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# frozen_string_literal: true
if ENV['ENABLE_SIDEKIQ_CLUSTER']
Thread.new do
Thread.current.abort_on_exception = true
parent = Process.ppid
loop do
sleep(5)
# In cluster mode it's possible that the master process is SIGKILL'd. In
# this case the parent PID changes and we need to terminate ourselves.
if Process.ppid != parent
Process.kill(:TERM, Process.pid)
# Wait for just a few extra seconds for a final attempt to
# gracefully terminate. Considering the parent (cluster) process
# have changed (SIGKILL'd), it shouldn't take long to shutdown.
sleep(5)
# Signaling the Sidekiq Pgroup as KILL is not forwarded to
# a possible child process. In Sidekiq Cluster, all child Sidekiq
# processes are PGROUP leaders (each process has its own pgroup).
Process.kill(:KILL, 0)
break
end
end
end
end
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