#!/bin/bash
# added 2017-05-18 by alorbach
#	This test only tests what happens when kafka cluster fails
# This file is part of the rsyslog project, released under ASL 2.0
echo Init Testbench
. ${srcdir:=.}/diag.sh init
export RSTB_IMDIAG_INJECT_DELAY_MODE=full

# *** ==============================================================================
export TESTMESSAGES=50000
export TESTMESSAGES2=50001
export TESTMESSAGESFULL=100000

# Generate random topic name
RANDTOPIC="$(printf '%08x' "$(( (RANDOM<<16) ^ RANDOM ))")"
export RANDTOPIC

# Set EXTRA_EXITCHECK to dump kafka/zookeeperlogfiles on failure only.
export EXTRA_EXITCHECK=dumpkafkalogs
export EXTRA_EXIT=kafka
echo ===============================================================================
echo Check and Stop previous instances of kafka/zookeeper 
download_kafka
stop_zookeeper
stop_kafka

echo Create kafka/zookeeper instance and topics
start_zookeeper
start_kafka
wait_for_kafka_startup
create_kafka_topic $RANDTOPIC '.dep_wrk' '22181'

echo Stopping kafka cluster instance
stop_kafka

# --- Create imkafka receiver config
export RSYSLOG_DEBUGLOG="log"
generate_conf
add_conf '
main_queue(queue.timeoutactioncompletion="60000" queue.timeoutshutdown="60000")

module(load="../plugins/imkafka/.libs/imkafka")
/* Polls messages from kafka server!*/
input(	type="imkafka"
	topic="'$RANDTOPIC'"
	broker="localhost:29092"
	consumergroup="default"
	confParam=[ "compression.codec=none",
		"session.timeout.ms=10000",
		"socket.timeout.ms=5000",
		"socket.keepalive.enable=true",
		"reconnect.backoff.jitter.ms=1000",
		"enable.partition.eof=false" ]
	)

template(name="outfmt" type="string" string="%msg:F,58:2%\n")

if ($msg contains "msgnum:") then {
	action( type="omfile" file=`echo $RSYSLOG_OUT_LOG` template="outfmt" )
}
'

echo Starting receiver instance [imkafka]
startup
# ---

# --- Create omkafka sender config
export RSYSLOG_DEBUGLOG="log2"
generate_conf 2
add_conf '
main_queue(queue.timeoutactioncompletion="60000" queue.timeoutshutdown="60000")

module(load="../plugins/omkafka/.libs/omkafka")

template(name="outfmt" type="string" string="%msg%\n")

local4.* action(	name="kafka-fwd"
	type="omkafka"
	topic="'$RANDTOPIC'"
	broker="localhost:29092"
	template="outfmt"
	confParam=[	"compression.codec=none",
			"socket.timeout.ms=10000",
			"socket.keepalive.enable=true",
			"reconnect.backoff.jitter.ms=1000",
			"queue.buffering.max.messages=20000",
			"enable.auto.commit=true",
			"message.send.max.retries=1"]
	topicConfParam=["message.timeout.ms=10000"]
	partitions.auto="on"
	closeTimeout="60000"
	resubmitOnFailure="on"
	keepFailedMessages="on"
	failedMsgFile="'$RSYSLOG_OUT_LOG'-failed-'$RANDTOPIC'.data"
	action.resumeInterval="1"
	action.resumeRetryCount="10"
	queue.saveonshutdown="on"
	)
' 2

echo Starting sender instance [omkafka]
startup 2
# ---

echo Inject messages into rsyslog sender instance
injectmsg2 1 $TESTMESSAGES

echo Starting kafka cluster instance
start_kafka
echo Ensuring kafka cluster is ready before resuming processing ...
wait_for_kafka_startup

echo Inject messages into rsyslog sender instance
tcpflood -m$TESTMESSAGES -i$TESTMESSAGES2

echo Verifying kafka cluster remains reachable after message burst ...
wait_for_kafka_startup

echo Stopping sender instance [imkafka]
shutdown_when_empty 2
wait_shutdown 2

echo Stopping receiver instance [omkafka]
shutdown_when_empty
wait_shutdown

echo delete kafka topics
delete_kafka_topic $RANDTOPIC '.dep_wrk' '22181'

# Do the final sequence check
seq_check2 1 $TESTMESSAGESFULL -d

echo success
exit_test
