_profile_cross_realm, ) Config( table='zerver_userpresence', model=UserPresence, normal_parent=user_profile_config, parent_key='user_profile__in', ) Config( table='zerver_customprofilefieldvalue', model=CustomProfileFieldValue, normal_parent=user_profile_config, parent_key='user_profile__in', ) Config( table='zerver_useractivity', model=UserActivity, normal_parent=user_profile_config, parent_key='user_profile__in', ) Config( table='zerver_useractivityinterval', model=UserActivityInterval, normal_parent=user_profile_config, parent_key='user_profile__in', ) Config( table='zerver_realmauditlog', model=RealmAuditLog, normal_parent=user_profile_config, parent_key='modified_user__in', ) Config( table='zerver_userhotspot', model=UserHotspot, normal_parent=user_profile_config, parent_key='user__in', ) Config( table='zerver_mutedtopic', model=MutedTopic, normal_parent=user_profile_config, parent_key='user_profile__in', ) Config( table='zerver_service', model=Service, normal_parent=user_profile_config, parent_key='user_profile__in', ) Config( table='zerver_botstoragedata', model=BotStorageData, normal_parent=user_profile_config, parent_key='bot_profile__in', ) Config( table='zerver_botconfigdata', model=BotConfigData, normal_parent=user_profile_config, parent_key='bot_profile__in', ) # Some of these tables are intermediate "tables" that we # create only for the export. Think of them as similar to views. user_subscription_config = Config( table='_user_subscription', model=Subscription, normal_parent=user_profile_config, filter_args={'recipient__type': Recipient.PERSONAL}, parent_key='user_profile__in', ) Config( table='_user_recipient', model=Recipient, virtual_parent=user_subscription_config, id_source=('_user_subscription', 'recipient'), ) # stream_subscription_config = Config( table='_stream_subscription', model=Subscription, normal_parent=user_profile_config, filter_args={'recipient__type': Recipient.STREAM}, parent_key='user_profile__in', ) stream_recipient_config = Config( table='_stream_recipient', model=Recipient, virtual_parent=stream_subscription_config, id_source=('_stream_subscription', 'recipient'), ) Config( table='zerver_stream', model=Stream, virtual_parent=stream_recipient_config, id_source=('_stream_recipient', 'type_id'), source_filter=lambda r: r['type'] == Recipient.STREAM, exclude=['email_token'], post_process_data=sanity_check_stream_data ) # Config( custom_tables=[ '_huddle_recipient', '_huddle_subscription', 'zerver_huddle', ], normal_parent=user_profile_config, custom_fetch=fetch_huddle_objects, ) # Now build permanent tables from our temp tables. Config( table='zerver_recipient', virtual_parent=user_profile_config, concat_and_destroy=[ '_user_recipient', '_stream_recipient', '_huddle_recipient', ], ) Config( table='zerver_subscription', virtual_parent=user_profile_config, concat_and_destroy=[ '_user_subscription', '_stream_subscription', '_huddle_subscription', ] ) return realm_config def sanity_check_stream_data(response: TableData, config: Config, context: Context) -> None: if context['exportable_user_ids'] is not None: # If we restrict which user ids are exportable, # the way that we find # streams is a little too # complex to have a sanity check. return actual_streams = set([stream.name for stream in Stream.objects.filter( realm=response["zerver_realm"][0]['id'])]) streams_in_response = set([stream['name'] for stream in response['zerver_stream']]) if len(streams_in_response - actual_streams) > 0: print("Error: Streams not present in the realm were exported:") print(" ", streams_in_response - actual_streams) print("This is likely due to a bug in the export tool.") raise AssertionError("Aborting! Please investigate.") if len(actual_streams - streams_in_response) > 0: print("Error: Some streams present in the realm were not exported:") print(" ", actual_streams - streams_in_response) print("Usually, this is caused by a stream having been created that never had subscribers.") print("(Due to a bug elsewhere in Zulip, not in the export tool)") raise AssertionError("Aborting! Please