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Regular Expression
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(SessionID=".*?")?(?: .*(MsgType=".*?"))?
/
gm
Input 1
1
New
2021-10-07 10:32:05,767 ERROR [LAWT2] blah.blah.blah - Message processing FAILED: <ExecutionReport blah="xxx" foo="yyy" SessionID="kkk" MoreStuff="zz"> Total time for which application threads were stopped: 0.0003858 seconds, Stopping threads took: 0.0000653 seconds 2021-10-07 10:31:32,902 ERROR [LAWT6] blah.blah.blah - Message processing FAILED: <NewOrderSingle SessionID="zkx" TargetSubID="ttt" Account="blah" MsgType="D" BookingTypeOverride="0" Symbol="6316" OtherField1="othervalue1" Otherfield2="othervalue2"/></D></NewOrderSingle>
Substitution
2021-10-07 10:32:05,767 ERROR [LAWT2] blah.blah.blah - Message processing FAILED: <ExecutionReport blah="xxx" foo="yyy" SessionID="kkk" MoreStuff="zz"> Total time for which application threads were stopped: 0.0003858 seconds, Stopping threads took: 0.0000653 seconds 2021-10-07 10:31:32,902 ERROR [LAWT6] blah.blah.blah - Message processing FAILED: <NewOrderSingle SessionID="zkx" TargetSubID="ttt" Account="blah" MsgType="D" BookingTypeOverride="0" Symbol="6316" OtherField1="othervalue1" Otherfield2="othervalue2"/></D></NewOrderSingle>