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If each logline is a series of comma separated values which are always in the same order then you could use the csv filter in logstash with the columns defined.
Example
Input:
12:34, 5555, 13:54
Filter
csv {
source => "message"
columns => ['time_in', 'id', 'time_out']
}
Result:
time_in => 12:34
id => 5555
time_out => 13:54