investigate.") def fetch_user_profile(response: TableData, config: Config, context: Context) -> None: realm = context['realm'] exportable_user_ids = context['exportable_user_ids'] query = UserProfile.objects.filter(realm_id=realm.id) exclude = ['password', 'api_key'] rows = make_raw(list(query), exclude=exclude) normal_rows = [] # type: List[Record] dummy_rows = [] # type: List[Record] for row in rows: if exportable_user_ids is not None: if row['id'] in exportable_user_ids: assert not row['is_mirror_dummy'] else: # Convert non-exportable users to # inactive is_mirror_dummy users. row['is_mirror_dummy'] = True row['is_active'] = False if row['is_mirror_dummy']: dummy_rows.append(row) else: normal_rows.append(row) response['zerver_userprofile'] = normal_rows response['zerver_userprofile_mirrordummy'] = dummy_rows def fetch_user_profile_cross_realm(response: TableData, config: Config, context: Context) -> None: realm = context['realm'] response['zerver_userprofile_crossrealm'] = [] if realm.string_id == settings.SYSTEM_BOT_REALM: return for bot_user in [ get_system_bot(settings.NOTIFICATION_BOT), get_system_bot(settings.EMAIL_GATEWAY_BOT), get_system_bot(settings.WELCOME_BOT), ]: recipient_id = Recipient.objects.get(type_id=bot_user.id, type=Recipient.PERSONAL).id response['zerver_userprofile_crossrealm'].append(dict( email=bot_user.email, id=bot_user.id, recipient_id=recipient_id, )) def fetch_attachment_data(response: TableData, realm_id: int, message_ids: Set[int]) -> None: filter_args = {'realm_id': realm_id} query = Attachment.objects.filter(**filter_args) response['zerver_attachment'] = make_raw(list(query)) floatify_datetime_fields(response, 'zerver_attachment') ''' We usually export most messages for the realm, but not quite ALL messages for the realm. So, we need to clean up our attachment data to have correct values for response['zerver_attachment'][]['messages']. ''' for row in response['zerver_attachment']: filterer_message_ids = set(row['messages']).intersection(message_ids) row['messages'] = sorted(list(filterer_message_ids)) ''' Attachments can be connected to multiple messages, although it's most common to have just one message. Regardless, if none of those message(s) survived the filtering above for a particular attachment, then we won't export the attachment row. ''' response['zerver_attachment'] = [ row for row in response['zerver_attachment'] if row['messages']] def fetch_reaction_data(response: TableData, message_ids: Set[int]) -> None: query = Reaction.objects.filter(message_id__in=list(message_ids)) response['zerver_reaction'] = make_raw(list(query)) def fetch_huddle_objects(response: TableData, config: Config, context: Context) -> None: realm = context['realm'] assert config.parent is not None assert config.parent.table is not None user_profile_ids = set(r['id'] for r in response[config.parent.table]) # First we get all huddles involving someone in the realm. realm_huddle_subs = Subscription.objects.select_related("recipient").filter( recipient__type=Recipient.HUDDLE, user_profile__in=user_profile_ids) realm_huddle_recipient_ids = set(sub.recipient_id for sub in realm_huddle_subs) # Mark all Huddles whose recipient ID contains a cross-realm user. unsafe_huddle_recipient_ids = set() for sub in Subscription.objects.select_related().filter(recipient__in=realm_huddle_recipient_ids): if sub.user_profile.realm != realm: # In almost every case the other realm will be zulip.com unsafe_huddle_recipient_ids.add(sub.recipient_id) # Now filter down to just those huddles that are entirely within the realm. # # This is important for ensuring that the User objects needed # to import it on the other end exist (since we're only # exporting the users from this realm), at the cost of losing # some of these cross-realm messages. huddle_subs = [sub for sub in realm_huddle_subs if sub.recipient_id not in unsafe_huddle_recipient_ids] huddle_recipient_ids = set(sub.recipient_id for sub in huddle_subs) huddle_ids = set(sub.recipient.type_id for sub in huddle_subs) huddle_subscription_dicts = make_raw(huddle_subs) huddle_recipients = make_raw(Recipient.objects.filter(id__in=huddle_recipient_ids)) response['_huddle_recipient'] = huddle_recipients response['_huddle_subscription'] = huddle_subscription_dicts response['zerver_huddle'] = make_raw(Huddle.objects.filter(id__in=huddle_ids)) def fetch_usermessages(realm: Realm, message_ids: Set[int], user_profile_ids: Set[int], message_filename: Path) -> List[Record]: # UserMessage export security rule: You can export UserMessages # for the messages you exported for the users in your realm. user_message_query = UserMessage.objects.filter(user_profile__realm=realm, message_id__in=message_ids) user_message_chunk = [] for user_message in user_message_query: if user_message.user_profile_id not in user_profile_ids: continue user_message_obj = model_to_dict(user_message) user_message_obj['flags_mask'] = user_message.flags.mask del user_message_obj['flags'] user_message_chunk.append(user_message_obj) logging.info("Fetched UserMessages for %s" % (message_filename,)) return user_message_chunk def export_usermessages_batch(input_path: Path, output_path: Path) -> None: """As part of the system for doing parallel exports, this runs on one batch of Message objects and adds the corresponding UserMessage objects. (This is called by the export_usermessage_batch management command).""" with open(input_path, "r") as input_file: output = ujson.loads(input_file.read()) message_ids = [item['id'] for item in output['zerver_message']] user_profile_ids = set(output['zerver_userprofile_ids']) del output['zerver_userprofile_ids'] realm = Realm.objects.get(id=output['realm_id']) del output['realm_id'] output['zerver_usermessage'] = fetch_usermessages(realm, set(message_ids), user_profile_ids, output_path) write_message_export(output_path, output) os.unlink(input_path) def write_message_export(message_filename: Path, output: MessageOutput) -> None: write_data_to_file(output_file=message_filename, data=output) logging.info("Dumped to %s" % (message_filename,)) def export_partial_message_files(realm: Realm, response: TableData, chunk_size: int=MESSAGE_BATCH_CHUNK_SIZE, output_dir: Optional[Path]=None) -> Set[int]: if output_dir is None: output_dir = tempfile.mkdtemp(prefix="zulip-export") def get_ids(records: List[Record]) -> Set[int]: return set(x['id'] for x in records) # Basic security rule: You can export everything either... # - sent by someone in your exportable_user_ids # OR # - received by someone in your exportable_user_ids (which # equates to a recipient object we are exporting) # # TODO: In theory, you should be able to export messages in # cross-realm PM threads; currently, this only exports cross-realm # messages received by your realm that were sent by Zulip system # bots (e.g. emailgateway, notification-bot). # Here, "we" and "us" refers to the inner circle of users who # were specified as being allowed to be exported. "Them" # refers to other users. user_ids_for_us = get_ids( response['zerver_userprofile'] ) recipient_ids_for_us = get_ids(response['zerver_recipient']) ids_of_our_possible_senders = get_ids( response['zerver_userprofile'] + response['zerver_userprofile_mirrordummy'] + response['zerver_userprofile_crossrealm']) ids_of_non_exported_possible_recipients = ids_of_our_possible_senders - user_ids_for_us recipients_for_them = Recipient.objects.filter( type=Recipient.PERSONAL, type_id__in=ids_of_non_exported_possible_recipients).values("id") recipient_ids_for_them = get_ids(recipients_for_them) # We capture most messages here, since the # recipients we subscribe to are also the # recipients of most messages we send. messages_we_received = Message.objects.filter( sender__in=ids_of_our_possible_senders, recipient__in=recipient_ids_for_us, ).order_by('id') # This should pick up stragglers; messages we sent # where we the recipient wasn't subscribed to by any of # us (such as PMs to "them"). messages_we_sent_to_them = Message.objects.filter( sender__in=user_ids_for_us, recipient__in=recipient_ids_for_them, ).order_by('id') message_queries = [ messages_we_received, messages_we_sent_to_them ] all_message_ids = set() # type: Set[int] dump_file_id = 1 for message_query in message_queries: dump_file_id = write_message_partial_for_query( realm=realm, message_query=message_query, dump_file_id=dump_file_id, all_message_ids=all_message_ids, output_dir=output_dir, user_profile_ids=user_ids_for_us, chunk_size=chunk_size, ) return all_message_ids def write_message_partial_for_query(realm: Realm, message_query: Any, dump_file_id: int, all_message_ids: Set[int], output_dir: Path, user_profile_ids: Set[int], chunk_size: int=MESSAGE_BATCH_CHUNK_SIZE) -> int: min_id = -1 while True: actual_query = message_query.filter(id__gt=min_id)[0:chunk_size] message_chunk = make_raw(actual_query) message_ids = set(m['id'] for m in message_chunk) assert len(message_ids.intersection(all_message_ids)) == 0 all_message_ids.update(message_ids) if len(message_chunk) == 0: break # Figure out the name of our shard file. message_filename = os.path.join(output_dir, "messages-%06d.json" % (dump_file_id,)) message_filename += '.partial' logging.info("Fetched Messages for %s" % (message_filename,)) # Clean up our messages. table_data = {} # type: TableData table_data['zerver_message'] = message_chunk floatify_datetime_fields(table_data, 'zerver_message') # Build up our output for the .partial file, which needs # a list of user_profile_ids to search for (as well as # the realm id). output = {} # type: MessageOutput output['zerver_message'] = table_data['zerver_message'] output['zerver_userprofile_ids'] = list(user_profile_ids) output['realm_id'] = realm.id # And write the data. write_message_export(message_filename, output) min_id = max(message_ids) dump_file_id += 1 return dump_file_id def export_uploads_and_avatars(realm: Realm, output_dir: Path) -> None: uploads_output_dir = os.path.join(output_dir, 'uploads') avatars_output_dir = os.path.join(output_dir, 'avatars') emoji_output_dir = os.path.join(output_dir, 'emoji') for output_dir in (uploads_output_dir, avatars_output_dir, emoji_output_dir): if not os.path.exists(output_dir): os.makedirs(output_dir) if settings.LOCAL_UPLOADS_DIR: # Small installations and developers will usually just store files locally. export_uploads_from_local(realm, local_dir=os.path.join(settings.LOCAL_UPLOADS_DIR, "files"), output_dir=uploads_output_dir) export_avatars_from_local(realm, local_dir=os.path.join(settings.LOCAL_UPLOADS_DIR, "avatars"), output_dir=avatars_output_dir) export_emoji_from_local(realm, local_dir=os.path.join(settings.LOCAL_UPLOADS_DIR, "avatars"), output_dir=emoji_output_dir) else: # Some bigger installations will have their data stored on S3. export_files_from_s3(realm, settings.S3_AVATAR_BUCKET, output_dir=avatars_output_dir, processing_avatars=True) export_files_from_s3(realm, settings.S3_AUTH_UPLOADS_BUCKET, output_dir=uploads_output_dir) export_files_from_s3(realm, settings.S3_AVATAR_BUCKET, output_dir=emoji_output_dir, processing_emoji=True) def export_files_from_s3(realm: Realm, bucket_name: str, output_dir: Path, processing_avatars: bool=False, processing_emoji: bool=False) -> None: conn = S3Connection(settings.S3_KEY, settings.S3_SECRET_KEY) bucket = conn.get_bucket(bucket_name, validate=True) records = [] logging.info("Downloading uploaded files from %s" % (bucket_name)) avatar_hash_values = set() user_ids = set() if processing_avatars: bucket_list = bucket.list() for user_profile in UserProfile.objects.filter(realm=realm): avatar_path = user_avatar_path_from_ids(user_profile.id, realm.id) avatar_hash_values.add(avatar_path) avatar_hash_values.add(avatar_path + ".original") user_ids.add(user_profile.id) if processing_emoji: bucket_list = bucket.list(prefix="%s/emoji/images/" % (realm.id,)) else: bucket_list = bucket.list(prefix="%s/" % (realm.id,)) if settings.EMAIL_GATEWAY_BOT is not None: email_gateway_bot = get_system_bot(settings.EMAIL_GATEWAY_BOT) # type: Optional[UserProfile] else: email_gateway_bot = None count = 0 for bkey in bucket_list: if processing_avatars and bkey.name