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# Copyright 2011 Google Inc. All Rights Reserved.
# This file is available under the Apache license.
counter bytes_total by operation
# total connections, and total connection time can be used to compute the
# average connection time.
counter connections_total
counter connection_time_total as "connection-time_total"
# See which modules are popular.
counter transfers_total by operation, module
# Use this gauge to measure duration between start and end time per connection.
# It is never used externally, so mark as `hidden'.
hidden gauge connection_time by pid
/^(?P<date>\d+\/\d+\/\d+ \d+:\d+:\d+) \[(?P<pid>\d+)\] / {
strptime($date, "2006/01/02 15:04:05")
# Transfer log
# %o %h [%a] %m (%u) %f %l
/(?P<operation>\S+) (\S+) \[\S+\] (?P<module>\S+) \(\S*\) \S+ (?P<bytes>\d+)/ {
transfers_total[$operation, $module]++
}
# Connection starts
/connect from \S+ \(\d+\.\d+\.\d+\.\d+\)/ {
connections_total++
# Record the start time of the connection, using the log timestamp.
connection_time[$pid] = timestamp()
}
# Connection summary when session closed
/sent (?P<sent>\d+) bytes received (?P<received>\d+) bytes total size \d+/ {
# Sum total bytes across all sessions for this process
bytes_total["sent"] += $sent
bytes_total["received"] += $received
# Count total time spent with connections open, according to the log timestamp.
connection_time_total += timestamp() - connection_time[$pid]
# Delete the datum referenced in this dimensional metric. We assume that
# this will never happen again, and hint to the VM that we can garbage
# collect the memory used.
del connection_time[$pid]
}
}
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