[librecat-dev] queue failing to start or stop

[Jonathan NORRIS]

Do you mean the pid files that usually exist in the log folder? 
'librecat-cmd-worker-datacite.pid' for example?

Because in this case they don't actually exist while I am getting this 
error.

Jonathan

On 12/18/18 13:10, Nicolas Franck wrote:
> I see this all the time.
>
> Can only be fixed by deleting the pid files
>
>> On 18 Dec 2018, at 13:07, Jonathan NORRIS <jnorris at ist.ac.at 
>> <mailto:jnorris at ist.ac.at>> wrote:
>>
>> Hello,
>>
>> I am having an issue with starting or stopping a queue using 
>> bin/librecat queue start/stop.
>>
>> If I try to start a queue I receive this message:
>>
>> /var/storage/librecat# bin/librecat queue start
>> Starting mailer...Can't use an undefined value as a subroutine 
>> reference at /var/storage/librecat/local/lib/perl5/Proc/Launcher.pm 
>> line 834.
>> OK
>> Starting datacite...Can't use an undefined value as a subroutine 
>> reference at /var/storage/librecat/local/lib/perl5/Proc/Launcher.pm 
>> line 834.
>> OK
>>
>> The status shows nothing started up:
>>
>> Server version: 1.0.6
>> Workers:
>> | fd | ip        | id | functions |
>> |----|-----------|----|-----------|
>> | 32 | 127.0.0.1 | -  |           |
>> Status:
>> | function | queued | busy | free | running |
>> |----------|--------|------|------|---------|
>> | datacite | 0      | 0    | 0    | 0       |
>> | mailer   | 0      | 0    | 0    | 0       |
>>
>>
>> I can starting them manually with the workers command like so:
>>
>> /var/storage/librecat# bin/librecat worker datacite start --workers 2 
>> --supervise
>> LAUNCHED CHILD PROCESS: pid=7889 
>> log=logs/librecat-cmd-worker-datacite.supervisor.log
>> starting daemon: librecat-cmd-worker-datacite.1
>> LAUNCHED CHILD PROCESS: pid=7890 
>> log=logs/librecat-cmd-worker-datacite.1.log
>> starting daemon: librecat-cmd-worker-datacite.2
>> LAUNCHED CHILD PROCESS: pid=7891 
>> log=logs/librecat-cmd-worker-datacite.2.log
>>
>> The status says they are up:
>>
>> Server version: 1.0.6
>> Workers:
>> | fd | ip        | id | functions |
>> |----|-----------|----|-----------|
>> | 33 | 127.0.0.1 | -  | datacite  |
>> | 34 | 127.0.0.1 | -  |           |
>> | 32 | 127.0.0.1 | -  | datacite  |
>> Status:
>> | function | queued | busy | free | running |
>> |----------|--------|------|------|---------|
>> | datacite | 0      | 0    | 2    | 2       |
>> | mailer   | 0      | 0    | 0    | 0       |
>>
>>
>> Then I try to stop with the queue command:
>>
>> /var/storage/librecat# bin/librecat queue stop
>> Stopping datacite...Can't use an undefined value as a subroutine 
>> reference at /var/storage/librecat/local/lib/perl5/Proc/Launcher.pm 
>> line 834.
>> OK
>> Stopping mailer...Can't use an undefined value as a subroutine 
>> reference at /var/storage/librecat/local/lib/perl5/Proc/Launcher.pm 
>> line 834.
>> OK
>>
>> The status says they are still up:
>>
>> Server version: 1.0.6
>> Workers:
>> | fd | ip        | id | functions |
>> |----|-----------|----|-----------|
>> | 34 | 127.0.0.1 | -  |           |
>> | 33 | 127.0.0.1 | -  | datacite  |
>> | 32 | 127.0.0.1 | -  | datacite  |
>> Status:
>> | function | queued | busy | free | running |
>> |----------|--------|------|------|---------|
>> | datacite | 0      | 0    | 2    | 2       |
>> | mailer   | 0      | 0    | 0    | 0       |
>>
>>
>>
>> Here is where it is failing in Launcher.pm:
>>
>> sub read_log {
>>     my ( $self, $subref ) = @_;
>>
>>     my $name = $self->daemon_name;
>>
>>     while ( my $line=$self->file_tail->read ) {
>>         chomp $line;
>>         $subref->( "$name: $line" ); <----------- line 834
>>     }
>>
>>     return 1;
>> }
>>
>>
>>
>> Has anyone seen this before or have any ideas as to why this is 
>> happening?
>>
>>
>> Thanks,
>> Jonathan Norris
>> IST Austria
>>
>>
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>

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