Re: [orion-dev] Another question about Server API / File API

[John Arthorne <John_Arthorne@xxxxxxxxxx>]

"Kozyura, Vitaly" <v.kozyura@xxxxxxx>
wrote on 08/22/2013 10:14:15 AM:

> 1.       How do I create file
with “no-overwrite” ? 

Create is the same as copy/move. It is a POST on the
destination directory with X-Create-Options: no-overwrite

> 2.       What if I want to “move,no-overwrite”
a directory A to the 
> place B and there is only an empty directory B there ? Still 412 ?

No overwrite is required here. Overwrite only applies
to files, so this should succeed.

John


>  
> From: orion-dev-bounces@xxxxxxxxxxx [mailto:orion-dev-bounces@xxxxxxxxxxx]
> On Behalf Of John Arthorne
> Sent: Donnerstag, 22. August 2013 15:44
> To: Orion developer discussions
> Subject: Re: [orion-dev] Another question about Server API / File
API
>  
> Hi Vitaly, 
> 
> I was the author of the server file implementation, and I missed 
> your questions because I was away on holiday for the past two weeks.
> There are some incorrect details here. If you perform copy, move,
or
> create with "no-overwrite" header, and there is a conflicting
file 
> at the destination, then the entire operation fails. You should get
> a 412 "precondition failed" response from the server. If
you see a 
> case where this does not happen, please open a bug. This is 
> documented in the API here: 
> 
> http://wiki.eclipse.org/Orion/Server_API/File_API#Notes_on_POST_method
> 
> These copy/move overwrite semantics were copied from WebDAV (apart
> from the header names): 
> 
> http://tools.ietf.org/html/rfc4918#section-9.9.3
> 
> If you have any more questions feel free to ask and I will try to
> answer. If you see inconsistencies between spec and implementation,
> please open bug reports. 
> 
> John 
> 
> 
> 
> 
> From:        "Kozyura, Vitaly" <v.kozyura@xxxxxxx>
> To:        Orion developer discussions <orion-dev@xxxxxxxxxxx>,
> Date:        08/14/2013 06:41 AM 
> Subject:        Re: [orion-dev] Another question
about Server API / File API 
> Sent by:        orion-dev-bounces@xxxxxxxxxxx