not in avatar_hash_values: continue key = bucket.get_key(bkey.name) # This can happen if an email address has moved realms if 'realm_id' in key.metadata and key.metadata['realm_id'] != str(realm.id): if email_gateway_bot is None or key.metadata['user_profile_id'] != str(email_gateway_bot.id): raise AssertionError("Key metadata problem: %s %s / %s" % (key.name, key.metadata, realm.id)) # Email gateway bot sends messages, potentially including attachments, cross-realm. print("File uploaded by email gateway bot: %s / %s" % (key.name, key.metadata)) elif processing_avatars: if 'user_profile_id' not in key.metadata: raise AssertionError("Missing user_profile_id in key metadata: %s" % (key.metadata,)) if int(key.metadata['user_profile_id']) not in user_ids: raise AssertionError("Wrong user_profile_id in key metadata: %s" % (key.metadata,)) elif 'realm_id' not in key.metadata: raise AssertionError("Missing realm_id in key metadata: %s" % (key.metadata,)) record = dict(s3_path=key.name, bucket=bucket_name, size=key.size, last_modified=key.last_modified, content_type=key.content_type, md5=key.md5) record.update(key.metadata) if processing_emoji: record['file_name'] = os.path.basename(key.name) # A few early avatars don't have 'realm_id' on the object; fix their metadata user_profile = get_user_profile_by_id(record['user_profile_id']) if 'realm_id' not in record: record['realm_id'] = user_profile.realm_id record['user_profile_email'] = user_profile.email # Fix the record ids record['user_profile_id'] = int(record['user_profile_id']) record['realm_id'] = int(record['realm_id']) record['path'] = key.name if processing_avatars or processing_emoji: filename = os.path.join(output_dir, key.name) else: fields = key.name.split('/') if len(fields) != 3: raise AssertionError("Suspicious key with invalid format %s" % (key.name)) filename = os.path.join(output_dir, key.name) dirname = os.path.dirname(filename) if not os.path.exists(dirname): os.makedirs(dirname) key.get_contents_to_filename(filename) records.append(record) count += 1 if (count % 100 == 0): logging.info("Finished %s" % (count,)) with open(os.path.join(output_dir, "records.json"), "w") as records_file: ujson.dump(records, records_file, indent=4) def export_uploads_from_local(realm: Realm, local_dir: Path, output_dir: Path) -> None: count = 0 records = [] for attachment in Attachment.objects.filter(realm_id=realm.id): local_path = os.path.join(local_dir, attachment.path_id) output_path = os.path.join(output_dir, attachment.path_id) os.makedirs(os.path.dirname(output_path), exist_ok=True) subprocess.check_call(["cp", "-a", local_path, output_path]) stat = os.stat(local_path) record = dict(realm_id=attachment.realm_id, user_profile_id=attachment.owner.id, user_profile_email=attachment.owner.email, s3_path=attachment.path_id, path=attachment.path_id, size=stat.st_size, last_modified=stat.st_mtime, content_type=None) records.append(record) count += 1 if (count % 100 == 0): logging.info("Finished %s" % (count,)) with open(os.path.join(output_dir, "records.json"), "w") as records_file: ujson.dump(records, records_file, indent=4) def export_avatars_from_local(realm: Realm, local_dir: Path, output_dir: Path) -> None: count = 0 records = [] users = list(UserProfile.objects.filter(realm=realm)) users += [ get_system_bot(settings.NOTIFICATION_BOT), get_system_bot(settings.EMAIL_GATEWAY_BOT), get_system_bot(settings.WELCOME_BOT), ] for user in users: if user.avatar_source == UserProfile.AVATAR_FROM_GRAVATAR: continue avatar_path = user_avatar_path_from_ids(user.id, realm.id) wildcard = os.path.join(local_dir, avatar_path + '.