X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/724d58d4cffb3ba91c7c33cf2ef02b907cd36be5..512d860c169d776885922b7eaff0bcb2b722f12a:/doc/todo/transient_pages.mdwn diff --git a/doc/todo/transient_pages.mdwn b/doc/todo/transient_pages.mdwn index ea1ff6a8f..1a35dddb1 100644 --- a/doc/todo/transient_pages.mdwn +++ b/doc/todo/transient_pages.mdwn @@ -15,13 +15,15 @@ This would also be useful for autoindex, as suggested on [[plugins/autoindex/discussion]]. I'd also like to use it for [[plugins/contrib/album]]. -One refinement I'd suggest is that if the transient page is edited, -its transient contents are evaluated and used as the initial -content for the edit box; after that, it'd become a static page. --[[smcv]] +It could also be used for an [[todo/alias_directive]]. + +--[[smcv]] -------------------------- [[!template id=gitbranch branch=smcv/ready/transient author="[[smcv]]"]] +[[!template id=gitbranch branch=smcv/ready/transient-recentchanges author="[[smcv]]"]] +[[!template id=gitbranch branch=smcv/ready/transient-tag author="[[smcv]]"]] [[!tag patch]] I think this branch is now enough to be useful. It adds the following: @@ -31,17 +33,21 @@ as an underlay. I'm not sure whether this should be a plugin or core, so I erred on the side of more plugins; I think it's "on the edge of the core", like goto. -Pages with the default extension in the transient underlay are automatically +Pages in the transient underlay are automatically deleted if a page of the same name is created in the srcdir (or an underlay closer to the srcdir in stacking order). +With the additional `ready/transient-tag` branch, `tag` enables `transient`, and if `tag_autocreate_commit` is set to 0 (default 1), autocreated tags are written to the transient underlay. There is a regression test. +With the additional `transient-autoindex` branch, `autoindex` uses autofiles. It also enables `transient`, and if `autoindex_commit` is set to 0 (default 1), autoindexes are written to -the transient underlay. There is a regression test. +the transient underlay. There is a regression test. However, this branch +is blocked by working out what the desired behaviour is, on +[[todo/autoindex_should_use_add__95__autofile]]. > I wonder why this needs to be configurable? I suppose that gets back to > whether it makes sense to check these files in or not. The benefits of @@ -52,22 +58,69 @@ the transient underlay. There is a regression test. > but does it make sense to make that wart larger? > * You can know you can build the same site with nothing missing > even if you don't there enable autoindex or whatever. (Edge case.) -> + +>> I'm not sure that that's a huge wart; you can always "edit by +>> overwriting". If you're running a local clone of the wiki on your laptop +>> or whatever, you have the underlays already, and can copy from there. +>> Tag and autoindex pages have rather simple source code anyway. --s + > The benefit of using transient pages seems to just be avoiding commit > clutter? For files that are never committed, transient pages are a clear > win, but I wonder if adding configuration clutter just to avoid some > commit clutter is really worth it. -> + +>> According to the last section of +>> [[todo/auto-create_tag_pages_according_to_a_template]], [[chrysn]] and +>> Eric both feel rather strongly that it should be possible to +>> not commit any tags; in [[plugins/autoindex/discussion]], +>> lollipopman and [[JoeRayhawk]] both requested the same for autoindex. +>> I made it configurable because, as you point out, +>> there are also reasons why it makes sense to check these +>> automatically-created files in. I'm neutral on this, personally. +>> +>> If this is a point of contention, would you accept a branch that +>> just adds `transient` and uses it for [[plugins/recentchanges]], +>> which aren't checked in and never have been? I've split the +>> branch up in the hope that *some* of it can get merged. +>> +>>> I will be happy to merge transient-recentchanges when it's ready. +>>> I see no obstacle to merging transient-tag either, and am not +>>> really against using it for autoindex or aggregate either +>>> once they get completed. +>>> I just wanted to think through why configurability is needed. +>>> --[[Joey]] +>> +>> One potentially relevant point is that configuration clutter only +>> affects the site admin whereas commit clutter is part of the whole +>> wiki's history. --[[smcv]] + > Anyway, the configurability > appears subtly broken; the default is only 1 if a new setup file is -> generated. With an existing setup file, the 'default' values in +> generated. (Correction: It was not even the default then --[[Joey]]) +> With an existing setup file, the 'default' values in > `getsetup` don't take effect, so it will default to undef, which > is treated the same as 0. --[[Joey]] +>> Fixed in the branches, hopefully. (How disruptive would it be to have +>> defaults take effect whenever the setup file