For importing huddles we have to have unique huddle hashes.
Huddle hashes are extracted from the list of users participating
in a huddle. So to extract these user ids, we first use huddle
id to getting the matching recipient, and then we use subscription
to get the user ids from the recipient id.
Added tests for the same (tests slightly tweaked by tabbott).
* If `zerver_realmauditlog` is present in the exported data,
`RealmAuditLog` would be imported normally.
* If it is not present, `create_subscription_events`
function in would create the `subscription_created`
events for RealmAuditLog. The reason this function
is in `import_realm` module and not in the individual
export tool scripts (like Slack) is because this
function would be common for all export tools.
This fixes#9846 for users who have not already done an import of
their organization from Slack.
Fixes#9846.
For the S3 backend uploads, 'attachment_path' should be
saved with the 's3_path' of the record, as the original
'path' is changed while exporting files from s3. (See
function 'export_files_from_s3' in export.py for reference.)
In 'zerver_reaction', the emoji_code should be updated
with the RealmEmoji allocated id when the 'reaction_type'
is 'realm_emoji'. Hence we add an extra field 'reaction_field'
in 're_map_foreign_keys', to process the above mentioned
condition.
Anders Kaseorg
Rhea Parekh
Tim Abbott
Aditya Bansal