Category: Uncategorized

Now that I’m hosting this in the same place as my main log, it wants to become my main log’s brother. It wants me to tell it all about whatever spiritual hiccups have smeared my professional programming today. It wants to be my tech confessional. But I’m refraining. Perhaps it might get lucky and be used as a non programming tech log one day.

Currently, I’m struggling with Backwards design issues, specifically storage issues. This stuff, while not quite as dull as rule based information extraction or user input validation, is still pretty dull, and every time I think about it I think about downloading Zope 3 and using that and then I come to my senses and realise that I’d have to rewrite the whole thing.

It’s a backend problem. puzzling.org has always been pretty much a simple tree in structure so the filesystem makes sense as a storage mechanism. Except when it doesn’t, in precisely those cases when puzzling.org stops looking like a tree. For example, consider the logs. their tree structure is: root, year, month, day. However, I want the leaves of the tree (the entries) to be a doubly linked list, ie to have previous and next links.

I can search the tree in this case (if I’m looking or the entry before the 1st of January, I crawl up to the root and down into the previous year to find the 31st of December), but if I decide not to, I need to calculate some data and store it somewhere. Where? Well, I only have made 566 diary entries over the past three years, I could just about store the list in memory. But if I don’t, I need to figure out where to put it.

The case for a links blog (which doesn’t exist yet) is harder. If it is to look like my del.icio.us page, each url needs to be associated with a title, a description and a list of categories. But the sane web tree configuration is root, category, url, (as opposed to root, url, category) which means being able to make the "what urls are in this category?" query easily. When urls are in multiple categories, how do you represent that in the filesystem with a < O(n) complexity query time (n being the total number of urls)? Symlinks?

Well, it’s a trick question as far as I can see. The filesystem’s fairly strict tree structure and limited query mechanisms mean that it isn’t a good backend for this. Which means databases of course. Which means researching databases and choosing between them and learning to use my choice and dependencies (because Nevow isn’t a major dependency, no!) and ew. Hmph. I like the filesystem.

So Dave Winer has pulled all (most?) of the free weblogs.com content. Authors can, at some point, take advantage of a one time offer to get a copy of their content. Nice Dave, good boy. In the mean time, criticism is supposedly muted because people’s content is being ‘held hostage’ for at least the rest of the month. (I don’t actually know about that, all I’ve read is the criticism. I haven’t bothered with the nicey-nice stuff.) [Update in the interests of completeness: there is now a transition plan to 90-day free hosting on buzzword.com. Content has been restored.]

A couple of things concern me about this. One is this persistent notion that’s probably been around since the beginning of time and will probably be around until the end that having the right to do something is a justification for doing that thing. (Hint: "but I’m allowed to do that" is a non-defence against criticisms of your failures of courtesy, generosity or general personability. The whole point of that stuff is that it requires you to do more for others than the bare minimum that you’re compelled to do.)

The other is this notion that if you’re getting something for free, you deserve what you get when it all turns sour. As others have noticed, this is the same stuff that was levelled at people who were shocked about Movable Type’s new licencing schemes. Mark Pilgrim re-wrote that debate in his terms in his Freedom 0 essay. What the people who wanted something for free did wrong wasn’t trying to get something for free ("something free", if you don’t like people playing fast-and-loose with the multiple senses of "free"), it was not getting a guarantee of that freedom. Hopefully Shelley Powers can do something similar with her thoughts on The Value of Free:

There’s nothing wrong with not doing the free thing. However, there’s also nothing wrong with the people who accepted the free thing, freely given… Each person who accepted these free things also gave something back in return: whether it was bodies when webloggers were few, or grateful acknowledgement when webloggers were many. Though those who have benefited from these free services in the past should be grateful, they don’t deserve to be called "cheap" or cut loose without warning. Free does not equate to no value.

Shelley Powers

The point of money is to abstract over some notion of value in a way that allows values to be compared. It’s efficient to be able to compare price tags. But the consistent confusion of money and the value it represents in some cases is concerning for all kinds of reasons. Limiting concern to Free Software alone, it would mean that there is no quality without money; that there are no ethical obligations without money; and that nothing of value is exchanged without money.

