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69329
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Wed Mar 24 18:02:07 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Question | Linux | 3.14 | Re: automatically obtain entry ID from search | Hi Chris,
Additional the the HTTP request sugested by Stefan you could also use the search functionality of the elog python module.
For the HTTP request you may also need a way to provide credentials or transmit cookies, if the elog needs authentification.
I think your request to alter the samples logbook will be called with "execute new" or similar at submit time of the entry to the measurement logbook.
Then both methods will have the issue that elogd is still processing the submit and can't answer new requests until the old is finished.
Have a look at https://elog.psi.ch/elogs/Forum/69328 for possible workarounds.
Best wishes,
Sebastian
Stefan Ritt wrote: |
You would have to do that on the scrip level. Use "curl" to search a logbook. Like following URL would search for all entries in this forum where you are the authoer, then return the entries in CSV format:
https://elog.psi.ch/elogs/Forum/?mode=CSV1&Author=k%F6rner
Then you can parese this CSV file and extract the entry ID, which you can pass to the elog client to submit a new entry to the other logbook.
Stefan
Chris Körner wrote: |
Hi,
in our application I want to have, let's say in the simplest case, two logbooks. One as a database of samples we fabricated and one as a logbook for measurements. When a measurement on a sample is done and an entry is submitted to the 2nd logbook, I want to automatically edit or reply to the corresponding entry in the 1st logbook. For example I want to append a line in the free text field to have a full log of what happened to a sample there. We reference our samples with a unique auto-generated ID in both logbooks. Is is somehow possible to search the 1st logbook for that ID or any other attribute and obtain the elog entry ID since the elog client will need that ID for editing an entry?
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69334
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Thu Mar 25 12:50:08 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Question | Linux | 3.1.3-1-1 | Re: Pre-fill Attribute with last entry | I am glad, we could help.
I can see a caveat in the recommendation.
By having "Execute New = echo $attrib > /path/last_attrib" and "Preset attrib = $shell(cat /path/last_attrib)" as the most simple construction.
But there are cases, where /path/last_attrib can get out of sync with the elog by e.g. editing or deleting the last entry, which is the most likely one to edit or delete.
I am aware, that you can make the logic more complex to fix this issue,
but basically you have the same information stored in two locations and you have to keep them in sync for the system to be reliable.
I am not sure, if it will be more hassle to construct a script/config system to keep them in sync or to find a solution which gets the information from the elog database.
Dominic Schneider wrote: |
Thank you very much.
So far I testet all functionalities and scripts to reach my goal. I will post a dummy of the solution later on for future purposes.
Best wishes
Stefan Ritt wrote: |
That would actually be my recommendation. There is a "execute new" which you can call when submitting a new entry.
Stefan
Dominic Schneider wrote: |
Hi Stefan, hi Sebastian,
thank you for your help. Ok I see its not that simple.
Is there maybe a way of executing a Script on submitting, writing the values of the Attributes into an temporary file and loading the values from this file via a preset shell script when opening a NEW entry?
Best wishes & thanks in advance
Sebastian Schenk wrote: |
Sorry Stefan, but it is possible as you have the scripting ability.
The idea is to use "Preset Test_Attribute = $shell(script_to_get_the_last_entry)", where the script asks elog about the details and parses them.
The problem here is, that the elogd already is working to resolve the click on "new entry" request (or similar) and the script can't call elogd until the page is delievered, what is to late.
(If it would, the elogd will hang.)
So the script either has to directly parse all the entry.log files in the logbook folder or you need a second elogd running, which can answer the request from the script.
This second elogd could run on a different port and it doen't need to be public as it only answers internal requests and could use the same config as the "primary" elogd.
My idea for the script uses the python elog module to establish the connection and do the parsing.
I hope this helps as a workaround.
Best wishes,
Sebastian
Stefan Ritt wrote: |
Nope, there is no way to acces the last value of an attribute. Sorry.
Stefan
Dominic Schneider wrote: |
Hi all together,
I struggle a lot with the following problem:
I try to prefill certain attributes with the value of exactly the same attribute in the last entry made in the same logbook.
I know I have to go with Preset, tried a view hours and searched the forum but i didn't find a thing. Am I overlooking a flag, an option or whatever, or is there just not such a functionality (which I dont believe)?
I thought about:
Preset Test_Attribute = $Test_attribute
Preset Test_Attribute = Re:$Test_attribute
Preset Test_Attribute = $shell(Command to somehow get last entry and this attributes value)
Not succesful though.
I would be very thankful for help, thanks in advance.
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69337
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Tue Mar 30 18:08:37 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Question | Windows | 314-2 | Re: How to make personal ELOG to public | Dear Hien,
your problem is more general the question, how to get the elog to the network.
