[EP-tech] Adding 301 redir_permanent for some migrated items before 404 kicks in.

[yurj at alfa.it (Yuri)]

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Wow, this wiki page exceeds any expectation, thanks! Very nice work.

I think the RewriteMap part is ok. If you want to support older systems (Eprints 3.2 for example), an urls.pl is already defined in lib/defaultcfg/cfg.d containing:

$c->{rewrite_exceptions} = [ '/cgi/', '/archive/' ];

so dropping z_rewrite_exceptions.pl will overwrite it. In Eprints 3.3 it works like 3.4 so this does not happen.

In our migration, I've created newid.txt with all the end URLs inside, even the ones that redirect to the new server, so only one file is needed and opened by Apache. You could use the RewriteMap approach also for internal redirects but it is very rare in Eprints.

The handler approach is the most flexible and the trigger one is the most sustainable over time (just a config). I agree that with a lot of entries, the rewrite_exceptions array search is not the most efficient so the trigger approach (using an hash) is the best one (efficiency, quite flexible and sustainable). In our migration we was using Eprints 3.2, the trigger was not available.


Il 16/02/23 22:16, John Salter via Eprints-tech ha scritto:
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I've put together a Wiki page with Yuri and my suggestions (and a bonus one - if you love mod_perl 2) on it.

https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.eprints.org%2Fw%2FRedirect_specific_eprints_to_somewhere_else&data=05%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7C97e0bdc56fa54fbd0df108db10bf8b0a%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638122187073242879%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=haRCpS9kGvbcUzR22DGD%2FuMvTLWa6vesRhW%2F38dqUtM%3D&reserved=0<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.eprints.org%2Fw%2FRedirect_specific_eprints_to_somewhere_else&data=05%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7C97e0bdc56fa54fbd0df108db10bf8b0a%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638122187073399078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=0M%2FKh3AOh2LjvPP30FqOergCuhEZEOoBGTz0BYQCmtE%3D&reserved=0>

Yuri: can you check I've documented / understood your approach properly:
https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.eprints.org%2Fw%2FRedirect_specific_eprints_to_somewhere_else%23Apache_RewriteMap_solution&data=05%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7C97e0bdc56fa54fbd0df108db10bf8b0a%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638122187073399078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=uaO%2F9MB9NGsIcKe0g5pBeqoiDBUjaADfCluMF%2Bza5Bc%3D&reserved=0<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.eprints.org%2Fw%2FRedirect_specific_eprints_to_somewhere_else%23Apache_RewriteMap_solution&data=05%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7C97e0bdc56fa54fbd0df108db10bf8b0a%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638122187073399078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=uaO%2F9MB9NGsIcKe0g5pBeqoiDBUjaADfCluMF%2Bza5Bc%3D&reserved=0>

Feel free to add / update / question the page as necessary!

Cheers,
John


From: eprints-tech-bounces at ecs.soton.ac.uk<mailto:eprints-tech-bounces at ecs.soton.ac.uk> [mailto:eprints-tech-bounces at ecs.soton.ac.uk] On Behalf Of Matthew Brady via Eprints-tech
Sent: 16 February 2023 02:40
To: eprints-tech at ecs.soton.ac.uk<mailto:eprints-tech at ecs.soton.ac.uk>
Subject: Re: [EP-tech] Adding 301 redir_permanent for some migrated items before 404 kicks in.

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Hi John and Yuri,

Thanks for the suggestions.
Its great to have an active mailing list.

Cheers

Matt.
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