*') for local_path in glob.glob(wildcard): logging.info('Copying avatar file for user %s from %s' % ( user.email, local_path)) fn = os.path.relpath(local_path, local_dir) output_path = os.path.join(output_dir, fn) os.makedirs(str(os.path.dirname(output_path)), exist_ok=True) subprocess.check_call(["cp", "-a", str(local_path), str(output_path)]) stat = os.stat(local_path) record = dict(realm_id=realm.id, user_profile_id=user.id, user_profile_email=user.email, s3_path=fn, path=fn, size=stat.st_size, last_modified=stat.st_mtime, content_type=None) records.append(record) count += 1 if (count % 100 == 0): logging.info("Finished %s" % (count,)) with open(os.path.join(output_dir, "records.json"), "w") as records_file: ujson.dump(records, records_file, indent=4) def export_emoji_from_local(realm: Realm, local_dir: Path, output_dir: Path) -> None: count = 0 records = [] for realm_emoji in RealmEmoji.objects.filter(realm_id=realm.id): emoji_path = RealmEmoji.PATH_ID_TEMPLATE.format( realm_id=realm.id, emoji_file_name=realm_emoji.file_name ) local_path = os.path.join(local_dir, emoji_path) output_path = os.path.join(output_dir, emoji_path) os.makedirs(os.path.dirname(output_path), exist_ok=True) subprocess.check_call(["cp", "-a", local_path, output_path]) record = dict(realm_id=realm.id, author=realm_emoji.author.id, path=emoji_path, s3_path=emoji_path, file_name=realm_emoji.file_name, name=realm_emoji.name, deactivated=realm_emoji.deactivated) records.append(record) count += 1 if (count % 100 == 0): logging.info("Finished %s" % (count,)) with open(os.path.join(output_dir, "records.json"), "w") as records_file: ujson.dump(records, records_file, indent=4) def do_write_stats_file_for_realm_export(output_dir: Path) -> None: stats_file = os.path.join(output_dir, 'stats.txt') realm_file = os.path.join(output_dir, 'realm.json') attachment_file = os.path.join(output_dir, 'attachment.json') message_files = glob.glob(os.path.join(output_dir, 'messages-*.json')) fns = sorted([attachment_file] + message_files + [realm_file]) logging.info('Writing stats file: %s\n' % (stats_file,)) with open(stats_file, 'w') as f: for fn in fns: f.write(os.path.basename(fn) + '\n') payload = open(fn).read() data = ujson.loads(payload) for k in sorted(data): f.write('%5d %s\n' % (len(data[k]), k)) f.write('\n') avatar_file = os.path.join(output_dir, 'avatars/records.json') uploads_file = os.path.join(output_dir, 'uploads/records.json') for fn in [avatar_file, uploads_file]: f.write(fn+'\n') payload = open(fn).read() data = ujson.loads(payload) f.write('%5d records\n' % len(data)) f.write('\n') def do_export_realm(realm: Realm, output_dir: Path, threads: int, exportable_user_ids: Optional[Set[int]]=None) -> None: response = {} # type: TableData # We need at least one thread running to export # UserMessage rows. The management command should # enforce this for us. if not settings.TEST_SUITE: assert threads >= 1 assert os.path.exists("./manage.py") realm_config = get_realm_config() create_soft_link(source=output_dir, in_progress=True) logging.info("Exporting data from get_realm_config()...") export_from_config( response=response, config=realm_config, seed_object=realm, context=dict(realm=realm, exportable_user_ids=exportable_user_ids) ) logging.info('...DONE with get_realm_config() data') sanity_check_output(response) logging.info("Exporting uploaded files and avatars") export_uploads_and_avatars(realm, output_dir) # We (sort of) export zerver_message rows here. We write # them to .partial files that are subsequently fleshed out # by parallel processes to add in zerver_usermessage data. # This is for performance reasons, of course. Some installations # have millions of messages. logging.info("Exporting .partial files messages") message_ids = export_partial_message_files(realm, response, output_dir=output_dir) logging.info('%d messages were exported' % (len(message_ids))) # zerver_reaction zerver_reaction = {} # type: TableData fetch_reaction_data(response=zerver_reaction, message_ids=message_ids) response.update(zerver_reaction) # Write realm data export_file = os.path.join(output_dir, "realm.json") write_data_to_file(output_file=export_file, data=response) logging.info('Writing realm data to %s' % (export_file,)) # zerver_attachment export_attachment_table(realm=realm, output_dir=output_dir, message_ids=message_ids) # Start parallel jobs to export the UserMessage objects. launch_user_message_subprocesses(threads=threads, output_dir=output_dir) logging.info("Finished