My personal instincts about this favour social changes that move from a rights based discussion ("I’m allowed to do this, I’m not compelled to do that") to a courtesy and generosity based discussion. What were the nice things Dave Winer could have done if he couldn’t provide free hosting anymore? What’s an ethical way to write software? What’s an appropriately thankful way to use it? I know, oh, I know that people have been talking in these terms for thousands of years too. I still wish they’d do it more often.

This thing has been around for a day and already people have asked me about comments. I don’t get asked about comments for the other log very much. I turned them on on Livejournal (this is cross-posted) with some trepidation and it’s worked out surprisingly well.

There are two main reasons I’ve avoided comments or web editing in Backwards. The first is that I’m not a big user of web editing: I’ve had too many crashes that cost me work, accidental cuts I can’t undelete, and old cached copies of the page in the form (thank you Zope 2, or was that Squid?). Plus it’s always someone else’s UI and they’ve always set something to be too small. The other reason is that input validation is currently competing with rule based information extraction (just don’t even ask) for my "least exciting programming chore" award. The beauty of writing the entire site myself is that I don’t have to check for malicious mark up, logins, cookies and other horrible things. I have all the power, no one else has any. Easiest authentication problem ever.

But it all comes down to the fact that I instinctively dislike the idea of comments on puzzling.org because it’s all mine, precious. Maybe I’ve spent too much time in the wrong comments threads, but I just don’t see the appeal of spending however many millions of hours I’ve spent this year in order to give people a forum to attack me and a guaranteed audience for their troll-fest. I want to put a click between me and my critics. Given the Livejournal experiment, this is a bit silly: people use my comments to say things like "let’s go crazy Spanish style" rather than "I will eat your young, ignorant evil-doer." Even so. Precious. One day someone’s spam robot would leave a comment and I’d feel personally violated.

There’s a pot and kettle problem though, because I prefer it when other people leave comments on (or in the case of my fellows who write their own CMS, write a comments system and then leave it on). There’s a certain social niche comments fill. Writing an entry to say "happy birthday" or "wasn’t it a nice day?" in response to other people’s entries is a noise problem more than a social activity. Sending an email works a bit better, but people are protective of their inboxes. Plus you miss out on interaction between commenters.

Wow, it really is possible to talk yourself into things isn’t it? Good thing I didn’t try and balance out the pros and cons of writing input validation, or I’d be spending today adding a comment facility to this thing. As it is I need to add some features for Andrew so that I can acquire my first user.

The extended absence of advogato.org has finally goaded me into doing what I’ve considered doing for ages on and off: moving my tech log to a server I control. I’m sure I’m far from alone too, especially since advogato.org posters showed up frequently on the Planets. I may work out some way of cross-posting, but I’m not sure anyone read the advogato version of this. It appears on various aggregators, hopefully they will all point at the new version soon.

Who would have thought that puzzling.org would be at all close to advogato.org in reliability?

Moving my tech log, or at least the bits of it that I had archived on my desktop, helped me iron out a bunch of kinks in Backwards too. It’s coming along nicely and maybe I’ll even do a tarball release and suggest it to the unwary on #twisted.web in a few months. Still, I had to change a large amount of code just to get it to let me use two logs with one install, so perhaps it isn’t quite that sound yet.

Incidentally, a side-effect of this is that entries I make on eyes will no longer appear on LinuxChix Live. You can subscribe to it directly if you’re interested though.

Heads up: A call for Python related papers for the first Australian OSDC (Open Source Developers’ Conference) went to the python-au list this afternoon.

The OSDC is between the 1st and 3rd December 2004 in Melbourne. It sounds like there will be a whole 12 hours between that and ALTA‘s summer school and workshop… in Sydney! Pfft, there’s just about time to drive between them with that kind of timing.

I’m tempted to work up a paper for OSDC, because I sure won’t have one for ALTW. It’s a pity my Python expertise is a proper subset of spiv‘s. And I’ve been doing web development again anyway, and it lacks awesomeness. Perhaps I need to develop newer and cooler Python expertise in a hurry.

