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package Svsh::Perp; |
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use Moo; |
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use namespace::clean; |
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our $DEFAULT_BASEDIR = $ENV{PERP_BASE} || '/etc/perp'; |
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with 'Svsh'; |
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=head1 NAME |
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Svsh::Perp - perp support for svsh |
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=head1 DESCRIPTION |
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This class provides support for L |
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to L - the supervisor shell. |
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=head2 DEFAULT BASE DIRECTORY |
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As per the L documentation, |
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C does not have a default base directory, but will check if a C environment |
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variable is set, and if not, will try C. This class will do the same if |
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a base directory is not provided to C. |
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=head1 IMPLEMENTED METHODS |
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Refer to L for complete explanation of these methods. Only changes from |
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the base specifications are listed here. |
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=head2 status() |
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C provides more information about service statuses then |
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other supervisors. C means the service is down but should be |
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up (unexpected down), C means the service is down because |
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it was manually stopped, C means the service is restarting, |
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and C means the service is attempting to start (possibly failing, |
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not necessarily). |
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=cut |
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sub status { |
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my $statuses = {}; |
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foreach ($_[0]->run_cmd('perpls', '-b', $_[0]->basedir, '-g')) { |
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chomp; |
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my @m = m/^ |
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\[ |
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.\s # the perpd status |
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(.)(.)(.)\s # the process status |
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... # the logger status |
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\]\s+ |
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(\S+)\s+ # the process name |
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(?: |
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uptime:\s+ |
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([^\/]+)s # the process uptime |
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\/ |
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\S+s # the logger uptime |
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\s+ |
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pids:\s+ |
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([^\/]+) # the process pid |
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\/ |
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\S+ # the logger pid |
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)? # optional because inactive services will not have this |
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/x; |
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my $status = $m[0] eq '+' ? $m[2] eq 'r' ? 'resetting' : 'up' : |
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$m[0] eq '.' ? 'down' : |
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$m[0] eq '!' ? 'backoff' : |
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$m[0] eq '-' ? 'disabled' : 'unknown'; |
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$statuses->{$m[3]} = { |
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status => $status, |
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pid => $status eq 'up' ? $m[5] : '-', |
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duration => $status eq 'up' ? $m[4] eq '-' ? 0 : int($m[4]) : 0 |
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}; |
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} |
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return $statuses; |
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} |
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=head start( @services ) |
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This uses the C option of C instead of C or C, see |
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L why. |
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=cut |
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sub start { |
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$_[0]->run_cmd('perpctl', '-b', $_[0]->basedir, 'A', @{$_[2]->{args}}); |
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} |
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=head stop( @services ) |
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This uses the C option of C instead of C or C, as there |
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seems to be a bug(?) where processes stopped with this option failed to |
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start again when the L method is called. |
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=cut |
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sub stop { |
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$_[0]->run_cmd('perpctl', '-b', $_[0]->basedir, 'X', @{$_[2]->{args}}); |
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} |
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=head restart( @services ) |
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=cut |
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sub restart { |
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$_[0]->run_cmd('perpctl', '-b', $_[0]->basedir, 'q', @{$_[2]->{args}}); |
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} |
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=head2 signal( $signal, @services ) |
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=cut |
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sub signal { |
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my ($sign, @sv) = @{$_[2]->{args}}; |
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# convert signal to perpctl command |
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$sign =~ s/^sig//i; |
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my $cmd = $sign =~ m/^usr(1|2)$/i ? $1 : lc(substr($sign, 0, 1)); |
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$_[0]->run_cmd('perpctl', '-b', $_[0]->basedir, $cmd, @sv); |
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} |
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=head2 fg( $service ) |
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=cut |
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sub fg { |
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# find out the pid of the logging process |
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my $text = $_[0]->run_cmd('perpstat', '-b', $_[0]->basedir, $_[2]->{args}->[0]); |
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my $pid = ($text =~ m/log:.+\(pid (\d+)\)/)[0] |
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|| die "Can't figure out pid of the logging process"; |
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# find out the current log file |
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my $logfile = $_[0]->find_logfile($pid) |
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|| die "Can't find out process' log file"; |
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$_[0]->run_cmd('tail', '-f', $logfile, { as_system => 1 }); |
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} |
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=head2 rescan() |
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=cut |
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sub rescan { |
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$_[0]->run_cmd('perphup', $_[0]->basedir); |
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} |
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=head2 terminate() |
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=cut |
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sub terminate { |
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$_[0]->run_cmd('perphup', '-t', $_[0]->basedir); |
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} |
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159
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=head1 BUGS AND LIMITATIONS |
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Please report any bugs or feature requests to |
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L. |
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164
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=head1 AUTHOR |
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Ido Perlmuter |
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168
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Thanks to the guys at the L, |
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especially Colin Booth, for helping out with suggestions and information. |
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171
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=head1 LICENSE AND COPYRIGHT |
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Copyright (c) 2015-2023, Ido Perlmuter C<< ido@ido50.net >>. |
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Licensed under the Apache License, Version 2.0 (the "License"); |
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you may not use this file except in compliance with the License. |
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You may obtain a copy of the License at |
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179
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http://www.apache.org/licenses/LICENSE-2.0 |
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Unless required by applicable law or agreed to in writing, software |
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distributed under the License is distributed on an "AS IS" BASIS, |
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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See the License for the specific language governing permissions and |
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limitations under the License. |
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=cut |
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189
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1; |
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__END__ |