How to extract logs between the current time and the last 15 minutes ?

I want to extract the logs between the current time stamp and 15 minutes before and sent an email to the people configured. I developed the below script but it's not working properly; can someone help me?? I have a log file containing this pattern:

[2016-05-24T00:58:04.508-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_QuartzSchedulerThread] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21904] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzJob] [SRC_METHOD: <init>] Constructor  QuartzJob
[2016-05-24T00:58:04.508-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_QuartzSchedulerThread] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21904] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzJob] [SRC_METHOD: <init>] Constructor  QuartzJob
[2016-05-24T00:58:04.513-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_Worker-1] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21908] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzTriggerListener] [SRC_METHOD: triggerFired] Trigger state 0
[2016-05-24T00:58:04.515-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_Worker-1] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21908] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzTriggerListener] [SRC_METHOD: triggerFired] Trigger state 0
[2016-05-24T00:58:04.516-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_Worker-1] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21908] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzTriggerListener] [SRC_METHOD: triggerFired] Trigger Listener QuartzTriggerListener.triggerFired(Trigger trigger, JobExecutionContext ctx)
[2016-05-24T01:00:04.513-04:00] [oim_server1] [WARNING] [] [oracle.iam.scheduler.vo] [tid: OIMQuartzScheduler_Worker-7] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21956] [APP: oim#11.1.2.0.0] IAM-1020021 Unable to execute job : CmyAccess Flat File WD Candidate with Job History Id:1336814[[
org.identityconnectors.framework.common.exceptions.ConfigurationException: Directory does not contain normal files to read HR-76
    at org.identityconnectors.flatfile.utils.FlatFileUtil.assertValidFilesinDir(FlatFileUtil.java:230)
    at org.identityconnectors.flatfile.utils.FlatFileUtil.getDir(FlatFileUtil.java:176)
    at org.identityconnectors.flatfile.utils.FlatFileUtil.getFlatFileDir(FlatFileUtil.java:182)
    at org.identityconnectors.flatfile.FlatFileConnector.executeQuery(FlatFileConnector.java:134)
    at org.identityconnectors.flatfile.FlatFileConnector.executeQuery(FlatFileConnector.java:58)
    at org.identityconnectors.framework.impl.api.local.operations.SearchImpl.rawSearch(SearchImpl.java:105)
    at org.identityconnectors.framework.impl.api.local.operations.SearchImpl.search(SearchImpl.java:82)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.identityconnectors.framework.impl.api.local.operations.ConnectorAPIOperationRunnerProxy.invoke(ConnectorAPIOperationRunnerProxy.java:93)
    at com.sun.proxy.$Proxy735.search(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.identityconnectors.framework.impl.api.local.operations.ThreadClassLoaderManagerProxy.invoke(ThreadClassLoaderManagerProxy.java:107)
    at com.sun.proxy.$Proxy735.search(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.identityconnectors.framework.impl.api.BufferedResultsProxy$BufferedResultsHandler.run(BufferedResultsProxy.java:162)

The script I have written counts the errors found and stores them in a file with the number; if the error count increases it will run the script and send a mail. I can configure cron for this but the script I have written is not working fine. Can someone help me to extract logs between the current time and the last 15 minutes and generate a temp file?

LogDir=/data/app/Oracle/Middleware/user_projects/domains/oim_domain/servers/oim_server1/logs
EMAIL1=xxx@gmail.com
SUBJECT=Failed
MESSAGE="Scheduler failed"
SMTP="SMTPHOSTNAME"
SENDER=no-reply@gmail.com



   NOW=$(date +"%FT%T.000%-04:00")
T2=$(date --date='15 minutes ago' +"%FT%T.000%-04:00")
OUT=/tmp/oim_server1-diagnostic_$(date +%F-%H-%M).log


find $LogDir -mmin -15 -name "oim_server1-diagnostic.log" > files.txt

count=0;
if [ -f lastCount ]; then
 count=$(cat lastCount)
fi


while read file
do
        echo "reading file \n " $file
        currentCount=$(grep -c 'Directory does not contain normal files to read HR-76' $file)
        if [  $currentCount -ne $count  -a  $currentCount -ne 0  ];then
                echo "Error Found " $currentCount
               awk -v TSTART="[$T2]" -v TEND="[$NOW]" '$1>=TSTART && $1<=TEND' $LogDir/oim_server1-diagnostic.log > "$OUT"
                                test -s $OUT &&
                                        echo -e "$MESSAGE" | mailx -S smtp="$SMTP" -a "$OUT" -r "$SENDER" -s "$SUBJECT" "$EMAIL1"
                                        rm -f "$OUT"
        fi;
        echo $currentCount > lastCount
done < files.txt

I want to extract all logs between two timestamps. Some lines may not have the timestamp, but I want those lines also. In short, I want every line that falls under two time stamps. This script is giving me log file only have timestamp and rest all the lines are missing any suggestion ??? Please note the start time stamp or end time stamp may not be there in all lines of the log, but I want every line between these two time stamps. Sample generation of above log mentioned by the above script:

[2016-05-24T00:58:04.508-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_QuartzSchedulerThread] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21904] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzJob] [SRC_METHOD: <init>] Constructor  QuartzJob
[2016-05-24T00:58:04.508-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_QuartzSchedulerThread] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21904] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzJob] [SRC_METHOD: <init>] Constructor  QuartzJob
[2016-05-24T00:58:04.513-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_Worker-1] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21908] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzTriggerListener] [SRC_METHOD: triggerFired] Trigger state 0
[2016-05-24T00:58:04.515-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_Worker-1] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21908] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzTriggerListener] [SRC_METHOD: triggerFired] Trigger state 0
[2016-05-24T00:58:04.516-04:00] [oim_server1] [TRACE:32] [] [oracle.iam.scheduler.impl.quartz] [tid: OIMQuartzScheduler_Worker-1] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21908] [APP: oim#11.1.2.0.0] [SRC_CLASS: oracle.iam.scheduler.impl.quartz.QuartzTriggerListener] [SRC_METHOD: triggerFired] Trigger Listener QuartzTriggerListener.triggerFired(Trigger trigger, JobExecutionContext ctx)
[2016-05-24T01:00:04.513-04:00] [oim_server1] [WARNING] [] [oracle.iam.scheduler.vo] [tid: OIMQuartzScheduler_Worker-7] [userId: oiminternal] [ecid: 0000LI6NBsP4yk4LzUS4yW1NBABd000003,1:21956] [APP: oim#11.1.2.0.0] IAM-1020021 Unable to execute job : CmyAccess Flat File WD Candidate with Job History Id:1336814[[

Since your timestamps are in YYYY-MM-HH HH:MM:SS order you can compare dates with simple string comparisons here.

awk -v FIRST="2016-05-24T00:00:00.000" -v LAST="2016-05-24-T01:00:00.000" '
BEGIN {
        FIRST="["FIRST"-04:00]"
        LAST="["LAST"-04:00]"
}
$1 ~ /[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]/ {
        P=0;
        if(($1 >= FIRST) && ($1 <= LAST)) { P=1; }
}
P' inputfile

@Corona688: Thank you. It solves my purpose.

Hi Puneetkhular,

You can also use sed to achieve this.

sed -n '/start time/,/endtime/p' logfile
sed -n '/05\/26\/2016 02:41:56/,/05\/26\/2016 02:41:57/p' logfile

hope, this helps.