You have to open the port on your system to the network.
I would suggest to google "open port for webserver on windows".
As right now I would just do the same and follow a tutorial.
A remark here: elog by default runs at port 8080, if you haven't changed this, this is the port you should be opening to the network.
If the elog can be accessed in the local network and you want to open it to the whole internet,
then you need to configure your router/gateway/(company) firewall to allow forwarding of the port of the elog.
I can't give you tips here, at this is very user specific.
An other remark, i would suggest (for a productive environment) to use user authentication in the elog to restrict access.
If you do this, then you also should use https reverse proxy or have a read in the SSL section of the elog documentation.
As http only would transmit the credentials in plain text.
I hope, I could give you a route, what your next steps could be.
Best wishes,
Sebastian
> Dear experts,
>
> I am trying to use ELOG for my projects which we want to record every daily activities.
> I have successful installed the ELOG to the computer (Windows10 -64 bit).
> However, I don't know how to make it public or online, that people can access it from their computers.
> I am a very newer to the ELOG.
> Could you help me on it, please?
>
> Best regards,
> Hien. |
69350
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Fri Apr 23 15:46:39 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Bug report | Linux | ELOG V3.1.4-611 | Re: segfault in auth.c:366 | Hi Mr. Holman,
The problem you are facing is more likely the issue, that the LDAP method is only provided as-is from a different developer.
I had a similar issue with the LDAP of my university.
I can't remember the correct error messages, but it looks similar, which arises from the used c library for LDAP.
The LDAP connection response can have 2 different variable types and only one of them is implemented in the elog, the other one crashes the elog with segfault.
I could fix it with this patch:
https://bitbucket.org/merrx/elog/commits/5a75fdb3e0b723380dae73bb57653946ed72690c
Obviously you have to adapt "displayName" and "postOfficeBox" to represent the name and email attributes of your LDAP structure.
I didn't made a PR for this commit, because it would break the current LDAP implementation, i assume.
Best wishes,
Sebastian
gary holman wrote: |
Elog version: ELOG V3.1.4-611489ba
I am running openldap on the localhost. For some reason now, elogd is segfaulting when (I believe) when a new user is being added to the password file. For example:
1. I delete user passord file defined in elogd.cfg
2. Bind/Authenticate to LDAP successfully
3. Segfaults in auth.c ldap_adduser_file()
Makefile:
...
ELOGDIR = /opt/elog
DESTDIR = $(ROOT)$(PREFIX)/bin
SDESTDIR = $(ROOT)$(PREFIX)/sbin
RCDIR = $(ROOT)/etc/rc.d/init.d
SRVDIR = $(ROOT)/usr/lib/systemd/system
# flag for SSL support
USE_SSL = 1
# flag for Kerberos support, please turn off if you don't need Kerberos
USE_KRB5 = 0
# flag for LDAP support, please turn off if you don't need LDAP
USE_LDAP = 1# flag for PAM support, please turn of if you don't need PAM
USE_PAM = 0
...
For authentication, I am using openldap in the localhost:
----
Authentication = LDAP
LDAP server = ldap://localhost:389
LDAP userbase = ou=people,dc=example,dc=org
LDAP login attribute = uid
LDAP register = 1
Password file = /opt/elog/users
gdb output
----------
(gdb) run -s /opt/elog -c /opt/elog/elogd.cfg -f /var/run/elog/elog.pid
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/ubuntu/UPGRADE-42221/work-src/elog/elogd -s /opt/elog -c /opt/elog/elogd.cfg -f /var/run/elog/elog.pid
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
elogd 3.1.4 built Apr 22 2021, 19:19:39 revision 611489ba
File "/var/run/elog/elog.pid" exists, overwriting it.
CKeditor detected
ImageMagick detected
Indexing logbooks ... done
Server listening on port 9011 ...
