Class: ProcessWanker::PIDService

Inherits:
ProcessService show all
Defined in:
lib/service_classes/pid_service.rb

Constant Summary

Constants included from Log

Log::DEBUG, Log::ERROR, Log::INFO, Log::WARN

Instance Attribute Summary

Attributes inherited from Service

#attempt_count, #config_node, #current_state, #dependencies, #ignore, #last_action_time, #last_fail_time, #last_transition_time, #params, #prev_state, #show_state, #stable, #suppress, #want_state, #want_state_mode

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from ProcessService

#do_start

Methods included from Log

debug, error, info, log, set_level, warn

Methods inherited from Service

#check_action_delay, #do_start, #extract_params, #group_name, #matches_single, #matches_spec, #name, #resolve_dependencies, #safe_do, #safe_do_ping, #safe_do_start, #safe_do_stop, #set_want_state, #tick, #validate_params

Constructor Details

#initialize(iparams) ⇒ PIDService

:start_dir (optional)

:run_user (optional)
:soft_kill_limit (optional)

plus anything to be passed to Service



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# File 'lib/service_classes/pid_service.rb', line 43

def initialize(iparams)

# extract parameters
extract_params(
  iparams,
  [
    :pid_file,
  ])
  
raise "service has no pid_file" if(!@params[:pid_file])

  super(iparams)    
end

Class Method Details

.nice_name ⇒ Object 



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# File 'lib/service_classes/pid_service.rb', line 25

def self.nice_name
  "pid_service"
end

Instance Method Details

#do_ping ⇒ Object

ping

return run state of process



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# File 'lib/service_classes/pid_service.rb', line 93

def do_ping
begin
  pid = File.read(@params[:pid_file]).strip.to_i
  return(:up) if(ProcessUtil::all_processes[pid])
rescue Exception => e
end
:down
end

#do_stop(attempt_count) ⇒ Object

stop

stop the process (either with -TERM or -KILL)



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# File 'lib/service_classes/pid_service.rb', line 65

def do_stop(attempt_count)
  info("do_stop[#{attempt_count}] for #{self.name}")

  kl=@params[:soft_kill_limit]
  mode = (kl && attempt_count >= kl) ? :hard : :soft

if(mode == :soft)
  if(params[:stop_cmd])
    system(params[:stop_cmd])
    return
  end
end     
  
ProcessWanker::with_logged_rescue("PidServer::do_stop - reading pid file") do
  pid = File.read(@params[:pid_file]).strip.to_i
  Process.kill({ :hard => "KILL", :soft => "TERM" }[mode],pid)
end

end

#env_hash ⇒ Object 



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# File 'lib/service_classes/pid_service.rb', line 109

def env_hash()
  nil
end