doesn't set a value, btw? +>> It seems pretty astonishing to have them work as they do at the moment.) --s + +>>> Well, note that default is not actually a documented field in +>>> getsetup hooks at all! (It is used in IkiWiki.pm's own `getsetup()`, and +>>> the concept may have leaked out into one or two plugins (comments, +>>> transient)). +>>> +>>> Running getsetup at plugin load time is something I have considered +>>> doing. It would simplify some checkconfig hooks that just set hardcoded +>>> defaults. Although since dying is part of the getsetup hook's API, it +>>> could be problimaric. +>>> --[[Joey]] + autoindex ignores pages in the transient underlay when deciding whether to generate an index. -New recent changes go in the transient underlay; I tested this manually. +With the additional `ready/transient-recentchanges` branch, new recent +changes go in the transient underlay; I tested this manually. Not done yet (in that branch, at least): @@ -78,12 +131,19 @@ Not done yet (in that branch, at least): > Hmm, I'd at least want that to be dealt with before this was used > by default for autoindex or tag. --[[Joey]] + >> I'll try to work out which of the checks are required for security + >> and which are just nice-to-have, but I'd appreciate any pointers + >> you could give. Note that my branch wasn't meant to enable either + >> by default, and now hopefully doesn't. --[[smcv]] + * Transient tags that don't match any pages aren't deleted: I'm not sure that that's a good idea anyway, though. Similarly, transient autoindexes of directories that become empty aren't deleted. > Doesn't seem necessary, or really desirable to do that. --[[Joey]] + >> Good, that was my inclination too. --s + * In my `untested/transient` branch, new aggregated files go in the transient underlay too (they'll naturally migrate over time). I haven't tested this yet, it's just a proof-of-concept. @@ -94,18 +154,68 @@ Not done yet (in that branch, at least): >> Here are some other things I'd like to think about first: --[[Joey]] >> >> * There's a FIXME in autoindex. +>> +>> > Right, the extra logic for preventing autoindex pages from being +>> > re-created. This is taking a while, so I'm going to leave out the +>> > autoindex part for the moment. The FIXME is only relevant +>> > because I tried to solve +>> > [[todo/autoindex should use add__95__autofile]] first, but +>> > strictly speaking, that's an orthogonal change. --s + >> * Suggest making recentchanges unlink the transient page >> first, and only unlink from the old location if it wasn't >> in the transient location. Ok, it only saves 1 syscall :) +>> +>> > Is an unlink() really that expensive? But, OK, fixed in the +>> > `ready/transient-recentchanges` branch. --s + +>> >> It's not, but it's easy. :) --[[Joey]] + >> * Similarly it's a bit worrying for performance that it >> needs to pull in and use `Cwd` on every ikiwiki startup now. >> I really don't see the need; `wikistatedir` should >> mostly be absolute, and ikiwiki should not chdir in ways >> that break it anyway. +>> +>> > The reason to make it absolute is that relative underlays +>> > are interpreted as relative to the base underlay directory, +>> > not the cwd, by `add_underlay`. +>> > +>> > The updated `ready/transient-only` branch only loads `Cwd` if +>> > the path is relative; an extra commit on branch +>> > `smcv/transient-relative` goes behind `add_underlay`'s +>> > back to allow use of a cwd-relative underlay. Which direction +>> > would you prefer? +>> > +>> > I note in passing that [[plugins/autoindex]] and `IkiWiki::Render` +>> > both need to use `Cwd` and `File::Find` on every refresh, so +>> > there's only any point in avoiding `Cwd` for runs that don't +>> > actually refresh, like simple uses of the CGI. --s + +>> >> Oh, right, I'd forgotten about the horrificness of File::Find +>> >> that required a chdir for security. Ugh. Can we just avoid +>> >> it for those simple cases then? (demand-calculate wikistatedir) +>> >> --[[Joey]] + >> * Unsure about the use of `default_pageext` in the `change` >> hook. Is everything in the transientdir really going >> to use that pageext? Would it be better to look up the >> complete source filename? +>> +>> > I've updated `ready/transient` to do a more thorough GC by +>> > using File::Find on the transient directory. This does +>> > require `File::Find` and `Cwd`, but only when pages change, +>> > and `refresh` loads both of those in that situation anyway. +>> > +>> > At the moment everything in the transientdir will either +>> > have the `default_pageext` or be internal, although I +>> > did wonder whether to make [[plugins/contrib/album]] +>> > viewer pages optionally be `html`, for better performance +>> > when there's a very large number of photos. --s + +>> >> Oh, ugh, more File::Find... Couldn't it just assume that the +>> >> transient page has the same extension as its replacement? +>> >> --[[Joey]] --------------------------