> 
> 
> 
> 
> Hi Simon, 
>   
> Ok. I understand your point. And probably the empty directories on
> the source side should be deleted (?). 
> From my perspective such “move, no-overwrite” produces a strange
> remains on the source side, bit if this is Orion specification, I
> can live with it. 
>   
> Thank you for the explanation. 
> Vitaly 
>   
>   
> From: orion-dev-bounces@xxxxxxxxxxx [mailto:orion-dev-bounces@xxxxxxxxxxx]
> On Behalf Of Simon Kaegi
> Sent: Dienstag, 13. August 2013 20:15
> To: Orion developer discussions
> Subject: Re: [orion-dev] Another question about Server API / File
API 
>   
> Indeed. I should have clarified that case. 
> The move is a best effort so that all files that can be successfully
> moved are. If the files cannot be moved (because a file exists 
> already and no-overwrite is set) they are "not deleted"
and will 
> remain in the source directory.
> 
> -Simon
> 
> [image removed] Mike Wilson---08/13/2013 11:51:00 AM---Definitely
> not ideal, if true. McQ. 
> 
> [image removed] 
> From: 
> 
> [image removed] 
> Mike Wilson/Ottawa/IBM@IBMCA 
> 
> [image removed] 
> To: 
> 
> [image removed] 
> Orion developer discussions <orion-dev@xxxxxxxxxxx>, 
> 
> [image removed] 
> Date: 
> 
> [image removed] 
> 08/13/2013 11:51 AM 
> 
> [image removed] 
> Subject: 
> 
> [image removed] 
> Re: [orion-dev] Another question about Server API / File API 
> 
> [image removed] 
> Sent by: 
> 
> [image removed] 
> orion-dev-bounces@xxxxxxxxxxx
> 
>  
> 
> 
> 
> 
> 
> Definitely not ideal, if true.
> 
> McQ.
> 
> [image removed] "Kozyura, Vitaly" ---2013/08/13 10:36:40---Does
it 
> mean existing files will be skiped and nevertheless deleted from the
> source destination? Fro
> 
> From: "Kozyura, Vitaly" <v.kozyura@xxxxxxx>
> To: Orion developer discussions <orion-dev@xxxxxxxxxxx>, 
> Date: 2013/08/13 10:36
> Subject: Re: [orion-dev] Another question about Server API / File
API
> Sent by: orion-dev-bounces@xxxxxxxxxxx 
> 
> 
> 
> 
> 
> Does it mean existing files will be skiped and nevertheless deleted
> from the source destination?
> 
> 
> From: orion-dev-bounces@xxxxxxxxxxx [mailto:orion-dev-bounces@xxxxxxxxxxx]
> On Behalf Of Simon Kaegi
> Sent: Dienstag, 13. August 2013 16:21
> To: Orion developer discussions
> Cc: Orion developer discussions; orion-dev-bounces@xxxxxxxxxxx
> Subject: Re: [orion-dev] Another question about Server API / File
API
>   
> 1) Perform a "copy, no-overwrite"
> 2) Delete the source folder and all sub-files and folders.
> 
> [image removed] "Kozyura, Vitaly" ---08/13/2013 09:54:45
AM---Hi 
> Simon, Thank you for the explanation.   
> 
> [image removed] 
> From: 
> 
> [image removed] 
> "Kozyura, Vitaly" <v.kozyura@xxxxxxx> 
> 
> [image removed] 
> To: 
> 
> [image removed] 
> Orion developer discussions <orion-dev@xxxxxxxxxxx>, 
> 
> [image removed] 
> Date: 
> 
> [image removed] 
> 08/13/2013 09:54 AM 
> 
> [image removed] 
> Subject: 
> 
> [image removed] 
> Re: [orion-dev] Another question about Server API / File API 
> 
> [image removed] 
> Sent by: 
> 
> [image removed] 
> orion-dev-bounces@xxxxxxxxxxx
> 
>  
> 
> 
> 
> 
> 
> 
> Hi Simon,
> 
> Thank you for the explanation.
> 
> Could you describe me in the same way “move, no-overwrite”? 
> 
> Regards,
> Vitaly
> 
> From: orion-dev-bounces@xxxxxxxxxxx [mailto:orion-dev-bounces@xxxxxxxxxxx]
> On Behalf Of Simon Kaegi
> Sent: Dienstag, 13. August 2013 15:44
> To: Orion developer discussions
> Subject: Re: [orion-dev] Another question about Server API / File
API
>   
> For copy with no-overwrite we will "try"
to copy every file and 
> folder only skipping files that already exist. 
> e.g.
> 1) If a folder already exists that's fine and any sub-file and 
> folder copy operations will continue.
> 2) If a file already exists we will skip it.
> 
> -Simon
> 
> [image removed] "Kozyura, Vitaly" ---08/12/2013 03:36:57
AM---Hi 
> Mark, Thank you for the explanation.   
> 
> [image removed] 
> From: 
> 
> [image removed] 
> "Kozyura, Vitaly" <v.kozyura@xxxxxxx> 
> 
> [image removed] 
> To: 
> 
> [image removed] 
> Orion developer discussions <orion-dev@xxxxxxxxxxx>, 
> 
> [image removed] 
> Date: 
> 
> [image removed] 
> 08/12/2013 03:36 AM 
> 
> [image removed] 
> Subject: 
> 
> [image removed] 
> Re: [orion-dev] Another question about Server API / File API 
> 
> [image removed] 
> Sent by: 
> 
> [image removed] 
> orion-dev-bounces@xxxxxxxxxxx
> 
>  
> 
> 
> 
> 
> 
> 
> 
> Hi Mark,
> 
> Thank you for the explanation.
> 
> What should happen if by “copy directory, no-overwrite” one file
> inside of the destination directory already exists?
> Should the whole command be canceled?
> What if only the empty destination directory exists?
> 
> Regards,
> Vitaly
> 
> 
> 
> From: orion-dev-bounces@xxxxxxxxxxx [mailto:orion-dev-bounces@xxxxxxxxxxx]
> On Behalf Of Mark Macdonald
> Sent: Freitag, 9. August 2013 18:13
> To: Orion developer discussions
> Subject: Re: [orion-dev] Another question about Server API / File
API
> 
> Hi Vitaly,
> 
> Here are, taken from the Orion source code, the current values that
> can go into X-Create-Options. (This is not an exhaustive list: more
> options may be added in future, and implementations are required to
> ignore unrecognized options.)   
> copy   
> move   
> no-overwrite
> Valid combinations are produced by taking one
of either "copy" or 
> "move", and optionally adding "no-overwrite".
Hence the valid 
> combinations are:   
> copy 
> move 
> copy,
> no-overwrite
> (order doesn't matter)   
> move,no-overwrite  (order doesn't matter)
> Thanks for pointing out that these details were
missing from the 
> Server API docs. I have added them to the wiki.
> 
> Mark
> 
> 
> On Wed, Aug 7, 2013 at 11:21 AM, Kozyura, Vitaly <v.kozyura@xxxxxxx>
wrote:
> 
> Hi all,
> 
> I have another question about Orion File API.
> 
> What are the possible values for  X-Create-Options ?
> And what are the allowed combinations of this values ?
> 
> Is there some detailed documentation about it ?
> 
> Thanks in advance,
> Vitaly
> 
> 
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