Breakpoint 1, ldap_adduser_file (lbs=0x555556811ad8, user=0x7ffffffd3bd0 "testuser", password=0x5555558ea110 <_value+6000> "testuser", error_str=0x7ffffffd53d0 "", error_size=<optimized out>) at src/auth.c:350
350 if (rc != LDAP_SUCCESS) {
(gdb) n
337 rc = ldap_search_ext_s(
(gdb) n
350 if (rc != LDAP_SUCCESS) {
(gdb) n
358 for(entry = ldap_first_entry(ldap_ld,result);
(gdb) n
371 if(strcmp(attribute,"mail")==0 || strcmp(attribute,"rfc822Mailbox")==0)
(gdb) n
361 for(attribute = ldap_first_attribute(ldap_ld,entry,&ber);
(gdb) n
365 if((values = ldap_get_values(ldap_ld,entry,attribute)) != NULL ) {
(gdb) n
366 for(i=0; values[i] != NULL; i++) {
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
ldap_adduser_file (lbs=0x555556811ad8, user=0x7ffffffd3bd0 "testuser", password=0x5555558ea110 <_value+6000> "testuser", error_str=<optimized out>, error_size=<optimized out>) at src/auth.c:366
366 for(i=0; values[i] != NULL; i++) {
(gdb) p attribute
$1 = 0x5555567f6a20 "uid"
(gdb) p values
$2 = (char **) 0x567f74f0
This user in LDAP:
-------------------------
# TESTUSER, people, example.org
dn: uid=TESTUSER,ou=people,dc=example,dc=org
uid: TESTUSER
cn: TESTUSER
givenName: TESTUSER
sn:: VEVTVFVTRVIg
mail: TESTUSER
uidNumber: 10000
gidNumber: 10000
homeDirectory: /dev/null
objectClass: top
objectClass: posixAccount
objectClass: shadowAccount
objectClass: inetOrgPerson
objectClass: organizationalPerson
objectClass: person
userPassword:: e1NTSEF9Y21ua1lsdFpMZ3ZrZlZ4OUp3MFN3cUY3NWIzdkFCSWY=
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69357
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Mon Apr 26 16:41:50 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Question | Windows | V3.1.3-fd7f1e2 | Re: Real-time mirroring? | Hello Frank,
It seems, you are using the mirror function of elog. It should resolve conflicts by itself acording to the documented rules. (https://elog.psi.ch/elog/config.html)
As I don't use this function, I can't say how good it works.
If you don't want to use this function, I would suggest using the "Execute new | edit | delete" feature to trigger a script after each change of elog entries.
This script could itself run "rsync" or your sync solution to make the sync and
should afterwards call "killall -HUP elogd" on the remote to let elog re-read the config (and this sould also update the indices)
(see Server Configuration https://elog.psi.ch/elog/adminguide.html)
If you have a sync-solution, which itself permanently observes folders for changes and syncs it by itself,
It should have the option to run a command after sucessful sync or you need an other method to call "killall -HUP elogd" after sync.
Personally I would recommend the mirror function as it has a internal conflict resolution.
I hope this helps.
Best wishes,
Sebastian
PS: I don't know anything about your setup, but maybe there is a solution, where you don't need the local servers.
As I think, the mirror function is mainly for backup reasons of a main server to a secondary one or similar.
Frank Baptista wrote: |
Hello!
We have a number of local ELOG servers, all mirrored to a single "remote" ELOG server. We have users that create updates at the local server, and some at the remote server, which can run the risk of record conflicts. Right now, the local servers perform a "Mirror cron" every 5 minutes, but even that leaves the door open to potential conflicts.
I found an open-source JAVA-based app called DirSync Pro (https://www.dirsyncpro.org/) which is capable of performing real-time mirroring, and has conflict handling. I "took it for a spin", and it does do what it claims. However, because each ELOG server performs record "indexing", it doesn't recognize records that aren't part of the current list of records. Restarting the ELOG server obviously corrects that, but I was wondering if there is another way to get the server to recognize newer "remotely-generated" records without restarting the server.
As always, I'm appreciative for the outstanding working that has been done to make ELOG the great application that it is!
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69361
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Fri Apr 30 21:13:39 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Question | Windows | V3.1.3-fd7f1e2 | Re: Real-time mirroring? | Hi Frank,
I am not sure, if I understood your setup correctly. But in my eyes, you don't need the local elog servers. The only difference for the users at the chambers would be to directly use the 'mirror' remote elog url instead of the local elog url in their browsers. "which is regularly updated..." could mean, that you are using some kind of automatism to add entries to the local elogs, but you could also use these directly on the remote
If you have concers about users editing the wrong chamber elog, there is a usermanagement to only allow certain users to certain elogs (on the remote).
As for the part "having a record conflict". That would be totally fine and handled by the mirror function.
See the part "If new entries exist locally and remotely having the same entry ID"... in the documentation of the function.
As you state, that you are working on windows. There is no "killall" command to send the signal, as far as i know.
Then a script could kill the elog and start it again. But this should have the disadvantage of loosing the login session of the users.
Best wishes,
Sebastian
Frank Baptista wrote: |
Hi Sebatian,
Thank you for taking the time to answer...very much appreciated!
Although I'm running Windows OS, I do understand your approach, and will work on an analogous solution.