Hats off to pppoeconf. It’s all so simple, post wailing and gnashing of teeth. (You think I speak figuratively? Not so! There’s a reason I’m not employed as a sysadmin.) Put ADSL modem in bridge mode, time expenditure until Eureka: some hours. pppoeconf, time expenditure until pon: 1 minute. Done!

And now that I have returned to the land of broadband, I hope never to have to look at the Whirlpool forums ever again.

Linux Australia has opened their campaign against clauses of the recent US-Australia trade agreement. Relevant issues are Australian anti-circumvention and software patent laws.

If I have time to work up a response for the Senate committee, I’ll probably make it available here.

SLUG

Just as my formal involvement in SLUG is about to end (a new committee is being elected Friday night, and I’m not standing), I find that I’m putting a lot of time and thought into it again. But… I’m still not standing. I figure that being able to choose my level of involvement will stop me periodically burning out and getting resentful.

Also, I can then focus on helping get hacksig off the ground. I’ve gotten just about everything I need from SLUG in terms of using Linux. I’m not personally interested in advocacy, except possibly in the legal arena. Clearly, a programming group is the next step.

Linux

I’m well past where I ever expected to get with Linux: I’m a competent single machine or home network, small-size, non-critical sysadmin. Finding that out was nearly as big a surprise as finding out that I was confident programming.

But I don’t want to go any further with it. I try not to make decisions like this: I am generally uncomfortable with saying I want no more knowledge. But honestly, I know what I want to know. Need only, not desire, will push me further.

Twisted

Twisted is a whole other kettle of fish. I find that I need to find a four or five hour solid block of time to get writing done, and I only have that time on weekends. But weekends also have the unfortunate side-effect of containing family birthdays, moving days and house cleaning.

To be fair, I’ve spent the last few weeks working (finally! finally!) on the re-write of my website that has been on the drawing board for well over two years. It is somewhere between three and six hours from deployment. During that time, I’ve spent zero hours writing documentation.

I feel silly in many ways putting so much effort into a website. It’s certainly not something that people seem to admire. I’m putting a negative spin on everyone’s reactions there though. Most people I know are programmers, and a large number of them simply don’t like writing, or don’t like it enough to want to build a house for their writing. I do like it, and building a CMS is a natural consequence. Or so I will maintain from here on in.

Aside from this, while my wrist pain has improved with a better arrangement at work, I do need to be careful about typing when I’m not being paid for it. I need some HTML macros for my editor (stat) because the < and > signs seem to bring on weakness and discomfort quickly.

Travel plans

I’m planning to zip around the world, or parts thereof, starting in September or so. I’d better hurry up, I’m not even at the budgeting stage.

Life plans

It is suddenly horribly clear that I need to decide whether to do a PhD and where to do this hypothetical degree in a hurry. I need to have a supervisor and some kind of topic before I leave Australia in September if I’m to do it here, and I need to think about funding, GREs, applications, interviews, visas and spiv if I want to do it in the UK or US. (If I do it in the US, I also need to think bout all that time.) And if I don’t do it, I should think about what the hell else to do. I envy spiv his attachment to programming as a vocation, I myself am simply part of the indecisive masses.

It’s been at least a couple of years since I really settled into programming. I can take code and change it without understanding the whole thing. I can guess at the function of libraries, or read their source to find what I need. I write some amount of code that ‘just works’.

But it still surprises me, every time.

Today the first pain of RSS-as-anything-at-all bit me, with someone on Planet Twisted embedding very wide text in <pre> tags, causing (for most viewers, not for me) the main column to expand to the right to accomodate the rogue <pre>.

I got a nice mail suggesting that the cross browser fix for this is to convert:

 <pre> blah  blahblah blah</pre> 

to:

 <div style="font-family:monospace;"> blah&nbsp;&nbsp;blahblah<br> blah</div> 

(There’s not meant to be a line-wrap in that second example, but I’m being kind to the Planet Twisted readers &mdash oh, rendering HTML in HTML is hard!)

But let’s face it, fixing other people’s HTML for them is nightmarish. Start with <pre> tags, end up with… well, writing a complete HTML parser/sanitiser for Planet. So I’m being a wimp and not doing it. I hope.