Remove new line after pattern and newline between 2 pattern - regex

Question

I have to parse and filter in linux command line only some log files.
after applying some awk and sed commands
awk -v RS='+++ ' '!/Diameter|REPT OM BLOCKED|REPT OM STARTING/ { print f $0 } {f=RT}' ./snmplog* | grep -v '+++' | grep -v '++-' | sed -e 's/^\s*//g' | sed -e '/^$/d'
I got an output like this which look like an xml file:
<Alarm>
<AlarmIndex>8865</AlarmIndex>
<ObjectName>0-0-1#RcvTCAPabortRatio^0-0-3</ObjectName>
<SpecificProblem>KPI OUTSIDE OF CRITICAL THRESHOLD</SpecificProblem>
<ProbableCause>ThresholdCrossed</ProbableCause>
<NotificationIdentifier>8865</NotificationIdentifier>
<Severity>Cleared</Severity>
<AlarmType>QualityOfServiceAlarm</AlarmType>
<AdditionalText></AdditionalText>
<OMText>REPT MEAS KPI
(RcvTCAPabortRatio^0-0-3 = 20) OUTSIDE OF CRITICAL ALARM THRESHOLD (10)</O
MText>
<AlarmCode>922044</AlarmCode>
<AlarmSource>PLATFORM</AlarmSource>
<AlarmTime>Wed Mar 11 00:15:10 2015</AlarmTime>
<RepeatCount>0</RepeatCount>
<OMDBKey>/MS044</OMDBKey>
<AutoClear>1</AutoClear>
</Alarm>
<Alarm>
<AlarmIndex>8928</AlarmIndex>
<ObjectName>0-0-1#RcvTCAPabortRatio^0-0-11</ObjectName>
<SpecificProblem>KPI OUTSIDE OF CRITICAL THRESHOLD</SpecificProblem>
<ProbableCause>ThresholdCrossed</ProbableCause>
<NotificationIdentifier>8928</NotificationIdentifier>
<Severity>Cleared</Severity>
<AlarmType>QualityOfServiceAlarm</AlarmType>
<AdditionalText></AdditionalText>
<OMText>REPT MEAS KPI
(RcvTCAPabortRatio^0-0-11 = 19) OUTSIDE OF CRITICAL ALARM THRESHOLD (10)</
OMText>
<AlarmCode>922044</AlarmCode>
<AlarmSource>PLATFORM</AlarmSource>
<AlarmTime>Wed Mar 11 00:15:10 2015</AlarmTime>
<RepeatCount>0</RepeatCount>
<OMDBKey>/MS044</OMDBKey>
<AutoClear>1</AutoClear>
</Alarm>
<Alarm>
<AlarmIndex>8771</AlarmIndex>
<ObjectName>0-0-1#SuccStandaloneISDRatio</ObjectName>
<SpecificProblem>ZERO DENOMINATOR</SpecificProblem>
<ProbableCause>CorruptData</ProbableCause>
<NotificationIdentifier>8771</NotificationIdentifier>
<Severity>Cleared</Severity>
<AlarmType>ProcessingErrorAlarm</AlarmType>
<AdditionalText></AdditionalText>
<OMText>REPT MEAS KPI
CALCULATION OF (SuccStandaloneISDRatio) FAILED FOR ZERO DENOMINATOR</OMText>
<AlarmCode>922041</AlarmCode>
<AlarmSource>PLATFORM</AlarmSource>
<AlarmTime>Wed Mar 11 01:00:10 2015</AlarmTime>
<RepeatCount>0</RepeatCount>
<OMDBKey>/MS041</OMDBKey>
<AutoClear>1</AutoClear>
</Alarm>
I would like to have after threatment something like this:
<Alarm><AlarmIndex>8771</AlarmIndex>...<OMText>REPT MEAS KPI
CALCULATION OF (SuccStandaloneISDRatio) FAILED FOR ZERO DENOMINATOR</OMText><AlarmCode>922041</AlarmCode>...</Alarm>
I have to remove all new line after > and keep new line between tags.
As you can see in my log I have an issue in the tag </OMText> in which I can have a new line also and it should be removed.
I already try with many sed regex found here, but without success
How can I do this?
[Edit]
As requested, please find below the original log file:
+++ FE01 2015-03-11 00:25:35 SNMP /SNM001 #310852 0-0-1 >
<Alarm>
<AlarmIndex>1119</AlarmIndex>
<ObjectName>0-0-3#destMMENotAvail</ObjectName>
<SpecificProblem>CLR error,Diameter Peer:p3.mmeccd.3gppnetwork.org</SpecificProblem>
<ProbableCause>CommunicationsSubsystemFailure</ProbableCause>
<NotificationIdentifier>1119</NotificationIdentifier>
<Severity>Minor</Severity>
<AlarmType>CommunicationAlarm</AlarmType>
<AdditionalText>The destination MME is not reachable</AdditionalText>
<OMText>CLR error,Diameter Peer:p3.mmeccd.3gppne
twork.org</OMText>
<AlarmCode>50906</AlarmCode>
<AlarmSource>SDM#RTLTE</AlarmSource>
<AlarmTime>Wed Mar 11 00:25:35 2015</AlarmTime>
<RepeatCount>0</RepeatCount>
<OMDBKey></OMDBKey>
<AutoClear>1</AutoClear>
</Alarm>
END OF REPORT #310852++-
+++ FE01 2015-03-11 00:25:58 SNMP /SNM001 #310853 0-0-1 >
<Alarm>
<AlarmIndex>8914</AlarmIndex>
<ObjectName>0-0-14#2AILogger.C!81</ObjectName>
<SpecificProblem>OM BLOCKED AILogger.C</SpecificProblem>
<ProbableCause>QueueSizeExceeded</ProbableCause>
<NotificationIdentifier>8914</NotificationIdentifier>
<Severity>Minor</Severity>
<AlarmType>QualityOfServiceAlarm</AlarmType>
<AdditionalText></AdditionalText>
<OMText>REPT OM BLOCKED FOR PROCESS PDLSU1
612 MESSAGES DISCARD
OM IDENTITY :
CRERROR BEING BLOCKED; FILE : AILogger.C LINE NUMBER : 81
</OMText>
<AlarmCode>906065</AlarmCode>
<AlarmSource>PLATFORM</AlarmSource>
<AlarmTime>Wed Mar 11 00:25:58 2015</AlarmTime>
<RepeatCount>0</RepeatCount>
<OMDBKey>/CR065</OMDBKey>
<AutoClear>1</AutoClear>
</Alarm>
END OF REPORT #310853++-
First I have to discared messages which contains within tags: "Diameter", "REPT OM BLOCKED" "REPT OM STARTING" then keeping only the message between the tags ...

