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spec/scansion/muc_members_only_change.scs @ 13186:affaf6d08d26
util.datamanager: Pad list writes to avoid crossing block boundaries
By padding items so that they do not cross block boundaries, it becomes
eaiser to delete whole blocks with fallocate() without cutting items
in half, improving efficiency of such operations.
Since list stores are used for message archives, where the most common
deletion operation would be of the oldest entires, at the top of the
file. With this, all blocks that contain items to be removed could be
deleted without needing to read, delete and write out the whole file.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Wed, 07 Jun 2023 00:39:30 +0200 |
parent | 10515:35bf3b80480f |
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# MUC: Members-only rooms kick members who lose affiliation [Client] Romeo jid: user@localhost password: password [Client] Juliet jid: user2@localhost password: password ----- Romeo connects Romeo sends: <presence to="room@conference.localhost/Romeo"> <x xmlns="http://jabber.org/protocol/muc"/> </presence> Romeo receives: <presence from='room@conference.localhost/Romeo'> <x xmlns='http://jabber.org/protocol/muc#user'> <status code='201'/> <item jid="${Romeo's full JID}" affiliation='owner' role='moderator'/> <status code='110'/> </x> </presence> Romeo receives: <message type='groupchat' from='room@conference.localhost'><subject/></message> # Submit config form, set the room to members-only Romeo sends: <iq id='config1' to='room@conference.localhost' type='set'> <query xmlns='http://jabber.org/protocol/muc#owner'> <x xmlns='jabber:x:data' type='submit'> <field var='FORM_TYPE'> <value>http://jabber.org/protocol/muc#roomconfig</value> </field> <field var='muc#roomconfig_membersonly'> <value>1</value> </field> </x> </query> </iq> Romeo receives: <iq id="config1" from="room@conference.localhost" type="result"> </iq> # Romeo adds Juliet to the member list Romeo sends: <iq id='member1' to='room@conference.localhost' type='set'> <query xmlns='http://jabber.org/protocol/muc#admin'> <item affiliation='member' jid="${Juliet's JID}" /> </query> </iq> Romeo receives: <message from='room@conference.localhost'> <x xmlns='http://jabber.org/protocol/muc#user'> <item jid="${Juliet's JID}" affiliation='member' /> </x> </message> Romeo receives: <iq from='room@conference.localhost' id='member1' type='result'/> # Juliet connects, and joins the room Juliet connects Juliet sends: <presence to="room@conference.localhost/Juliet"> <x xmlns="http://jabber.org/protocol/muc"/> </presence> Juliet receives: <presence from="room@conference.localhost/Romeo" /> Juliet receives: <presence from="room@conference.localhost/Juliet" /> Juliet receives: <message type='groupchat' from='room@conference.localhost'><subject/></message> Romeo receives: <presence from="room@conference.localhost/Juliet" /> # Romeo removes Juliet's membership status Romeo sends: <iq id='member2' to='room@conference.localhost' type='set'> <query xmlns='http://jabber.org/protocol/muc#admin'> <item affiliation='none' jid="${Juliet's JID}" /> </query> </iq> # As a non-member, Juliet must now be removed from the room Romeo receives: <presence type='unavailable' from='room@conference.localhost/Juliet'> <x xmlns='http://jabber.org/protocol/muc#user'> <status code='321'/> <item role='none' jid="${Juliet's full JID}" affiliation='none'> <actor nick='Romeo' jid="${Romeo's full JID}"/> </item> </x> </presence> Romeo receives: <iq id='member2' type='result'/> Romeo disconnects Juliet disconnects