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On 4/1/19 5:17 PM, Michal Kamil Simon wrote: > Hi Adrian, Hi! > Regarding the parsing problem of your URLs, it's not a > problem of our implementation. As a metalink is basically > an xml file you simply need to escape certain characters > or you need to use CDATA. > > Try something like: > > <url><*![CDATA[* /your URL with alice token/ *]]>*</url> well, i tried :( see https://sev.spacescience.ro/adrian/meta/alice_cern.ch_user_a_asevcenc_testfile.meta4 but i get : xrdcp -N -p -P -f -v alice_cern.ch_user_a_asevcenc_testfile.meta4 testfile_downloaded.txt Prepare: [ERROR] Received corrupted data: Malformed or corrupted metalink file. > in your metalink file (it did work for me ;-) so, what am i missing? Thanks a lot! Adrian > > Cheers, > Michal > ________________________________________ > From: Adrian Sevcenco > Sent: 01 April 2019 15:30 > To: Michal Kamil Simon; [log in to unmask] > Subject: Re: xrootd python :: CopyProcess - stop the queue if a job succeed > > On 4/1/19 4:12 PM, Michal Kamil Simon wrote: > > Hi Adrian, > > > > You cannot use a metalink as a destination, but you can use > yeah, i know that :P > > > a metalink as a source for a remote destination ;-) > this the concept that i did not thought about :) > > Thanks! > Adrian > > > > > > Cheers, > > Michal > > ________________________________________ > > From: Adrian Sevcenco > > Sent: 01 April 2019 15:02 > > To: Michal Kamil Simon; [log in to unmask] > > Subject: Re: xrootd python :: CopyProcess - stop the queue if a job succeed > > > > On 4/1/19 3:20 PM, Michal Kamil Simon wrote: > >> Hi Adrian, > >> > >> The name attribute specifies the destination file name > >> (or a relative path to the file as in the example), however keep > >> in mind that the destination might be remote. > > hmmm, i thought that metalink files are only for download > > > >> To give you an example: > >> > >> / xrdcp input.meta4 root://hostname//path/dir/ > >> > >> and say the name attribute is /subdir/file.txt/ > >> > >> the effective destination will be: > >> /root://hostname//path/dir/subdir/file.txt/ > >> > >> however if you overwrite the destination file name in /xrdcp/ command > >> line, e.g.: > >> > >> xrdcp input.meta4 /root://hostname//path/dir/file.txt/ > >> > >> the name attribute will be ignored. > >> > >> Hope this makes it more clear :-) > > yeah, i just ignored the fact that it can be used with remote destinations > > > > well, thanks for info :) > > looking forward for the fix :) > > > > Thanks a lot! > > Adrian > > > > > >> > >> Cheers, > >> Michal > >> ________________________________________ > >> From: Adrian Sevcenco > >> Sent: 01 April 2019 13:22 > >> To: Michal Kamil Simon; [log in to unmask] > >> Subject: Re: xrootd python :: CopyProcess - stop the queue if a job succeed > >> > >> On 4/1/19 1:10 PM, Michal Kamil Simon wrote: > >> > Hi Adrian, > >> Hi! > >> > >> > Thanks for providing an example metalink, indeed > >> > it seems there is a problem with parsing a metalink > >> > that contains urls with alice tokens. I'll provide a fix for > >> > that. > >> Thanks a lot!! > >> > >> > Regarding the destination, you are suppose to specify > >> > possible sources in the metalink, but it must not contain > >> > the destination, which has to be specified as for any other > >> > copy job. > >> well, https://tools.ietf.org/html/rfc5854#section-4.1.2.1 > >> metalink:file elements MUST have a "name" attribute, which contains > >> the local file name to which the downloaded file will be written. > >> > >> This is why i said that destination should not be required... > >> but of course is not hard for me to take care to use the same destination > >> file as it is written in the meta4 file > >> > >> Thanks a lot! > >> Adrian > >> > >> > >> > > >> > Cheers, > >> > Michal > >> > ________________________________________ > >> > From: Adrian Sevcenco > >> > Sent: 31 March 2019 00:09 > >> > To: Michal Kamil Simon; [log in to unmask] > >> > Subject: Re: xrootd python :: CopyProcess - stop the queue if a job succeed > >> > > >> > On 3/28/19 5:31 PM, Michal Kamil Simon wrote: > >> >> Hi Adrian, > >> > Hi Michal! > >> > > >> >> If (for now) you simply want to download a file having different > >> >> replicas (with > >> >> different names, etc.) a metalink is what you need. Have a look at: > >> > cool! it is perfect for my need > >> > > >> >> https://en.wikipedia.org/wiki/Metalink#Example_Metalink_4.0_.meta4_file > >> >> > >> >> you can create a metalink containing different URLs and assign priorities > >> >> to them. You could e.g. generate the metalink from python and then use a > >> >> local metalink as source in the CopyProcess. > >> >> > >> >> Once we release 4.9.1 you will be also able to do a multi-source download > >> >> using a metalink. > >> >> > >> >> However, this wont work for uploads. > >> > of course! > >> > > >> > I made one for testing, > >> > https://sev.spacescience.ro/adrian/meta/alice_cern.ch_user_a_asevcenc_testfile.meta4 > >> > > >> > but it seems that there are problems : > >> > 1. the url part is not parsed properly > >> > > >> > 2. the usage require a destination (but that is required and included in > >> > the metalink) - so maybe if the source is meta4 the destination is taken > >> > from the meta file and no longer required in cli? > >> > > >> > I am sure that there is a problem with the url parsing because the same > >> > url works for a normal add_job copy request > >> > > >> > Additional question for when it will be working : > >> > for the python part - add_Job, will take as source this .meta4 file? > >> > > >> > Thank you!! > >> > Adrian > >> > > >> >> > >> >> Cheers, > >> >> Michal > >> >> ________________________________________ > >> >> From: Adrian Sevcenco > >> >> Sent: 28 March 2019 16:03 > >> >> To: Michal Kamil Simon; [log in to unmask] > >> >> Subject: Re: xrootd python :: CopyProcess - stop the queue if a job succeed > >> >> > >> >> On 3/28/19 4:35 PM, Michal Kamil Simon wrote: > >> >> > Hi Adrian, > >> >> Hi! > >> >> > >> >> > My impression (correct me if I'm wrong) is that you are trying to do > >> >> a multi-source transfer, > >> >> > right? > >> >> well, that would have been the optimal result, but at this moment i was > >> >> just trying > >> >> to download a file while trying all replicas > >> >> > >> >> > If so, you need to specify in the CopyProcess the sourceLimit, and as > >> >> a source you need > >> >> > to specify a metalink containing all the replicas, or a manager (in > >> >> this case the client will > >> >> > figure out what the replicas are by itself by using locate). > >> >> my case is a little special ... the same file have multiple replicas > >> >> that have _different_ physical names > >> >> and authz envelopes ... > >> >> as a client i have all required info.. i know for my logical file name > >> >> /alice/cern.ch/user/a/asevcenc/testfile > >> >> that the actual links are : > >> >> root://eosalice.cern.ch:1094//06/17419/a7f1c690-4e49-11e9-8a64-0242266c4d21?_LONG_STRING_OF_OPTIONS_ > >> >> and > >> >> root://ipngridxrd0.in2p3.fr:1094//06/17419/a7f1c690-4e49-11e9-8a64-0242266c4d21?_LONG_STRING_OF_OPTIONS_ > >> >> > >> >> how can i create/what is the format of a metalink? > >> >> can i somehow put toghether the remote links from above? > >> >> > >> >> would the same mechanism work for upload? > >> >> > >> >> > I just pushed a patch for the client that is enabling multi-source > >> >> download in python bindings > >> >> > (63e9604) and will port it for 4.9.1. > >> >> great! thanks a lot!!! > >> >> > >> >> Adrian > >> >> > >> >> > >> >> > > >> >> > Cheers, > >> >> > Michal > >> >> > ________________________________________ > >> >> > From: [log in to unmask] [[log in to unmask]] on > >> >> behalf of Adrian Sevcenco [[log in to unmask]] > >> >> > Sent: 28 March 2019 14:22 > >> >> > To: [log in to unmask] > >> >> > Subject: xrootd python :: CopyProcess - stop the queue if a job succeed > >> >> > > >> >> > Hi! In my use case (ALICE), to download a file, i get all replicas > >> >> > and i add them as copy jobs to a CopyProcess .. > >> >> > I would like to stop the CopyProcess when a job is succesful .. > >> >> > Is there a way to do this? > >> >> > Maybe in MyCopyProgressHandler.end() to check if results['status'] have > >> >> > a "status: 0" and cancel all CopyProcess? > >> >> > Is there a way to stop a CopyProcess? or other way to take into > >> >> account the posibility > >> >> > of multiple replicas? > >> >> > > >> >> > Thank you! > >> >> > Adrian > >> >> > > >> >> > > >> >> > ######################################################################## > >> >> > Use REPLY-ALL to reply to list > >> >> > > >> >> > To unsubscribe from the XROOTD-L list, click the following link: > >> >> > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1 > >> >> > > >> > > >> > > >> > >> > > > > > > > > ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1