90 lines
2.5 KiB
Perl
90 lines
2.5 KiB
Perl
package App::Netdisco::Backend::Role::Manager;
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use Dancer qw/:moose :syntax :script/;
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use List::Util 'sum';
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use App::Netdisco::Util::MCE;
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use App::Netdisco::JobQueue
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qw/jq_locked jq_getsome jq_lock jq_warm_thrusters/;
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use Role::Tiny;
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use namespace::clean;
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sub worker_begin {
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my $self = shift;
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my $wid = $self->wid;
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return debug "mgr ($wid): no need for manager... skip begin"
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if setting('workers')->{'no_manager'};
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debug "entering Manager ($wid) worker_begin()";
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# job queue initialisation
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debug "mgr ($wid): building acl hints (please be patient...)";
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jq_warm_thrusters;
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# requeue jobs locally
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debug "mgr ($wid): searching for jobs booked to this processing node";
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my @jobs = jq_locked;
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if (scalar @jobs) {
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info sprintf "mgr (%s): found %s jobs booked to this processing node",
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$wid, scalar @jobs;
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$self->{queue}->enqueuep(100, @jobs);
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}
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}
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# creates a 'signature' for each job so that we can check for duplicates ...
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# it happens from time to time due to the distributed nature of the job queue
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# and manager(s) - also kinder to the DB to skip here rather than jq_lock()
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my $memoize = sub {
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no warnings 'uninitialized';
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my $job = shift;
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return join chr(28), map {$job->{$_}}
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(qw/action port subaction/, ($job->{device_key} ? 'device_key' : 'device'));
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};
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sub worker_body {
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my $self = shift;
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my $wid = $self->wid;
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if (setting('workers')->{'no_manager'}) {
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prctl sprintf 'nd2: #%s mgr: inactive', $wid;
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return debug "mgr ($wid): no need for manager... quitting"
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}
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while (1) {
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prctl sprintf 'nd2: #%s mgr: gathering', $wid;
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my $num_slots = 0;
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my %seen_job = ();
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$num_slots = parse_max_workers( setting('workers')->{tasks} )
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- $self->{queue}->pending();
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debug "mgr ($wid): getting potential jobs for $num_slots workers";
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foreach my $job ( jq_getsome($num_slots) ) {
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next if $seen_job{ $memoize->($job) }++;
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# mark job as running
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next unless jq_lock($job);
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info sprintf "mgr (%s): job %s booked out for this processing node",
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$wid, $job->id;
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# copy job to local queue
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$self->{queue}->enqueuep($job->job_priority, $job);
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}
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#if (scalar grep {$_ > 1} values %seen_job) {
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# debug 'WARNING: saw duplicate jobs after getsome()';
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# use DDP; debug p %seen_job;
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#}
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debug "mgr ($wid): sleeping now...";
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prctl sprintf 'nd2: #%s mgr: idle', $wid;
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sleep( setting('workers')->{sleep_time} || 1 );
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}
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}
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1;
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