[Glass] Cannot load Metacello nor Glass in Glass itself (spot bug)

Thu Jan 16 22:42:39 PST 2014

Btw, the things to try below are for *after* the download failed and you end up with a 'broken' GitHub repo in your image. I typically also get that when restoring a backup locally. At that point the github repo has lost its link to the github-cache directory (because it's no longer there at the place I restore the backup). Doing a metacello load then fails because the repository is empty but a new download is not triggered. So I remove all and clear the cache to trigger a download.
I also noticed you end up in the same situation if the download failed.

Johan

> On 17 Jan 2014, at 02:38, Dale Henrichs <dale.henrichs at gemtalksystems.com> wrote:
> 
> Johan,
> 
> I fixed the error handling, but in Mariano's case he has multiple linux users (with incompatible file permissions) trying to overwrite the same file and the permissions will just not allow that ...
> 
> 
>> On Thu, Jan 16, 2014 at 2:38 PM, Johan Brichau <johan at yesplan.be> wrote:
>> Mariano,
>> 
>> Here are a couple of things I know to work when I hit this kind of issues:
>> 
>> Is the github repository present in your list when you open metacello? Remove it.
>> Is it present in the github-cache on disk? Remove it.
>> Clear the Monticello cache (from Monticello tool).
>> 
>> Often, I find this helps. Hope it helps for you.
>> 
>> Johan
>> 
>>> On 16 Jan 2014, at 22:43, Mariano Martinez Peck <marianopeck at gmail.com> wrote:
>>> 
>>> 
>>> 
>>> 
>>>> On Thu, Jan 16, 2014 at 5:53 PM, Dale Henrichs <dale.henrichs at gemtalksystems.com> wrote:
>>>> Mariano,
>>>> 
>>>> The github downloads aren't very good at providing good error messages ... I have recently (in last month) improved some of the error handling for github, but those improvements are only in the github repo and if you can't download from github then you probably aren't using them...
>>>> 
>>> 
>>> Indeed. But something is weird: I could successfully bootstrap GLASS, using the installGLASS you provided me...doesn't this script use any github repo????
>>>  
>>>> But your use case of running multiple glass users (at the linux level) is probably not accounted for  in the github implementation so additional work needs to be done there to accomodate multiple users on the same machine using Metacello ...
>>>> 
>>> 
>>> ouch.....
>>>  
>>>> I've submitted a metacello bug[1] to track the issue ...
>>>> 
>>>> Until I can fix the bug, you the code  there are a number of methods that make the assumption that /tmp can be used as a temporary dumping ground for files:
>>>> 
>>>>   MCGitHubRepository class>>projectDirectoryFrom:version:
>>>>   MetacelloGemStonePlatform>>downloadFile:to:
>>>>   MetacelloGemStonePlatform>>extractRepositoryFrom:to:
>>>> 
>>>> Presumably these methods could be hacked to replace the use of '/tmp' with a suitable image-specific replacement ... where you can set the root temp directory to something that works for you ... this is probably the route I will take for the final solution ...
>>> 
>>> Thanks. I indeed found other files in /tmp which were owned by a different system user... I have removed them like "sudo rm github*" and "sudo rm curl*".
>>> 
>>> Still...same problem. I then tried stopping and starting stone again. Still, same problem. Finally I drop the extent and I bootstrapped everything from scratch again...why? because I thought some class var or something could have been persisted with wrong stuff or garbage. So I started again with that just bootstrapped glass and an empty /tmp and that worked!!!
>>> 
>>> So I should wait for your fix to have multiple system users sharing the same /tmp, right?
>>> 
>>> Let me know if I can be of help.
>>> 
>>> Thanks, 
>>> 
>>>> 
>>>> Dale
>>>> 
>>>> [1] https://github.com/dalehenrich/metacello-work/issues/232
>>>> 
>>>> 
>>>>> On Thu, Jan 16, 2014 at 11:51 AM, Mariano Martinez Peck <marianopeck at gmail.com> wrote:
>>>>> Hi guys,
>>>>> 
>>>>> I have managed to install Glass into a base extent using the installGlass script provided by Dale. I am running this with a special user, not DataCurator, but with similar privileges. I can install Glass, but then as soon as I try to download something with Metacello...I get a spec resolution error....
>>>>> It is important to note that all gems/netldi/stone are also running with its own system user. 
>>>>> 
>>>>> I am trying to download this for example:
>>>>> 
>>>>>   Metacello new
>>>>> 	baseline:  'Metacello';
>>>>> 	repository: 'github://dalehenrich/metacello-work:master/repository';
>>>>> 	get.
>>>>> 
>>>>> First, I found a bug in #extractRepositoryFrom: zipFile to: directory
>>>>> I was getting a simple GoferRepositoryError with no clear message. AFter debugging a bit, I found that such a method was end up doing something like:
>>>>> 
>>>>> /usr/bin/unzip -u /tmp/github.zip -d /home/Testing/github-cache/dalehenrich/metacello-work/master 2> /tmp/zip.err
>>>>> 
>>>>> Problem was that I ALREADY had a /tmp/zip.err but that was written with another SO user... and defined unix file permission, didn't allow to write it with a different user..hence I was getting a permission denied which ended in sending #contentsOfEntireFile to nil...
>>>>> So would it be possible to write zip.err with a more specific name? like per stone or something...or give write access to other ... 
>>>>> 
>>>>> Anyway....I remove the file with sudo and then it continue...but still getting a spec resolution error...but what is funny here is that I don't get ANY error nor repository error.. the line " self resolvePackageSpecReferences: packageSpec gofer: gofer  " simply returns an empty array....
>>>>> 
>>>>> Any idea what could be?  any bell? remember, custom system operating user (not sudoer), custom gemstone user, custom glass install, ... so yeah, kind of sounds like I should get problems hahahah
>>>>> 
>>>>> Thanks, 
>>>>> 
>>>>> 
>>>>> -- 
>>>>> Mariano
>>>>> http://marianopeck.wordpress.com
>>>>> 
>>>>> _______________________________________________
>>>>> Glass mailing list
>>>>> Glass at lists.gemtalksystems.com
>>>>> http://lists.gemtalksystems.com/mailman/listinfo/glass
>>>>> 
>>>> 
>>> 
>>> 
>>> 
>>> -- 
>>> Mariano
>>> http://marianopeck.wordpress.com
>>> _______________________________________________
>>> Glass mailing list
>>> Glass at lists.gemtalksystems.com
>>> http://lists.gemtalksystems.com/mailman/listinfo/glass
> 
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