Our setup is interesting -- we're running many temperature chambers, each one having a dedicated computer running a unique instance of ELOG, each of which is regularly updated to let users know what the progress is for the lengthy temperature testing. All of these individual logbooks regularly synchronize to a common 'mirror' ELOG server, which shows all the logbooks in one location. Users can view all the logbooks on one screen, by connecting to the mirror server. Since this can be done remotely, it also makes it convenient to add "updates" remotely to the mirror server, which eventually synchronizes with each individual computer at the temperature chambers. As you might imagine, if there is a user doing an update at the temperature chamber computer while another user enters an update remotely to the mirror server, there is a chance of having a record conflict.
I was trying to avoid conflicts by having real-time mirroring, where a change on either end is detected and immediately "synchronized", thereby reducing or eliminating conflicts.
In any case, if I do come up with a good solution for Windows, I'll be sure to share what I did.
Cheers,
Frank
Sebastian Schenk wrote: |
Hello Frank,
It seems, you are using the mirror function of elog. It should resolve conflicts by itself acording to the documented rules. (https://elog.psi.ch/elog/config.html)
As I don't use this function, I can't say how good it works.
If you don't want to use this function, I would suggest using the "Execute new | edit | delete" feature to trigger a script after each change of elog entries.
This script could itself run "rsync" or your sync solution to make the sync and
should afterwards call "killall -HUP elogd" on the remote to let elog re-read the config (and this sould also update the indices)
(see Server Configuration https://elog.psi.ch/elog/adminguide.html)
If you have a sync-solution, which itself permanently observes folders for changes and syncs it by itself,
It should have the option to run a command after sucessful sync or you need an other method to call "killall -HUP elogd" after sync.
Personally I would recommend the mirror function as it has a internal conflict resolution.
I hope this helps.
Best wishes,
Sebastian
PS: I don't know anything about your setup, but maybe there is a solution, where you don't need the local servers.
As I think, the mirror function is mainly for backup reasons of a main server to a secondary one or similar.
Frank Baptista wrote: |
Hello!
We have a number of local ELOG servers, all mirrored to a single "remote" ELOG server. We have users that create updates at the local server, and some at the remote server, which can run the risk of record conflicts. Right now, the local servers perform a "Mirror cron" every 5 minutes, but even that leaves the door open to potential conflicts.
I found an open-source JAVA-based app called DirSync Pro (https://www.dirsyncpro.org/) which is capable of performing real-time mirroring, and has conflict handling. I "took it for a spin", and it does do what it claims. However, because each ELOG server performs record "indexing", it doesn't recognize records that aren't part of the current list of records. Restarting the ELOG server obviously corrects that, but I was wondering if there is another way to get the server to recognize newer "remotely-generated" records without restarting the server.
As always, I'm appreciative for the outstanding working that has been done to make ELOG the great application that it is!
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69364
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Tue May 4 15:24:56 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Bug report | Linux | 3.1.2 | Re: Bug: "Append on edit" triggers too often | I can confirm the issue also for "prepend on edit".
To be more precise, it gets executed everytime the condition state changes, if placed in the config without condition, or if placed in a condition, everytime the condition gets activated.
Faith wrote: |
The command "Append on edit = " is getting executed everytime, when a dropdown menu is changed. This happens even at the first creation of an entry, so the append text stucks up multiple times in the text body.
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69368
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Thu Jun 3 16:02:02 2021 |
| Sebastian Schenk | sebastian.schenk@physik.uni-halle.de | Question | Windows | 3.1.4-3 | Re: Problem with a self-compiled code. | Hello Maxim,
I just stumbled on a similar issue. Also with a self-compiled elogd on Ubuntu.
We also use a custom css and by clicking on the "New" or "Reply" or "Duplicate" the elog generates the entry editor.
On the first load of this page the link to the css file is sometimes corrupted by having some garbage characters in it.
<link rel="stylesheet" type="text/css" href="ƒŒüthemes/name.css">
I found the bug in the code and made a PR on the bitbucket. Here is the commit to fix it yourself.
https://bitbucket.org/merrx/elog/commits/cea193ded7161bb6d1f67725ca109d2d4341128a
Best wishes,
Sebastian
Maxim wrote: |
Dear, sir! There is a problem with a configuration file.
The code was compiled by Cygwin (gcc-core, gcc-g++, make, gdb, libssl-dev). After a compilation a reference to our own css-file was written in configuration file and css-file was included in a folder “themes/default” of the project.
The problem is that in running elog-3.1.4-1 (and upper versions) css-file name in a code of a page has some random symbols before file-name, for example: <link rel="stylesheet" type="text/css" href="ø9öÿeLogOUK.css">. It was found that the problem is resolved if a string “Password file=passwd” is deleted, but in this case it is impossible to set passwords to the users.
Here is an example of configuration file which is taken from the forum and just one string (CSS=elogOUK.css) has added to the code
____________________________________________________________________
What can be done to resolve this problem?
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