exporting %s" % (realm.string_id)) create_soft_link(source=output_dir, in_progress=False) def export_attachment_table(realm: Realm, output_dir: Path, message_ids: Set[int]) -> None: response = {} # type: TableData fetch_attachment_data(response=response, realm_id=realm.id, message_ids=message_ids) output_file = os.path.join(output_dir, "attachment.json") logging.info('Writing attachment table data to %s' % (output_file,)) write_data_to_file(output_file=output_file, data=response) def create_soft_link(source: Path, in_progress: bool=True) -> None: is_done = not in_progress in_progress_link = '/tmp/zulip-export-in-progress' done_link = '/tmp/zulip-export-most-recent' if in_progress: new_target = in_progress_link else: subprocess.check_call(['rm', '-f', in_progress_link]) new_target = done_link subprocess.check_call(["ln", "-nsf", source, new_target]) if is_done: logging.info('See %s for output files' % (new_target,)) def launch_user_message_subprocesses(threads: int, output_dir: Path) -> None: logging.info('Launching %d PARALLEL subprocesses to export UserMessage rows' % (threads,)) def run_job(shard: str) -> int: subprocess.call(["./manage.py", 'export_usermessage_batch', '--path', str(output_dir), '--thread', shard]) return 0 for (status, job) in run_parallel(run_job, [str(x) for x in range(0, threads)], threads=threads): print("Shard %s finished, status %s" % (job, status)) def do_export_user(user_profile: UserProfile, output_dir: Path) -> None: response = {} # type: TableData export_single_user(user_profile, response) export_file = os.path.join(output_dir, "user.json") write_data_to_file(output_file=export_file, data=response) logging.info("Exporting messages") export_messages_single_user(user_profile, output_dir) def export_single_user(user_profile: UserProfile, response: TableData) -> None: config = get_single_user_config() export_from_config( response=response, config=config, seed_object=user_profile, ) def get_single_user_config() -> Config: # zerver_userprofile user_profile_config = Config( table='zerver_userprofile', is_seeded=True, exclude=['password', 'api_key'], ) # zerver_subscription subscription_config = Config( table='zerver_subscription', model=Subscription, normal_parent=user_profile_config, parent_key='user_profile__in', ) # zerver_recipient recipient_config = Config( table='zerver_recipient', model=Recipient, virtual_parent=subscription_config, id_source=('zerver_subscription', 'recipient'), ) # zerver_stream Config( table='zerver_stream', model=Stream, virtual_parent=recipient_config, id_source=('zerver_recipient', 'type_id'), source_filter=lambda r: r['type'] == Recipient.STREAM, exclude=['email_token'], ) return user_profile_config def export_messages_single_user(user_profile: UserProfile, output_dir: Path, chunk_size: int=MESSAGE_BATCH_CHUNK_SIZE) -> None: user_message_query = UserMessage.objects.filter(user_profile=user_profile).order_by("id") min_id = -1 dump_file_id = 1 while True: actual_query = user_message_query.select_related( "message", "message__sending_client").filter(id__gt=min_id)[0:chunk_size] user_message_chunk = [um for um in actual_query] user_message_ids = set(um.id for um in user_message_chunk) if len(user_message_chunk) == 0: break message_chunk = [] for user_message in user_message_chunk: item = model_to_dict(user_message.message) item['flags'] = user_message.flags_list() item['flags_mask'] = user_message.flags.mask # Add a few nice, human-readable details item['sending_client_name'] = user_message.message.sending_client.name item['display_recipient'] = get_display_recipient(user_message.message.recipient) message_chunk.append(item) message_filename = os.path.join(output_dir, "messages-%06d.json" % (dump_file_id,)) logging.info("Fetched Messages for %s" % (message_filename,)) output = {'zerver_message': message_chunk} floatify_datetime_fields(output, 'zerver_message') message_output = dict(output) # type: MessageOutput write_message_export(message_filename, message_output) min_id = max(user_message_ids) dump_file_id += 1