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Fixed bug: Race conditions may occur because of duplicate offset processing.

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This commit is contained in:
Thorsten Eckel 2015-07-24 11:57:45 +02:00
parent 117f761348
commit 12cf0122ca
1 changed files with 14 additions and 10 deletions
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24
lib/import/otrs.rb
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@ -377,27 +377,31 @@ module Import::OTRS
Thread.abort_on_exception = true
thread_count = 8
threads = {}
count = 0
steps = 20
locks = { User: {} }
(1..thread_count).each {|thread|
threads[thread] = Thread.new {
Thread.current[:thread_no] = thread
sleep thread * 3
log "Started import thread# #{thread} ..."
steps = 20
Thread.current[:thread_no] = thread
Thread.current[:loop_count] = 0
loop do
count += steps
# get the offset for the current thread and loop count
thread_offset_base = (Thread.current[:thread_no] - 1) * steps
thread_step = thread_count * steps
offset = Thread.current[:loop_count] * thread_step + thread_offset_base
log "loading... thread# #{thread} ..."
offset = count - steps
if offset != 0
offset = count - steps + 1
end
records = load( 'Ticket', steps, count - steps)
records = load( 'Ticket', steps, offset)
if !records || !records[0]
log "... thread# #{thread}, no more work."
break
end
_ticket_result(records, locks, thread)
Thread.current[:loop_count] += 1
end
ActiveRecord::Base.connection.close
}