Answer 1

awk '
/<Alarm>/,/<\/Alarm>/ {
sub(/^[[:blank:]]+/, "") # trim leading blanks
sub(/[[:blank:]]+$/, "") # trim trailing blanks
if (/>$/) # if the line ends with a tag
printf "%s", $0 # print it with no newline
else
print
}
/<\/Alarm>/ {print ""} # add a newline after each Alarm block
' log.file
outputs
<Alarm><AlarmIndex>1119</AlarmIndex><ObjectName>0-0-3#destMMENotAvail</ObjectName><SpecificProblem>CLR error,Diameter Peer:p3.mmeccd.3gppnetwork.org</SpecificProblem><ProbableCause>CommunicationsSubsystemFailure</ProbableCause><NotificationIdentifier>1119</NotificationIdentifier><Severity>Minor</Severity><AlarmType>CommunicationAlarm</AlarmType><AdditionalText>The destination MME is not reachable</AdditionalText><OMText>CLR error,Diameter Peer:p3.mmeccd.3gppne
twork.org</OMText><AlarmCode>50906</AlarmCode><AlarmSource>SDM#RTLTE</AlarmSource><AlarmTime>Wed Mar 11 00:25:35 2015</AlarmTime><RepeatCount>0</RepeatCount><OMDBKey></OMDBKey><AutoClear>1</AutoClear></Alarm>
<Alarm><AlarmIndex>8914</AlarmIndex><ObjectName>0-0-14#2AILogger.C!81</ObjectName><SpecificProblem>OM BLOCKED AILogger.C</SpecificProblem><ProbableCause>QueueSizeExceeded</ProbableCause><NotificationIdentifier>8914</NotificationIdentifier><Severity>Minor</Severity><AlarmType>QualityOfServiceAlarm</AlarmType><AdditionalText></AdditionalText><OMText>REPT OM BLOCKED FOR PROCESS PDLSU1
612 MESSAGES DISCARD
OM IDENTITY :
CRERROR BEING BLOCKED; FILE : AILogger.C LINE NUMBER : 81
</OMText><AlarmCode>906065</AlarmCode><AlarmSource>PLATFORM</AlarmSource><AlarmTime>Wed Mar 11 00:25:58 2015</AlarmTime><RepeatCount>0</RepeatCount><OMDBKey>/CR065</OMDBKey><AutoClear>1</AutoClear></Alarm>

Answer 2

To pipe (should be modified from original file like you post later)
sed '
# don t care out of section
/<Alarm>/,\#</Alarm># !d
# in section
/<Alarm>/,\#</Alarm># {
# keep line in hold buffer
H
# if not the end, loop (cycle to next line and start of script)
\#</Alarm># !b
# clean current buffer
s/.*//
# exchange buffer (current/hold)
x
# remove first new line (extra due to first keep)
s/\n//
# remove first new line
s/\n//
# reformat first part until OMText
s#\(</AlarmIndex>\).*\(<OMText>\)#\1...\2#
# reformat between AlarmCode and /Alarm
s#\(</AlarmCode>\).*\(</Alarm>\)#\1...\2#
# print result at output
}' YourFile
Self explain, posix version