| Commit message (Collapse) | Author | Age | Files | Lines |
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directory servers
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understand and debug since it's such a critical piece of the delivery chain
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everything breaks revert or debug.
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There were 11 main types of changes:
- UPDATE's and DELETE's sometimes had LIMIT 1 at the end of them. This is not only non-compliant but
it would certainly not do what whoever wrote it thought it would. It is likely this mistake was just
copied from Friendica. All of these instances, the LIMIT 1 was simply removed.
- Bitwise operations (and even some non-zero int checks) erroneously rely on MySQL implicit
integer-boolean conversion in the WHERE clauses. This is non-compliant (and bad programming practice
to boot). Proper explicit boolean conversions were added. New queries should use proper conventions.
- MySQL has a different operator for bitwise XOR than postgres. Rather than add yet another dba_
func, I converted them to "& ~" ("AND NOT") when turning off, and "|" ("OR") when turning on. There
were no true toggles (XOR). New queries should refrain from using XOR when not necessary.
- There are several fields which the schema has marked as NOT NULL, but the inserts don't specify
them. The reason this works is because mysql totally ignores the constraint and adds an empty text
default automatically. Again, non-compliant, obviously. In these cases a default of empty text was
added.
- Several statements rely on a non-standard MySQL feature
(http://dev.mysql.com/doc/refman/5.5/en/group-by-handling.html). These queries can all be rewritten
to be standards compliant. Interestingly enough, the newly rewritten standards compliant queries run
a zillion times faster, even on MySQL.
- A couple of function/operator name translations were needed (RAND/RANDOM, GROUP_CONCAT/STRING_AGG,
UTC_NOW, REGEXP/~, ^/#) -- assist functions added in the dba_
- INTERVALs: postgres requires quotes around the value, mysql requires that there are not quotes
around the value -- assist functions added in the dba_
- NULL_DATE's -- Postgres does not allow the invalid date '0000-00-00 00:00:00' (there is no such
thing as year 0 or month 0 or day 0). We use '0001-01-01 00:00:00' for postgres. Conversions are
handled in Zot/item packets automagically by quoting all dates with dbescdate().
- char(##) specifications in the schema creates fields with blank spaces that aren't trimmed in the
code. MySQL apparently treats char(##) as varchar(##), again, non-compliant. Since postgres works
better with text fields anyway, this ball of bugs was simply side-stepped by using 'text' datatype
for all text fields in the postgres schema. varchar was used in a couple of places where it actually
seemed appropriate (size constraint), but without rigorously vetting that all of the PHP code
actually validates data, new bugs might come out from under the rug.
- postgres doesn't store nul bytes and a few other non-printables in text fields, even when quoted.
bytea fields were used when storing binary data (photo.data, attach.data). A new dbescbin() function
was added to handle this transparently.
- postgres does not support LIMIT #,# syntax. All databases support LIMIT # OFFSET # syntax.
Statements were updated to be standard.
These changes require corresponding changes in the coding standards. Please review those before
adding any code going forward.
Still on my TODO list:
- remove quotes from non-reserved identifiers and make reserved identifiers use dba func for quoting
- Rewrite search queries for better results (both MySQL and Postgres)
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a missing top-level post to match it with. So we'll send a request back to the sender that you've never seen this thread and please send a fresh copy of the entire conversation to date. We could soon have posts in the matrix from different platforms from days gone by, which have been migrated into the modern world. We'll be polite and not deliver these to everybody. However, if someone comments on one of these antique threads we wouldn't be able to see it in our own matrix because we won't have a copy of the parent post. So this rectifies that situation. Be aware that item deletion may need to change to keep "hard deleted" items indefinitely so that they don't keep coming back. We'll have to null out the important data of the former item to accomplish the deletion aspect.
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HUBLOC_OFFLINE instead. Filter this as well from deliveries.
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tools to implement mod_hubman
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a whole slew of FIXMEs
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physical delivery (I'm keeping delivery turned off until some of the bugs are fixed so we don't cause inifinite loops or network meltdowns) - now it's just a matter of going through and methodically finding all the bugs
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notifier is setup to take hublocs, not xchans.
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allowing them to be sent. We do have to figure out how some secondary delivery chains are ending up with posts belonging to the original owner instead of the chain owner, but that's for another day.
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dealing with owner relays that have more than one channel instance. If things melt down in the next few hours and I'm not available please revert this. I've reviewed a few times and think it's OK, but this part of the delivery code is traditionally touchy.
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emails across your channels
also try to handle the wretched mess of broken and duplicated hublocs that fred.cepheus.uberspace.de typically reports
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changes, re-queue failed directory sync packets, fix account_id index in queue creation, be more selective about updating hubloc_connected (only when we're talking to the associated site). But we still need a way to flag dead accounts and these mechanisms won't cut it, because it isn't a requirement that channels communicate with anybody, except for contacting the directory when the account is created. I think we need to make every channel ping the directory once a month. Then we can find those that have not done so (after syncing with other directories). We can't have the directory just flag dead accounts as this would create a way for an anti-social attacker to become a directory server and mark all the accounts dead.
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uplink back to them without any ambiguity.
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directory sync. Please do not mess with any of this.
Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this. Please do not mess with any of this.
OK? Understood?
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posts have recipients.
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connections get a fresh update.
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out the delete notifications for the entire batch to all recipients of the original post are not complete and will take quite a bit more work. As a consequence, expire has been completely disabled until it is fully implmented since it could result in completely un-removable posts reminiscent of the infamous "Bonnie Nadri" incident at Diaspora which we do not wish to re-live.
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that is blocked)
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posts
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updates
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travelling posts
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databases with stale entries
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